diff --git a/services/acm/src/main/scala/facade/amazonaws/services/ACM.scala b/services/acm/src/main/scala/facade/amazonaws/services/ACM.scala
index 32773693e..0c95052a5 100644
--- a/services/acm/src/main/scala/facade/amazonaws/services/ACM.scala
+++ b/services/acm/src/main/scala/facade/amazonaws/services/ACM.scala
@@ -249,7 +249,8 @@ package acm {
     val REVOKED              = "REVOKED"
     val FAILED               = "FAILED"
 
-    val values = IndexedSeq(PENDING_VALIDATION, ISSUED, INACTIVE, EXPIRED, VALIDATION_TIMED_OUT, REVOKED, FAILED)
+    val values =
+      js.Object.freeze(js.Array(PENDING_VALIDATION, ISSUED, INACTIVE, EXPIRED, VALIDATION_TIMED_OUT, REVOKED, FAILED))
   }
 
   /**
@@ -277,7 +278,7 @@ package acm {
     val ENABLED  = "ENABLED"
     val DISABLED = "DISABLED"
 
-    val values = IndexedSeq(ENABLED, DISABLED)
+    val values = js.Object.freeze(js.Array(ENABLED, DISABLED))
   }
 
   object CertificateTypeEnum {
@@ -285,7 +286,7 @@ package acm {
     val AMAZON_ISSUED = "AMAZON_ISSUED"
     val PRIVATE       = "PRIVATE"
 
-    val values = IndexedSeq(IMPORTED, AMAZON_ISSUED, PRIVATE)
+    val values = js.Object.freeze(js.Array(IMPORTED, AMAZON_ISSUED, PRIVATE))
   }
 
   @js.native
@@ -342,7 +343,7 @@ package acm {
     val SUCCESS            = "SUCCESS"
     val FAILED             = "FAILED"
 
-    val values = IndexedSeq(PENDING_VALIDATION, SUCCESS, FAILED)
+    val values = js.Object.freeze(js.Array(PENDING_VALIDATION, SUCCESS, FAILED))
   }
 
   /**
@@ -479,19 +480,21 @@ package acm {
     val NONE                          = "NONE"
     val CUSTOM                        = "CUSTOM"
 
-    val values = IndexedSeq(
-      TLS_WEB_SERVER_AUTHENTICATION,
-      TLS_WEB_CLIENT_AUTHENTICATION,
-      CODE_SIGNING,
-      EMAIL_PROTECTION,
-      TIME_STAMPING,
-      OCSP_SIGNING,
-      IPSEC_END_SYSTEM,
-      IPSEC_TUNNEL,
-      IPSEC_USER,
-      ANY,
-      NONE,
-      CUSTOM
+    val values = js.Object.freeze(
+      js.Array(
+        TLS_WEB_SERVER_AUTHENTICATION,
+        TLS_WEB_CLIENT_AUTHENTICATION,
+        CODE_SIGNING,
+        EMAIL_PROTECTION,
+        TIME_STAMPING,
+        OCSP_SIGNING,
+        IPSEC_END_SYSTEM,
+        IPSEC_TUNNEL,
+        IPSEC_USER,
+        ANY,
+        NONE,
+        CUSTOM
+      )
     )
   }
 
@@ -512,22 +515,24 @@ package acm {
     val PCA_ACCESS_DENIED                = "PCA_ACCESS_DENIED"
     val OTHER                            = "OTHER"
 
-    val values = IndexedSeq(
-      NO_AVAILABLE_CONTACTS,
-      ADDITIONAL_VERIFICATION_REQUIRED,
-      DOMAIN_NOT_ALLOWED,
-      INVALID_PUBLIC_DOMAIN,
-      DOMAIN_VALIDATION_DENIED,
-      CAA_ERROR,
-      PCA_LIMIT_EXCEEDED,
-      PCA_INVALID_ARN,
-      PCA_INVALID_STATE,
-      PCA_REQUEST_FAILED,
-      PCA_RESOURCE_NOT_FOUND,
-      PCA_INVALID_ARGS,
-      PCA_INVALID_DURATION,
-      PCA_ACCESS_DENIED,
-      OTHER
+    val values = js.Object.freeze(
+      js.Array(
+        NO_AVAILABLE_CONTACTS,
+        ADDITIONAL_VERIFICATION_REQUIRED,
+        DOMAIN_NOT_ALLOWED,
+        INVALID_PUBLIC_DOMAIN,
+        DOMAIN_VALIDATION_DENIED,
+        CAA_ERROR,
+        PCA_LIMIT_EXCEEDED,
+        PCA_INVALID_ARN,
+        PCA_INVALID_STATE,
+        PCA_REQUEST_FAILED,
+        PCA_RESOURCE_NOT_FOUND,
+        PCA_INVALID_ARGS,
+        PCA_INVALID_DURATION,
+        PCA_ACCESS_DENIED,
+        OTHER
+      )
     )
   }
 
@@ -639,7 +644,7 @@ package acm {
     val EC_secp384r1  = "EC_secp384r1"
     val EC_secp521r1  = "EC_secp521r1"
 
-    val values = IndexedSeq(RSA_2048, RSA_1024, RSA_4096, EC_prime256v1, EC_secp384r1, EC_secp521r1)
+    val values = js.Object.freeze(js.Array(RSA_2048, RSA_1024, RSA_4096, EC_prime256v1, EC_secp384r1, EC_secp521r1))
   }
 
   /**
@@ -673,18 +678,20 @@ package acm {
     val ANY                 = "ANY"
     val CUSTOM              = "CUSTOM"
 
-    val values = IndexedSeq(
-      DIGITAL_SIGNATURE,
-      NON_REPUDIATION,
-      KEY_ENCIPHERMENT,
-      DATA_ENCIPHERMENT,
-      KEY_AGREEMENT,
-      CERTIFICATE_SIGNING,
-      CRL_SIGNING,
-      ENCIPHER_ONLY,
-      DECIPHER_ONLY,
-      ANY,
-      CUSTOM
+    val values = js.Object.freeze(
+      js.Array(
+        DIGITAL_SIGNATURE,
+        NON_REPUDIATION,
+        KEY_ENCIPHERMENT,
+        DATA_ENCIPHERMENT,
+        KEY_AGREEMENT,
+        CERTIFICATE_SIGNING,
+        CRL_SIGNING,
+        ENCIPHER_ONLY,
+        DECIPHER_ONLY,
+        ANY,
+        CUSTOM
+      )
     )
   }
 
@@ -765,7 +772,7 @@ package acm {
   object RecordTypeEnum {
     val CNAME = "CNAME"
 
-    val values = IndexedSeq(CNAME)
+    val values = js.Object.freeze(js.Array(CNAME))
   }
 
   @js.native
@@ -809,7 +816,7 @@ package acm {
     val ELIGIBLE   = "ELIGIBLE"
     val INELIGIBLE = "INELIGIBLE"
 
-    val values = IndexedSeq(ELIGIBLE, INELIGIBLE)
+    val values = js.Object.freeze(js.Array(ELIGIBLE, INELIGIBLE))
   }
 
   object RenewalStatusEnum {
@@ -818,7 +825,7 @@ package acm {
     val SUCCESS              = "SUCCESS"
     val FAILED               = "FAILED"
 
-    val values = IndexedSeq(PENDING_AUTO_RENEWAL, PENDING_VALIDATION, SUCCESS, FAILED)
+    val values = js.Object.freeze(js.Array(PENDING_AUTO_RENEWAL, PENDING_VALIDATION, SUCCESS, FAILED))
   }
 
   /**
@@ -961,17 +968,19 @@ package acm {
     val PRIVILEGE_WITHDRAWN    = "PRIVILEGE_WITHDRAWN"
     val A_A_COMPROMISE         = "A_A_COMPROMISE"
 
-    val values = IndexedSeq(
-      UNSPECIFIED,
-      KEY_COMPROMISE,
-      CA_COMPROMISE,
-      AFFILIATION_CHANGED,
-      SUPERCEDED,
-      CESSATION_OF_OPERATION,
-      CERTIFICATE_HOLD,
-      REMOVE_FROM_CRL,
-      PRIVILEGE_WITHDRAWN,
-      A_A_COMPROMISE
+    val values = js.Object.freeze(
+      js.Array(
+        UNSPECIFIED,
+        KEY_COMPROMISE,
+        CA_COMPROMISE,
+        AFFILIATION_CHANGED,
+        SUPERCEDED,
+        CESSATION_OF_OPERATION,
+        CERTIFICATE_HOLD,
+        REMOVE_FROM_CRL,
+        PRIVILEGE_WITHDRAWN,
+        A_A_COMPROMISE
+      )
     )
   }
 
@@ -1022,6 +1031,6 @@ package acm {
     val EMAIL = "EMAIL"
     val DNS   = "DNS"
 
-    val values = IndexedSeq(EMAIL, DNS)
+    val values = js.Object.freeze(js.Array(EMAIL, DNS))
   }
 }
diff --git a/services/acmpca/src/main/scala/facade/amazonaws/services/ACMPCA.scala b/services/acmpca/src/main/scala/facade/amazonaws/services/ACMPCA.scala
index 364324aa9..37631b895 100644
--- a/services/acmpca/src/main/scala/facade/amazonaws/services/ACMPCA.scala
+++ b/services/acmpca/src/main/scala/facade/amazonaws/services/ACMPCA.scala
@@ -216,14 +216,14 @@ package acmpca {
     val GetCertificate   = "GetCertificate"
     val ListPermissions  = "ListPermissions"
 
-    val values = IndexedSeq(IssueCertificate, GetCertificate, ListPermissions)
+    val values = js.Object.freeze(js.Array(IssueCertificate, GetCertificate, ListPermissions))
   }
 
   object AuditReportResponseFormatEnum {
     val JSON = "JSON"
     val CSV  = "CSV"
 
-    val values = IndexedSeq(JSON, CSV)
+    val values = js.Object.freeze(js.Array(JSON, CSV))
   }
 
   object AuditReportStatusEnum {
@@ -231,7 +231,7 @@ package acmpca {
     val SUCCESS  = "SUCCESS"
     val FAILED   = "FAILED"
 
-    val values = IndexedSeq(CREATING, SUCCESS, FAILED)
+    val values = js.Object.freeze(js.Array(CREATING, SUCCESS, FAILED))
   }
 
   /**
@@ -322,14 +322,14 @@ package acmpca {
     val EXPIRED             = "EXPIRED"
     val FAILED              = "FAILED"
 
-    val values = IndexedSeq(CREATING, PENDING_CERTIFICATE, ACTIVE, DELETED, DISABLED, EXPIRED, FAILED)
+    val values = js.Object.freeze(js.Array(CREATING, PENDING_CERTIFICATE, ACTIVE, DELETED, DISABLED, EXPIRED, FAILED))
   }
 
   object CertificateAuthorityTypeEnum {
     val ROOT        = "ROOT"
     val SUBORDINATE = "SUBORDINATE"
 
-    val values = IndexedSeq(ROOT, SUBORDINATE)
+    val values = js.Object.freeze(js.Array(ROOT, SUBORDINATE))
   }
 
   @js.native
@@ -615,7 +615,7 @@ package acmpca {
     val UNSUPPORTED_ALGORITHM = "UNSUPPORTED_ALGORITHM"
     val OTHER                 = "OTHER"
 
-    val values = IndexedSeq(REQUEST_TIMED_OUT, UNSUPPORTED_ALGORITHM, OTHER)
+    val values = js.Object.freeze(js.Array(REQUEST_TIMED_OUT, UNSUPPORTED_ALGORITHM, OTHER))
   }
 
   @js.native
@@ -799,7 +799,7 @@ package acmpca {
     val EC_prime256v1 = "EC_prime256v1"
     val EC_secp384r1  = "EC_secp384r1"
 
-    val values = IndexedSeq(RSA_2048, RSA_4096, EC_prime256v1, EC_secp384r1)
+    val values = js.Object.freeze(js.Array(RSA_2048, RSA_4096, EC_prime256v1, EC_secp384r1))
   }
 
   @js.native
@@ -998,15 +998,17 @@ package acmpca {
     val PRIVILEGE_WITHDRAWN              = "PRIVILEGE_WITHDRAWN"
     val A_A_COMPROMISE                   = "A_A_COMPROMISE"
 
-    val values = IndexedSeq(
-      UNSPECIFIED,
-      KEY_COMPROMISE,
-      CERTIFICATE_AUTHORITY_COMPROMISE,
-      AFFILIATION_CHANGED,
-      SUPERSEDED,
-      CESSATION_OF_OPERATION,
-      PRIVILEGE_WITHDRAWN,
-      A_A_COMPROMISE
+    val values = js.Object.freeze(
+      js.Array(
+        UNSPECIFIED,
+        KEY_COMPROMISE,
+        CERTIFICATE_AUTHORITY_COMPROMISE,
+        AFFILIATION_CHANGED,
+        SUPERSEDED,
+        CESSATION_OF_OPERATION,
+        PRIVILEGE_WITHDRAWN,
+        A_A_COMPROMISE
+      )
     )
   }
 
@@ -1041,8 +1043,9 @@ package acmpca {
     val SHA384WITHRSA   = "SHA384WITHRSA"
     val SHA512WITHRSA   = "SHA512WITHRSA"
 
-    val values =
-      IndexedSeq(SHA256WITHECDSA, SHA384WITHECDSA, SHA512WITHECDSA, SHA256WITHRSA, SHA384WITHRSA, SHA512WITHRSA)
+    val values = js.Object.freeze(
+      js.Array(SHA256WITHECDSA, SHA384WITHECDSA, SHA512WITHECDSA, SHA256WITHRSA, SHA384WITHRSA, SHA512WITHRSA)
+    )
   }
 
   /**
@@ -1161,6 +1164,6 @@ package acmpca {
     val MONTHS   = "MONTHS"
     val YEARS    = "YEARS"
 
-    val values = IndexedSeq(END_DATE, ABSOLUTE, DAYS, MONTHS, YEARS)
+    val values = js.Object.freeze(js.Array(END_DATE, ABSOLUTE, DAYS, MONTHS, YEARS))
   }
 }
diff --git a/services/alexaforbusiness/src/main/scala/facade/amazonaws/services/AlexaForBusiness.scala b/services/alexaforbusiness/src/main/scala/facade/amazonaws/services/AlexaForBusiness.scala
index e635f1f2c..e729ea7bb 100644
--- a/services/alexaforbusiness/src/main/scala/facade/amazonaws/services/AlexaForBusiness.scala
+++ b/services/alexaforbusiness/src/main/scala/facade/amazonaws/services/AlexaForBusiness.scala
@@ -884,21 +884,21 @@ package alexaforbusiness {
     val NO_SUCH_BUCKET   = "NO_SUCH_BUCKET"
     val INTERNAL_FAILURE = "INTERNAL_FAILURE"
 
-    val values = IndexedSeq(ACCESS_DENIED, NO_SUCH_BUCKET, INTERNAL_FAILURE)
+    val values = js.Object.freeze(js.Array(ACCESS_DENIED, NO_SUCH_BUCKET, INTERNAL_FAILURE))
   }
 
   object BusinessReportFormatEnum {
     val CSV     = "CSV"
     val CSV_ZIP = "CSV_ZIP"
 
-    val values = IndexedSeq(CSV, CSV_ZIP)
+    val values = js.Object.freeze(js.Array(CSV, CSV_ZIP))
   }
 
   object BusinessReportIntervalEnum {
     val ONE_DAY  = "ONE_DAY"
     val ONE_WEEK = "ONE_WEEK"
 
-    val values = IndexedSeq(ONE_DAY, ONE_WEEK)
+    val values = js.Object.freeze(js.Array(ONE_DAY, ONE_WEEK))
   }
 
   /**
@@ -984,7 +984,7 @@ package alexaforbusiness {
     val SUCCEEDED = "SUCCEEDED"
     val FAILED    = "FAILED"
 
-    val values = IndexedSeq(RUNNING, SUCCEEDED, FAILED)
+    val values = js.Object.freeze(js.Array(RUNNING, SUCCEEDED, FAILED))
   }
 
   /**
@@ -1013,7 +1013,7 @@ package alexaforbusiness {
     val SIPS = "SIPS"
     val H323 = "H323"
 
-    val values = IndexedSeq(SIP, SIPS, H323)
+    val values = js.Object.freeze(js.Array(SIP, SIPS, H323))
   }
 
   /**
@@ -1081,15 +1081,16 @@ package alexaforbusiness {
     val ZOOM               = "ZOOM"
     val CUSTOM             = "CUSTOM"
 
-    val values =
-      IndexedSeq(CHIME, BLUEJEANS, FUZE, GOOGLE_HANGOUTS, POLYCOM, RINGCENTRAL, SKYPE_FOR_BUSINESS, WEBEX, ZOOM, CUSTOM)
+    val values = js.Object.freeze(
+      js.Array(CHIME, BLUEJEANS, FUZE, GOOGLE_HANGOUTS, POLYCOM, RINGCENTRAL, SKYPE_FOR_BUSINESS, WEBEX, ZOOM, CUSTOM)
+    )
   }
 
   object ConnectionStatusEnum {
     val ONLINE  = "ONLINE"
     val OFFLINE = "OFFLINE"
 
-    val values = IndexedSeq(ONLINE, OFFLINE)
+    val values = js.Object.freeze(js.Array(ONLINE, OFFLINE))
   }
 
   /**
@@ -2230,7 +2231,7 @@ package alexaforbusiness {
     val CONNECTION_STATUS = "CONNECTION_STATUS"
     val DEVICE_STATUS     = "DEVICE_STATUS"
 
-    val values = IndexedSeq(CONNECTION_STATUS, DEVICE_STATUS)
+    val values = js.Object.freeze(js.Array(CONNECTION_STATUS, DEVICE_STATUS))
   }
 
   /**
@@ -2264,7 +2265,7 @@ package alexaforbusiness {
     val DEREGISTERED = "DEREGISTERED"
     val FAILED       = "FAILED"
 
-    val values = IndexedSeq(READY, PENDING, WAS_OFFLINE, DEREGISTERED, FAILED)
+    val values = js.Object.freeze(js.Array(READY, PENDING, WAS_OFFLINE, DEREGISTERED, FAILED))
   }
 
   /**
@@ -2305,22 +2306,24 @@ package alexaforbusiness {
     val INVALID_PASSWORD_STATE             = "INVALID_PASSWORD_STATE"
     val PASSWORD_NOT_FOUND                 = "PASSWORD_NOT_FOUND"
 
-    val values = IndexedSeq(
-      DEVICE_SOFTWARE_UPDATE_NEEDED,
-      DEVICE_WAS_OFFLINE,
-      CREDENTIALS_ACCESS_FAILURE,
-      TLS_VERSION_MISMATCH,
-      ASSOCIATION_REJECTION,
-      AUTHENTICATION_FAILURE,
-      DHCP_FAILURE,
-      INTERNET_UNAVAILABLE,
-      DNS_FAILURE,
-      UNKNOWN_FAILURE,
-      CERTIFICATE_ISSUING_LIMIT_EXCEEDED,
-      INVALID_CERTIFICATE_AUTHORITY,
-      NETWORK_PROFILE_NOT_FOUND,
-      INVALID_PASSWORD_STATE,
-      PASSWORD_NOT_FOUND
+    val values = js.Object.freeze(
+      js.Array(
+        DEVICE_SOFTWARE_UPDATE_NEEDED,
+        DEVICE_WAS_OFFLINE,
+        CREDENTIALS_ACCESS_FAILURE,
+        TLS_VERSION_MISMATCH,
+        ASSOCIATION_REJECTION,
+        AUTHENTICATION_FAILURE,
+        DHCP_FAILURE,
+        INTERNET_UNAVAILABLE,
+        DNS_FAILURE,
+        UNKNOWN_FAILURE,
+        CERTIFICATE_ISSUING_LIMIT_EXCEEDED,
+        INVALID_CERTIFICATE_AUTHORITY,
+        NETWORK_PROFILE_NOT_FOUND,
+        INVALID_PASSWORD_STATE,
+        PASSWORD_NOT_FOUND
+      )
     )
   }
 
@@ -2348,7 +2351,7 @@ package alexaforbusiness {
   object DeviceUsageTypeEnum {
     val VOICE = "VOICE"
 
-    val values = IndexedSeq(VOICE)
+    val values = js.Object.freeze(js.Array(VOICE))
   }
 
   @js.native
@@ -2505,21 +2508,21 @@ package alexaforbusiness {
     val METRIC   = "METRIC"
     val IMPERIAL = "IMPERIAL"
 
-    val values = IndexedSeq(METRIC, IMPERIAL)
+    val values = js.Object.freeze(js.Array(METRIC, IMPERIAL))
   }
 
   object EnablementTypeEnum {
     val ENABLED = "ENABLED"
     val PENDING = "PENDING"
 
-    val values = IndexedSeq(ENABLED, PENDING)
+    val values = js.Object.freeze(js.Array(ENABLED, PENDING))
   }
 
   object EnablementTypeFilterEnum {
     val ENABLED = "ENABLED"
     val PENDING = "PENDING"
 
-    val values = IndexedSeq(ENABLED, PENDING)
+    val values = js.Object.freeze(js.Array(ENABLED, PENDING))
   }
 
   object EnrollmentStatusEnum {
@@ -2529,7 +2532,7 @@ package alexaforbusiness {
     val DISASSOCIATING = "DISASSOCIATING"
     val DEREGISTERING  = "DEREGISTERING"
 
-    val values = IndexedSeq(INITIALIZED, PENDING, REGISTERED, DISASSOCIATING, DEREGISTERING)
+    val values = js.Object.freeze(js.Array(INITIALIZED, PENDING, REGISTERED, DISASSOCIATING, DEREGISTERING))
   }
 
   object FeatureEnum {
@@ -2542,7 +2545,8 @@ package alexaforbusiness {
     val SETTINGS        = "SETTINGS"
     val ALL             = "ALL"
 
-    val values = IndexedSeq(BLUETOOTH, VOLUME, NOTIFICATIONS, LISTS, SKILLS, NETWORK_PROFILE, SETTINGS, ALL)
+    val values =
+      js.Object.freeze(js.Array(BLUETOOTH, VOLUME, NOTIFICATIONS, LISTS, SKILLS, NETWORK_PROFILE, SETTINGS, ALL))
   }
 
   /**
@@ -3536,7 +3540,7 @@ package alexaforbusiness {
   object LocaleEnum {
     val `en-US` = "en-US"
 
-    val values = IndexedSeq(`en-US`)
+    val values = js.Object.freeze(js.Array(`en-US`))
   }
 
   /**
@@ -3565,7 +3569,7 @@ package alexaforbusiness {
   object NetworkEapMethodEnum {
     val EAP_TLS = "EAP_TLS"
 
-    val values = IndexedSeq(EAP_TLS)
+    val values = js.Object.freeze(js.Array(EAP_TLS))
   }
 
   /**
@@ -3656,7 +3660,7 @@ package alexaforbusiness {
     val WPA2_PSK        = "WPA2_PSK"
     val WPA2_ENTERPRISE = "WPA2_ENTERPRISE"
 
-    val values = IndexedSeq(OPEN, WEP, WPA_PSK, WPA2_PSK, WPA2_ENTERPRISE)
+    val values = js.Object.freeze(js.Array(OPEN, WEP, WPA_PSK, WPA2_PSK, WPA2_ENTERPRISE))
   }
 
   /**
@@ -3716,7 +3720,7 @@ package alexaforbusiness {
     val WORK   = "WORK"
     val HOME   = "HOME"
 
-    val values = IndexedSeq(MOBILE, WORK, HOME)
+    val values = js.Object.freeze(js.Array(MOBILE, WORK, HOME))
   }
 
   /**
@@ -4027,7 +4031,7 @@ package alexaforbusiness {
     val NO       = "NO"
     val OPTIONAL = "OPTIONAL"
 
-    val values = IndexedSeq(YES, NO, OPTIONAL)
+    val values = js.Object.freeze(js.Array(YES, NO, OPTIONAL))
   }
 
   @js.native
@@ -4641,7 +4645,7 @@ package alexaforbusiness {
   object SipTypeEnum {
     val WORK = "WORK"
 
-    val values = IndexedSeq(WORK)
+    val values = js.Object.freeze(js.Array(WORK))
   }
 
   /**
@@ -4773,7 +4777,7 @@ package alexaforbusiness {
     val PUBLIC  = "PUBLIC"
     val PRIVATE = "PRIVATE"
 
-    val values = IndexedSeq(PUBLIC, PRIVATE)
+    val values = js.Object.freeze(js.Array(PUBLIC, PRIVATE))
   }
 
   object SkillTypeFilterEnum {
@@ -4781,7 +4785,7 @@ package alexaforbusiness {
     val PRIVATE = "PRIVATE"
     val ALL     = "ALL"
 
-    val values = IndexedSeq(PUBLIC, PRIVATE, ALL)
+    val values = js.Object.freeze(js.Array(PUBLIC, PRIVATE, ALL))
   }
 
   /**
@@ -4871,7 +4875,7 @@ package alexaforbusiness {
     val ASC  = "ASC"
     val DESC = "DESC"
 
-    val values = IndexedSeq(ASC, DESC)
+    val values = js.Object.freeze(js.Array(ASC, DESC))
   }
 
   /**
@@ -5020,7 +5024,7 @@ package alexaforbusiness {
     val FAHRENHEIT = "FAHRENHEIT"
     val CELSIUS    = "CELSIUS"
 
-    val values = IndexedSeq(FAHRENHEIT, CELSIUS)
+    val values = js.Object.freeze(js.Array(FAHRENHEIT, CELSIUS))
   }
 
   /**
@@ -5566,6 +5570,6 @@ package alexaforbusiness {
     val ECHO     = "ECHO"
     val COMPUTER = "COMPUTER"
 
-    val values = IndexedSeq(ALEXA, AMAZON, ECHO, COMPUTER)
+    val values = js.Object.freeze(js.Array(ALEXA, AMAZON, ECHO, COMPUTER))
   }
 }
diff --git a/services/amplify/src/main/scala/facade/amazonaws/services/Amplify.scala b/services/amplify/src/main/scala/facade/amazonaws/services/Amplify.scala
index dde943d57..1c55f0410 100644
--- a/services/amplify/src/main/scala/facade/amazonaws/services/Amplify.scala
+++ b/services/amplify/src/main/scala/facade/amazonaws/services/Amplify.scala
@@ -991,15 +991,17 @@ package amplify {
     val REQUESTING_CERTIFICATE = "REQUESTING_CERTIFICATE"
     val UPDATING               = "UPDATING"
 
-    val values = IndexedSeq(
-      PENDING_VERIFICATION,
-      IN_PROGRESS,
-      AVAILABLE,
-      PENDING_DEPLOYMENT,
-      FAILED,
-      CREATING,
-      REQUESTING_CERTIFICATE,
-      UPDATING
+    val values = js.Object.freeze(
+      js.Array(
+        PENDING_VERIFICATION,
+        IN_PROGRESS,
+        AVAILABLE,
+        PENDING_DEPLOYMENT,
+        FAILED,
+        CREATING,
+        REQUESTING_CERTIFICATE,
+        UPDATING
+      )
     )
   }
 
@@ -1238,7 +1240,7 @@ package amplify {
     val CANCELLING   = "CANCELLING"
     val CANCELLED    = "CANCELLED"
 
-    val values = IndexedSeq(PENDING, PROVISIONING, RUNNING, FAILED, SUCCEED, CANCELLING, CANCELLED)
+    val values = js.Object.freeze(js.Array(PENDING, PROVISIONING, RUNNING, FAILED, SUCCEED, CANCELLING, CANCELLED))
   }
 
   /**
@@ -1291,7 +1293,7 @@ package amplify {
     val MANUAL   = "MANUAL"
     val WEB_HOOK = "WEB_HOOK"
 
-    val values = IndexedSeq(RELEASE, RETRY, MANUAL, WEB_HOOK)
+    val values = js.Object.freeze(js.Array(RELEASE, RETRY, MANUAL, WEB_HOOK))
   }
 
   /**
@@ -1578,7 +1580,7 @@ package amplify {
   object PlatformEnum {
     val WEB = "WEB"
 
-    val values = IndexedSeq(WEB)
+    val values = js.Object.freeze(js.Array(WEB))
   }
 
   /**
@@ -1614,7 +1616,7 @@ package amplify {
     val DEVELOPMENT  = "DEVELOPMENT"
     val EXPERIMENTAL = "EXPERIMENTAL"
 
-    val values = IndexedSeq(PRODUCTION, BETA, DEVELOPMENT, EXPERIMENTAL)
+    val values = js.Object.freeze(js.Array(PRODUCTION, BETA, DEVELOPMENT, EXPERIMENTAL))
   }
 
   /**
diff --git a/services/apigateway/src/main/scala/facade/amazonaws/services/APIGateway.scala b/services/apigateway/src/main/scala/facade/amazonaws/services/APIGateway.scala
index f0914a2b6..bbc4e6884 100644
--- a/services/apigateway/src/main/scala/facade/amazonaws/services/APIGateway.scala
+++ b/services/apigateway/src/main/scala/facade/amazonaws/services/APIGateway.scala
@@ -552,7 +552,7 @@ package apigateway {
     val HEADER     = "HEADER"
     val AUTHORIZER = "AUTHORIZER"
 
-    val values = IndexedSeq(HEADER, AUTHORIZER)
+    val values = js.Object.freeze(js.Array(HEADER, AUTHORIZER))
   }
 
   /**
@@ -584,7 +584,7 @@ package apigateway {
   object ApiKeysFormatEnum {
     val csv = "csv"
 
-    val values = IndexedSeq(csv)
+    val values = js.Object.freeze(js.Array(csv))
   }
 
   /**
@@ -670,7 +670,7 @@ package apigateway {
     val REQUEST            = "REQUEST"
     val COGNITO_USER_POOLS = "COGNITO_USER_POOLS"
 
-    val values = IndexedSeq(TOKEN, REQUEST, COGNITO_USER_POOLS)
+    val values = js.Object.freeze(js.Array(TOKEN, REQUEST, COGNITO_USER_POOLS))
   }
 
   /**
@@ -758,7 +758,7 @@ package apigateway {
     val `118`  = "118"
     val `237`  = "237"
 
-    val values = IndexedSeq(`0.5`, `1.6`, `6.1`, `13.5`, `28.4`, `58.2`, `118`, `237`)
+    val values = js.Object.freeze(js.Array(`0.5`, `1.6`, `6.1`, `13.5`, `28.4`, `58.2`, `118`, `237`))
   }
 
   /**
@@ -771,7 +771,8 @@ package apigateway {
     val NOT_AVAILABLE      = "NOT_AVAILABLE"
     val FLUSH_IN_PROGRESS  = "FLUSH_IN_PROGRESS"
 
-    val values = IndexedSeq(CREATE_IN_PROGRESS, AVAILABLE, DELETE_IN_PROGRESS, NOT_AVAILABLE, FLUSH_IN_PROGRESS)
+    val values =
+      js.Object.freeze(js.Array(CREATE_IN_PROGRESS, AVAILABLE, DELETE_IN_PROGRESS, NOT_AVAILABLE, FLUSH_IN_PROGRESS))
   }
 
   /**
@@ -863,14 +864,14 @@ package apigateway {
     val INTERNET = "INTERNET"
     val VPC_LINK = "VPC_LINK"
 
-    val values = IndexedSeq(INTERNET, VPC_LINK)
+    val values = js.Object.freeze(js.Array(INTERNET, VPC_LINK))
   }
 
   object ContentHandlingStrategyEnum {
     val CONVERT_TO_BINARY = "CONVERT_TO_BINARY"
     val CONVERT_TO_TEXT   = "CONVERT_TO_TEXT"
 
-    val values = IndexedSeq(CONVERT_TO_BINARY, CONVERT_TO_TEXT)
+    val values = js.Object.freeze(js.Array(CONVERT_TO_BINARY, CONVERT_TO_TEXT))
   }
 
   /**
@@ -2071,19 +2072,21 @@ package apigateway {
     val RESPONSE_HEADER = "RESPONSE_HEADER"
     val RESPONSE_BODY   = "RESPONSE_BODY"
 
-    val values = IndexedSeq(
-      API,
-      AUTHORIZER,
-      MODEL,
-      RESOURCE,
-      METHOD,
-      PATH_PARAMETER,
-      QUERY_PARAMETER,
-      REQUEST_HEADER,
-      REQUEST_BODY,
-      RESPONSE,
-      RESPONSE_HEADER,
-      RESPONSE_BODY
+    val values = js.Object.freeze(
+      js.Array(
+        API,
+        AUTHORIZER,
+        MODEL,
+        RESOURCE,
+        METHOD,
+        PATH_PARAMETER,
+        QUERY_PARAMETER,
+        REQUEST_HEADER,
+        REQUEST_BODY,
+        RESPONSE,
+        RESPONSE_HEADER,
+        RESPONSE_BODY
+      )
     )
   }
 
@@ -2229,7 +2232,7 @@ package apigateway {
     val UPDATING  = "UPDATING"
     val PENDING   = "PENDING"
 
-    val values = IndexedSeq(AVAILABLE, UPDATING, PENDING)
+    val values = js.Object.freeze(js.Array(AVAILABLE, UPDATING, PENDING))
   }
 
   /**
@@ -2281,7 +2284,7 @@ package apigateway {
     val EDGE     = "EDGE"
     val PRIVATE  = "PRIVATE"
 
-    val values = IndexedSeq(REGIONAL, EDGE, PRIVATE)
+    val values = js.Object.freeze(js.Array(REGIONAL, EDGE, PRIVATE))
   }
 
   /**
@@ -2418,27 +2421,29 @@ package apigateway {
     val THROTTLED                      = "THROTTLED"
     val QUOTA_EXCEEDED                 = "QUOTA_EXCEEDED"
 
-    val values = IndexedSeq(
-      DEFAULT_4XX,
-      DEFAULT_5XX,
-      RESOURCE_NOT_FOUND,
-      UNAUTHORIZED,
-      INVALID_API_KEY,
-      ACCESS_DENIED,
-      AUTHORIZER_FAILURE,
-      AUTHORIZER_CONFIGURATION_ERROR,
-      INVALID_SIGNATURE,
-      EXPIRED_TOKEN,
-      MISSING_AUTHENTICATION_TOKEN,
-      INTEGRATION_FAILURE,
-      INTEGRATION_TIMEOUT,
-      API_CONFIGURATION_ERROR,
-      UNSUPPORTED_MEDIA_TYPE,
-      BAD_REQUEST_PARAMETERS,
-      BAD_REQUEST_BODY,
-      REQUEST_TOO_LARGE,
-      THROTTLED,
-      QUOTA_EXCEEDED
+    val values = js.Object.freeze(
+      js.Array(
+        DEFAULT_4XX,
+        DEFAULT_5XX,
+        RESOURCE_NOT_FOUND,
+        UNAUTHORIZED,
+        INVALID_API_KEY,
+        ACCESS_DENIED,
+        AUTHORIZER_FAILURE,
+        AUTHORIZER_CONFIGURATION_ERROR,
+        INVALID_SIGNATURE,
+        EXPIRED_TOKEN,
+        MISSING_AUTHENTICATION_TOKEN,
+        INTEGRATION_FAILURE,
+        INTEGRATION_TIMEOUT,
+        API_CONFIGURATION_ERROR,
+        UNSUPPORTED_MEDIA_TYPE,
+        BAD_REQUEST_PARAMETERS,
+        BAD_REQUEST_BODY,
+        REQUEST_TOO_LARGE,
+        THROTTLED,
+        QUOTA_EXCEEDED
+      )
     )
   }
 
@@ -3813,14 +3818,14 @@ package apigateway {
     val HTTP_PROXY = "HTTP_PROXY"
     val AWS_PROXY  = "AWS_PROXY"
 
-    val values = IndexedSeq(HTTP, AWS, MOCK, HTTP_PROXY, AWS_PROXY)
+    val values = js.Object.freeze(js.Array(HTTP, AWS, MOCK, HTTP_PROXY, AWS_PROXY))
   }
 
   object LocationStatusTypeEnum {
     val DOCUMENTED   = "DOCUMENTED"
     val UNDOCUMENTED = "UNDOCUMENTED"
 
-    val values = IndexedSeq(DOCUMENTED, UNDOCUMENTED)
+    val values = js.Object.freeze(js.Array(DOCUMENTED, UNDOCUMENTED))
   }
 
   /**
@@ -4051,7 +4056,7 @@ package apigateway {
     val copy    = "copy"
     val test    = "test"
 
-    val values = IndexedSeq(add, remove, replace, move, copy, test)
+    val values = js.Object.freeze(js.Array(add, remove, replace, move, copy, test))
   }
 
   /**
@@ -4308,7 +4313,7 @@ package apigateway {
     val merge     = "merge"
     val overwrite = "overwrite"
 
-    val values = IndexedSeq(merge, overwrite)
+    val values = js.Object.freeze(js.Array(merge, overwrite))
   }
 
   /**
@@ -4348,7 +4353,7 @@ package apigateway {
     val WEEK  = "WEEK"
     val MONTH = "MONTH"
 
-    val values = IndexedSeq(DAY, WEEK, MONTH)
+    val values = js.Object.freeze(js.Array(DAY, WEEK, MONTH))
   }
 
   /**
@@ -4666,7 +4671,7 @@ package apigateway {
     val TLS_1_0 = "TLS_1_0"
     val TLS_1_2 = "TLS_1_2"
 
-    val values = IndexedSeq(TLS_1_0, TLS_1_2)
+    val values = js.Object.freeze(js.Array(TLS_1_0, TLS_1_2))
   }
 
   /**
@@ -5021,7 +5026,8 @@ package apigateway {
     val SUCCEED_WITH_RESPONSE_HEADER    = "SUCCEED_WITH_RESPONSE_HEADER"
     val SUCCEED_WITHOUT_RESPONSE_HEADER = "SUCCEED_WITHOUT_RESPONSE_HEADER"
 
-    val values = IndexedSeq(FAIL_WITH_403, SUCCEED_WITH_RESPONSE_HEADER, SUCCEED_WITHOUT_RESPONSE_HEADER)
+    val values =
+      js.Object.freeze(js.Array(FAIL_WITH_403, SUCCEED_WITH_RESPONSE_HEADER, SUCCEED_WITHOUT_RESPONSE_HEADER))
   }
 
   /**
@@ -5805,7 +5811,7 @@ package apigateway {
     val DELETING  = "DELETING"
     val FAILED    = "FAILED"
 
-    val values = IndexedSeq(AVAILABLE, PENDING, DELETING, FAILED)
+    val values = js.Object.freeze(js.Array(AVAILABLE, PENDING, DELETING, FAILED))
   }
 
   /**
diff --git a/services/apigatewayv2/src/main/scala/facade/amazonaws/services/ApiGatewayV2.scala b/services/apigatewayv2/src/main/scala/facade/amazonaws/services/ApiGatewayV2.scala
index 846a243b9..170a3a0db 100644
--- a/services/apigatewayv2/src/main/scala/facade/amazonaws/services/ApiGatewayV2.scala
+++ b/services/apigatewayv2/src/main/scala/facade/amazonaws/services/ApiGatewayV2.scala
@@ -368,7 +368,7 @@ package apigatewayv2 {
     val AWS_IAM = "AWS_IAM"
     val CUSTOM  = "CUSTOM"
 
-    val values = IndexedSeq(NONE, AWS_IAM, CUSTOM)
+    val values = js.Object.freeze(js.Array(NONE, AWS_IAM, CUSTOM))
   }
 
   /**
@@ -426,7 +426,7 @@ package apigatewayv2 {
   object AuthorizerTypeEnum {
     val REQUEST = "REQUEST"
 
-    val values = IndexedSeq(REQUEST)
+    val values = js.Object.freeze(js.Array(REQUEST))
   }
 
   /**
@@ -436,7 +436,7 @@ package apigatewayv2 {
     val INTERNET = "INTERNET"
     val VPC_LINK = "VPC_LINK"
 
-    val values = IndexedSeq(INTERNET, VPC_LINK)
+    val values = js.Object.freeze(js.Array(INTERNET, VPC_LINK))
   }
 
   /**
@@ -446,7 +446,7 @@ package apigatewayv2 {
     val CONVERT_TO_BINARY = "CONVERT_TO_BINARY"
     val CONVERT_TO_TEXT   = "CONVERT_TO_TEXT"
 
-    val values = IndexedSeq(CONVERT_TO_BINARY, CONVERT_TO_TEXT)
+    val values = js.Object.freeze(js.Array(CONVERT_TO_BINARY, CONVERT_TO_TEXT))
   }
 
   @js.native
@@ -1518,7 +1518,7 @@ package apigatewayv2 {
     val FAILED   = "FAILED"
     val DEPLOYED = "DEPLOYED"
 
-    val values = IndexedSeq(PENDING, FAILED, DEPLOYED)
+    val values = js.Object.freeze(js.Array(PENDING, FAILED, DEPLOYED))
   }
 
   /**
@@ -1601,7 +1601,7 @@ package apigatewayv2 {
     val AVAILABLE = "AVAILABLE"
     val UPDATING  = "UPDATING"
 
-    val values = IndexedSeq(AVAILABLE, UPDATING)
+    val values = js.Object.freeze(js.Array(AVAILABLE, UPDATING))
   }
 
   /**
@@ -1611,7 +1611,7 @@ package apigatewayv2 {
     val REGIONAL = "REGIONAL"
     val EDGE     = "EDGE"
 
-    val values = IndexedSeq(REGIONAL, EDGE)
+    val values = js.Object.freeze(js.Array(REGIONAL, EDGE))
   }
 
   @js.native
@@ -2861,7 +2861,7 @@ package apigatewayv2 {
     val HTTP_PROXY = "HTTP_PROXY"
     val AWS_PROXY  = "AWS_PROXY"
 
-    val values = IndexedSeq(AWS, HTTP, MOCK, HTTP_PROXY, AWS_PROXY)
+    val values = js.Object.freeze(js.Array(AWS, HTTP, MOCK, HTTP_PROXY, AWS_PROXY))
   }
 
   /**
@@ -2872,7 +2872,7 @@ package apigatewayv2 {
     val INFO    = "INFO"
     val `false` = "false"
 
-    val values = IndexedSeq(ERROR, INFO, `false`)
+    val values = js.Object.freeze(js.Array(ERROR, INFO, `false`))
   }
 
   /**
@@ -2935,7 +2935,7 @@ package apigatewayv2 {
     val NEVER             = "NEVER"
     val WHEN_NO_TEMPLATES = "WHEN_NO_TEMPLATES"
 
-    val values = IndexedSeq(WHEN_NO_MATCH, NEVER, WHEN_NO_TEMPLATES)
+    val values = js.Object.freeze(js.Array(WHEN_NO_MATCH, NEVER, WHEN_NO_TEMPLATES))
   }
 
   /**
@@ -2944,7 +2944,7 @@ package apigatewayv2 {
   object ProtocolTypeEnum {
     val WEBSOCKET = "WEBSOCKET"
 
-    val values = IndexedSeq(WEBSOCKET)
+    val values = js.Object.freeze(js.Array(WEBSOCKET))
   }
 
   /**
@@ -3071,7 +3071,7 @@ package apigatewayv2 {
     val TLS_1_0 = "TLS_1_0"
     val TLS_1_2 = "TLS_1_2"
 
-    val values = IndexedSeq(TLS_1_0, TLS_1_2)
+    val values = js.Object.freeze(js.Array(TLS_1_0, TLS_1_2))
   }
 
   /**
diff --git a/services/applicationautoscaling/src/main/scala/facade/amazonaws/services/ApplicationAutoScaling.scala b/services/applicationautoscaling/src/main/scala/facade/amazonaws/services/ApplicationAutoScaling.scala
index edc0d710d..76adb1fd8 100644
--- a/services/applicationautoscaling/src/main/scala/facade/amazonaws/services/ApplicationAutoScaling.scala
+++ b/services/applicationautoscaling/src/main/scala/facade/amazonaws/services/ApplicationAutoScaling.scala
@@ -102,7 +102,7 @@ package applicationautoscaling {
     val PercentChangeInCapacity = "PercentChangeInCapacity"
     val ExactCapacity           = "ExactCapacity"
 
-    val values = IndexedSeq(ChangeInCapacity, PercentChangeInCapacity, ExactCapacity)
+    val values = js.Object.freeze(js.Array(ChangeInCapacity, PercentChangeInCapacity, ExactCapacity))
   }
 
   /**
@@ -474,7 +474,7 @@ package applicationautoscaling {
     val Minimum = "Minimum"
     val Maximum = "Maximum"
 
-    val values = IndexedSeq(Average, Minimum, Maximum)
+    val values = js.Object.freeze(js.Array(Average, Minimum, Maximum))
   }
 
   /**
@@ -507,7 +507,7 @@ package applicationautoscaling {
     val SampleCount = "SampleCount"
     val Sum         = "Sum"
 
-    val values = IndexedSeq(Average, Minimum, Maximum, SampleCount, Sum)
+    val values = js.Object.freeze(js.Array(Average, Minimum, Maximum, SampleCount, Sum))
   }
 
   object MetricTypeEnum {
@@ -523,18 +523,20 @@ package applicationautoscaling {
     val ECSServiceAverageCPUUtilization          = "ECSServiceAverageCPUUtilization"
     val ECSServiceAverageMemoryUtilization       = "ECSServiceAverageMemoryUtilization"
 
-    val values = IndexedSeq(
-      DynamoDBReadCapacityUtilization,
-      DynamoDBWriteCapacityUtilization,
-      ALBRequestCountPerTarget,
-      RDSReaderAverageCPUUtilization,
-      RDSReaderAverageDatabaseConnections,
-      EC2SpotFleetRequestAverageCPUUtilization,
-      EC2SpotFleetRequestAverageNetworkIn,
-      EC2SpotFleetRequestAverageNetworkOut,
-      SageMakerVariantInvocationsPerInstance,
-      ECSServiceAverageCPUUtilization,
-      ECSServiceAverageMemoryUtilization
+    val values = js.Object.freeze(
+      js.Array(
+        DynamoDBReadCapacityUtilization,
+        DynamoDBWriteCapacityUtilization,
+        ALBRequestCountPerTarget,
+        RDSReaderAverageCPUUtilization,
+        RDSReaderAverageDatabaseConnections,
+        EC2SpotFleetRequestAverageCPUUtilization,
+        EC2SpotFleetRequestAverageNetworkIn,
+        EC2SpotFleetRequestAverageNetworkOut,
+        SageMakerVariantInvocationsPerInstance,
+        ECSServiceAverageCPUUtilization,
+        ECSServiceAverageMemoryUtilization
+      )
     )
   }
 
@@ -542,7 +544,7 @@ package applicationautoscaling {
     val StepScaling           = "StepScaling"
     val TargetTrackingScaling = "TargetTrackingScaling"
 
-    val values = IndexedSeq(StepScaling, TargetTrackingScaling)
+    val values = js.Object.freeze(js.Array(StepScaling, TargetTrackingScaling))
   }
 
   /**
@@ -734,18 +736,20 @@ package applicationautoscaling {
     val `sagemaker:variant:DesiredInstanceCount`       = "sagemaker:variant:DesiredInstanceCount"
     val `custom-resource:ResourceType:Property`        = "custom-resource:ResourceType:Property"
 
-    val values = IndexedSeq(
-      `ecs:service:DesiredCount`,
-      `ec2:spot-fleet-request:TargetCapacity`,
-      `elasticmapreduce:instancegroup:InstanceCount`,
-      `appstream:fleet:DesiredCapacity`,
-      `dynamodb:table:ReadCapacityUnits`,
-      `dynamodb:table:WriteCapacityUnits`,
-      `dynamodb:index:ReadCapacityUnits`,
-      `dynamodb:index:WriteCapacityUnits`,
-      `rds:cluster:ReadReplicaCount`,
-      `sagemaker:variant:DesiredInstanceCount`,
-      `custom-resource:ResourceType:Property`
+    val values = js.Object.freeze(
+      js.Array(
+        `ecs:service:DesiredCount`,
+        `ec2:spot-fleet-request:TargetCapacity`,
+        `elasticmapreduce:instancegroup:InstanceCount`,
+        `appstream:fleet:DesiredCapacity`,
+        `dynamodb:table:ReadCapacityUnits`,
+        `dynamodb:table:WriteCapacityUnits`,
+        `dynamodb:index:ReadCapacityUnits`,
+        `dynamodb:index:WriteCapacityUnits`,
+        `rds:cluster:ReadReplicaCount`,
+        `sagemaker:variant:DesiredInstanceCount`,
+        `custom-resource:ResourceType:Property`
+      )
     )
   }
 
@@ -866,7 +870,7 @@ package applicationautoscaling {
     val Unfulfilled = "Unfulfilled"
     val Failed      = "Failed"
 
-    val values = IndexedSeq(Pending, InProgress, Successful, Overridden, Unfulfilled, Failed)
+    val values = js.Object.freeze(js.Array(Pending, InProgress, Successful, Overridden, Unfulfilled, Failed))
   }
 
   /**
@@ -977,7 +981,8 @@ package applicationautoscaling {
     val sagemaker         = "sagemaker"
     val `custom-resource` = "custom-resource"
 
-    val values = IndexedSeq(ecs, elasticmapreduce, ec2, appstream, dynamodb, rds, sagemaker, `custom-resource`)
+    val values =
+      js.Object.freeze(js.Array(ecs, elasticmapreduce, ec2, appstream, dynamodb, rds, sagemaker, `custom-resource`))
   }
 
   /**
diff --git a/services/applicationdiscovery/src/main/scala/facade/amazonaws/services/ApplicationDiscovery.scala b/services/applicationdiscovery/src/main/scala/facade/amazonaws/services/ApplicationDiscovery.scala
index 2b4d64078..da4e5479b 100644
--- a/services/applicationdiscovery/src/main/scala/facade/amazonaws/services/ApplicationDiscovery.scala
+++ b/services/applicationdiscovery/src/main/scala/facade/amazonaws/services/ApplicationDiscovery.scala
@@ -278,7 +278,7 @@ package applicationdiscovery {
     val BLACKLISTED = "BLACKLISTED"
     val SHUTDOWN    = "SHUTDOWN"
 
-    val values = IndexedSeq(HEALTHY, UNHEALTHY, RUNNING, UNKNOWN, BLACKLISTED, SHUTDOWN)
+    val values = js.Object.freeze(js.Array(HEALTHY, UNHEALTHY, RUNNING, UNKNOWN, BLACKLISTED, SHUTDOWN))
   }
 
   @js.native
@@ -342,7 +342,7 @@ package applicationdiscovery {
     val INTERNAL_SERVER_ERROR = "INTERNAL_SERVER_ERROR"
     val OVER_LIMIT            = "OVER_LIMIT"
 
-    val values = IndexedSeq(NOT_FOUND, INTERNAL_SERVER_ERROR, OVER_LIMIT)
+    val values = js.Object.freeze(js.Array(NOT_FOUND, INTERNAL_SERVER_ERROR, OVER_LIMIT))
   }
 
   @js.native
@@ -383,7 +383,7 @@ package applicationdiscovery {
     val CONNECTION  = "CONNECTION"
     val APPLICATION = "APPLICATION"
 
-    val values = IndexedSeq(SERVER, PROCESS, CONNECTION, APPLICATION)
+    val values = js.Object.freeze(js.Array(SERVER, PROCESS, CONNECTION, APPLICATION))
   }
 
   /**
@@ -464,7 +464,9 @@ package applicationdiscovery {
     val STOP_FAILED       = "STOP_FAILED"
     val INACTIVE          = "INACTIVE"
 
-    val values = IndexedSeq(START_IN_PROGRESS, START_FAILED, ACTIVE, ERROR, STOP_IN_PROGRESS, STOP_FAILED, INACTIVE)
+    val values = js.Object.freeze(
+      js.Array(START_IN_PROGRESS, START_FAILED, ACTIVE, ERROR, STOP_IN_PROGRESS, STOP_FAILED, INACTIVE)
+    )
   }
 
   @js.native
@@ -613,7 +615,7 @@ package applicationdiscovery {
   object DataSourceEnum {
     val AGENT = "AGENT"
 
-    val values = IndexedSeq(AGENT)
+    val values = js.Object.freeze(js.Array(AGENT))
   }
 
   @js.native
@@ -1000,7 +1002,7 @@ package applicationdiscovery {
     val CSV     = "CSV"
     val GRAPHML = "GRAPHML"
 
-    val values = IndexedSeq(CSV, GRAPHML)
+    val values = js.Object.freeze(js.Array(CSV, GRAPHML))
   }
 
   /**
@@ -1075,7 +1077,7 @@ package applicationdiscovery {
     val SUCCEEDED   = "SUCCEEDED"
     val IN_PROGRESS = "IN_PROGRESS"
 
-    val values = IndexedSeq(FAILED, SUCCEEDED, IN_PROGRESS)
+    val values = js.Object.freeze(js.Array(FAILED, SUCCEEDED, IN_PROGRESS))
   }
 
   /**
@@ -1160,18 +1162,20 @@ package applicationdiscovery {
     val DELETE_FAILED_LIMIT_EXCEEDED        = "DELETE_FAILED_LIMIT_EXCEEDED"
     val INTERNAL_ERROR                      = "INTERNAL_ERROR"
 
-    val values = IndexedSeq(
-      IMPORT_IN_PROGRESS,
-      IMPORT_COMPLETE,
-      IMPORT_COMPLETE_WITH_ERRORS,
-      IMPORT_FAILED,
-      IMPORT_FAILED_SERVER_LIMIT_EXCEEDED,
-      IMPORT_FAILED_RECORD_LIMIT_EXCEEDED,
-      DELETE_IN_PROGRESS,
-      DELETE_COMPLETE,
-      DELETE_FAILED,
-      DELETE_FAILED_LIMIT_EXCEEDED,
-      INTERNAL_ERROR
+    val values = js.Object.freeze(
+      js.Array(
+        IMPORT_IN_PROGRESS,
+        IMPORT_COMPLETE,
+        IMPORT_COMPLETE_WITH_ERRORS,
+        IMPORT_FAILED,
+        IMPORT_FAILED_SERVER_LIMIT_EXCEEDED,
+        IMPORT_FAILED_RECORD_LIMIT_EXCEEDED,
+        DELETE_IN_PROGRESS,
+        DELETE_COMPLETE,
+        DELETE_FAILED,
+        DELETE_FAILED_LIMIT_EXCEEDED,
+        INTERNAL_ERROR
+      )
     )
   }
 
@@ -1257,7 +1261,7 @@ package applicationdiscovery {
     val STATUS         = "STATUS"
     val NAME           = "NAME"
 
-    val values = IndexedSeq(IMPORT_TASK_ID, STATUS, NAME)
+    val values = js.Object.freeze(js.Array(IMPORT_TASK_ID, STATUS, NAME))
   }
 
   @js.native
@@ -1714,6 +1718,6 @@ package applicationdiscovery {
     val ASC  = "ASC"
     val DESC = "DESC"
 
-    val values = IndexedSeq(ASC, DESC)
+    val values = js.Object.freeze(js.Array(ASC, DESC))
   }
 }
diff --git a/services/appmesh/src/main/scala/facade/amazonaws/services/AppMesh.scala b/services/appmesh/src/main/scala/facade/amazonaws/services/AppMesh.scala
index 46ec413be..01fc973a1 100644
--- a/services/appmesh/src/main/scala/facade/amazonaws/services/AppMesh.scala
+++ b/services/appmesh/src/main/scala/facade/amazonaws/services/AppMesh.scala
@@ -975,7 +975,7 @@ package appmesh {
     val ALLOW_ALL = "ALLOW_ALL"
     val DROP_ALL  = "DROP_ALL"
 
-    val values = IndexedSeq(ALLOW_ALL, DROP_ALL)
+    val values = js.Object.freeze(js.Array(ALLOW_ALL, DROP_ALL))
   }
 
   /**
@@ -1077,7 +1077,7 @@ package appmesh {
     val PUT     = "PUT"
     val TRACE   = "TRACE"
 
-    val values = IndexedSeq(CONNECT, DELETE, GET, HEAD, OPTIONS, PATCH, POST, PUT, TRACE)
+    val values = js.Object.freeze(js.Array(CONNECT, DELETE, GET, HEAD, OPTIONS, PATCH, POST, PUT, TRACE))
   }
 
   /**
@@ -1184,7 +1184,7 @@ package appmesh {
     val http  = "http"
     val https = "https"
 
-    val values = IndexedSeq(http, https)
+    val values = js.Object.freeze(js.Array(http, https))
   }
 
   /**
@@ -1636,7 +1636,7 @@ package appmesh {
     val DELETED  = "DELETED"
     val INACTIVE = "INACTIVE"
 
-    val values = IndexedSeq(ACTIVE, DELETED, INACTIVE)
+    val values = js.Object.freeze(js.Array(ACTIVE, DELETED, INACTIVE))
   }
 
   /**
@@ -1666,7 +1666,7 @@ package appmesh {
     val http = "http"
     val tcp  = "tcp"
 
-    val values = IndexedSeq(http, tcp)
+    val values = js.Object.freeze(js.Array(http, tcp))
   }
 
   /**
@@ -1814,7 +1814,7 @@ package appmesh {
     val DELETED  = "DELETED"
     val INACTIVE = "INACTIVE"
 
-    val values = IndexedSeq(ACTIVE, DELETED, INACTIVE)
+    val values = js.Object.freeze(js.Array(ACTIVE, DELETED, INACTIVE))
   }
 
   /**
@@ -2356,7 +2356,7 @@ package appmesh {
     val DELETED  = "DELETED"
     val INACTIVE = "INACTIVE"
 
-    val values = IndexedSeq(ACTIVE, DELETED, INACTIVE)
+    val values = js.Object.freeze(js.Array(ACTIVE, DELETED, INACTIVE))
   }
 
   /**
@@ -2500,7 +2500,7 @@ package appmesh {
     val DELETED  = "DELETED"
     val INACTIVE = "INACTIVE"
 
-    val values = IndexedSeq(ACTIVE, DELETED, INACTIVE)
+    val values = js.Object.freeze(js.Array(ACTIVE, DELETED, INACTIVE))
   }
 
   /**
@@ -2645,7 +2645,7 @@ package appmesh {
     val DELETED  = "DELETED"
     val INACTIVE = "INACTIVE"
 
-    val values = IndexedSeq(ACTIVE, DELETED, INACTIVE)
+    val values = js.Object.freeze(js.Array(ACTIVE, DELETED, INACTIVE))
   }
 
   /**
diff --git a/services/appstream/src/main/scala/facade/amazonaws/services/AppStream.scala b/services/appstream/src/main/scala/facade/amazonaws/services/AppStream.scala
index 1cb402680..3d148ae31 100644
--- a/services/appstream/src/main/scala/facade/amazonaws/services/AppStream.scala
+++ b/services/appstream/src/main/scala/facade/amazonaws/services/AppStream.scala
@@ -293,7 +293,7 @@ package appstream {
   object AccessEndpointTypeEnum {
     val STREAMING = "STREAMING"
 
-    val values = IndexedSeq(STREAMING)
+    val values = js.Object.freeze(js.Array(STREAMING))
   }
 
   object ActionEnum {
@@ -303,12 +303,14 @@ package appstream {
     val FILE_DOWNLOAD                    = "FILE_DOWNLOAD"
     val PRINTING_TO_LOCAL_DEVICE         = "PRINTING_TO_LOCAL_DEVICE"
 
-    val values = IndexedSeq(
-      CLIPBOARD_COPY_FROM_LOCAL_DEVICE,
-      CLIPBOARD_COPY_TO_LOCAL_DEVICE,
-      FILE_UPLOAD,
-      FILE_DOWNLOAD,
-      PRINTING_TO_LOCAL_DEVICE
+    val values = js.Object.freeze(
+      js.Array(
+        CLIPBOARD_COPY_FROM_LOCAL_DEVICE,
+        CLIPBOARD_COPY_TO_LOCAL_DEVICE,
+        FILE_UPLOAD,
+        FILE_DOWNLOAD,
+        PRINTING_TO_LOCAL_DEVICE
+      )
     )
   }
 
@@ -432,7 +434,7 @@ package appstream {
     val SAML     = "SAML"
     val USERPOOL = "USERPOOL"
 
-    val values = IndexedSeq(API, SAML, USERPOOL)
+    val values = js.Object.freeze(js.Array(API, SAML, USERPOOL))
   }
 
   @js.native
@@ -1899,7 +1901,7 @@ package appstream {
     val VPC_CONFIGURATION_SECURITY_GROUP_IDS = "VPC_CONFIGURATION_SECURITY_GROUP_IDS"
     val DOMAIN_JOIN_INFO                     = "DOMAIN_JOIN_INFO"
 
-    val values = IndexedSeq(VPC_CONFIGURATION, VPC_CONFIGURATION_SECURITY_GROUP_IDS, DOMAIN_JOIN_INFO)
+    val values = js.Object.freeze(js.Array(VPC_CONFIGURATION, VPC_CONFIGURATION_SECURITY_GROUP_IDS, DOMAIN_JOIN_INFO))
   }
 
   /**
@@ -1953,34 +1955,36 @@ package appstream {
     val DOMAIN_JOIN_NERR_PASSWORD_EXPIRED                   = "DOMAIN_JOIN_NERR_PASSWORD_EXPIRED"
     val DOMAIN_JOIN_INTERNAL_SERVICE_ERROR                  = "DOMAIN_JOIN_INTERNAL_SERVICE_ERROR"
 
-    val values = IndexedSeq(
-      IAM_SERVICE_ROLE_MISSING_ENI_DESCRIBE_ACTION,
-      IAM_SERVICE_ROLE_MISSING_ENI_CREATE_ACTION,
-      IAM_SERVICE_ROLE_MISSING_ENI_DELETE_ACTION,
-      NETWORK_INTERFACE_LIMIT_EXCEEDED,
-      INTERNAL_SERVICE_ERROR,
-      IAM_SERVICE_ROLE_IS_MISSING,
-      STS_DISABLED_IN_REGION,
-      SUBNET_HAS_INSUFFICIENT_IP_ADDRESSES,
-      IAM_SERVICE_ROLE_MISSING_DESCRIBE_SUBNET_ACTION,
-      SUBNET_NOT_FOUND,
-      IMAGE_NOT_FOUND,
-      INVALID_SUBNET_CONFIGURATION,
-      SECURITY_GROUPS_NOT_FOUND,
-      IGW_NOT_ATTACHED,
-      IAM_SERVICE_ROLE_MISSING_DESCRIBE_SECURITY_GROUPS_ACTION,
-      DOMAIN_JOIN_ERROR_FILE_NOT_FOUND,
-      DOMAIN_JOIN_ERROR_ACCESS_DENIED,
-      DOMAIN_JOIN_ERROR_LOGON_FAILURE,
-      DOMAIN_JOIN_ERROR_INVALID_PARAMETER,
-      DOMAIN_JOIN_ERROR_MORE_DATA,
-      DOMAIN_JOIN_ERROR_NO_SUCH_DOMAIN,
-      DOMAIN_JOIN_ERROR_NOT_SUPPORTED,
-      DOMAIN_JOIN_NERR_INVALID_WORKGROUP_NAME,
-      DOMAIN_JOIN_NERR_WORKSTATION_NOT_STARTED,
-      DOMAIN_JOIN_ERROR_DS_MACHINE_ACCOUNT_QUOTA_EXCEEDED,
-      DOMAIN_JOIN_NERR_PASSWORD_EXPIRED,
-      DOMAIN_JOIN_INTERNAL_SERVICE_ERROR
+    val values = js.Object.freeze(
+      js.Array(
+        IAM_SERVICE_ROLE_MISSING_ENI_DESCRIBE_ACTION,
+        IAM_SERVICE_ROLE_MISSING_ENI_CREATE_ACTION,
+        IAM_SERVICE_ROLE_MISSING_ENI_DELETE_ACTION,
+        NETWORK_INTERFACE_LIMIT_EXCEEDED,
+        INTERNAL_SERVICE_ERROR,
+        IAM_SERVICE_ROLE_IS_MISSING,
+        STS_DISABLED_IN_REGION,
+        SUBNET_HAS_INSUFFICIENT_IP_ADDRESSES,
+        IAM_SERVICE_ROLE_MISSING_DESCRIBE_SUBNET_ACTION,
+        SUBNET_NOT_FOUND,
+        IMAGE_NOT_FOUND,
+        INVALID_SUBNET_CONFIGURATION,
+        SECURITY_GROUPS_NOT_FOUND,
+        IGW_NOT_ATTACHED,
+        IAM_SERVICE_ROLE_MISSING_DESCRIBE_SECURITY_GROUPS_ACTION,
+        DOMAIN_JOIN_ERROR_FILE_NOT_FOUND,
+        DOMAIN_JOIN_ERROR_ACCESS_DENIED,
+        DOMAIN_JOIN_ERROR_LOGON_FAILURE,
+        DOMAIN_JOIN_ERROR_INVALID_PARAMETER,
+        DOMAIN_JOIN_ERROR_MORE_DATA,
+        DOMAIN_JOIN_ERROR_NO_SUCH_DOMAIN,
+        DOMAIN_JOIN_ERROR_NOT_SUPPORTED,
+        DOMAIN_JOIN_NERR_INVALID_WORKGROUP_NAME,
+        DOMAIN_JOIN_NERR_WORKSTATION_NOT_STARTED,
+        DOMAIN_JOIN_ERROR_DS_MACHINE_ACCOUNT_QUOTA_EXCEEDED,
+        DOMAIN_JOIN_NERR_PASSWORD_EXPIRED,
+        DOMAIN_JOIN_INTERNAL_SERVICE_ERROR
+      )
     )
   }
 
@@ -1990,14 +1994,14 @@ package appstream {
     val STOPPING = "STOPPING"
     val STOPPED  = "STOPPED"
 
-    val values = IndexedSeq(STARTING, RUNNING, STOPPING, STOPPED)
+    val values = js.Object.freeze(js.Array(STARTING, RUNNING, STOPPING, STOPPED))
   }
 
   object FleetTypeEnum {
     val ALWAYS_ON = "ALWAYS_ON"
     val ON_DEMAND = "ON_DEMAND"
 
-    val values = IndexedSeq(ALWAYS_ON, ON_DEMAND)
+    val values = js.Object.freeze(js.Array(ALWAYS_ON, ON_DEMAND))
   }
 
   /**
@@ -2144,8 +2148,9 @@ package appstream {
     val DELETING       = "DELETING"
     val FAILED         = "FAILED"
 
-    val values =
-      IndexedSeq(PENDING, UPDATING_AGENT, RUNNING, STOPPING, STOPPED, REBOOTING, SNAPSHOTTING, DELETING, FAILED)
+    val values = js.Object.freeze(
+      js.Array(PENDING, UPDATING_AGENT, RUNNING, STOPPING, STOPPED, REBOOTING, SNAPSHOTTING, DELETING, FAILED)
+    )
   }
 
   /**
@@ -2173,7 +2178,7 @@ package appstream {
     val INTERNAL_ERROR    = "INTERNAL_ERROR"
     val IMAGE_UNAVAILABLE = "IMAGE_UNAVAILABLE"
 
-    val values = IndexedSeq(INTERNAL_ERROR, IMAGE_UNAVAILABLE)
+    val values = js.Object.freeze(js.Array(INTERNAL_ERROR, IMAGE_UNAVAILABLE))
   }
 
   /**
@@ -2204,7 +2209,7 @@ package appstream {
     val COPYING   = "COPYING"
     val DELETING  = "DELETING"
 
-    val values = IndexedSeq(PENDING, AVAILABLE, FAILED, COPYING, DELETING)
+    val values = js.Object.freeze(js.Array(PENDING, AVAILABLE, FAILED, COPYING, DELETING))
   }
 
   /**
@@ -2233,7 +2238,7 @@ package appstream {
     val IMAGE_BUILDER_NOT_AVAILABLE = "IMAGE_BUILDER_NOT_AVAILABLE"
     val IMAGE_COPY_FAILURE          = "IMAGE_COPY_FAILURE"
 
-    val values = IndexedSeq(INTERNAL_ERROR, IMAGE_BUILDER_NOT_AVAILABLE, IMAGE_COPY_FAILURE)
+    val values = js.Object.freeze(js.Array(INTERNAL_ERROR, IMAGE_BUILDER_NOT_AVAILABLE, IMAGE_COPY_FAILURE))
   }
 
   /**
@@ -2369,7 +2374,7 @@ package appstream {
     val SUPPRESS = "SUPPRESS"
     val RESEND   = "RESEND"
 
-    val values = IndexedSeq(SUPPRESS, RESEND)
+    val values = js.Object.freeze(js.Array(SUPPRESS, RESEND))
   }
 
   /**
@@ -2397,7 +2402,7 @@ package appstream {
     val ENABLED  = "ENABLED"
     val DISABLED = "DISABLED"
 
-    val values = IndexedSeq(ENABLED, DISABLED)
+    val values = js.Object.freeze(js.Array(ENABLED, DISABLED))
   }
 
   object PlatformTypeEnum {
@@ -2405,7 +2410,7 @@ package appstream {
     val WINDOWS_SERVER_2016 = "WINDOWS_SERVER_2016"
     val WINDOWS_SERVER_2019 = "WINDOWS_SERVER_2019"
 
-    val values = IndexedSeq(WINDOWS, WINDOWS_SERVER_2016, WINDOWS_SERVER_2019)
+    val values = js.Object.freeze(js.Array(WINDOWS, WINDOWS_SERVER_2016, WINDOWS_SERVER_2019))
   }
 
   /**
@@ -2506,7 +2511,7 @@ package appstream {
     val CONNECTED     = "CONNECTED"
     val NOT_CONNECTED = "NOT_CONNECTED"
 
-    val values = IndexedSeq(CONNECTED, NOT_CONNECTED)
+    val values = js.Object.freeze(js.Array(CONNECTED, NOT_CONNECTED))
   }
 
   /**
@@ -2517,7 +2522,7 @@ package appstream {
     val PENDING = "PENDING"
     val EXPIRED = "EXPIRED"
 
-    val values = IndexedSeq(ACTIVE, PENDING, EXPIRED)
+    val values = js.Object.freeze(js.Array(ACTIVE, PENDING, EXPIRED))
   }
 
   /**
@@ -2607,16 +2612,18 @@ package appstream {
     val USER_SETTINGS                  = "USER_SETTINGS"
     val ACCESS_ENDPOINTS               = "ACCESS_ENDPOINTS"
 
-    val values = IndexedSeq(
-      STORAGE_CONNECTORS,
-      STORAGE_CONNECTOR_HOMEFOLDERS,
-      STORAGE_CONNECTOR_GOOGLE_DRIVE,
-      STORAGE_CONNECTOR_ONE_DRIVE,
-      REDIRECT_URL,
-      FEEDBACK_URL,
-      THEME_NAME,
-      USER_SETTINGS,
-      ACCESS_ENDPOINTS
+    val values = js.Object.freeze(
+      js.Array(
+        STORAGE_CONNECTORS,
+        STORAGE_CONNECTOR_HOMEFOLDERS,
+        STORAGE_CONNECTOR_GOOGLE_DRIVE,
+        STORAGE_CONNECTOR_ONE_DRIVE,
+        REDIRECT_URL,
+        FEEDBACK_URL,
+        THEME_NAME,
+        USER_SETTINGS,
+        ACCESS_ENDPOINTS
+      )
     )
   }
 
@@ -2645,7 +2652,7 @@ package appstream {
     val STORAGE_CONNECTOR_ERROR = "STORAGE_CONNECTOR_ERROR"
     val INTERNAL_SERVICE_ERROR  = "INTERNAL_SERVICE_ERROR"
 
-    val values = IndexedSeq(STORAGE_CONNECTOR_ERROR, INTERNAL_SERVICE_ERROR)
+    val values = js.Object.freeze(js.Array(STORAGE_CONNECTOR_ERROR, INTERNAL_SERVICE_ERROR))
   }
 
   @js.native
@@ -2807,7 +2814,7 @@ package appstream {
     val GOOGLE_DRIVE = "GOOGLE_DRIVE"
     val ONE_DRIVE    = "ONE_DRIVE"
 
-    val values = IndexedSeq(HOMEFOLDERS, GOOGLE_DRIVE, ONE_DRIVE)
+    val values = js.Object.freeze(js.Array(HOMEFOLDERS, GOOGLE_DRIVE, ONE_DRIVE))
   }
 
   @js.native
@@ -3090,13 +3097,13 @@ package appstream {
     val ACCESS_DENIED          = "ACCESS_DENIED"
     val INTERNAL_SERVICE_ERROR = "INTERNAL_SERVICE_ERROR"
 
-    val values = IndexedSeq(RESOURCE_NOT_FOUND, ACCESS_DENIED, INTERNAL_SERVICE_ERROR)
+    val values = js.Object.freeze(js.Array(RESOURCE_NOT_FOUND, ACCESS_DENIED, INTERNAL_SERVICE_ERROR))
   }
 
   object UsageReportScheduleEnum {
     val DAILY = "DAILY"
 
-    val values = IndexedSeq(DAILY)
+    val values = js.Object.freeze(js.Array(DAILY))
   }
 
   /**
@@ -3248,7 +3255,7 @@ package appstream {
     val USER_NAME_NOT_FOUND = "USER_NAME_NOT_FOUND"
     val INTERNAL_ERROR      = "INTERNAL_ERROR"
 
-    val values = IndexedSeq(STACK_NOT_FOUND, USER_NAME_NOT_FOUND, INTERNAL_ERROR)
+    val values = js.Object.freeze(js.Array(STACK_NOT_FOUND, USER_NAME_NOT_FOUND, INTERNAL_ERROR))
   }
 
   object VisibilityTypeEnum {
@@ -3256,7 +3263,7 @@ package appstream {
     val PRIVATE = "PRIVATE"
     val SHARED  = "SHARED"
 
-    val values = IndexedSeq(PUBLIC, PRIVATE, SHARED)
+    val values = js.Object.freeze(js.Array(PUBLIC, PRIVATE, SHARED))
   }
 
   /**
diff --git a/services/appsync/src/main/scala/facade/amazonaws/services/AppSync.scala b/services/appsync/src/main/scala/facade/amazonaws/services/AppSync.scala
index 94ccfaf0e..94ab52c64 100644
--- a/services/appsync/src/main/scala/facade/amazonaws/services/AppSync.scala
+++ b/services/appsync/src/main/scala/facade/amazonaws/services/AppSync.scala
@@ -229,7 +229,7 @@ package appsync {
     val AMAZON_COGNITO_USER_POOLS = "AMAZON_COGNITO_USER_POOLS"
     val OPENID_CONNECT            = "OPENID_CONNECT"
 
-    val values = IndexedSeq(API_KEY, AWS_IAM, AMAZON_COGNITO_USER_POOLS, OPENID_CONNECT)
+    val values = js.Object.freeze(js.Array(API_KEY, AWS_IAM, AMAZON_COGNITO_USER_POOLS, OPENID_CONNECT))
   }
 
   /**
@@ -258,7 +258,7 @@ package appsync {
   object AuthorizationTypeEnum {
     val AWS_IAM = "AWS_IAM"
 
-    val values = IndexedSeq(AWS_IAM)
+    val values = js.Object.freeze(js.Array(AWS_IAM))
   }
 
   /**
@@ -651,14 +651,15 @@ package appsync {
     val HTTP                 = "HTTP"
     val RELATIONAL_DATABASE  = "RELATIONAL_DATABASE"
 
-    val values = IndexedSeq(AWS_LAMBDA, AMAZON_DYNAMODB, AMAZON_ELASTICSEARCH, NONE, HTTP, RELATIONAL_DATABASE)
+    val values =
+      js.Object.freeze(js.Array(AWS_LAMBDA, AMAZON_DYNAMODB, AMAZON_ELASTICSEARCH, NONE, HTTP, RELATIONAL_DATABASE))
   }
 
   object DefaultActionEnum {
     val ALLOW = "ALLOW"
     val DENY  = "DENY"
 
-    val values = IndexedSeq(ALLOW, DENY)
+    val values = js.Object.freeze(js.Array(ALLOW, DENY))
   }
 
   @js.native
@@ -907,7 +908,7 @@ package appsync {
     val ERROR = "ERROR"
     val ALL   = "ALL"
 
-    val values = IndexedSeq(NONE, ERROR, ALL)
+    val values = js.Object.freeze(js.Array(NONE, ERROR, ALL))
   }
 
   /**
@@ -1670,7 +1671,7 @@ package appsync {
     val SDL  = "SDL"
     val JSON = "JSON"
 
-    val values = IndexedSeq(SDL, JSON)
+    val values = js.Object.freeze(js.Array(SDL, JSON))
   }
 
   /**
@@ -1747,7 +1748,7 @@ package appsync {
   object RelationalDatabaseSourceTypeEnum {
     val RDS_HTTP_ENDPOINT = "RDS_HTTP_ENDPOINT"
 
-    val values = IndexedSeq(RDS_HTTP_ENDPOINT)
+    val values = js.Object.freeze(js.Array(RDS_HTTP_ENDPOINT))
   }
 
   /**
@@ -1793,7 +1794,7 @@ package appsync {
     val UNIT     = "UNIT"
     val PIPELINE = "PIPELINE"
 
-    val values = IndexedSeq(UNIT, PIPELINE)
+    val values = js.Object.freeze(js.Array(UNIT, PIPELINE))
   }
 
   object SchemaStatusEnum {
@@ -1804,7 +1805,7 @@ package appsync {
     val SUCCESS        = "SUCCESS"
     val NOT_APPLICABLE = "NOT_APPLICABLE"
 
-    val values = IndexedSeq(PROCESSING, ACTIVE, DELETING, FAILED, SUCCESS, NOT_APPLICABLE)
+    val values = js.Object.freeze(js.Array(PROCESSING, ACTIVE, DELETING, FAILED, SUCCESS, NOT_APPLICABLE))
   }
 
   @js.native
@@ -1908,7 +1909,7 @@ package appsync {
     val SDL  = "SDL"
     val JSON = "JSON"
 
-    val values = IndexedSeq(SDL, JSON)
+    val values = js.Object.freeze(js.Array(SDL, JSON))
   }
 
   @js.native
diff --git a/services/athena/src/main/scala/facade/amazonaws/services/Athena.scala b/services/athena/src/main/scala/facade/amazonaws/services/Athena.scala
index e0349766d..6fa016af9 100644
--- a/services/athena/src/main/scala/facade/amazonaws/services/Athena.scala
+++ b/services/athena/src/main/scala/facade/amazonaws/services/Athena.scala
@@ -244,7 +244,7 @@ package athena {
     val NULLABLE = "NULLABLE"
     val UNKNOWN  = "UNKNOWN"
 
-    val values = IndexedSeq(NOT_NULL, NULLABLE, UNKNOWN)
+    val values = js.Object.freeze(js.Array(NOT_NULL, NULLABLE, UNKNOWN))
   }
 
   @js.native
@@ -439,7 +439,7 @@ package athena {
     val SSE_KMS = "SSE_KMS"
     val CSE_KMS = "CSE_KMS"
 
-    val values = IndexedSeq(SSE_S3, SSE_KMS, CSE_KMS)
+    val values = js.Object.freeze(js.Array(SSE_S3, SSE_KMS, CSE_KMS))
   }
 
   @js.native
@@ -836,7 +836,7 @@ package athena {
     val FAILED    = "FAILED"
     val CANCELLED = "CANCELLED"
 
-    val values = IndexedSeq(QUEUED, RUNNING, SUCCEEDED, FAILED, CANCELLED)
+    val values = js.Object.freeze(js.Array(QUEUED, RUNNING, SUCCEEDED, FAILED, CANCELLED))
   }
 
   /**
@@ -1043,7 +1043,7 @@ package athena {
     val DML     = "DML"
     val UTILITY = "UTILITY"
 
-    val values = IndexedSeq(DDL, DML, UTILITY)
+    val values = js.Object.freeze(js.Array(DDL, DML, UTILITY))
   }
 
   @js.native
@@ -1355,7 +1355,7 @@ package athena {
     val ENABLED  = "ENABLED"
     val DISABLED = "DISABLED"
 
-    val values = IndexedSeq(ENABLED, DISABLED)
+    val values = js.Object.freeze(js.Array(ENABLED, DISABLED))
   }
 
   /**
diff --git a/services/autoscaling/src/main/scala/facade/amazonaws/services/AutoScaling.scala b/services/autoscaling/src/main/scala/facade/amazonaws/services/AutoScaling.scala
index 15b6a5dc8..74a526a3b 100644
--- a/services/autoscaling/src/main/scala/facade/amazonaws/services/AutoScaling.scala
+++ b/services/autoscaling/src/main/scala/facade/amazonaws/services/AutoScaling.scala
@@ -2334,20 +2334,22 @@ package autoscaling {
     val EnteringStandby       = "EnteringStandby"
     val Standby               = "Standby"
 
-    val values = IndexedSeq(
-      Pending,
-      `Pending:Wait`,
-      `Pending:Proceed`,
-      Quarantined,
-      InService,
-      Terminating,
-      `Terminating:Wait`,
-      `Terminating:Proceed`,
-      Terminated,
-      Detaching,
-      Detached,
-      EnteringStandby,
-      Standby
+    val values = js.Object.freeze(
+      js.Array(
+        Pending,
+        `Pending:Wait`,
+        `Pending:Proceed`,
+        Quarantined,
+        InService,
+        Terminating,
+        `Terminating:Wait`,
+        `Terminating:Proceed`,
+        Terminated,
+        Detaching,
+        Detached,
+        EnteringStandby,
+        Standby
+      )
     )
   }
 
@@ -2462,7 +2464,7 @@ package autoscaling {
     val SampleCount = "SampleCount"
     val Sum         = "Sum"
 
-    val values = IndexedSeq(Average, Minimum, Maximum, SampleCount, Sum)
+    val values = js.Object.freeze(js.Array(Average, Minimum, Maximum, SampleCount, Sum))
   }
 
   object MetricTypeEnum {
@@ -2471,8 +2473,9 @@ package autoscaling {
     val ASGAverageNetworkOut     = "ASGAverageNetworkOut"
     val ALBRequestCountPerTarget = "ALBRequestCountPerTarget"
 
-    val values =
-      IndexedSeq(ASGAverageCPUUtilization, ASGAverageNetworkIn, ASGAverageNetworkOut, ALBRequestCountPerTarget)
+    val values = js.Object.freeze(
+      js.Array(ASGAverageCPUUtilization, ASGAverageNetworkIn, ASGAverageNetworkOut, ALBRequestCountPerTarget)
+    )
   }
 
   /**
@@ -2835,19 +2838,21 @@ package autoscaling {
     val Failed                          = "Failed"
     val Cancelled                       = "Cancelled"
 
-    val values = IndexedSeq(
-      PendingSpotBidPlacement,
-      WaitingForSpotInstanceRequestId,
-      WaitingForSpotInstanceId,
-      WaitingForInstanceId,
-      PreInService,
-      InProgress,
-      WaitingForELBConnectionDraining,
-      MidLifecycleAction,
-      WaitingForInstanceWarmup,
-      Successful,
-      Failed,
-      Cancelled
+    val values = js.Object.freeze(
+      js.Array(
+        PendingSpotBidPlacement,
+        WaitingForSpotInstanceRequestId,
+        WaitingForSpotInstanceId,
+        WaitingForInstanceId,
+        PreInService,
+        InProgress,
+        WaitingForELBConnectionDraining,
+        MidLifecycleAction,
+        WaitingForInstanceWarmup,
+        Successful,
+        Failed,
+        Cancelled
+      )
     )
   }
 
diff --git a/services/autoscalingplans/src/main/scala/facade/amazonaws/services/AutoScalingPlans.scala b/services/autoscalingplans/src/main/scala/facade/amazonaws/services/AutoScalingPlans.scala
index d187b119b..9ed6f2c26 100644
--- a/services/autoscalingplans/src/main/scala/facade/amazonaws/services/AutoScalingPlans.scala
+++ b/services/autoscalingplans/src/main/scala/facade/amazonaws/services/AutoScalingPlans.scala
@@ -372,7 +372,8 @@ package autoscalingplans {
     val ScheduledActionMinCapacity = "ScheduledActionMinCapacity"
     val ScheduledActionMaxCapacity = "ScheduledActionMaxCapacity"
 
-    val values = IndexedSeq(CapacityForecast, LoadForecast, ScheduledActionMinCapacity, ScheduledActionMaxCapacity)
+    val values =
+      js.Object.freeze(js.Array(CapacityForecast, LoadForecast, ScheduledActionMinCapacity, ScheduledActionMaxCapacity))
   }
 
   @js.native
@@ -436,7 +437,9 @@ package autoscalingplans {
     val ASGTotalNetworkOut         = "ASGTotalNetworkOut"
     val ALBTargetGroupRequestCount = "ALBTargetGroupRequestCount"
 
-    val values = IndexedSeq(ASGTotalCPUUtilization, ASGTotalNetworkIn, ASGTotalNetworkOut, ALBTargetGroupRequestCount)
+    val values = js.Object.freeze(
+      js.Array(ASGTotalCPUUtilization, ASGTotalNetworkIn, ASGTotalNetworkOut, ALBTargetGroupRequestCount)
+    )
   }
 
   /**
@@ -469,13 +472,13 @@ package autoscalingplans {
     val SampleCount = "SampleCount"
     val Sum         = "Sum"
 
-    val values = IndexedSeq(Average, Minimum, Maximum, SampleCount, Sum)
+    val values = js.Object.freeze(js.Array(Average, Minimum, Maximum, SampleCount, Sum))
   }
 
   object PolicyTypeEnum {
     val TargetTrackingScaling = "TargetTrackingScaling"
 
-    val values = IndexedSeq(TargetTrackingScaling)
+    val values = js.Object.freeze(js.Array(TargetTrackingScaling))
   }
 
   /**
@@ -529,10 +532,8 @@ package autoscalingplans {
     val SetMaxCapacityToForecastCapacity    = "SetMaxCapacityToForecastCapacity"
     val SetMaxCapacityAboveForecastCapacity = "SetMaxCapacityAboveForecastCapacity"
 
-    val values = IndexedSeq(
-      SetForecastCapacityToMaxCapacity,
-      SetMaxCapacityToForecastCapacity,
-      SetMaxCapacityAboveForecastCapacity
+    val values = js.Object.freeze(
+      js.Array(SetForecastCapacityToMaxCapacity, SetMaxCapacityToForecastCapacity, SetMaxCapacityAboveForecastCapacity)
     )
   }
 
@@ -540,7 +541,7 @@ package autoscalingplans {
     val ForecastAndScale = "ForecastAndScale"
     val ForecastOnly     = "ForecastOnly"
 
-    val values = IndexedSeq(ForecastAndScale, ForecastOnly)
+    val values = js.Object.freeze(js.Array(ForecastAndScale, ForecastOnly))
   }
 
   object ScalableDimensionEnum {
@@ -553,15 +554,17 @@ package autoscalingplans {
     val `dynamodb:index:ReadCapacityUnits`             = "dynamodb:index:ReadCapacityUnits"
     val `dynamodb:index:WriteCapacityUnits`            = "dynamodb:index:WriteCapacityUnits"
 
-    val values = IndexedSeq(
-      `autoscaling:autoScalingGroup:DesiredCapacity`,
-      `ecs:service:DesiredCount`,
-      `ec2:spot-fleet-request:TargetCapacity`,
-      `rds:cluster:ReadReplicaCount`,
-      `dynamodb:table:ReadCapacityUnits`,
-      `dynamodb:table:WriteCapacityUnits`,
-      `dynamodb:index:ReadCapacityUnits`,
-      `dynamodb:index:WriteCapacityUnits`
+    val values = js.Object.freeze(
+      js.Array(
+        `autoscaling:autoScalingGroup:DesiredCapacity`,
+        `ecs:service:DesiredCount`,
+        `ec2:spot-fleet-request:TargetCapacity`,
+        `rds:cluster:ReadReplicaCount`,
+        `dynamodb:table:ReadCapacityUnits`,
+        `dynamodb:table:WriteCapacityUnits`,
+        `dynamodb:index:ReadCapacityUnits`,
+        `dynamodb:index:WriteCapacityUnits`
+      )
     )
   }
 
@@ -652,20 +655,22 @@ package autoscalingplans {
     val EC2SpotFleetRequestAverageNetworkIn      = "EC2SpotFleetRequestAverageNetworkIn"
     val EC2SpotFleetRequestAverageNetworkOut     = "EC2SpotFleetRequestAverageNetworkOut"
 
-    val values = IndexedSeq(
-      ASGAverageCPUUtilization,
-      ASGAverageNetworkIn,
-      ASGAverageNetworkOut,
-      DynamoDBReadCapacityUtilization,
-      DynamoDBWriteCapacityUtilization,
-      ECSServiceAverageCPUUtilization,
-      ECSServiceAverageMemoryUtilization,
-      ALBRequestCountPerTarget,
-      RDSReaderAverageCPUUtilization,
-      RDSReaderAverageDatabaseConnections,
-      EC2SpotFleetRequestAverageCPUUtilization,
-      EC2SpotFleetRequestAverageNetworkIn,
-      EC2SpotFleetRequestAverageNetworkOut
+    val values = js.Object.freeze(
+      js.Array(
+        ASGAverageCPUUtilization,
+        ASGAverageNetworkIn,
+        ASGAverageNetworkOut,
+        DynamoDBReadCapacityUtilization,
+        DynamoDBWriteCapacityUtilization,
+        ECSServiceAverageCPUUtilization,
+        ECSServiceAverageMemoryUtilization,
+        ALBRequestCountPerTarget,
+        RDSReaderAverageCPUUtilization,
+        RDSReaderAverageDatabaseConnections,
+        EC2SpotFleetRequestAverageCPUUtilization,
+        EC2SpotFleetRequestAverageNetworkIn,
+        EC2SpotFleetRequestAverageNetworkOut
+      )
     )
   }
 
@@ -761,15 +766,17 @@ package autoscalingplans {
     val UpdateInProgress   = "UpdateInProgress"
     val UpdateFailed       = "UpdateFailed"
 
-    val values = IndexedSeq(
-      Active,
-      ActiveWithProblems,
-      CreationInProgress,
-      CreationFailed,
-      DeletionInProgress,
-      DeletionFailed,
-      UpdateInProgress,
-      UpdateFailed
+    val values = js.Object.freeze(
+      js.Array(
+        Active,
+        ActiveWithProblems,
+        CreationInProgress,
+        CreationFailed,
+        DeletionInProgress,
+        DeletionFailed,
+        UpdateInProgress,
+        UpdateFailed
+      )
     )
   }
 
@@ -803,7 +810,7 @@ package autoscalingplans {
     val KeepExternalPolicies    = "KeepExternalPolicies"
     val ReplaceExternalPolicies = "ReplaceExternalPolicies"
 
-    val values = IndexedSeq(KeepExternalPolicies, ReplaceExternalPolicies)
+    val values = js.Object.freeze(js.Array(KeepExternalPolicies, ReplaceExternalPolicies))
   }
 
   object ScalingStatusCodeEnum {
@@ -811,7 +818,7 @@ package autoscalingplans {
     val PartiallyActive = "PartiallyActive"
     val Active          = "Active"
 
-    val values = IndexedSeq(Inactive, PartiallyActive, Active)
+    val values = js.Object.freeze(js.Array(Inactive, PartiallyActive, Active))
   }
 
   object ServiceNamespaceEnum {
@@ -821,7 +828,7 @@ package autoscalingplans {
     val rds         = "rds"
     val dynamodb    = "dynamodb"
 
-    val values = IndexedSeq(autoscaling, ecs, ec2, rds, dynamodb)
+    val values = js.Object.freeze(js.Array(autoscaling, ecs, ec2, rds, dynamodb))
   }
 
   /**
diff --git a/services/backup/src/main/scala/facade/amazonaws/services/Backup.scala b/services/backup/src/main/scala/facade/amazonaws/services/Backup.scala
index d367397b1..e4eb51039 100644
--- a/services/backup/src/main/scala/facade/amazonaws/services/Backup.scala
+++ b/services/backup/src/main/scala/facade/amazonaws/services/Backup.scala
@@ -292,7 +292,7 @@ package backup {
     val FAILED    = "FAILED"
     val EXPIRED   = "EXPIRED"
 
-    val values = IndexedSeq(CREATED, PENDING, RUNNING, ABORTING, ABORTED, COMPLETED, FAILED, EXPIRED)
+    val values = js.Object.freeze(js.Array(CREATED, PENDING, RUNNING, ABORTING, ABORTED, COMPLETED, FAILED, EXPIRED))
   }
 
   /**
@@ -551,14 +551,16 @@ package backup {
     val BACKUP_PLAN_CREATED     = "BACKUP_PLAN_CREATED"
     val BACKUP_PLAN_MODIFIED    = "BACKUP_PLAN_MODIFIED"
 
-    val values = IndexedSeq(
-      BACKUP_JOB_STARTED,
-      BACKUP_JOB_COMPLETED,
-      RESTORE_JOB_STARTED,
-      RESTORE_JOB_COMPLETED,
-      RECOVERY_POINT_MODIFIED,
-      BACKUP_PLAN_CREATED,
-      BACKUP_PLAN_MODIFIED
+    val values = js.Object.freeze(
+      js.Array(
+        BACKUP_JOB_STARTED,
+        BACKUP_JOB_COMPLETED,
+        RESTORE_JOB_STARTED,
+        RESTORE_JOB_COMPLETED,
+        RECOVERY_POINT_MODIFIED,
+        BACKUP_PLAN_CREATED,
+        BACKUP_PLAN_MODIFIED
+      )
     )
   }
 
@@ -647,7 +649,7 @@ package backup {
   object ConditionTypeEnum {
     val STRINGEQUALS = "STRINGEQUALS"
 
-    val values = IndexedSeq(STRINGEQUALS)
+    val values = js.Object.freeze(js.Array(STRINGEQUALS))
   }
 
   @js.native
@@ -2240,7 +2242,7 @@ package backup {
     val DELETING  = "DELETING"
     val EXPIRED   = "EXPIRED"
 
-    val values = IndexedSeq(COMPLETED, PARTIAL, DELETING, EXPIRED)
+    val values = js.Object.freeze(js.Array(COMPLETED, PARTIAL, DELETING, EXPIRED))
   }
 
   object RestoreJobStatusEnum {
@@ -2250,7 +2252,7 @@ package backup {
     val ABORTED   = "ABORTED"
     val FAILED    = "FAILED"
 
-    val values = IndexedSeq(PENDING, RUNNING, COMPLETED, ABORTED, FAILED)
+    val values = js.Object.freeze(js.Array(PENDING, RUNNING, COMPLETED, ABORTED, FAILED))
   }
 
   /**
@@ -2428,7 +2430,7 @@ package backup {
     val COLD    = "COLD"
     val DELETED = "DELETED"
 
-    val values = IndexedSeq(WARM, COLD, DELETED)
+    val values = js.Object.freeze(js.Array(WARM, COLD, DELETED))
   }
 
   @js.native
diff --git a/services/batch/src/main/scala/facade/amazonaws/services/Batch.scala b/services/batch/src/main/scala/facade/amazonaws/services/Batch.scala
index 80fffb96d..fa8aa60a4 100644
--- a/services/batch/src/main/scala/facade/amazonaws/services/Batch.scala
+++ b/services/batch/src/main/scala/facade/amazonaws/services/Batch.scala
@@ -117,7 +117,7 @@ package batch {
     val N_TO_N     = "N_TO_N"
     val SEQUENTIAL = "SEQUENTIAL"
 
-    val values = IndexedSeq(N_TO_N, SEQUENTIAL)
+    val values = js.Object.freeze(js.Array(N_TO_N, SEQUENTIAL))
   }
 
   /**
@@ -247,7 +247,7 @@ package batch {
     val ENABLED  = "ENABLED"
     val DISABLED = "DISABLED"
 
-    val values = IndexedSeq(ENABLED, DISABLED)
+    val values = js.Object.freeze(js.Array(ENABLED, DISABLED))
   }
 
   object CEStatusEnum {
@@ -258,21 +258,21 @@ package batch {
     val VALID    = "VALID"
     val INVALID  = "INVALID"
 
-    val values = IndexedSeq(CREATING, UPDATING, DELETING, DELETED, VALID, INVALID)
+    val values = js.Object.freeze(js.Array(CREATING, UPDATING, DELETING, DELETED, VALID, INVALID))
   }
 
   object CETypeEnum {
     val MANAGED   = "MANAGED"
     val UNMANAGED = "UNMANAGED"
 
-    val values = IndexedSeq(MANAGED, UNMANAGED)
+    val values = js.Object.freeze(js.Array(MANAGED, UNMANAGED))
   }
 
   object CRTypeEnum {
     val EC2  = "EC2"
     val SPOT = "SPOT"
 
-    val values = IndexedSeq(EC2, SPOT)
+    val values = js.Object.freeze(js.Array(EC2, SPOT))
   }
 
   @js.native
@@ -1018,7 +1018,7 @@ package batch {
     val WRITE = "WRITE"
     val MKNOD = "MKNOD"
 
-    val values = IndexedSeq(READ, WRITE, MKNOD)
+    val values = js.Object.freeze(js.Array(READ, WRITE, MKNOD))
   }
 
   /**
@@ -1043,7 +1043,7 @@ package batch {
     val ENABLED  = "ENABLED"
     val DISABLED = "DISABLED"
 
-    val values = IndexedSeq(ENABLED, DISABLED)
+    val values = js.Object.freeze(js.Array(ENABLED, DISABLED))
   }
 
   object JQStatusEnum {
@@ -1054,7 +1054,7 @@ package batch {
     val VALID    = "VALID"
     val INVALID  = "INVALID"
 
-    val values = IndexedSeq(CREATING, UPDATING, DELETING, DELETED, VALID, INVALID)
+    val values = js.Object.freeze(js.Array(CREATING, UPDATING, DELETING, DELETED, VALID, INVALID))
   }
 
   /**
@@ -1108,7 +1108,7 @@ package batch {
     val container = "container"
     val multinode = "multinode"
 
-    val values = IndexedSeq(container, multinode)
+    val values = js.Object.freeze(js.Array(container, multinode))
   }
 
   /**
@@ -1250,7 +1250,7 @@ package batch {
     val SUCCEEDED = "SUCCEEDED"
     val FAILED    = "FAILED"
 
-    val values = IndexedSeq(SUBMITTED, PENDING, RUNNABLE, STARTING, RUNNING, SUCCEEDED, FAILED)
+    val values = js.Object.freeze(js.Array(SUBMITTED, PENDING, RUNNABLE, STARTING, RUNNING, SUCCEEDED, FAILED))
   }
 
   /**
@@ -1701,7 +1701,7 @@ package batch {
   object ResourceTypeEnum {
     val GPU = "GPU"
 
-    val values = IndexedSeq(GPU)
+    val values = js.Object.freeze(js.Array(GPU))
   }
 
   /**
diff --git a/services/budgetsservice/src/main/scala/facade/amazonaws/services/BudgetsService.scala b/services/budgetsservice/src/main/scala/facade/amazonaws/services/BudgetsService.scala
index f3fb95c93..881027837 100644
--- a/services/budgetsservice/src/main/scala/facade/amazonaws/services/BudgetsService.scala
+++ b/services/budgetsservice/src/main/scala/facade/amazonaws/services/BudgetsService.scala
@@ -194,7 +194,7 @@ package budgetsservice {
     val RI_UTILIZATION = "RI_UTILIZATION"
     val RI_COVERAGE    = "RI_COVERAGE"
 
-    val values = IndexedSeq(USAGE, COST, RI_UTILIZATION, RI_COVERAGE)
+    val values = js.Object.freeze(js.Array(USAGE, COST, RI_UTILIZATION, RI_COVERAGE))
   }
 
   /**
@@ -254,7 +254,7 @@ package budgetsservice {
     val LESS_THAN    = "LESS_THAN"
     val EQUAL_TO     = "EQUAL_TO"
 
-    val values = IndexedSeq(GREATER_THAN, LESS_THAN, EQUAL_TO)
+    val values = js.Object.freeze(js.Array(GREATER_THAN, LESS_THAN, EQUAL_TO))
   }
 
   /**
@@ -840,7 +840,7 @@ package budgetsservice {
     val OK    = "OK"
     val ALARM = "ALARM"
 
-    val values = IndexedSeq(OK, ALARM)
+    val values = js.Object.freeze(js.Array(OK, ALARM))
   }
 
   /**
@@ -850,7 +850,7 @@ package budgetsservice {
     val ACTUAL     = "ACTUAL"
     val FORECASTED = "FORECASTED"
 
-    val values = IndexedSeq(ACTUAL, FORECASTED)
+    val values = js.Object.freeze(js.Array(ACTUAL, FORECASTED))
   }
 
   /**
@@ -935,7 +935,7 @@ package budgetsservice {
     val SNS   = "SNS"
     val EMAIL = "EMAIL"
 
-    val values = IndexedSeq(SNS, EMAIL)
+    val values = js.Object.freeze(js.Array(SNS, EMAIL))
   }
 
   /**
@@ -945,7 +945,7 @@ package budgetsservice {
     val PERCENTAGE     = "PERCENTAGE"
     val ABSOLUTE_VALUE = "ABSOLUTE_VALUE"
 
-    val values = IndexedSeq(PERCENTAGE, ABSOLUTE_VALUE)
+    val values = js.Object.freeze(js.Array(PERCENTAGE, ABSOLUTE_VALUE))
   }
 
   /**
@@ -978,7 +978,7 @@ package budgetsservice {
     val QUARTERLY = "QUARTERLY"
     val ANNUALLY  = "ANNUALLY"
 
-    val values = IndexedSeq(DAILY, MONTHLY, QUARTERLY, ANNUALLY)
+    val values = js.Object.freeze(js.Array(DAILY, MONTHLY, QUARTERLY, ANNUALLY))
   }
 
   /**
diff --git a/services/chime/src/main/scala/facade/amazonaws/services/Chime.scala b/services/chime/src/main/scala/facade/amazonaws/services/Chime.scala
index ee86f12b4..1fa1f4d43 100644
--- a/services/chime/src/main/scala/facade/amazonaws/services/Chime.scala
+++ b/services/chime/src/main/scala/facade/amazonaws/services/Chime.scala
@@ -362,7 +362,7 @@ package chime {
     val EnterpriseLWA       = "EnterpriseLWA"
     val EnterpriseOIDC      = "EnterpriseOIDC"
 
-    val values = IndexedSeq(Team, EnterpriseDirectory, EnterpriseLWA, EnterpriseOIDC)
+    val values = js.Object.freeze(js.Array(Team, EnterpriseDirectory, EnterpriseLWA, EnterpriseOIDC))
   }
 
   @js.native
@@ -649,7 +649,7 @@ package chime {
   object BotTypeEnum {
     val ChatBot = "ChatBot"
 
-    val values = IndexedSeq(ChatBot)
+    val values = js.Object.freeze(js.Array(ChatBot))
   }
 
   /**
@@ -1040,7 +1040,7 @@ package chime {
     val Sent    = "Sent"
     val Failed  = "Failed"
 
-    val values = IndexedSeq(NotSent, Sent, Failed)
+    val values = js.Object.freeze(js.Array(NotSent, Sent, Failed))
   }
 
   object ErrorCodeEnum {
@@ -1055,17 +1055,19 @@ package chime {
     val Throttled          = "Throttled"
     val PreconditionFailed = "PreconditionFailed"
 
-    val values = IndexedSeq(
-      Unauthorized,
-      Forbidden,
-      NotFound,
-      BadRequest,
-      Conflict,
-      ServiceFailure,
-      ServiceUnavailable,
-      Unprocessable,
-      Throttled,
-      PreconditionFailed
+    val values = js.Object.freeze(
+      js.Array(
+        Unauthorized,
+        Forbidden,
+        NotFound,
+        BadRequest,
+        Conflict,
+        ServiceFailure,
+        ServiceUnavailable,
+        Unprocessable,
+        Throttled,
+        PreconditionFailed
+      )
     )
   }
 
@@ -1539,7 +1541,7 @@ package chime {
     val Accepted = "Accepted"
     val Failed   = "Failed"
 
-    val values = IndexedSeq(Pending, Accepted, Failed)
+    val values = js.Object.freeze(js.Array(Pending, Accepted, Failed))
   }
 
   @js.native
@@ -1583,7 +1585,7 @@ package chime {
     val Pro      = "Pro"
     val ProTrial = "ProTrial"
 
-    val values = IndexedSeq(Basic, Plus, Pro, ProTrial)
+    val values = js.Object.freeze(js.Array(Basic, Plus, Pro, ProTrial))
   }
 
   @js.native
@@ -1923,7 +1925,7 @@ package chime {
     val Acquired   = "Acquired"
     val Failed     = "Failed"
 
-    val values = IndexedSeq(Processing, Acquired, Failed)
+    val values = js.Object.freeze(js.Array(Processing, Acquired, Failed))
   }
 
   /**
@@ -1981,7 +1983,7 @@ package chime {
     val TCP = "TCP"
     val UDP = "UDP"
 
-    val values = IndexedSeq(TCP, UDP)
+    val values = js.Object.freeze(js.Array(TCP, UDP))
   }
 
   /**
@@ -2058,7 +2060,7 @@ package chime {
     val UserId           = "UserId"
     val VoiceConnectorId = "VoiceConnectorId"
 
-    val values = IndexedSeq(AccountId, UserId, VoiceConnectorId)
+    val values = js.Object.freeze(js.Array(AccountId, UserId, VoiceConnectorId))
   }
 
   /**
@@ -2157,14 +2159,14 @@ package chime {
     val Failed     = "Failed"
     val Partial    = "Partial"
 
-    val values = IndexedSeq(Processing, Successful, Failed, Partial)
+    val values = js.Object.freeze(js.Array(Processing, Successful, Failed, Partial))
   }
 
   object PhoneNumberProductTypeEnum {
     val BusinessCalling = "BusinessCalling"
     val VoiceConnector  = "VoiceConnector"
 
-    val values = IndexedSeq(BusinessCalling, VoiceConnector)
+    val values = js.Object.freeze(js.Array(BusinessCalling, VoiceConnector))
   }
 
   object PhoneNumberStatusEnum {
@@ -2177,15 +2179,17 @@ package chime {
     val ReleaseFailed     = "ReleaseFailed"
     val DeleteFailed      = "DeleteFailed"
 
-    val values = IndexedSeq(
-      AcquireInProgress,
-      AcquireFailed,
-      Unassigned,
-      Assigned,
-      ReleaseInProgress,
-      DeleteInProgress,
-      ReleaseFailed,
-      DeleteFailed
+    val values = js.Object.freeze(
+      js.Array(
+        AcquireInProgress,
+        AcquireFailed,
+        Unassigned,
+        Assigned,
+        ReleaseInProgress,
+        DeleteInProgress,
+        ReleaseFailed,
+        DeleteFailed
+      )
     )
   }
 
@@ -2193,7 +2197,7 @@ package chime {
     val Local    = "Local"
     val TollFree = "TollFree"
 
-    val values = IndexedSeq(Local, TollFree)
+    val values = js.Object.freeze(js.Array(Local, TollFree))
   }
 
   @js.native
@@ -2367,7 +2371,7 @@ package chime {
     val Registered   = "Registered"
     val Suspended    = "Suspended"
 
-    val values = IndexedSeq(Unregistered, Registered, Suspended)
+    val values = js.Object.freeze(js.Array(Unregistered, Registered, Suspended))
   }
 
   @js.native
diff --git a/services/cloud9/src/main/scala/facade/amazonaws/services/Cloud9.scala b/services/cloud9/src/main/scala/facade/amazonaws/services/Cloud9.scala
index e0af52cf5..ecf6f0c0c 100644
--- a/services/cloud9/src/main/scala/facade/amazonaws/services/Cloud9.scala
+++ b/services/cloud9/src/main/scala/facade/amazonaws/services/Cloud9.scala
@@ -412,7 +412,7 @@ package cloud9 {
     val DELETING      = "DELETING"
     val DELETE_FAILED = "DELETE_FAILED"
 
-    val values = IndexedSeq(CREATED, DELETING, DELETE_FAILED)
+    val values = js.Object.freeze(js.Array(CREATED, DELETING, DELETE_FAILED))
   }
 
   /**
@@ -454,14 +454,14 @@ package cloud9 {
     val stopped    = "stopped"
     val deleting   = "deleting"
 
-    val values = IndexedSeq(error, creating, connecting, ready, stopping, stopped, deleting)
+    val values = js.Object.freeze(js.Array(error, creating, connecting, ready, stopping, stopped, deleting))
   }
 
   object EnvironmentTypeEnum {
     val ssh = "ssh"
     val ec2 = "ec2"
 
-    val values = IndexedSeq(ssh, ec2)
+    val values = js.Object.freeze(js.Array(ssh, ec2))
   }
 
   @js.native
@@ -504,7 +504,7 @@ package cloud9 {
     val `read-write` = "read-write"
     val `read-only`  = "read-only"
 
-    val values = IndexedSeq(`read-write`, `read-only`)
+    val values = js.Object.freeze(js.Array(`read-write`, `read-only`))
   }
 
   object PermissionsEnum {
@@ -512,7 +512,7 @@ package cloud9 {
     val `read-write` = "read-write"
     val `read-only`  = "read-only"
 
-    val values = IndexedSeq(owner, `read-write`, `read-only`)
+    val values = js.Object.freeze(js.Array(owner, `read-write`, `read-only`))
   }
 
   @js.native
diff --git a/services/clouddirectory/src/main/scala/facade/amazonaws/services/CloudDirectory.scala b/services/clouddirectory/src/main/scala/facade/amazonaws/services/CloudDirectory.scala
index 321931f72..5d85ed10e 100644
--- a/services/clouddirectory/src/main/scala/facade/amazonaws/services/CloudDirectory.scala
+++ b/services/clouddirectory/src/main/scala/facade/amazonaws/services/CloudDirectory.scala
@@ -1811,20 +1811,22 @@ package clouddirectory {
     val LimitExceededException          = "LimitExceededException"
     val InternalServiceException        = "InternalServiceException"
 
-    val values = IndexedSeq(
-      ValidationException,
-      InvalidArnException,
-      ResourceNotFoundException,
-      InvalidNextTokenException,
-      AccessDeniedException,
-      NotNodeException,
-      FacetValidationException,
-      CannotListParentOfRootException,
-      NotIndexException,
-      NotPolicyException,
-      DirectoryNotEnabledException,
-      LimitExceededException,
-      InternalServiceException
+    val values = js.Object.freeze(
+      js.Array(
+        ValidationException,
+        InvalidArnException,
+        ResourceNotFoundException,
+        InvalidNextTokenException,
+        AccessDeniedException,
+        NotNodeException,
+        FacetValidationException,
+        CannotListParentOfRootException,
+        NotIndexException,
+        NotPolicyException,
+        DirectoryNotEnabledException,
+        LimitExceededException,
+        InternalServiceException
+      )
     )
   }
 
@@ -2277,7 +2279,7 @@ package clouddirectory {
     val SERIALIZABLE = "SERIALIZABLE"
     val EVENTUAL     = "EVENTUAL"
 
-    val values = IndexedSeq(SERIALIZABLE, EVENTUAL)
+    val values = js.Object.freeze(js.Array(SERIALIZABLE, EVENTUAL))
   }
 
   @js.native
@@ -2844,7 +2846,7 @@ package clouddirectory {
     val DISABLED = "DISABLED"
     val DELETED  = "DELETED"
 
-    val values = IndexedSeq(ENABLED, DISABLED, DELETED)
+    val values = js.Object.freeze(js.Array(ENABLED, DISABLED, DELETED))
   }
 
   @js.native
@@ -3028,7 +3030,7 @@ package clouddirectory {
     val DATETIME = "DATETIME"
     val VARIANT  = "VARIANT"
 
-    val values = IndexedSeq(STRING, BINARY, BOOLEAN, NUMBER, DATETIME, VARIANT)
+    val values = js.Object.freeze(js.Array(STRING, BINARY, BOOLEAN, NUMBER, DATETIME, VARIANT))
   }
 
   /**
@@ -3056,7 +3058,7 @@ package clouddirectory {
     val STATIC  = "STATIC"
     val DYNAMIC = "DYNAMIC"
 
-    val values = IndexedSeq(STATIC, DYNAMIC)
+    val values = js.Object.freeze(js.Array(STATIC, DYNAMIC))
   }
 
   @js.native
@@ -4472,7 +4474,7 @@ package clouddirectory {
     val POLICY    = "POLICY"
     val INDEX     = "INDEX"
 
-    val values = IndexedSeq(NODE, LEAF_NODE, POLICY, INDEX)
+    val values = js.Object.freeze(js.Array(NODE, LEAF_NODE, POLICY, INDEX))
   }
 
   /**
@@ -4624,7 +4626,7 @@ package clouddirectory {
     val INCLUSIVE                  = "INCLUSIVE"
     val EXCLUSIVE                  = "EXCLUSIVE"
 
-    val values = IndexedSeq(FIRST, LAST, LAST_BEFORE_MISSING_VALUES, INCLUSIVE, EXCLUSIVE)
+    val values = js.Object.freeze(js.Array(FIRST, LAST, LAST_BEFORE_MISSING_VALUES, INCLUSIVE, EXCLUSIVE))
   }
 
   @js.native
@@ -4666,7 +4668,7 @@ package clouddirectory {
     val REQUIRED_ALWAYS = "REQUIRED_ALWAYS"
     val NOT_REQUIRED    = "NOT_REQUIRED"
 
-    val values = IndexedSeq(REQUIRED_ALWAYS, NOT_REQUIRED)
+    val values = js.Object.freeze(js.Array(REQUIRED_ALWAYS, NOT_REQUIRED))
   }
 
   /**
@@ -4696,7 +4698,7 @@ package clouddirectory {
     val STRING_FROM_SET   = "STRING_FROM_SET"
     val STRING_LENGTH     = "STRING_LENGTH"
 
-    val values = IndexedSeq(BINARY_LENGTH, NUMBER_COMPARISON, STRING_FROM_SET, STRING_LENGTH)
+    val values = js.Object.freeze(js.Array(BINARY_LENGTH, NUMBER_COMPARISON, STRING_FROM_SET, STRING_LENGTH))
   }
 
   /**
@@ -5027,7 +5029,7 @@ package clouddirectory {
     val CREATE_OR_UPDATE = "CREATE_OR_UPDATE"
     val DELETE           = "DELETE"
 
-    val values = IndexedSeq(CREATE_OR_UPDATE, DELETE)
+    val values = js.Object.freeze(js.Array(CREATE_OR_UPDATE, DELETE))
   }
 
   @js.native
diff --git a/services/cloudformation/src/main/scala/facade/amazonaws/services/CloudFormation.scala b/services/cloudformation/src/main/scala/facade/amazonaws/services/CloudFormation.scala
index bf1bef4c4..e6575873e 100644
--- a/services/cloudformation/src/main/scala/facade/amazonaws/services/CloudFormation.scala
+++ b/services/cloudformation/src/main/scala/facade/amazonaws/services/CloudFormation.scala
@@ -350,7 +350,7 @@ package cloudformation {
     val FAILED    = "FAILED"
     val SKIPPED   = "SKIPPED"
 
-    val values = IndexedSeq(SUCCEEDED, FAILED, SKIPPED)
+    val values = js.Object.freeze(js.Array(SUCCEEDED, FAILED, SKIPPED))
   }
 
   /**
@@ -402,7 +402,7 @@ package cloudformation {
     val CAPABILITY_NAMED_IAM   = "CAPABILITY_NAMED_IAM"
     val CAPABILITY_AUTO_EXPAND = "CAPABILITY_AUTO_EXPAND"
 
-    val values = IndexedSeq(CAPABILITY_IAM, CAPABILITY_NAMED_IAM, CAPABILITY_AUTO_EXPAND)
+    val values = js.Object.freeze(js.Array(CAPABILITY_IAM, CAPABILITY_NAMED_IAM, CAPABILITY_AUTO_EXPAND))
   }
 
   /**
@@ -431,7 +431,7 @@ package cloudformation {
     val Modify = "Modify"
     val Remove = "Remove"
 
-    val values = IndexedSeq(Add, Modify, Remove)
+    val values = js.Object.freeze(js.Array(Add, Modify, Remove))
   }
 
   object ChangeSetStatusEnum {
@@ -441,7 +441,8 @@ package cloudformation {
     val DELETE_COMPLETE    = "DELETE_COMPLETE"
     val FAILED             = "FAILED"
 
-    val values = IndexedSeq(CREATE_PENDING, CREATE_IN_PROGRESS, CREATE_COMPLETE, DELETE_COMPLETE, FAILED)
+    val values =
+      js.Object.freeze(js.Array(CREATE_PENDING, CREATE_IN_PROGRESS, CREATE_COMPLETE, DELETE_COMPLETE, FAILED))
   }
 
   /**
@@ -490,7 +491,7 @@ package cloudformation {
     val CREATE = "CREATE"
     val UPDATE = "UPDATE"
 
-    val values = IndexedSeq(CREATE, UPDATE)
+    val values = js.Object.freeze(js.Array(CREATE, UPDATE))
   }
 
   object ChangeSourceEnum {
@@ -500,13 +501,15 @@ package cloudformation {
     val DirectModification = "DirectModification"
     val Automatic          = "Automatic"
 
-    val values = IndexedSeq(ResourceReference, ParameterReference, ResourceAttribute, DirectModification, Automatic)
+    val values = js.Object.freeze(
+      js.Array(ResourceReference, ParameterReference, ResourceAttribute, DirectModification, Automatic)
+    )
   }
 
   object ChangeTypeEnum {
     val Resource = "Resource"
 
-    val values = IndexedSeq(Resource)
+    val values = js.Object.freeze(js.Array(Resource))
   }
 
   /**
@@ -1550,7 +1553,7 @@ package cloudformation {
     val REMOVE    = "REMOVE"
     val NOT_EQUAL = "NOT_EQUAL"
 
-    val values = IndexedSeq(ADD, REMOVE, NOT_EQUAL)
+    val values = js.Object.freeze(js.Array(ADD, REMOVE, NOT_EQUAL))
   }
 
   /**
@@ -1599,7 +1602,7 @@ package cloudformation {
     val Static  = "Static"
     val Dynamic = "Dynamic"
 
-    val values = IndexedSeq(Static, Dynamic)
+    val values = js.Object.freeze(js.Array(Static, Dynamic))
   }
 
   /**
@@ -1651,7 +1654,9 @@ package cloudformation {
     val EXECUTE_FAILED      = "EXECUTE_FAILED"
     val OBSOLETE            = "OBSOLETE"
 
-    val values = IndexedSeq(UNAVAILABLE, AVAILABLE, EXECUTE_IN_PROGRESS, EXECUTE_COMPLETE, EXECUTE_FAILED, OBSOLETE)
+    val values = js.Object.freeze(
+      js.Array(UNAVAILABLE, AVAILABLE, EXECUTE_IN_PROGRESS, EXECUTE_COMPLETE, EXECUTE_FAILED, OBSOLETE)
+    )
   }
 
   /**
@@ -2204,7 +2209,7 @@ package cloudformation {
     val ROLLBACK   = "ROLLBACK"
     val DELETE     = "DELETE"
 
-    val values = IndexedSeq(DO_NOTHING, ROLLBACK, DELETE)
+    val values = js.Object.freeze(js.Array(DO_NOTHING, ROLLBACK, DELETE))
   }
 
   /**
@@ -2369,7 +2374,7 @@ package cloudformation {
     val False       = "False"
     val Conditional = "Conditional"
 
-    val values = IndexedSeq(True, False, Conditional)
+    val values = js.Object.freeze(js.Array(True, False, Conditional))
   }
 
   object RequiresRecreationEnum {
@@ -2377,7 +2382,7 @@ package cloudformation {
     val Conditionally = "Conditionally"
     val Always        = "Always"
 
-    val values = IndexedSeq(Never, Conditionally, Always)
+    val values = js.Object.freeze(js.Array(Never, Conditionally, Always))
   }
 
   object ResourceAttributeEnum {
@@ -2388,7 +2393,7 @@ package cloudformation {
     val DeletionPolicy = "DeletionPolicy"
     val Tags           = "Tags"
 
-    val values = IndexedSeq(Properties, Metadata, CreationPolicy, UpdatePolicy, DeletionPolicy, Tags)
+    val values = js.Object.freeze(js.Array(Properties, Metadata, CreationPolicy, UpdatePolicy, DeletionPolicy, Tags))
   }
 
   /**
@@ -2458,7 +2463,7 @@ package cloudformation {
     val SUCCESS = "SUCCESS"
     val FAILURE = "FAILURE"
 
-    val values = IndexedSeq(SUCCESS, FAILURE)
+    val values = js.Object.freeze(js.Array(SUCCESS, FAILURE))
   }
 
   object ResourceStatusEnum {
@@ -2473,17 +2478,19 @@ package cloudformation {
     val UPDATE_FAILED      = "UPDATE_FAILED"
     val UPDATE_COMPLETE    = "UPDATE_COMPLETE"
 
-    val values = IndexedSeq(
-      CREATE_IN_PROGRESS,
-      CREATE_FAILED,
-      CREATE_COMPLETE,
-      DELETE_IN_PROGRESS,
-      DELETE_FAILED,
-      DELETE_COMPLETE,
-      DELETE_SKIPPED,
-      UPDATE_IN_PROGRESS,
-      UPDATE_FAILED,
-      UPDATE_COMPLETE
+    val values = js.Object.freeze(
+      js.Array(
+        CREATE_IN_PROGRESS,
+        CREATE_FAILED,
+        CREATE_COMPLETE,
+        DELETE_IN_PROGRESS,
+        DELETE_FAILED,
+        DELETE_COMPLETE,
+        DELETE_SKIPPED,
+        UPDATE_IN_PROGRESS,
+        UPDATE_FAILED,
+        UPDATE_COMPLETE
+      )
     )
   }
 
@@ -2699,7 +2706,7 @@ package cloudformation {
     val DETECTION_FAILED      = "DETECTION_FAILED"
     val DETECTION_COMPLETE    = "DETECTION_COMPLETE"
 
-    val values = IndexedSeq(DETECTION_IN_PROGRESS, DETECTION_FAILED, DETECTION_COMPLETE)
+    val values = js.Object.freeze(js.Array(DETECTION_IN_PROGRESS, DETECTION_FAILED, DETECTION_COMPLETE))
   }
 
   /**
@@ -2754,7 +2761,7 @@ package cloudformation {
     val UNKNOWN     = "UNKNOWN"
     val NOT_CHECKED = "NOT_CHECKED"
 
-    val values = IndexedSeq(DRIFTED, IN_SYNC, UNKNOWN, NOT_CHECKED)
+    val values = js.Object.freeze(js.Array(DRIFTED, IN_SYNC, UNKNOWN, NOT_CHECKED))
   }
 
   /**
@@ -2848,7 +2855,7 @@ package cloudformation {
     val OUTDATED   = "OUTDATED"
     val INOPERABLE = "INOPERABLE"
 
-    val values = IndexedSeq(CURRENT, OUTDATED, INOPERABLE)
+    val values = js.Object.freeze(js.Array(CURRENT, OUTDATED, INOPERABLE))
   }
 
   /**
@@ -3082,7 +3089,7 @@ package cloudformation {
     val DELETED     = "DELETED"
     val NOT_CHECKED = "NOT_CHECKED"
 
-    val values = IndexedSeq(IN_SYNC, MODIFIED, DELETED, NOT_CHECKED)
+    val values = js.Object.freeze(js.Array(IN_SYNC, MODIFIED, DELETED, NOT_CHECKED))
   }
 
   /**
@@ -3221,7 +3228,7 @@ package cloudformation {
     val UPDATE = "UPDATE"
     val DELETE = "DELETE"
 
-    val values = IndexedSeq(CREATE, UPDATE, DELETE)
+    val values = js.Object.freeze(js.Array(CREATE, UPDATE, DELETE))
   }
 
   /**
@@ -3262,7 +3269,7 @@ package cloudformation {
     val FAILED    = "FAILED"
     val CANCELLED = "CANCELLED"
 
-    val values = IndexedSeq(PENDING, RUNNING, SUCCEEDED, FAILED, CANCELLED)
+    val values = js.Object.freeze(js.Array(PENDING, RUNNING, SUCCEEDED, FAILED, CANCELLED))
   }
 
   /**
@@ -3302,7 +3309,7 @@ package cloudformation {
     val STOPPING  = "STOPPING"
     val STOPPED   = "STOPPED"
 
-    val values = IndexedSeq(RUNNING, SUCCEEDED, FAILED, STOPPING, STOPPED)
+    val values = js.Object.freeze(js.Array(RUNNING, SUCCEEDED, FAILED, STOPPING, STOPPED))
   }
 
   /**
@@ -3339,7 +3346,7 @@ package cloudformation {
     val ACTIVE  = "ACTIVE"
     val DELETED = "DELETED"
 
-    val values = IndexedSeq(ACTIVE, DELETED)
+    val values = js.Object.freeze(js.Array(ACTIVE, DELETED))
   }
 
   /**
@@ -3388,24 +3395,26 @@ package cloudformation {
     val UPDATE_ROLLBACK_COMPLETE                     = "UPDATE_ROLLBACK_COMPLETE"
     val REVIEW_IN_PROGRESS                           = "REVIEW_IN_PROGRESS"
 
-    val values = IndexedSeq(
-      CREATE_IN_PROGRESS,
-      CREATE_FAILED,
-      CREATE_COMPLETE,
-      ROLLBACK_IN_PROGRESS,
-      ROLLBACK_FAILED,
-      ROLLBACK_COMPLETE,
-      DELETE_IN_PROGRESS,
-      DELETE_FAILED,
-      DELETE_COMPLETE,
-      UPDATE_IN_PROGRESS,
-      UPDATE_COMPLETE_CLEANUP_IN_PROGRESS,
-      UPDATE_COMPLETE,
-      UPDATE_ROLLBACK_IN_PROGRESS,
-      UPDATE_ROLLBACK_FAILED,
-      UPDATE_ROLLBACK_COMPLETE_CLEANUP_IN_PROGRESS,
-      UPDATE_ROLLBACK_COMPLETE,
-      REVIEW_IN_PROGRESS
+    val values = js.Object.freeze(
+      js.Array(
+        CREATE_IN_PROGRESS,
+        CREATE_FAILED,
+        CREATE_COMPLETE,
+        ROLLBACK_IN_PROGRESS,
+        ROLLBACK_FAILED,
+        ROLLBACK_COMPLETE,
+        DELETE_IN_PROGRESS,
+        DELETE_FAILED,
+        DELETE_COMPLETE,
+        UPDATE_IN_PROGRESS,
+        UPDATE_COMPLETE_CLEANUP_IN_PROGRESS,
+        UPDATE_COMPLETE,
+        UPDATE_ROLLBACK_IN_PROGRESS,
+        UPDATE_ROLLBACK_FAILED,
+        UPDATE_ROLLBACK_COMPLETE_CLEANUP_IN_PROGRESS,
+        UPDATE_ROLLBACK_COMPLETE,
+        REVIEW_IN_PROGRESS
+      )
     )
   }
 
@@ -3545,7 +3554,7 @@ package cloudformation {
     val Original  = "Original"
     val Processed = "Processed"
 
-    val values = IndexedSeq(Original, Processed)
+    val values = js.Object.freeze(js.Array(Original, Processed))
   }
 
   /**
diff --git a/services/cloudfront/src/main/scala/facade/amazonaws/services/CloudFront.scala b/services/cloudfront/src/main/scala/facade/amazonaws/services/CloudFront.scala
index 3bdda0b3b..8914fa944 100644
--- a/services/cloudfront/src/main/scala/facade/amazonaws/services/CloudFront.scala
+++ b/services/cloudfront/src/main/scala/facade/amazonaws/services/CloudFront.scala
@@ -510,7 +510,7 @@ package cloudfront {
     val iam        = "iam"
     val acm        = "acm"
 
-    val values = IndexedSeq(cloudfront, iam, acm)
+    val values = js.Object.freeze(js.Array(cloudfront, iam, acm))
   }
 
   /**
@@ -1733,7 +1733,7 @@ package cloudfront {
     val `origin-request`  = "origin-request"
     val `origin-response` = "origin-response"
 
-    val values = IndexedSeq(`viewer-request`, `viewer-response`, `origin-request`, `origin-response`)
+    val values = js.Object.freeze(js.Array(`viewer-request`, `viewer-response`, `origin-request`, `origin-response`))
   }
 
   /**
@@ -1994,7 +1994,7 @@ package cloudfront {
   object FormatEnum {
     val URLEncoded = "URLEncoded"
 
-    val values = IndexedSeq(URLEncoded)
+    val values = js.Object.freeze(js.Array(URLEncoded))
   }
 
   /**
@@ -2057,7 +2057,7 @@ package cloudfront {
     val whitelist = "whitelist"
     val none      = "none"
 
-    val values = IndexedSeq(blacklist, whitelist, none)
+    val values = js.Object.freeze(js.Array(blacklist, whitelist, none))
   }
 
   /**
@@ -2591,7 +2591,7 @@ package cloudfront {
     val `http1.1` = "http1.1"
     val http2     = "http2"
 
-    val values = IndexedSeq(`http1.1`, http2)
+    val values = js.Object.freeze(js.Array(`http1.1`, http2))
   }
 
   object ICPRecordalStatusEnum {
@@ -2599,7 +2599,7 @@ package cloudfront {
     val SUSPENDED = "SUSPENDED"
     val PENDING   = "PENDING"
 
-    val values = IndexedSeq(APPROVED, SUSPENDED, PENDING)
+    val values = js.Object.freeze(js.Array(APPROVED, SUSPENDED, PENDING))
   }
 
   /**
@@ -2720,7 +2720,7 @@ package cloudfront {
     val whitelist = "whitelist"
     val all       = "all"
 
-    val values = IndexedSeq(none, whitelist, all)
+    val values = js.Object.freeze(js.Array(none, whitelist, all))
   }
 
   /**
@@ -3184,7 +3184,7 @@ package cloudfront {
     val OPTIONS = "OPTIONS"
     val DELETE  = "DELETE"
 
-    val values = IndexedSeq(GET, HEAD, POST, PUT, PATCH, OPTIONS, DELETE)
+    val values = js.Object.freeze(js.Array(GET, HEAD, POST, PUT, PATCH, OPTIONS, DELETE))
   }
 
   object MinimumProtocolVersionEnum {
@@ -3194,7 +3194,7 @@ package cloudfront {
     val `TLSv1.1_2016` = "TLSv1.1_2016"
     val `TLSv1.2_2018` = "TLSv1.2_2018"
 
-    val values = IndexedSeq(SSLv3, TLSv1, TLSv1_2016, `TLSv1.1_2016`, `TLSv1.2_2018`)
+    val values = js.Object.freeze(js.Array(SSLv3, TLSv1, TLSv1_2016, `TLSv1.1_2016`, `TLSv1.2_2018`))
   }
 
   /**
@@ -3373,7 +3373,7 @@ package cloudfront {
     val `match-viewer` = "match-viewer"
     val `https-only`   = "https-only"
 
-    val values = IndexedSeq(`http-only`, `match-viewer`, `https-only`)
+    val values = js.Object.freeze(js.Array(`http-only`, `match-viewer`, `https-only`))
   }
 
   /**
@@ -3450,7 +3450,7 @@ package cloudfront {
     val PriceClass_200 = "PriceClass_200"
     val PriceClass_All = "PriceClass_All"
 
-    val values = IndexedSeq(PriceClass_100, PriceClass_200, PriceClass_All)
+    val values = js.Object.freeze(js.Array(PriceClass_100, PriceClass_200, PriceClass_All))
   }
 
   /**
@@ -3728,7 +3728,7 @@ package cloudfront {
     val `sni-only` = "sni-only"
     val vip        = "vip"
 
-    val values = IndexedSeq(`sni-only`, vip)
+    val values = js.Object.freeze(js.Array(`sni-only`, vip))
   }
 
   /**
@@ -3758,7 +3758,7 @@ package cloudfront {
     val `TLSv1.1` = "TLSv1.1"
     val `TLSv1.2` = "TLSv1.2"
 
-    val values = IndexedSeq(SSLv3, TLSv1, `TLSv1.1`, `TLSv1.2`)
+    val values = js.Object.freeze(js.Array(SSLv3, TLSv1, `TLSv1.1`, `TLSv1.2`))
   }
 
   /**
@@ -4449,6 +4449,6 @@ package cloudfront {
     val `https-only`        = "https-only"
     val `redirect-to-https` = "redirect-to-https"
 
-    val values = IndexedSeq(`allow-all`, `https-only`, `redirect-to-https`)
+    val values = js.Object.freeze(js.Array(`allow-all`, `https-only`, `redirect-to-https`))
   }
 }
diff --git a/services/cloudhsm/src/main/scala/facade/amazonaws/services/CloudHSM.scala b/services/cloudhsm/src/main/scala/facade/amazonaws/services/CloudHSM.scala
index 327c29200..4fd58fd69 100644
--- a/services/cloudhsm/src/main/scala/facade/amazonaws/services/CloudHSM.scala
+++ b/services/cloudhsm/src/main/scala/facade/amazonaws/services/CloudHSM.scala
@@ -158,7 +158,7 @@ package cloudhsm {
     val `5.1` = "5.1"
     val `5.3` = "5.3"
 
-    val values = IndexedSeq(`5.1`, `5.3`)
+    val values = js.Object.freeze(js.Array(`5.1`, `5.3`))
   }
 
   /**
@@ -172,7 +172,7 @@ package cloudhsm {
     val UPDATING = "UPDATING"
     val DEGRADED = "DEGRADED"
 
-    val values = IndexedSeq(READY, UPDATING, DEGRADED)
+    val values = js.Object.freeze(js.Array(READY, UPDATING, DEGRADED))
   }
 
   /**
@@ -695,7 +695,7 @@ package cloudhsm {
     val TERMINATED  = "TERMINATED"
     val DEGRADED    = "DEGRADED"
 
-    val values = IndexedSeq(PENDING, RUNNING, UPDATING, SUSPENDED, TERMINATING, TERMINATED, DEGRADED)
+    val values = js.Object.freeze(js.Array(PENDING, RUNNING, UPDATING, SUSPENDED, TERMINATING, TERMINATED, DEGRADED))
   }
 
   /**
@@ -1045,7 +1045,7 @@ package cloudhsm {
   object SubscriptionTypeEnum {
     val PRODUCTION = "PRODUCTION"
 
-    val values = IndexedSeq(PRODUCTION)
+    val values = js.Object.freeze(js.Array(PRODUCTION))
   }
 
   /**
diff --git a/services/cloudhsmv2/src/main/scala/facade/amazonaws/services/CloudHSMV2.scala b/services/cloudhsmv2/src/main/scala/facade/amazonaws/services/CloudHSMV2.scala
index f1a232cf2..8c7f717ba 100644
--- a/services/cloudhsmv2/src/main/scala/facade/amazonaws/services/CloudHSMV2.scala
+++ b/services/cloudhsmv2/src/main/scala/facade/amazonaws/services/CloudHSMV2.scala
@@ -140,7 +140,7 @@ package cloudhsmv2 {
   object BackupPolicyEnum {
     val DEFAULT = "DEFAULT"
 
-    val values = IndexedSeq(DEFAULT)
+    val values = js.Object.freeze(js.Array(DEFAULT))
   }
 
   object BackupStateEnum {
@@ -149,7 +149,7 @@ package cloudhsmv2 {
     val DELETED            = "DELETED"
     val PENDING_DELETION   = "PENDING_DELETION"
 
-    val values = IndexedSeq(CREATE_IN_PROGRESS, READY, DELETED, PENDING_DELETION)
+    val values = js.Object.freeze(js.Array(CREATE_IN_PROGRESS, READY, DELETED, PENDING_DELETION))
   }
 
   /**
@@ -249,16 +249,18 @@ package cloudhsmv2 {
     val DELETED                = "DELETED"
     val DEGRADED               = "DEGRADED"
 
-    val values = IndexedSeq(
-      CREATE_IN_PROGRESS,
-      UNINITIALIZED,
-      INITIALIZE_IN_PROGRESS,
-      INITIALIZED,
-      ACTIVE,
-      UPDATE_IN_PROGRESS,
-      DELETE_IN_PROGRESS,
-      DELETED,
-      DEGRADED
+    val values = js.Object.freeze(
+      js.Array(
+        CREATE_IN_PROGRESS,
+        UNINITIALIZED,
+        INITIALIZE_IN_PROGRESS,
+        INITIALIZED,
+        ACTIVE,
+        UPDATE_IN_PROGRESS,
+        DELETE_IN_PROGRESS,
+        DELETED,
+        DEGRADED
+      )
     )
   }
 
@@ -631,7 +633,7 @@ package cloudhsmv2 {
     val DELETE_IN_PROGRESS = "DELETE_IN_PROGRESS"
     val DELETED            = "DELETED"
 
-    val values = IndexedSeq(CREATE_IN_PROGRESS, ACTIVE, DEGRADED, DELETE_IN_PROGRESS, DELETED)
+    val values = js.Object.freeze(js.Array(CREATE_IN_PROGRESS, ACTIVE, DEGRADED, DELETE_IN_PROGRESS, DELETED))
   }
 
   @js.native
diff --git a/services/cloudsearch/src/main/scala/facade/amazonaws/services/CloudSearch.scala b/services/cloudsearch/src/main/scala/facade/amazonaws/services/CloudSearch.scala
index 9d2cbb545..ea3455b08 100644
--- a/services/cloudsearch/src/main/scala/facade/amazonaws/services/CloudSearch.scala
+++ b/services/cloudsearch/src/main/scala/facade/amazonaws/services/CloudSearch.scala
@@ -178,7 +178,7 @@ package cloudsearch {
     val light   = "light"
     val full    = "full"
 
-    val values = IndexedSeq(none, minimal, light, full)
+    val values = js.Object.freeze(js.Array(none, minimal, light, full))
   }
 
   /**
@@ -279,42 +279,44 @@ package cloudsearch {
     val `zh-Hans` = "zh-Hans"
     val `zh-Hant` = "zh-Hant"
 
-    val values = IndexedSeq(
-      ar,
-      bg,
-      ca,
-      cs,
-      da,
-      de,
-      el,
-      en,
-      es,
-      eu,
-      fa,
-      fi,
-      fr,
-      ga,
-      gl,
-      he,
-      hi,
-      hu,
-      hy,
-      id,
-      it,
-      ja,
-      ko,
-      lv,
-      mul,
-      nl,
-      no,
-      pt,
-      ro,
-      ru,
-      sv,
-      th,
-      tr,
-      `zh-Hans`,
-      `zh-Hant`
+    val values = js.Object.freeze(
+      js.Array(
+        ar,
+        bg,
+        ca,
+        cs,
+        da,
+        de,
+        el,
+        en,
+        es,
+        eu,
+        fa,
+        fi,
+        fr,
+        ga,
+        gl,
+        he,
+        hi,
+        hu,
+        hy,
+        id,
+        it,
+        ja,
+        ko,
+        lv,
+        mul,
+        nl,
+        no,
+        pt,
+        ro,
+        ru,
+        sv,
+        th,
+        tr,
+        `zh-Hans`,
+        `zh-Hant`
+      )
     )
   }
 
@@ -1570,18 +1572,20 @@ package cloudsearch {
     val `text-array`    = "text-array"
     val `date-array`    = "date-array"
 
-    val values = IndexedSeq(
-      int,
-      double,
-      literal,
-      text,
-      date,
-      latlon,
-      `int-array`,
-      `double-array`,
-      `literal-array`,
-      `text-array`,
-      `date-array`
+    val values = js.Object.freeze(
+      js.Array(
+        int,
+        double,
+        literal,
+        text,
+        date,
+        latlon,
+        `int-array`,
+        `double-array`,
+        `literal-array`,
+        `text-array`,
+        `date-array`
+      )
     )
   }
 
@@ -1813,7 +1817,7 @@ package cloudsearch {
     val Active                 = "Active"
     val FailedToValidate       = "FailedToValidate"
 
-    val values = IndexedSeq(RequiresIndexDocuments, Processing, Active, FailedToValidate)
+    val values = js.Object.freeze(js.Array(RequiresIndexDocuments, Processing, Active, FailedToValidate))
   }
 
   /**
@@ -1861,15 +1865,17 @@ package cloudsearch {
     val `search.m3.xlarge`  = "search.m3.xlarge"
     val `search.m3.2xlarge` = "search.m3.2xlarge"
 
-    val values = IndexedSeq(
-      `search.m1.small`,
-      `search.m1.large`,
-      `search.m2.xlarge`,
-      `search.m2.2xlarge`,
-      `search.m3.medium`,
-      `search.m3.large`,
-      `search.m3.xlarge`,
-      `search.m3.2xlarge`
+    val values = js.Object.freeze(
+      js.Array(
+        `search.m1.small`,
+        `search.m1.large`,
+        `search.m2.xlarge`,
+        `search.m2.2xlarge`,
+        `search.m3.medium`,
+        `search.m3.large`,
+        `search.m3.xlarge`,
+        `search.m3.2xlarge`
+      )
     )
   }
 
@@ -1972,7 +1978,7 @@ package cloudsearch {
     val low  = "low"
     val high = "high"
 
-    val values = IndexedSeq(none, low, high)
+    val values = js.Object.freeze(js.Array(none, low, high))
   }
 
   /**
diff --git a/services/cloudsearchdomain/src/main/scala/facade/amazonaws/services/CloudSearchDomain.scala b/services/cloudsearchdomain/src/main/scala/facade/amazonaws/services/CloudSearchDomain.scala
index 8d49c7431..38745e42a 100644
--- a/services/cloudsearchdomain/src/main/scala/facade/amazonaws/services/CloudSearchDomain.scala
+++ b/services/cloudsearchdomain/src/main/scala/facade/amazonaws/services/CloudSearchDomain.scala
@@ -102,7 +102,7 @@ package cloudsearchdomain {
     val `application/json` = "application/json"
     val `application/xml`  = "application/xml"
 
-    val values = IndexedSeq(`application/json`, `application/xml`)
+    val values = js.Object.freeze(js.Array(`application/json`, `application/xml`))
   }
 
   /**
@@ -231,7 +231,7 @@ package cloudsearchdomain {
     val lucene     = "lucene"
     val dismax     = "dismax"
 
-    val values = IndexedSeq(simple, structured, lucene, dismax)
+    val values = js.Object.freeze(js.Array(simple, structured, lucene, dismax))
   }
 
   /**
diff --git a/services/cloudtrail/src/main/scala/facade/amazonaws/services/CloudTrail.scala b/services/cloudtrail/src/main/scala/facade/amazonaws/services/CloudTrail.scala
index 1f06ab7c4..2322e9e36 100644
--- a/services/cloudtrail/src/main/scala/facade/amazonaws/services/CloudTrail.scala
+++ b/services/cloudtrail/src/main/scala/facade/amazonaws/services/CloudTrail.scala
@@ -650,8 +650,9 @@ package cloudtrail {
     val EventSource  = "EventSource"
     val AccessKeyId  = "AccessKeyId"
 
-    val values =
-      IndexedSeq(EventId, EventName, ReadOnly, Username, ResourceType, ResourceName, EventSource, AccessKeyId)
+    val values = js.Object.freeze(
+      js.Array(EventId, EventName, ReadOnly, Username, ResourceType, ResourceName, EventSource, AccessKeyId)
+    )
   }
 
   /**
@@ -775,7 +776,7 @@ package cloudtrail {
     val WriteOnly = "WriteOnly"
     val All       = "All"
 
-    val values = IndexedSeq(ReadOnly, WriteOnly, All)
+    val values = js.Object.freeze(js.Array(ReadOnly, WriteOnly, All))
   }
 
   /**
diff --git a/services/cloudwatch/src/main/scala/facade/amazonaws/services/CloudWatch.scala b/services/cloudwatch/src/main/scala/facade/amazonaws/services/CloudWatch.scala
index 27b5e38ef..285632ace 100644
--- a/services/cloudwatch/src/main/scala/facade/amazonaws/services/CloudWatch.scala
+++ b/services/cloudwatch/src/main/scala/facade/amazonaws/services/CloudWatch.scala
@@ -267,14 +267,16 @@ package cloudwatch {
     val LessThanLowerThreshold                   = "LessThanLowerThreshold"
     val GreaterThanUpperThreshold                = "GreaterThanUpperThreshold"
 
-    val values = IndexedSeq(
-      GreaterThanOrEqualToThreshold,
-      GreaterThanThreshold,
-      LessThanThreshold,
-      LessThanOrEqualToThreshold,
-      LessThanLowerOrGreaterThanUpperThreshold,
-      LessThanLowerThreshold,
-      GreaterThanUpperThreshold
+    val values = js.Object.freeze(
+      js.Array(
+        GreaterThanOrEqualToThreshold,
+        GreaterThanThreshold,
+        LessThanThreshold,
+        LessThanOrEqualToThreshold,
+        LessThanLowerOrGreaterThanUpperThreshold,
+        LessThanLowerThreshold,
+        GreaterThanUpperThreshold
+      )
     )
   }
 
@@ -910,7 +912,7 @@ package cloudwatch {
     val StateUpdate         = "StateUpdate"
     val Action              = "Action"
 
-    val values = IndexedSeq(ConfigurationUpdate, StateUpdate, Action)
+    val values = js.Object.freeze(js.Array(ConfigurationUpdate, StateUpdate, Action))
   }
 
   @js.native
@@ -1515,7 +1517,7 @@ package cloudwatch {
     val TimestampDescending = "TimestampDescending"
     val TimestampAscending  = "TimestampAscending"
 
-    val values = IndexedSeq(TimestampDescending, TimestampAscending)
+    val values = js.Object.freeze(js.Array(TimestampDescending, TimestampAscending))
   }
 
   @js.native
@@ -1573,34 +1575,36 @@ package cloudwatch {
     val `Count/Second`     = "Count/Second"
     val None               = "None"
 
-    val values = IndexedSeq(
-      Seconds,
-      Microseconds,
-      Milliseconds,
-      Bytes,
-      Kilobytes,
-      Megabytes,
-      Gigabytes,
-      Terabytes,
-      Bits,
-      Kilobits,
-      Megabits,
-      Gigabits,
-      Terabits,
-      Percent,
-      Count,
-      `Bytes/Second`,
-      `Kilobytes/Second`,
-      `Megabytes/Second`,
-      `Gigabytes/Second`,
-      `Terabytes/Second`,
-      `Bits/Second`,
-      `Kilobits/Second`,
-      `Megabits/Second`,
-      `Gigabits/Second`,
-      `Terabits/Second`,
-      `Count/Second`,
-      None
+    val values = js.Object.freeze(
+      js.Array(
+        Seconds,
+        Microseconds,
+        Milliseconds,
+        Bytes,
+        Kilobytes,
+        Megabytes,
+        Gigabytes,
+        Terabytes,
+        Bits,
+        Kilobits,
+        Megabits,
+        Gigabits,
+        Terabits,
+        Percent,
+        Count,
+        `Bytes/Second`,
+        `Kilobytes/Second`,
+        `Megabytes/Second`,
+        `Gigabytes/Second`,
+        `Terabytes/Second`,
+        `Bits/Second`,
+        `Kilobits/Second`,
+        `Megabits/Second`,
+        `Gigabits/Second`,
+        `Terabits/Second`,
+        `Count/Second`,
+        None
+      )
     )
   }
 
@@ -1609,7 +1613,7 @@ package cloudwatch {
     val ALARM             = "ALARM"
     val INSUFFICIENT_DATA = "INSUFFICIENT_DATA"
 
-    val values = IndexedSeq(OK, ALARM, INSUFFICIENT_DATA)
+    val values = js.Object.freeze(js.Array(OK, ALARM, INSUFFICIENT_DATA))
   }
 
   object StatisticEnum {
@@ -1619,7 +1623,7 @@ package cloudwatch {
     val Minimum     = "Minimum"
     val Maximum     = "Maximum"
 
-    val values = IndexedSeq(SampleCount, Average, Sum, Minimum, Maximum)
+    val values = js.Object.freeze(js.Array(SampleCount, Average, Sum, Minimum, Maximum))
   }
 
   /**
@@ -1656,7 +1660,7 @@ package cloudwatch {
     val InternalError = "InternalError"
     val PartialData   = "PartialData"
 
-    val values = IndexedSeq(Complete, InternalError, PartialData)
+    val values = js.Object.freeze(js.Array(Complete, InternalError, PartialData))
   }
 
   /**
diff --git a/services/cloudwatchevents/src/main/scala/facade/amazonaws/services/CloudWatchEvents.scala b/services/cloudwatchevents/src/main/scala/facade/amazonaws/services/CloudWatchEvents.scala
index e4777c9cf..84a021fa8 100644
--- a/services/cloudwatchevents/src/main/scala/facade/amazonaws/services/CloudWatchEvents.scala
+++ b/services/cloudwatchevents/src/main/scala/facade/amazonaws/services/CloudWatchEvents.scala
@@ -204,7 +204,7 @@ package cloudwatchevents {
     val ENABLED  = "ENABLED"
     val DISABLED = "DISABLED"
 
-    val values = IndexedSeq(ENABLED, DISABLED)
+    val values = js.Object.freeze(js.Array(ENABLED, DISABLED))
   }
 
   /**
@@ -786,7 +786,7 @@ package cloudwatchevents {
     val ACTIVE  = "ACTIVE"
     val DELETED = "DELETED"
 
-    val values = IndexedSeq(PENDING, ACTIVE, DELETED)
+    val values = js.Object.freeze(js.Array(PENDING, ACTIVE, DELETED))
   }
 
   /**
@@ -836,7 +836,7 @@ package cloudwatchevents {
     val EC2     = "EC2"
     val FARGATE = "FARGATE"
 
-    val values = IndexedSeq(EC2, FARGATE)
+    val values = js.Object.freeze(js.Array(EC2, FARGATE))
   }
 
   @js.native
@@ -1689,7 +1689,7 @@ package cloudwatchevents {
     val ENABLED  = "ENABLED"
     val DISABLED = "DISABLED"
 
-    val values = IndexedSeq(ENABLED, DISABLED)
+    val values = js.Object.freeze(js.Array(ENABLED, DISABLED))
   }
 
   /**
diff --git a/services/cloudwatchlogs/src/main/scala/facade/amazonaws/services/CloudWatchLogs.scala b/services/cloudwatchlogs/src/main/scala/facade/amazonaws/services/CloudWatchLogs.scala
index 8a48958b8..87a308b7a 100644
--- a/services/cloudwatchlogs/src/main/scala/facade/amazonaws/services/CloudWatchLogs.scala
+++ b/services/cloudwatchlogs/src/main/scala/facade/amazonaws/services/CloudWatchLogs.scala
@@ -874,7 +874,7 @@ package cloudwatchlogs {
     val Random      = "Random"
     val ByLogStream = "ByLogStream"
 
-    val values = IndexedSeq(Random, ByLogStream)
+    val values = js.Object.freeze(js.Array(Random, ByLogStream))
   }
 
   /**
@@ -969,7 +969,7 @@ package cloudwatchlogs {
     val PENDING_CANCEL = "PENDING_CANCEL"
     val RUNNING        = "RUNNING"
 
-    val values = IndexedSeq(CANCELLED, COMPLETED, FAILED, PENDING, PENDING_CANCEL, RUNNING)
+    val values = js.Object.freeze(js.Array(CANCELLED, COMPLETED, FAILED, PENDING, PENDING_CANCEL, RUNNING))
   }
 
   @js.native
@@ -1463,7 +1463,7 @@ package cloudwatchlogs {
     val LogStreamName = "LogStreamName"
     val LastEventTime = "LastEventTime"
 
-    val values = IndexedSeq(LogStreamName, LastEventTime)
+    val values = js.Object.freeze(js.Array(LogStreamName, LastEventTime))
   }
 
   /**
@@ -1764,7 +1764,7 @@ package cloudwatchlogs {
     val Failed    = "Failed"
     val Cancelled = "Cancelled"
 
-    val values = IndexedSeq(Scheduled, Running, Complete, Failed, Cancelled)
+    val values = js.Object.freeze(js.Array(Scheduled, Running, Complete, Failed, Cancelled))
   }
 
   /**
diff --git a/services/codebuild/src/main/scala/facade/amazonaws/services/CodeBuild.scala b/services/codebuild/src/main/scala/facade/amazonaws/services/CodeBuild.scala
index 1f7b800cd..e9db56126 100644
--- a/services/codebuild/src/main/scala/facade/amazonaws/services/CodeBuild.scala
+++ b/services/codebuild/src/main/scala/facade/amazonaws/services/CodeBuild.scala
@@ -144,14 +144,14 @@ package codebuild {
     val NONE     = "NONE"
     val BUILD_ID = "BUILD_ID"
 
-    val values = IndexedSeq(NONE, BUILD_ID)
+    val values = js.Object.freeze(js.Array(NONE, BUILD_ID))
   }
 
   object ArtifactPackagingEnum {
     val NONE = "NONE"
     val ZIP  = "ZIP"
 
-    val values = IndexedSeq(NONE, ZIP)
+    val values = js.Object.freeze(js.Array(NONE, ZIP))
   }
 
   object ArtifactsTypeEnum {
@@ -159,7 +159,7 @@ package codebuild {
     val S3           = "S3"
     val NO_ARTIFACTS = "NO_ARTIFACTS"
 
-    val values = IndexedSeq(CODEPIPELINE, S3, NO_ARTIFACTS)
+    val values = js.Object.freeze(js.Array(CODEPIPELINE, S3, NO_ARTIFACTS))
   }
 
   object AuthTypeEnum {
@@ -167,7 +167,7 @@ package codebuild {
     val BASIC_AUTH            = "BASIC_AUTH"
     val PERSONAL_ACCESS_TOKEN = "PERSONAL_ACCESS_TOKEN"
 
-    val values = IndexedSeq(OAUTH, BASIC_AUTH, PERSONAL_ACCESS_TOKEN)
+    val values = js.Object.freeze(js.Array(OAUTH, BASIC_AUTH, PERSONAL_ACCESS_TOKEN))
   }
 
   @js.native
@@ -468,18 +468,20 @@ package codebuild {
     val FINALIZING       = "FINALIZING"
     val COMPLETED        = "COMPLETED"
 
-    val values = IndexedSeq(
-      SUBMITTED,
-      QUEUED,
-      PROVISIONING,
-      DOWNLOAD_SOURCE,
-      INSTALL,
-      PRE_BUILD,
-      BUILD,
-      POST_BUILD,
-      UPLOAD_ARTIFACTS,
-      FINALIZING,
-      COMPLETED
+    val values = js.Object.freeze(
+      js.Array(
+        SUBMITTED,
+        QUEUED,
+        PROVISIONING,
+        DOWNLOAD_SOURCE,
+        INSTALL,
+        PRE_BUILD,
+        BUILD,
+        POST_BUILD,
+        UPLOAD_ARTIFACTS,
+        FINALIZING,
+        COMPLETED
+      )
     )
   }
 
@@ -488,7 +490,7 @@ package codebuild {
     val LOCAL_SOURCE_CACHE       = "LOCAL_SOURCE_CACHE"
     val LOCAL_CUSTOM_CACHE       = "LOCAL_CUSTOM_CACHE"
 
-    val values = IndexedSeq(LOCAL_DOCKER_LAYER_CACHE, LOCAL_SOURCE_CACHE, LOCAL_CUSTOM_CACHE)
+    val values = js.Object.freeze(js.Array(LOCAL_DOCKER_LAYER_CACHE, LOCAL_SOURCE_CACHE, LOCAL_CUSTOM_CACHE))
   }
 
   object CacheTypeEnum {
@@ -496,7 +498,7 @@ package codebuild {
     val S3       = "S3"
     val LOCAL    = "LOCAL"
 
-    val values = IndexedSeq(NO_CACHE, S3, LOCAL)
+    val values = js.Object.freeze(js.Array(NO_CACHE, S3, LOCAL))
   }
 
   /**
@@ -530,7 +532,7 @@ package codebuild {
     val BUILD_GENERAL1_MEDIUM = "BUILD_GENERAL1_MEDIUM"
     val BUILD_GENERAL1_LARGE  = "BUILD_GENERAL1_LARGE"
 
-    val values = IndexedSeq(BUILD_GENERAL1_SMALL, BUILD_GENERAL1_MEDIUM, BUILD_GENERAL1_LARGE)
+    val values = js.Object.freeze(js.Array(BUILD_GENERAL1_SMALL, BUILD_GENERAL1_MEDIUM, BUILD_GENERAL1_LARGE))
   }
 
   @js.native
@@ -657,7 +659,7 @@ package codebuild {
   object CredentialProviderTypeEnum {
     val SECRETS_MANAGER = "SECRETS_MANAGER"
 
-    val values = IndexedSeq(SECRETS_MANAGER)
+    val values = js.Object.freeze(js.Array(SECRETS_MANAGER))
   }
 
   @js.native
@@ -820,7 +822,7 @@ package codebuild {
     val WINDOWS_CONTAINER = "WINDOWS_CONTAINER"
     val LINUX_CONTAINER   = "LINUX_CONTAINER"
 
-    val values = IndexedSeq(WINDOWS_CONTAINER, LINUX_CONTAINER)
+    val values = js.Object.freeze(js.Array(WINDOWS_CONTAINER, LINUX_CONTAINER))
   }
 
   /**
@@ -853,7 +855,7 @@ package codebuild {
     val PLAINTEXT       = "PLAINTEXT"
     val PARAMETER_STORE = "PARAMETER_STORE"
 
-    val values = IndexedSeq(PLAINTEXT, PARAMETER_STORE)
+    val values = js.Object.freeze(js.Array(PLAINTEXT, PARAMETER_STORE))
   }
 
   /**
@@ -880,7 +882,7 @@ package codebuild {
     val CODEBUILD    = "CODEBUILD"
     val SERVICE_ROLE = "SERVICE_ROLE"
 
-    val values = IndexedSeq(CODEBUILD, SERVICE_ROLE)
+    val values = js.Object.freeze(js.Array(CODEBUILD, SERVICE_ROLE))
   }
 
   @js.native
@@ -968,7 +970,7 @@ package codebuild {
     val BASE    = "BASE"
     val PHP     = "PHP"
 
-    val values = IndexedSeq(JAVA, PYTHON, NODE_JS, RUBY, GOLANG, DOCKER, ANDROID, DOTNET, BASE, PHP)
+    val values = js.Object.freeze(js.Array(JAVA, PYTHON, NODE_JS, RUBY, GOLANG, DOCKER, ANDROID, DOTNET, BASE, PHP))
   }
 
   @js.native
@@ -1166,7 +1168,7 @@ package codebuild {
     val ENABLED  = "ENABLED"
     val DISABLED = "DISABLED"
 
-    val values = IndexedSeq(ENABLED, DISABLED)
+    val values = js.Object.freeze(js.Array(ENABLED, DISABLED))
   }
 
   /**
@@ -1250,7 +1252,7 @@ package codebuild {
     val UBUNTU         = "UBUNTU"
     val WINDOWS_SERVER = "WINDOWS_SERVER"
 
-    val values = IndexedSeq(DEBIAN, AMAZON_LINUX, UBUNTU, WINDOWS_SERVER)
+    val values = js.Object.freeze(js.Array(DEBIAN, AMAZON_LINUX, UBUNTU, WINDOWS_SERVER))
   }
 
   /**
@@ -1471,7 +1473,7 @@ package codebuild {
     val CREATED_TIME       = "CREATED_TIME"
     val LAST_MODIFIED_TIME = "LAST_MODIFIED_TIME"
 
-    val values = IndexedSeq(NAME, CREATED_TIME, LAST_MODIFIED_TIME)
+    val values = js.Object.freeze(js.Array(NAME, CREATED_TIME, LAST_MODIFIED_TIME))
   }
 
   /**
@@ -1598,14 +1600,14 @@ package codebuild {
     val BITBUCKET         = "BITBUCKET"
     val GITHUB_ENTERPRISE = "GITHUB_ENTERPRISE"
 
-    val values = IndexedSeq(GITHUB, BITBUCKET, GITHUB_ENTERPRISE)
+    val values = js.Object.freeze(js.Array(GITHUB, BITBUCKET, GITHUB_ENTERPRISE))
   }
 
   object SortOrderTypeEnum {
     val ASCENDING  = "ASCENDING"
     val DESCENDING = "DESCENDING"
 
-    val values = IndexedSeq(ASCENDING, DESCENDING)
+    val values = js.Object.freeze(js.Array(ASCENDING, DESCENDING))
   }
 
   /**
@@ -1635,7 +1637,7 @@ package codebuild {
   object SourceAuthTypeEnum {
     val OAUTH = "OAUTH"
 
-    val values = IndexedSeq(OAUTH)
+    val values = js.Object.freeze(js.Array(OAUTH))
   }
 
   /**
@@ -1671,7 +1673,8 @@ package codebuild {
     val GITHUB_ENTERPRISE = "GITHUB_ENTERPRISE"
     val NO_SOURCE         = "NO_SOURCE"
 
-    val values = IndexedSeq(CODECOMMIT, CODEPIPELINE, GITHUB, S3, BITBUCKET, GITHUB_ENTERPRISE, NO_SOURCE)
+    val values =
+      js.Object.freeze(js.Array(CODECOMMIT, CODEPIPELINE, GITHUB, S3, BITBUCKET, GITHUB_ENTERPRISE, NO_SOURCE))
   }
 
   @js.native
@@ -1803,7 +1806,7 @@ package codebuild {
     val IN_PROGRESS = "IN_PROGRESS"
     val STOPPED     = "STOPPED"
 
-    val values = IndexedSeq(SUCCEEDED, FAILED, FAULT, TIMED_OUT, IN_PROGRESS, STOPPED)
+    val values = js.Object.freeze(js.Array(SUCCEEDED, FAILED, FAULT, TIMED_OUT, IN_PROGRESS, STOPPED))
   }
 
   @js.native
@@ -2074,6 +2077,6 @@ package codebuild {
     val ACTOR_ACCOUNT_ID = "ACTOR_ACCOUNT_ID"
     val FILE_PATH        = "FILE_PATH"
 
-    val values = IndexedSeq(EVENT, BASE_REF, HEAD_REF, ACTOR_ACCOUNT_ID, FILE_PATH)
+    val values = js.Object.freeze(js.Array(EVENT, BASE_REF, HEAD_REF, ACTOR_ACCOUNT_ID, FILE_PATH))
   }
 }
diff --git a/services/codecommit/src/main/scala/facade/amazonaws/services/CodeCommit.scala b/services/codecommit/src/main/scala/facade/amazonaws/services/CodeCommit.scala
index bd530e60c..18ef44323 100644
--- a/services/codecommit/src/main/scala/facade/amazonaws/services/CodeCommit.scala
+++ b/services/codecommit/src/main/scala/facade/amazonaws/services/CodeCommit.scala
@@ -573,7 +573,7 @@ package codecommit {
     val M = "M"
     val D = "D"
 
-    val values = IndexedSeq(A, M, D)
+    val values = js.Object.freeze(js.Array(A, M, D))
   }
 
   /**
@@ -751,7 +751,7 @@ package codecommit {
     val FILE_LEVEL = "FILE_LEVEL"
     val LINE_LEVEL = "LINE_LEVEL"
 
-    val values = IndexedSeq(FILE_LEVEL, LINE_LEVEL)
+    val values = js.Object.freeze(js.Array(FILE_LEVEL, LINE_LEVEL))
   }
 
   /**
@@ -829,7 +829,7 @@ package codecommit {
     val ACCEPT_DESTINATION = "ACCEPT_DESTINATION"
     val AUTOMERGE          = "AUTOMERGE"
 
-    val values = IndexedSeq(NONE, ACCEPT_SOURCE, ACCEPT_DESTINATION, AUTOMERGE)
+    val values = js.Object.freeze(js.Array(NONE, ACCEPT_SOURCE, ACCEPT_DESTINATION, AUTOMERGE))
   }
 
   /**
@@ -1478,7 +1478,7 @@ package codecommit {
     val NORMAL     = "NORMAL"
     val SYMLINK    = "SYMLINK"
 
-    val values = IndexedSeq(EXECUTABLE, NORMAL, SYMLINK)
+    val values = js.Object.freeze(js.Array(EXECUTABLE, NORMAL, SYMLINK))
   }
 
   /**
@@ -2768,7 +2768,7 @@ package codecommit {
     val SQUASH_MERGE       = "SQUASH_MERGE"
     val THREE_WAY_MERGE    = "THREE_WAY_MERGE"
 
-    val values = IndexedSeq(FAST_FORWARD_MERGE, SQUASH_MERGE, THREE_WAY_MERGE)
+    val values = js.Object.freeze(js.Array(FAST_FORWARD_MERGE, SQUASH_MERGE, THREE_WAY_MERGE))
   }
 
   @js.native
@@ -2933,7 +2933,7 @@ package codecommit {
     val GIT_LINK      = "GIT_LINK"
     val SYMBOLIC_LINK = "SYMBOLIC_LINK"
 
-    val values = IndexedSeq(FILE, DIRECTORY, GIT_LINK, SYMBOLIC_LINK)
+    val values = js.Object.freeze(js.Array(FILE, DIRECTORY, GIT_LINK, SYMBOLIC_LINK))
   }
 
   /**
@@ -2964,7 +2964,7 @@ package codecommit {
     val ascending  = "ascending"
     val descending = "descending"
 
-    val values = IndexedSeq(ascending, descending)
+    val values = js.Object.freeze(js.Array(ascending, descending))
   }
 
   @js.native
@@ -3265,11 +3265,13 @@ package codecommit {
     val PULL_REQUEST_SOURCE_REFERENCE_UPDATED = "PULL_REQUEST_SOURCE_REFERENCE_UPDATED"
     val PULL_REQUEST_MERGE_STATE_CHANGED      = "PULL_REQUEST_MERGE_STATE_CHANGED"
 
-    val values = IndexedSeq(
-      PULL_REQUEST_CREATED,
-      PULL_REQUEST_STATUS_CHANGED,
-      PULL_REQUEST_SOURCE_REFERENCE_UPDATED,
-      PULL_REQUEST_MERGE_STATE_CHANGED
+    val values = js.Object.freeze(
+      js.Array(
+        PULL_REQUEST_CREATED,
+        PULL_REQUEST_STATUS_CHANGED,
+        PULL_REQUEST_SOURCE_REFERENCE_UPDATED,
+        PULL_REQUEST_MERGE_STATE_CHANGED
+      )
     )
   }
 
@@ -3346,7 +3348,7 @@ package codecommit {
     val OPEN   = "OPEN"
     val CLOSED = "CLOSED"
 
-    val values = IndexedSeq(OPEN, CLOSED)
+    val values = js.Object.freeze(js.Array(OPEN, CLOSED))
   }
 
   /**
@@ -3523,7 +3525,7 @@ package codecommit {
     val BEFORE = "BEFORE"
     val AFTER  = "AFTER"
 
-    val values = IndexedSeq(BEFORE, AFTER)
+    val values = js.Object.freeze(js.Array(BEFORE, AFTER))
   }
 
   /**
@@ -3561,7 +3563,7 @@ package codecommit {
     val KEEP_DESTINATION = "KEEP_DESTINATION"
     val USE_NEW_CONTENT  = "USE_NEW_CONTENT"
 
-    val values = IndexedSeq(KEEP_BASE, KEEP_SOURCE, KEEP_DESTINATION, USE_NEW_CONTENT)
+    val values = js.Object.freeze(js.Array(KEEP_BASE, KEEP_SOURCE, KEEP_DESTINATION, USE_NEW_CONTENT))
   }
 
   /**
@@ -3668,7 +3670,7 @@ package codecommit {
     val createReference = "createReference"
     val deleteReference = "deleteReference"
 
-    val values = IndexedSeq(all, updateReference, createReference, deleteReference)
+    val values = js.Object.freeze(js.Array(all, updateReference, createReference, deleteReference))
   }
 
   /**
@@ -3719,7 +3721,7 @@ package codecommit {
     val repositoryName   = "repositoryName"
     val lastModifiedDate = "lastModifiedDate"
 
-    val values = IndexedSeq(repositoryName, lastModifiedDate)
+    val values = js.Object.freeze(js.Array(repositoryName, lastModifiedDate))
   }
 
   /**
diff --git a/services/codedeploy/src/main/scala/facade/amazonaws/services/CodeDeploy.scala b/services/codedeploy/src/main/scala/facade/amazonaws/services/CodeDeploy.scala
index ecd389619..e57c62b25 100644
--- a/services/codedeploy/src/main/scala/facade/amazonaws/services/CodeDeploy.scala
+++ b/services/codedeploy/src/main/scala/facade/amazonaws/services/CodeDeploy.scala
@@ -442,7 +442,7 @@ package codedeploy {
     val firstUsedTime = "firstUsedTime"
     val lastUsedTime  = "lastUsedTime"
 
-    val values = IndexedSeq(registerTime, firstUsedTime, lastUsedTime)
+    val values = js.Object.freeze(js.Array(registerTime, firstUsedTime, lastUsedTime))
   }
 
   /**
@@ -471,7 +471,7 @@ package codedeploy {
     val DEPLOYMENT_STOP_ON_ALARM   = "DEPLOYMENT_STOP_ON_ALARM"
     val DEPLOYMENT_STOP_ON_REQUEST = "DEPLOYMENT_STOP_ON_REQUEST"
 
-    val values = IndexedSeq(DEPLOYMENT_FAILURE, DEPLOYMENT_STOP_ON_ALARM, DEPLOYMENT_STOP_ON_REQUEST)
+    val values = js.Object.freeze(js.Array(DEPLOYMENT_FAILURE, DEPLOYMENT_STOP_ON_ALARM, DEPLOYMENT_STOP_ON_REQUEST))
   }
 
   /**
@@ -835,7 +835,7 @@ package codedeploy {
     val YAML = "YAML"
     val JSON = "JSON"
 
-    val values = IndexedSeq(tar, tgz, zip, YAML, JSON)
+    val values = js.Object.freeze(js.Array(tar, tgz, zip, YAML, JSON))
   }
 
   object ComputePlatformEnum {
@@ -843,7 +843,7 @@ package codedeploy {
     val Lambda = "Lambda"
     val ECS    = "ECS"
 
-    val values = IndexedSeq(Server, Lambda, ECS)
+    val values = js.Object.freeze(js.Array(Server, Lambda, ECS))
   }
 
   @js.native
@@ -1267,7 +1267,7 @@ package codedeploy {
     val autoscaling        = "autoscaling"
     val codeDeployRollback = "codeDeployRollback"
 
-    val values = IndexedSeq(user, autoscaling, codeDeployRollback)
+    val values = js.Object.freeze(js.Array(user, autoscaling, codeDeployRollback))
   }
 
   /**
@@ -1460,7 +1460,7 @@ package codedeploy {
     val WITH_TRAFFIC_CONTROL    = "WITH_TRAFFIC_CONTROL"
     val WITHOUT_TRAFFIC_CONTROL = "WITHOUT_TRAFFIC_CONTROL"
 
-    val values = IndexedSeq(WITH_TRAFFIC_CONTROL, WITHOUT_TRAFFIC_CONTROL)
+    val values = js.Object.freeze(js.Array(WITH_TRAFFIC_CONTROL, WITHOUT_TRAFFIC_CONTROL))
   }
 
   /**
@@ -1500,7 +1500,7 @@ package codedeploy {
     val CONTINUE_DEPLOYMENT = "CONTINUE_DEPLOYMENT"
     val STOP_DEPLOYMENT     = "STOP_DEPLOYMENT"
 
-    val values = IndexedSeq(CONTINUE_DEPLOYMENT, STOP_DEPLOYMENT)
+    val values = js.Object.freeze(js.Array(CONTINUE_DEPLOYMENT, STOP_DEPLOYMENT))
   }
 
   /**
@@ -1533,7 +1533,7 @@ package codedeploy {
     val Stopped    = "Stopped"
     val Ready      = "Ready"
 
-    val values = IndexedSeq(Created, Queued, InProgress, Succeeded, Failed, Stopped, Ready)
+    val values = js.Object.freeze(js.Array(Created, Queued, InProgress, Succeeded, Failed, Stopped, Ready))
   }
 
   /**
@@ -1589,21 +1589,21 @@ package codedeploy {
     val LambdaTarget   = "LambdaTarget"
     val ECSTarget      = "ECSTarget"
 
-    val values = IndexedSeq(InstanceTarget, LambdaTarget, ECSTarget)
+    val values = js.Object.freeze(js.Array(InstanceTarget, LambdaTarget, ECSTarget))
   }
 
   object DeploymentTypeEnum {
     val IN_PLACE   = "IN_PLACE"
     val BLUE_GREEN = "BLUE_GREEN"
 
-    val values = IndexedSeq(IN_PLACE, BLUE_GREEN)
+    val values = js.Object.freeze(js.Array(IN_PLACE, BLUE_GREEN))
   }
 
   object DeploymentWaitTypeEnum {
     val READY_WAIT       = "READY_WAIT"
     val TERMINATION_WAIT = "TERMINATION_WAIT"
 
-    val values = IndexedSeq(READY_WAIT, TERMINATION_WAIT)
+    val values = js.Object.freeze(js.Array(READY_WAIT, TERMINATION_WAIT))
   }
 
   /**
@@ -1682,7 +1682,7 @@ package codedeploy {
     val VALUE_ONLY    = "VALUE_ONLY"
     val KEY_AND_VALUE = "KEY_AND_VALUE"
 
-    val values = IndexedSeq(KEY_ONLY, VALUE_ONLY, KEY_AND_VALUE)
+    val values = js.Object.freeze(js.Array(KEY_ONLY, VALUE_ONLY, KEY_AND_VALUE))
   }
 
   /**
@@ -1852,40 +1852,42 @@ package codedeploy {
     val THROTTLED                                   = "THROTTLED"
     val TIMEOUT                                     = "TIMEOUT"
 
-    val values = IndexedSeq(
-      AGENT_ISSUE,
-      ALARM_ACTIVE,
-      APPLICATION_MISSING,
-      AUTOSCALING_VALIDATION_ERROR,
-      AUTO_SCALING_CONFIGURATION,
-      AUTO_SCALING_IAM_ROLE_PERMISSIONS,
-      CODEDEPLOY_RESOURCE_CANNOT_BE_FOUND,
-      CUSTOMER_APPLICATION_UNHEALTHY,
-      DEPLOYMENT_GROUP_MISSING,
-      ECS_UPDATE_ERROR,
-      ELASTIC_LOAD_BALANCING_INVALID,
-      ELB_INVALID_INSTANCE,
-      HEALTH_CONSTRAINTS,
-      HEALTH_CONSTRAINTS_INVALID,
-      HOOK_EXECUTION_FAILURE,
-      IAM_ROLE_MISSING,
-      IAM_ROLE_PERMISSIONS,
-      INTERNAL_ERROR,
-      INVALID_ECS_SERVICE,
-      INVALID_LAMBDA_CONFIGURATION,
-      INVALID_LAMBDA_FUNCTION,
-      INVALID_REVISION,
-      MANUAL_STOP,
-      MISSING_BLUE_GREEN_DEPLOYMENT_CONFIGURATION,
-      MISSING_ELB_INFORMATION,
-      MISSING_GITHUB_TOKEN,
-      NO_EC2_SUBSCRIPTION,
-      NO_INSTANCES,
-      OVER_MAX_INSTANCES,
-      RESOURCE_LIMIT_EXCEEDED,
-      REVISION_MISSING,
-      THROTTLED,
-      TIMEOUT
+    val values = js.Object.freeze(
+      js.Array(
+        AGENT_ISSUE,
+        ALARM_ACTIVE,
+        APPLICATION_MISSING,
+        AUTOSCALING_VALIDATION_ERROR,
+        AUTO_SCALING_CONFIGURATION,
+        AUTO_SCALING_IAM_ROLE_PERMISSIONS,
+        CODEDEPLOY_RESOURCE_CANNOT_BE_FOUND,
+        CUSTOMER_APPLICATION_UNHEALTHY,
+        DEPLOYMENT_GROUP_MISSING,
+        ECS_UPDATE_ERROR,
+        ELASTIC_LOAD_BALANCING_INVALID,
+        ELB_INVALID_INSTANCE,
+        HEALTH_CONSTRAINTS,
+        HEALTH_CONSTRAINTS_INVALID,
+        HOOK_EXECUTION_FAILURE,
+        IAM_ROLE_MISSING,
+        IAM_ROLE_PERMISSIONS,
+        INTERNAL_ERROR,
+        INVALID_ECS_SERVICE,
+        INVALID_LAMBDA_CONFIGURATION,
+        INVALID_LAMBDA_FUNCTION,
+        INVALID_REVISION,
+        MANUAL_STOP,
+        MISSING_BLUE_GREEN_DEPLOYMENT_CONFIGURATION,
+        MISSING_ELB_INFORMATION,
+        MISSING_GITHUB_TOKEN,
+        NO_EC2_SUBSCRIPTION,
+        NO_INSTANCES,
+        OVER_MAX_INSTANCES,
+        RESOURCE_LIMIT_EXCEEDED,
+        REVISION_MISSING,
+        THROTTLED,
+        TIMEOUT
+      )
     )
   }
 
@@ -1915,7 +1917,7 @@ package codedeploy {
     val OVERWRITE = "OVERWRITE"
     val RETAIN    = "RETAIN"
 
-    val values = IndexedSeq(DISALLOW, OVERWRITE, RETAIN)
+    val values = js.Object.freeze(js.Array(DISALLOW, OVERWRITE, RETAIN))
   }
 
   /**
@@ -2287,7 +2289,7 @@ package codedeploy {
     val DISCOVER_EXISTING       = "DISCOVER_EXISTING"
     val COPY_AUTO_SCALING_GROUP = "COPY_AUTO_SCALING_GROUP"
 
-    val values = IndexedSeq(DISCOVER_EXISTING, COPY_AUTO_SCALING_GROUP)
+    val values = js.Object.freeze(js.Array(DISCOVER_EXISTING, COPY_AUTO_SCALING_GROUP))
   }
 
   /**
@@ -2312,7 +2314,7 @@ package codedeploy {
     val TERMINATE  = "TERMINATE"
     val KEEP_ALIVE = "KEEP_ALIVE"
 
-    val values = IndexedSeq(TERMINATE, KEEP_ALIVE)
+    val values = js.Object.freeze(js.Array(TERMINATE, KEEP_ALIVE))
   }
 
   /**
@@ -2361,7 +2363,7 @@ package codedeploy {
     val Unknown    = "Unknown"
     val Ready      = "Ready"
 
-    val values = IndexedSeq(Pending, InProgress, Succeeded, Failed, Skipped, Unknown, Ready)
+    val values = js.Object.freeze(js.Array(Pending, InProgress, Succeeded, Failed, Skipped, Unknown, Ready))
   }
 
   /**
@@ -2438,7 +2440,7 @@ package codedeploy {
     val Blue  = "Blue"
     val Green = "Green"
 
-    val values = IndexedSeq(Blue, Green)
+    val values = js.Object.freeze(js.Array(Blue, Green))
   }
 
   /**
@@ -2542,7 +2544,9 @@ package codedeploy {
     val ScriptFailed        = "ScriptFailed"
     val UnknownError        = "UnknownError"
 
-    val values = IndexedSeq(Success, ScriptMissing, ScriptNotExecutable, ScriptTimedOut, ScriptFailed, UnknownError)
+    val values = js.Object.freeze(
+      js.Array(Success, ScriptMissing, ScriptNotExecutable, ScriptTimedOut, ScriptFailed, UnknownError)
+    )
   }
 
   /**
@@ -2583,7 +2587,7 @@ package codedeploy {
     val Skipped    = "Skipped"
     val Unknown    = "Unknown"
 
-    val values = IndexedSeq(Pending, InProgress, Succeeded, Failed, Skipped, Unknown)
+    val values = js.Object.freeze(js.Array(Pending, InProgress, Succeeded, Failed, Skipped, Unknown))
   }
 
   /**
@@ -2999,7 +3003,7 @@ package codedeploy {
     val exclude = "exclude"
     val ignore  = "ignore"
 
-    val values = IndexedSeq(include, exclude, ignore)
+    val values = js.Object.freeze(js.Array(include, exclude, ignore))
   }
 
   @js.native
@@ -3089,7 +3093,7 @@ package codedeploy {
     val HOST_COUNT    = "HOST_COUNT"
     val FLEET_PERCENT = "FLEET_PERCENT"
 
-    val values = IndexedSeq(HOST_COUNT, FLEET_PERCENT)
+    val values = js.Object.freeze(js.Array(HOST_COUNT, FLEET_PERCENT))
   }
 
   /**
@@ -3228,7 +3232,7 @@ package codedeploy {
     val Registered   = "Registered"
     val Deregistered = "Deregistered"
 
-    val values = IndexedSeq(Registered, Deregistered)
+    val values = js.Object.freeze(js.Array(Registered, Deregistered))
   }
 
   /**
@@ -3311,7 +3315,7 @@ package codedeploy {
     val String         = "String"
     val AppSpecContent = "AppSpecContent"
 
-    val values = IndexedSeq(S3, GitHub, String, AppSpecContent)
+    val values = js.Object.freeze(js.Array(S3, GitHub, String, AppSpecContent))
   }
 
   /**
@@ -3389,7 +3393,7 @@ package codedeploy {
     val ascending  = "ascending"
     val descending = "descending"
 
-    val values = IndexedSeq(ascending, descending)
+    val values = js.Object.freeze(js.Array(ascending, descending))
   }
 
   /**
@@ -3440,7 +3444,7 @@ package codedeploy {
     val Pending   = "Pending"
     val Succeeded = "Succeeded"
 
-    val values = IndexedSeq(Pending, Succeeded)
+    val values = js.Object.freeze(js.Array(Pending, Succeeded))
   }
 
   /**
@@ -3493,7 +3497,7 @@ package codedeploy {
     val VALUE_ONLY    = "VALUE_ONLY"
     val KEY_AND_VALUE = "KEY_AND_VALUE"
 
-    val values = IndexedSeq(KEY_ONLY, VALUE_ONLY, KEY_AND_VALUE)
+    val values = js.Object.freeze(js.Array(KEY_ONLY, VALUE_ONLY, KEY_AND_VALUE))
   }
 
   @js.native
@@ -3532,7 +3536,7 @@ package codedeploy {
     val TargetStatus        = "TargetStatus"
     val ServerInstanceLabel = "ServerInstanceLabel"
 
-    val values = IndexedSeq(TargetStatus, ServerInstanceLabel)
+    val values = js.Object.freeze(js.Array(TargetStatus, ServerInstanceLabel))
   }
 
   /**
@@ -3605,7 +3609,7 @@ package codedeploy {
     val Blue  = "Blue"
     val Green = "Green"
 
-    val values = IndexedSeq(Blue, Green)
+    val values = js.Object.freeze(js.Array(Blue, Green))
   }
 
   object TargetStatusEnum {
@@ -3617,7 +3621,7 @@ package codedeploy {
     val Unknown    = "Unknown"
     val Ready      = "Ready"
 
-    val values = IndexedSeq(Pending, InProgress, Succeeded, Failed, Skipped, Unknown, Ready)
+    val values = js.Object.freeze(js.Array(Pending, InProgress, Succeeded, Failed, Skipped, Unknown, Ready))
   }
 
   /**
@@ -3730,7 +3734,7 @@ package codedeploy {
     val TimeBasedLinear = "TimeBasedLinear"
     val AllAtOnce       = "AllAtOnce"
 
-    val values = IndexedSeq(TimeBasedCanary, TimeBasedLinear, AllAtOnce)
+    val values = js.Object.freeze(js.Array(TimeBasedCanary, TimeBasedLinear, AllAtOnce))
   }
 
   /**
@@ -3769,17 +3773,19 @@ package codedeploy {
     val InstanceFailure    = "InstanceFailure"
     val InstanceReady      = "InstanceReady"
 
-    val values = IndexedSeq(
-      DeploymentStart,
-      DeploymentSuccess,
-      DeploymentFailure,
-      DeploymentStop,
-      DeploymentRollback,
-      DeploymentReady,
-      InstanceStart,
-      InstanceSuccess,
-      InstanceFailure,
-      InstanceReady
+    val values = js.Object.freeze(
+      js.Array(
+        DeploymentStart,
+        DeploymentSuccess,
+        DeploymentFailure,
+        DeploymentStop,
+        DeploymentRollback,
+        DeploymentReady,
+        InstanceStart,
+        InstanceSuccess,
+        InstanceFailure,
+        InstanceReady
+      )
     )
   }
 
diff --git a/services/codepipeline/src/main/scala/facade/amazonaws/services/CodePipeline.scala b/services/codepipeline/src/main/scala/facade/amazonaws/services/CodePipeline.scala
index 5e425ff5e..0e40a1f5f 100644
--- a/services/codepipeline/src/main/scala/facade/amazonaws/services/CodePipeline.scala
+++ b/services/codepipeline/src/main/scala/facade/amazonaws/services/CodePipeline.scala
@@ -373,7 +373,7 @@ package codepipeline {
     val Invoke   = "Invoke"
     val Approval = "Approval"
 
-    val values = IndexedSeq(Source, Build, Deploy, Test, Invoke, Approval)
+    val values = js.Object.freeze(js.Array(Source, Build, Deploy, Test, Invoke, Approval))
   }
 
   /**
@@ -437,7 +437,7 @@ package codepipeline {
     val Number  = "Number"
     val Boolean = "Boolean"
 
-    val values = IndexedSeq(String, Number, Boolean)
+    val values = js.Object.freeze(js.Array(String, Number, Boolean))
   }
 
   /**
@@ -687,7 +687,7 @@ package codepipeline {
     val Succeeded  = "Succeeded"
     val Failed     = "Failed"
 
-    val values = IndexedSeq(InProgress, Succeeded, Failed)
+    val values = js.Object.freeze(js.Array(InProgress, Succeeded, Failed))
   }
 
   object ActionOwnerEnum {
@@ -695,7 +695,7 @@ package codepipeline {
     val ThirdParty = "ThirdParty"
     val Custom     = "Custom"
 
-    val values = IndexedSeq(AWS, ThirdParty, Custom)
+    val values = js.Object.freeze(js.Array(AWS, ThirdParty, Custom))
   }
 
   /**
@@ -871,7 +871,7 @@ package codepipeline {
     val Approved = "Approved"
     val Rejected = "Rejected"
 
-    val values = IndexedSeq(Approved, Rejected)
+    val values = js.Object.freeze(js.Array(Approved, Rejected))
   }
 
   /**
@@ -966,7 +966,7 @@ package codepipeline {
   object ArtifactLocationTypeEnum {
     val S3 = "S3"
 
-    val values = IndexedSeq(S3)
+    val values = js.Object.freeze(js.Array(S3))
   }
 
   /**
@@ -1031,7 +1031,7 @@ package codepipeline {
   object ArtifactStoreTypeEnum {
     val S3 = "S3"
 
-    val values = IndexedSeq(S3)
+    val values = js.Object.freeze(js.Array(S3))
   }
 
   /**
@@ -1060,7 +1060,7 @@ package codepipeline {
   object BlockerTypeEnum {
     val Schedule = "Schedule"
 
-    val values = IndexedSeq(Schedule)
+    val values = js.Object.freeze(js.Array(Schedule))
   }
 
   /**
@@ -1383,7 +1383,7 @@ package codepipeline {
   object EncryptionKeyTypeEnum {
     val KMS = "KMS"
 
-    val values = IndexedSeq(KMS)
+    val values = js.Object.freeze(js.Array(KMS))
   }
 
   /**
@@ -1465,13 +1465,15 @@ package codepipeline {
     val RevisionUnavailable = "RevisionUnavailable"
     val SystemUnavailable   = "SystemUnavailable"
 
-    val values = IndexedSeq(
-      JobFailed,
-      ConfigurationError,
-      PermissionError,
-      RevisionOutOfSync,
-      RevisionUnavailable,
-      SystemUnavailable
+    val values = js.Object.freeze(
+      js.Array(
+        JobFailed,
+        ConfigurationError,
+        PermissionError,
+        RevisionOutOfSync,
+        RevisionUnavailable,
+        SystemUnavailable
+      )
     )
   }
 
@@ -1808,7 +1810,7 @@ package codepipeline {
     val Succeeded  = "Succeeded"
     val Failed     = "Failed"
 
-    val values = IndexedSeq(Created, Queued, Dispatched, InProgress, TimedOut, Succeeded, Failed)
+    val values = js.Object.freeze(js.Array(Created, Queued, Dispatched, InProgress, TimedOut, Succeeded, Failed))
   }
 
   @js.native
@@ -2223,7 +2225,7 @@ package codepipeline {
     val Superseded = "Superseded"
     val Failed     = "Failed"
 
-    val values = IndexedSeq(InProgress, Succeeded, Superseded, Failed)
+    val values = js.Object.freeze(js.Array(InProgress, Succeeded, Superseded, Failed))
   }
 
   /**
@@ -2856,13 +2858,13 @@ package codepipeline {
     val Failed     = "Failed"
     val Succeeded  = "Succeeded"
 
-    val values = IndexedSeq(InProgress, Failed, Succeeded)
+    val values = js.Object.freeze(js.Array(InProgress, Failed, Succeeded))
   }
 
   object StageRetryModeEnum {
     val FAILED_ACTIONS = "FAILED_ACTIONS"
 
-    val values = IndexedSeq(FAILED_ACTIONS)
+    val values = js.Object.freeze(js.Array(FAILED_ACTIONS))
   }
 
   /**
@@ -2896,7 +2898,7 @@ package codepipeline {
     val Inbound  = "Inbound"
     val Outbound = "Outbound"
 
-    val values = IndexedSeq(Inbound, Outbound)
+    val values = js.Object.freeze(js.Array(Inbound, Outbound))
   }
 
   /**
@@ -3202,7 +3204,7 @@ package codepipeline {
     val IP              = "IP"
     val UNAUTHENTICATED = "UNAUTHENTICATED"
 
-    val values = IndexedSeq(GITHUB_HMAC, IP, UNAUTHENTICATED)
+    val values = js.Object.freeze(js.Array(GITHUB_HMAC, IP, UNAUTHENTICATED))
   }
 
   /**
diff --git a/services/cognitoidentity/src/main/scala/facade/amazonaws/services/CognitoIdentity.scala b/services/cognitoidentity/src/main/scala/facade/amazonaws/services/CognitoIdentity.scala
index 936682879..f42ee59b1 100644
--- a/services/cognitoidentity/src/main/scala/facade/amazonaws/services/CognitoIdentity.scala
+++ b/services/cognitoidentity/src/main/scala/facade/amazonaws/services/CognitoIdentity.scala
@@ -145,7 +145,7 @@ package cognitoidentity {
     val AuthenticatedRole = "AuthenticatedRole"
     val Deny              = "Deny"
 
-    val values = IndexedSeq(AuthenticatedRole, Deny)
+    val values = js.Object.freeze(js.Array(AuthenticatedRole, Deny))
   }
 
   /**
@@ -342,7 +342,7 @@ package cognitoidentity {
     val AccessDenied        = "AccessDenied"
     val InternalServerError = "InternalServerError"
 
-    val values = IndexedSeq(AccessDenied, InternalServerError)
+    val values = js.Object.freeze(js.Array(AccessDenied, InternalServerError))
   }
 
   /**
@@ -886,7 +886,7 @@ package cognitoidentity {
     val StartsWith = "StartsWith"
     val NotEqual   = "NotEqual"
 
-    val values = IndexedSeq(Equals, Contains, StartsWith, NotEqual)
+    val values = js.Object.freeze(js.Array(Equals, Contains, StartsWith, NotEqual))
   }
 
   /**
@@ -966,7 +966,7 @@ package cognitoidentity {
     val Token = "Token"
     val Rules = "Rules"
 
-    val values = IndexedSeq(Token, Rules)
+    val values = js.Object.freeze(js.Array(Token, Rules))
   }
 
   /**
diff --git a/services/cognitoidentityprovider/src/main/scala/facade/amazonaws/services/CognitoIdentityProvider.scala b/services/cognitoidentityprovider/src/main/scala/facade/amazonaws/services/CognitoIdentityProvider.scala
index 0228dfe00..b6b04009b 100644
--- a/services/cognitoidentityprovider/src/main/scala/facade/amazonaws/services/CognitoIdentityProvider.scala
+++ b/services/cognitoidentityprovider/src/main/scala/facade/amazonaws/services/CognitoIdentityProvider.scala
@@ -571,7 +571,7 @@ package cognitoidentityprovider {
     val MFA_REQUIRED      = "MFA_REQUIRED"
     val NO_ACTION         = "NO_ACTION"
 
-    val values = IndexedSeq(BLOCK, MFA_IF_CONFIGURED, MFA_REQUIRED, NO_ACTION)
+    val values = js.Object.freeze(js.Array(BLOCK, MFA_IF_CONFIGURED, MFA_REQUIRED, NO_ACTION))
   }
 
   /**
@@ -1737,7 +1737,7 @@ package cognitoidentityprovider {
     val AUDIT    = "AUDIT"
     val ENFORCED = "ENFORCED"
 
-    val values = IndexedSeq(OFF, AUDIT, ENFORCED)
+    val values = js.Object.freeze(js.Array(OFF, AUDIT, ENFORCED))
   }
 
   object AliasAttributeTypeEnum {
@@ -1745,7 +1745,7 @@ package cognitoidentityprovider {
     val email              = "email"
     val preferred_username = "preferred_username"
 
-    val values = IndexedSeq(phone_number, email, preferred_username)
+    val values = js.Object.freeze(js.Array(phone_number, email, preferred_username))
   }
 
   /**
@@ -1838,7 +1838,7 @@ package cognitoidentityprovider {
     val DateTime = "DateTime"
     val Boolean  = "Boolean"
 
-    val values = IndexedSeq(String, Number, DateTime, Boolean)
+    val values = js.Object.freeze(js.Array(String, Number, DateTime, Boolean))
   }
 
   /**
@@ -1911,8 +1911,9 @@ package cognitoidentityprovider {
     val ADMIN_NO_SRP_AUTH  = "ADMIN_NO_SRP_AUTH"
     val USER_PASSWORD_AUTH = "USER_PASSWORD_AUTH"
 
-    val values =
-      IndexedSeq(USER_SRP_AUTH, REFRESH_TOKEN_AUTH, REFRESH_TOKEN, CUSTOM_AUTH, ADMIN_NO_SRP_AUTH, USER_PASSWORD_AUTH)
+    val values = js.Object.freeze(
+      js.Array(USER_SRP_AUTH, REFRESH_TOKEN_AUTH, REFRESH_TOKEN, CUSTOM_AUTH, ADMIN_NO_SRP_AUTH, USER_PASSWORD_AUTH)
+    )
   }
 
   /**
@@ -1952,7 +1953,7 @@ package cognitoidentityprovider {
     val Password = "Password"
     val Mfa      = "Mfa"
 
-    val values = IndexedSeq(Password, Mfa)
+    val values = js.Object.freeze(js.Array(Password, Mfa))
   }
 
   object ChallengeNameTypeEnum {
@@ -1967,17 +1968,19 @@ package cognitoidentityprovider {
     val ADMIN_NO_SRP_AUTH        = "ADMIN_NO_SRP_AUTH"
     val NEW_PASSWORD_REQUIRED    = "NEW_PASSWORD_REQUIRED"
 
-    val values = IndexedSeq(
-      SMS_MFA,
-      SOFTWARE_TOKEN_MFA,
-      SELECT_MFA_TYPE,
-      MFA_SETUP,
-      PASSWORD_VERIFIER,
-      CUSTOM_CHALLENGE,
-      DEVICE_SRP_AUTH,
-      DEVICE_PASSWORD_VERIFIER,
-      ADMIN_NO_SRP_AUTH,
-      NEW_PASSWORD_REQUIRED
+    val values = js.Object.freeze(
+      js.Array(
+        SMS_MFA,
+        SOFTWARE_TOKEN_MFA,
+        SELECT_MFA_TYPE,
+        MFA_SETUP,
+        PASSWORD_VERIFIER,
+        CUSTOM_CHALLENGE,
+        DEVICE_SRP_AUTH,
+        DEVICE_PASSWORD_VERIFIER,
+        ADMIN_NO_SRP_AUTH,
+        NEW_PASSWORD_REQUIRED
+      )
     )
   }
 
@@ -1985,7 +1988,7 @@ package cognitoidentityprovider {
     val Success = "Success"
     val Failure = "Failure"
 
-    val values = IndexedSeq(Success, Failure)
+    val values = js.Object.freeze(js.Array(Success, Failure))
   }
 
   /**
@@ -2098,7 +2101,7 @@ package cognitoidentityprovider {
     val BLOCK     = "BLOCK"
     val NO_ACTION = "NO_ACTION"
 
-    val values = IndexedSeq(BLOCK, NO_ACTION)
+    val values = js.Object.freeze(js.Array(BLOCK, NO_ACTION))
   }
 
   /**
@@ -2725,7 +2728,7 @@ package cognitoidentityprovider {
     val CONFIRM_WITH_LINK = "CONFIRM_WITH_LINK"
     val CONFIRM_WITH_CODE = "CONFIRM_WITH_CODE"
 
-    val values = IndexedSeq(CONFIRM_WITH_LINK, CONFIRM_WITH_CODE)
+    val values = js.Object.freeze(js.Array(CONFIRM_WITH_LINK, CONFIRM_WITH_CODE))
   }
 
   @js.native
@@ -2925,7 +2928,7 @@ package cognitoidentityprovider {
     val SMS   = "SMS"
     val EMAIL = "EMAIL"
 
-    val values = IndexedSeq(SMS, EMAIL)
+    val values = js.Object.freeze(js.Array(SMS, EMAIL))
   }
 
   @js.native
@@ -3220,7 +3223,7 @@ package cognitoidentityprovider {
     val remembered     = "remembered"
     val not_remembered = "not_remembered"
 
-    val values = IndexedSeq(remembered, not_remembered)
+    val values = js.Object.freeze(js.Array(remembered, not_remembered))
   }
 
   /**
@@ -3320,7 +3323,7 @@ package cognitoidentityprovider {
     val ACTIVE   = "ACTIVE"
     val FAILED   = "FAILED"
 
-    val values = IndexedSeq(CREATING, DELETING, UPDATING, ACTIVE, FAILED)
+    val values = js.Object.freeze(js.Array(CREATING, DELETING, UPDATING, ACTIVE, FAILED))
   }
 
   /**
@@ -3351,7 +3354,7 @@ package cognitoidentityprovider {
     val COGNITO_DEFAULT = "COGNITO_DEFAULT"
     val DEVELOPER       = "DEVELOPER"
 
-    val values = IndexedSeq(COGNITO_DEFAULT, DEVELOPER)
+    val values = js.Object.freeze(js.Array(COGNITO_DEFAULT, DEVELOPER))
   }
 
   /**
@@ -3415,14 +3418,14 @@ package cognitoidentityprovider {
     val PASSWORD_CHANGE = "PASSWORD_CHANGE"
     val SIGN_UP         = "SIGN_UP"
 
-    val values = IndexedSeq(SIGN_IN, PASSWORD_CHANGE, SIGN_UP)
+    val values = js.Object.freeze(js.Array(SIGN_IN, PASSWORD_CHANGE, SIGN_UP))
   }
 
   object EventResponseTypeEnum {
     val Success = "Success"
     val Failure = "Failure"
 
-    val values = IndexedSeq(Success, Failure)
+    val values = js.Object.freeze(js.Array(Success, Failure))
   }
 
   /**
@@ -3451,7 +3454,7 @@ package cognitoidentityprovider {
     val SignUp         = "SignUp"
     val ForgotPassword = "ForgotPassword"
 
-    val values = IndexedSeq(SignIn, SignUp, ForgotPassword)
+    val values = js.Object.freeze(js.Array(SignIn, SignUp, ForgotPassword))
   }
 
   object ExplicitAuthFlowsTypeEnum {
@@ -3459,14 +3462,14 @@ package cognitoidentityprovider {
     val CUSTOM_AUTH_FLOW_ONLY = "CUSTOM_AUTH_FLOW_ONLY"
     val USER_PASSWORD_AUTH    = "USER_PASSWORD_AUTH"
 
-    val values = IndexedSeq(ADMIN_NO_SRP_AUTH, CUSTOM_AUTH_FLOW_ONLY, USER_PASSWORD_AUTH)
+    val values = js.Object.freeze(js.Array(ADMIN_NO_SRP_AUTH, CUSTOM_AUTH_FLOW_ONLY, USER_PASSWORD_AUTH))
   }
 
   object FeedbackValueTypeEnum {
     val Valid   = "Valid"
     val Invalid = "Invalid"
 
-    val values = IndexedSeq(Valid, Invalid)
+    val values = js.Object.freeze(js.Array(Valid, Invalid))
   }
 
   /**
@@ -4044,7 +4047,7 @@ package cognitoidentityprovider {
     val LoginWithAmazon = "LoginWithAmazon"
     val OIDC            = "OIDC"
 
-    val values = IndexedSeq(SAML, Facebook, Google, LoginWithAmazon, OIDC)
+    val values = js.Object.freeze(js.Array(SAML, Facebook, Google, LoginWithAmazon, OIDC))
   }
 
   /**
@@ -4620,7 +4623,7 @@ package cognitoidentityprovider {
     val RESEND   = "RESEND"
     val SUPPRESS = "SUPPRESS"
 
-    val values = IndexedSeq(RESEND, SUPPRESS)
+    val values = js.Object.freeze(js.Array(RESEND, SUPPRESS))
   }
 
   /**
@@ -4755,7 +4758,7 @@ package cognitoidentityprovider {
     val `implicit`         = "implicit"
     val client_credentials = "client_credentials"
 
-    val values = IndexedSeq(code, `implicit`, client_credentials)
+    val values = js.Object.freeze(js.Array(code, `implicit`, client_credentials))
   }
 
   /**
@@ -5048,7 +5051,7 @@ package cognitoidentityprovider {
     val AccountTakeover = "AccountTakeover"
     val Block           = "Block"
 
-    val values = IndexedSeq(NoRisk, AccountTakeover, Block)
+    val values = js.Object.freeze(js.Array(NoRisk, AccountTakeover, Block))
   }
 
   /**
@@ -5077,7 +5080,7 @@ package cognitoidentityprovider {
     val Medium = "Medium"
     val High   = "High"
 
-    val values = IndexedSeq(Low, Medium, High)
+    val values = js.Object.freeze(js.Array(Low, Medium, High))
   }
 
   /**
@@ -5549,7 +5552,7 @@ package cognitoidentityprovider {
     val Enabled  = "Enabled"
     val Disabled = "Disabled"
 
-    val values = IndexedSeq(Enabled, Disabled)
+    val values = js.Object.freeze(js.Array(Enabled, Disabled))
   }
 
   /**
@@ -6204,7 +6207,7 @@ package cognitoidentityprovider {
     val Failed     = "Failed"
     val Succeeded  = "Succeeded"
 
-    val values = IndexedSeq(Created, Pending, InProgress, Stopping, Expired, Stopped, Failed, Succeeded)
+    val values = js.Object.freeze(js.Array(Created, Pending, InProgress, Stopping, Expired, Stopped, Failed, Succeeded))
   }
 
   /**
@@ -6414,7 +6417,7 @@ package cognitoidentityprovider {
     val ON       = "ON"
     val OPTIONAL = "OPTIONAL"
 
-    val values = IndexedSeq(OFF, ON, OPTIONAL)
+    val values = js.Object.freeze(js.Array(OFF, ON, OPTIONAL))
   }
 
   /**
@@ -6546,8 +6549,9 @@ package cognitoidentityprovider {
     val RESET_REQUIRED        = "RESET_REQUIRED"
     val FORCE_CHANGE_PASSWORD = "FORCE_CHANGE_PASSWORD"
 
-    val values =
-      IndexedSeq(UNCONFIRMED, CONFIRMED, ARCHIVED, COMPROMISED, UNKNOWN, RESET_REQUIRED, FORCE_CHANGE_PASSWORD)
+    val values = js.Object.freeze(
+      js.Array(UNCONFIRMED, CONFIRMED, ARCHIVED, COMPROMISED, UNKNOWN, RESET_REQUIRED, FORCE_CHANGE_PASSWORD)
+    )
   }
 
   /**
@@ -6590,7 +6594,7 @@ package cognitoidentityprovider {
     val phone_number = "phone_number"
     val email        = "email"
 
-    val values = IndexedSeq(phone_number, email)
+    val values = js.Object.freeze(js.Array(phone_number, email))
   }
 
   /**
@@ -6630,7 +6634,7 @@ package cognitoidentityprovider {
     val phone_number = "phone_number"
     val email        = "email"
 
-    val values = IndexedSeq(phone_number, email)
+    val values = js.Object.freeze(js.Array(phone_number, email))
   }
 
   @js.native
@@ -6681,7 +6685,7 @@ package cognitoidentityprovider {
     val SUCCESS = "SUCCESS"
     val ERROR   = "ERROR"
 
-    val values = IndexedSeq(SUCCESS, ERROR)
+    val values = js.Object.freeze(js.Array(SUCCESS, ERROR))
   }
 
   /**
diff --git a/services/cognitosync/src/main/scala/facade/amazonaws/services/CognitoSync.scala b/services/cognitosync/src/main/scala/facade/amazonaws/services/CognitoSync.scala
index 51158f8cd..1856fe1fd 100644
--- a/services/cognitosync/src/main/scala/facade/amazonaws/services/CognitoSync.scala
+++ b/services/cognitosync/src/main/scala/facade/amazonaws/services/CognitoSync.scala
@@ -163,7 +163,7 @@ package cognitosync {
     val FAILED      = "FAILED"
     val SUCCEEDED   = "SUCCEEDED"
 
-    val values = IndexedSeq(NOT_STARTED, IN_PROGRESS, FAILED, SUCCEEDED)
+    val values = js.Object.freeze(js.Array(NOT_STARTED, IN_PROGRESS, FAILED, SUCCEEDED))
   }
 
   /**
@@ -838,7 +838,7 @@ package cognitosync {
     val replace = "replace"
     val remove  = "remove"
 
-    val values = IndexedSeq(replace, remove)
+    val values = js.Object.freeze(js.Array(replace, remove))
   }
 
   object PlatformEnum {
@@ -847,7 +847,7 @@ package cognitosync {
     val GCM          = "GCM"
     val ADM          = "ADM"
 
-    val values = IndexedSeq(APNS, APNS_SANDBOX, GCM, ADM)
+    val values = js.Object.freeze(js.Array(APNS, APNS_SANDBOX, GCM, ADM))
   }
 
   /**
@@ -1077,7 +1077,7 @@ package cognitosync {
     val ENABLED  = "ENABLED"
     val DISABLED = "DISABLED"
 
-    val values = IndexedSeq(ENABLED, DISABLED)
+    val values = js.Object.freeze(js.Array(ENABLED, DISABLED))
   }
 
   /**
diff --git a/services/comprehend/src/main/scala/facade/amazonaws/services/Comprehend.scala b/services/comprehend/src/main/scala/facade/amazonaws/services/Comprehend.scala
index a9f23f941..d0fbaad6a 100644
--- a/services/comprehend/src/main/scala/facade/amazonaws/services/Comprehend.scala
+++ b/services/comprehend/src/main/scala/facade/amazonaws/services/Comprehend.scala
@@ -1954,7 +1954,8 @@ package comprehend {
     val TITLE           = "TITLE"
     val OTHER           = "OTHER"
 
-    val values = IndexedSeq(PERSON, LOCATION, ORGANIZATION, COMMERCIAL_ITEM, EVENT, DATE, QUANTITY, TITLE, OTHER)
+    val values =
+      js.Object.freeze(js.Array(PERSON, LOCATION, ORGANIZATION, COMMERCIAL_ITEM, EVENT, DATE, QUANTITY, TITLE, OTHER))
   }
 
   /**
@@ -2028,7 +2029,7 @@ package comprehend {
     val ONE_DOC_PER_FILE = "ONE_DOC_PER_FILE"
     val ONE_DOC_PER_LINE = "ONE_DOC_PER_LINE"
 
-    val values = IndexedSeq(ONE_DOC_PER_FILE, ONE_DOC_PER_LINE)
+    val values = js.Object.freeze(js.Array(ONE_DOC_PER_FILE, ONE_DOC_PER_LINE))
   }
 
   object JobStatusEnum {
@@ -2039,7 +2040,7 @@ package comprehend {
     val STOP_REQUESTED = "STOP_REQUESTED"
     val STOPPED        = "STOPPED"
 
-    val values = IndexedSeq(SUBMITTED, IN_PROGRESS, COMPLETED, FAILED, STOP_REQUESTED, STOPPED)
+    val values = js.Object.freeze(js.Array(SUBMITTED, IN_PROGRESS, COMPLETED, FAILED, STOP_REQUESTED, STOPPED))
   }
 
   /**
@@ -2155,7 +2156,7 @@ package comprehend {
     val it = "it"
     val pt = "pt"
 
-    val values = IndexedSeq(en, es, fr, de, it, pt)
+    val values = js.Object.freeze(js.Array(en, es, fr, de, it, pt))
   }
 
   @js.native
@@ -2531,7 +2532,7 @@ package comprehend {
     val IN_ERROR       = "IN_ERROR"
     val TRAINED        = "TRAINED"
 
-    val values = IndexedSeq(SUBMITTED, TRAINING, DELETING, STOP_REQUESTED, STOPPED, IN_ERROR, TRAINED)
+    val values = js.Object.freeze(js.Array(SUBMITTED, TRAINING, DELETING, STOP_REQUESTED, STOPPED, IN_ERROR, TRAINED))
   }
 
   /**
@@ -2599,8 +2600,9 @@ package comprehend {
     val SYM   = "SYM"
     val VERB  = "VERB"
 
-    val values =
-      IndexedSeq(ADJ, ADP, ADV, AUX, CONJ, CCONJ, DET, INTJ, NOUN, NUM, O, PART, PRON, PROPN, PUNCT, SCONJ, SYM, VERB)
+    val values = js.Object.freeze(
+      js.Array(ADJ, ADP, ADV, AUX, CONJ, CCONJ, DET, INTJ, NOUN, NUM, O, PART, PRON, PROPN, PUNCT, SCONJ, SYM, VERB)
+    )
   }
 
   /**
@@ -2714,7 +2716,7 @@ package comprehend {
     val NEUTRAL  = "NEUTRAL"
     val MIXED    = "MIXED"
 
-    val values = IndexedSeq(POSITIVE, NEGATIVE, NEUTRAL, MIXED)
+    val values = js.Object.freeze(js.Array(POSITIVE, NEGATIVE, NEUTRAL, MIXED))
   }
 
   @js.native
@@ -3259,7 +3261,7 @@ package comprehend {
     val it = "it"
     val pt = "pt"
 
-    val values = IndexedSeq(en, es, fr, de, it, pt)
+    val values = js.Object.freeze(js.Array(en, es, fr, de, it, pt))
   }
 
   /**
diff --git a/services/comprehendmedical/src/main/scala/facade/amazonaws/services/ComprehendMedical.scala b/services/comprehendmedical/src/main/scala/facade/amazonaws/services/ComprehendMedical.scala
index cb7773d54..4e610dd17 100644
--- a/services/comprehendmedical/src/main/scala/facade/amazonaws/services/ComprehendMedical.scala
+++ b/services/comprehendmedical/src/main/scala/facade/amazonaws/services/ComprehendMedical.scala
@@ -81,7 +81,7 @@ package comprehendmedical {
     val DIAGNOSIS = "DIAGNOSIS"
     val NEGATION  = "NEGATION"
 
-    val values = IndexedSeq(SIGN, SYMPTOM, DIAGNOSIS, NEGATION)
+    val values = js.Object.freeze(js.Array(SIGN, SYMPTOM, DIAGNOSIS, NEGATION))
   }
 
   @js.native
@@ -233,35 +233,37 @@ package comprehendmedical {
     val QUALITY           = "QUALITY"
     val QUANTITY          = "QUANTITY"
 
-    val values = IndexedSeq(
-      NAME,
-      DOSAGE,
-      ROUTE_OR_MODE,
-      FORM,
-      FREQUENCY,
-      DURATION,
-      GENERIC_NAME,
-      BRAND_NAME,
-      STRENGTH,
-      RATE,
-      ACUITY,
-      TEST_NAME,
-      TEST_VALUE,
-      TEST_UNITS,
-      PROCEDURE_NAME,
-      TREATMENT_NAME,
-      DATE,
-      AGE,
-      CONTACT_POINT,
-      EMAIL,
-      IDENTIFIER,
-      URL,
-      ADDRESS,
-      PROFESSION,
-      SYSTEM_ORGAN_SITE,
-      DIRECTION,
-      QUALITY,
-      QUANTITY
+    val values = js.Object.freeze(
+      js.Array(
+        NAME,
+        DOSAGE,
+        ROUTE_OR_MODE,
+        FORM,
+        FREQUENCY,
+        DURATION,
+        GENERIC_NAME,
+        BRAND_NAME,
+        STRENGTH,
+        RATE,
+        ACUITY,
+        TEST_NAME,
+        TEST_VALUE,
+        TEST_UNITS,
+        PROCEDURE_NAME,
+        TREATMENT_NAME,
+        DATE,
+        AGE,
+        CONTACT_POINT,
+        EMAIL,
+        IDENTIFIER,
+        URL,
+        ADDRESS,
+        PROFESSION,
+        SYSTEM_ORGAN_SITE,
+        DIRECTION,
+        QUALITY,
+        QUANTITY
+      )
     )
   }
 
@@ -272,8 +274,9 @@ package comprehendmedical {
     val TEST_TREATMENT_PROCEDURE     = "TEST_TREATMENT_PROCEDURE"
     val ANATOMY                      = "ANATOMY"
 
-    val values =
-      IndexedSeq(MEDICATION, MEDICAL_CONDITION, PROTECTED_HEALTH_INFORMATION, TEST_TREATMENT_PROCEDURE, ANATOMY)
+    val values = js.Object.freeze(
+      js.Array(MEDICATION, MEDICAL_CONDITION, PROTECTED_HEALTH_INFORMATION, TEST_TREATMENT_PROCEDURE, ANATOMY)
+    )
   }
 
   /**
diff --git a/services/configservice/src/main/scala/facade/amazonaws/services/ConfigService.scala b/services/configservice/src/main/scala/facade/amazonaws/services/ConfigService.scala
index 72c6d1f51..9c76464c2 100644
--- a/services/configservice/src/main/scala/facade/amazonaws/services/ConfigService.scala
+++ b/services/configservice/src/main/scala/facade/amazonaws/services/ConfigService.scala
@@ -660,14 +660,14 @@ package configservice {
     val SUCCEEDED = "SUCCEEDED"
     val OUTDATED  = "OUTDATED"
 
-    val values = IndexedSeq(FAILED, SUCCEEDED, OUTDATED)
+    val values = js.Object.freeze(js.Array(FAILED, SUCCEEDED, OUTDATED))
   }
 
   object AggregatedSourceTypeEnum {
     val ACCOUNT      = "ACCOUNT"
     val ORGANIZATION = "ORGANIZATION"
 
-    val values = IndexedSeq(ACCOUNT, ORGANIZATION)
+    val values = js.Object.freeze(js.Array(ACCOUNT, ORGANIZATION))
   }
 
   /**
@@ -835,7 +835,7 @@ package configservice {
     val Reverse = "Reverse"
     val Forward = "Forward"
 
-    val values = IndexedSeq(Reverse, Forward)
+    val values = js.Object.freeze(js.Array(Reverse, Forward))
   }
 
   /**
@@ -976,7 +976,7 @@ package configservice {
     val NOT_APPLICABLE    = "NOT_APPLICABLE"
     val INSUFFICIENT_DATA = "INSUFFICIENT_DATA"
 
-    val values = IndexedSeq(COMPLIANT, NON_COMPLIANT, NOT_APPLICABLE, INSUFFICIENT_DATA)
+    val values = js.Object.freeze(js.Array(COMPLIANT, NON_COMPLIANT, NOT_APPLICABLE, INSUFFICIENT_DATA))
   }
 
   /**
@@ -1114,7 +1114,7 @@ package configservice {
     val ACCOUNT_ID = "ACCOUNT_ID"
     val AWS_REGION = "AWS_REGION"
 
-    val values = IndexedSeq(ACCOUNT_ID, AWS_REGION)
+    val values = js.Object.freeze(js.Array(ACCOUNT_ID, AWS_REGION))
   }
 
   /**
@@ -1176,7 +1176,7 @@ package configservice {
     val DELETING_RESULTS = "DELETING_RESULTS"
     val EVALUATING       = "EVALUATING"
 
-    val values = IndexedSeq(ACTIVE, DELETING, DELETING_RESULTS, EVALUATING)
+    val values = js.Object.freeze(js.Array(ACTIVE, DELETING, DELETING_RESULTS, EVALUATING))
   }
 
   /**
@@ -1347,7 +1347,9 @@ package configservice {
     val ResourceDeleted            = "ResourceDeleted"
     val ResourceDeletedNotRecorded = "ResourceDeletedNotRecorded"
 
-    val values = IndexedSeq(OK, ResourceDiscovered, ResourceNotRecorded, ResourceDeleted, ResourceDeletedNotRecorded)
+    val values = js.Object.freeze(
+      js.Array(OK, ResourceDiscovered, ResourceNotRecorded, ResourceDeleted, ResourceDeletedNotRecorded)
+    )
   }
 
   /**
@@ -1734,7 +1736,7 @@ package configservice {
     val Failure        = "Failure"
     val Not_Applicable = "Not_Applicable"
 
-    val values = IndexedSeq(Success, Failure, Not_Applicable)
+    val values = js.Object.freeze(js.Array(Success, Failure, Not_Applicable))
   }
 
   @js.native
@@ -2576,7 +2578,7 @@ package configservice {
   object EventSourceEnum {
     val `aws.config` = "aws.config"
 
-    val values = IndexedSeq(`aws.config`)
+    val values = js.Object.freeze(js.Array(`aws.config`))
   }
 
   /**
@@ -3288,7 +3290,7 @@ package configservice {
     val Twelve_Hours     = "Twelve_Hours"
     val TwentyFour_Hours = "TwentyFour_Hours"
 
-    val values = IndexedSeq(One_Hour, Three_Hours, Six_Hours, Twelve_Hours, TwentyFour_Hours)
+    val values = js.Object.freeze(js.Array(One_Hour, Three_Hours, Six_Hours, Twelve_Hours, TwentyFour_Hours))
   }
 
   object MemberAccountRuleStatusEnum {
@@ -3302,16 +3304,18 @@ package configservice {
     val DELETE_FAILED      = "DELETE_FAILED"
     val DELETE_IN_PROGRESS = "DELETE_IN_PROGRESS"
 
-    val values = IndexedSeq(
-      CREATE_SUCCESSFUL,
-      CREATE_IN_PROGRESS,
-      CREATE_FAILED,
-      UPDATE_SUCCESSFUL,
-      UPDATE_FAILED,
-      UPDATE_IN_PROGRESS,
-      DELETE_SUCCESSFUL,
-      DELETE_FAILED,
-      DELETE_IN_PROGRESS
+    val values = js.Object.freeze(
+      js.Array(
+        CREATE_SUCCESSFUL,
+        CREATE_IN_PROGRESS,
+        CREATE_FAILED,
+        UPDATE_SUCCESSFUL,
+        UPDATE_FAILED,
+        UPDATE_IN_PROGRESS,
+        DELETE_SUCCESSFUL,
+        DELETE_FAILED,
+        DELETE_IN_PROGRESS
+      )
     )
   }
 
@@ -3353,11 +3357,13 @@ package configservice {
     val ScheduledNotification                        = "ScheduledNotification"
     val OversizedConfigurationItemChangeNotification = "OversizedConfigurationItemChangeNotification"
 
-    val values = IndexedSeq(
-      ConfigurationItemChangeNotification,
-      ConfigurationSnapshotDeliveryCompleted,
-      ScheduledNotification,
-      OversizedConfigurationItemChangeNotification
+    val values = js.Object.freeze(
+      js.Array(
+        ConfigurationItemChangeNotification,
+        ConfigurationSnapshotDeliveryCompleted,
+        ScheduledNotification,
+        OversizedConfigurationItemChangeNotification
+      )
     )
   }
 
@@ -3457,10 +3463,8 @@ package configservice {
     val OversizedConfigurationItemChangeNotification = "OversizedConfigurationItemChangeNotification"
     val ScheduledNotification                        = "ScheduledNotification"
 
-    val values = IndexedSeq(
-      ConfigurationItemChangeNotification,
-      OversizedConfigurationItemChangeNotification,
-      ScheduledNotification
+    val values = js.Object.freeze(
+      js.Array(ConfigurationItemChangeNotification, OversizedConfigurationItemChangeNotification, ScheduledNotification)
     )
   }
 
@@ -3554,16 +3558,18 @@ package configservice {
     val DELETE_FAILED      = "DELETE_FAILED"
     val DELETE_IN_PROGRESS = "DELETE_IN_PROGRESS"
 
-    val values = IndexedSeq(
-      CREATE_SUCCESSFUL,
-      CREATE_IN_PROGRESS,
-      CREATE_FAILED,
-      UPDATE_SUCCESSFUL,
-      UPDATE_FAILED,
-      UPDATE_IN_PROGRESS,
-      DELETE_SUCCESSFUL,
-      DELETE_FAILED,
-      DELETE_IN_PROGRESS
+    val values = js.Object.freeze(
+      js.Array(
+        CREATE_SUCCESSFUL,
+        CREATE_IN_PROGRESS,
+        CREATE_FAILED,
+        UPDATE_SUCCESSFUL,
+        UPDATE_FAILED,
+        UPDATE_IN_PROGRESS,
+        DELETE_SUCCESSFUL,
+        DELETE_FAILED,
+        DELETE_IN_PROGRESS
+      )
     )
   }
 
@@ -3571,7 +3577,7 @@ package configservice {
     val CUSTOM_LAMBDA = "CUSTOM_LAMBDA"
     val AWS           = "AWS"
 
-    val values = IndexedSeq(CUSTOM_LAMBDA, AWS)
+    val values = js.Object.freeze(js.Array(CUSTOM_LAMBDA, AWS))
   }
 
   /**
@@ -3912,7 +3918,7 @@ package configservice {
     val Success = "Success"
     val Failure = "Failure"
 
-    val values = IndexedSeq(Pending, Success, Failure)
+    val values = js.Object.freeze(js.Array(Pending, Success, Failure))
   }
 
   /**
@@ -4014,7 +4020,7 @@ package configservice {
     val SUCCEEDED   = "SUCCEEDED"
     val FAILED      = "FAILED"
 
-    val values = IndexedSeq(QUEUED, IN_PROGRESS, SUCCEEDED, FAILED)
+    val values = js.Object.freeze(js.Array(QUEUED, IN_PROGRESS, SUCCEEDED, FAILED))
   }
 
   /**
@@ -4082,7 +4088,7 @@ package configservice {
     val PENDING   = "PENDING"
     val FAILED    = "FAILED"
 
-    val values = IndexedSeq(SUCCEEDED, PENDING, FAILED)
+    val values = js.Object.freeze(js.Array(SUCCEEDED, PENDING, FAILED))
   }
 
   /**
@@ -4109,7 +4115,7 @@ package configservice {
   object RemediationTargetTypeEnum {
     val SSM_DOCUMENT = "SSM_DOCUMENT"
 
-    val values = IndexedSeq(SSM_DOCUMENT)
+    val values = js.Object.freeze(js.Array(SSM_DOCUMENT))
   }
 
   /**
@@ -4162,7 +4168,7 @@ package configservice {
     val ACCOUNT_ID    = "ACCOUNT_ID"
     val AWS_REGION    = "AWS_REGION"
 
-    val values = IndexedSeq(RESOURCE_TYPE, ACCOUNT_ID, AWS_REGION)
+    val values = js.Object.freeze(js.Array(RESOURCE_TYPE, ACCOUNT_ID, AWS_REGION))
   }
 
   /**
@@ -4308,71 +4314,73 @@ package configservice {
     val `AWS::Config::ResourceCompliance`           = "AWS::Config::ResourceCompliance"
     val `AWS::CodePipeline::Pipeline`               = "AWS::CodePipeline::Pipeline"
 
-    val values = IndexedSeq(
-      `AWS::EC2::CustomerGateway`,
-      `AWS::EC2::EIP`,
-      `AWS::EC2::Host`,
-      `AWS::EC2::Instance`,
-      `AWS::EC2::InternetGateway`,
-      `AWS::EC2::NetworkAcl`,
-      `AWS::EC2::NetworkInterface`,
-      `AWS::EC2::RouteTable`,
-      `AWS::EC2::SecurityGroup`,
-      `AWS::EC2::Subnet`,
-      `AWS::CloudTrail::Trail`,
-      `AWS::EC2::Volume`,
-      `AWS::EC2::VPC`,
-      `AWS::EC2::VPNConnection`,
-      `AWS::EC2::VPNGateway`,
-      `AWS::IAM::Group`,
-      `AWS::IAM::Policy`,
-      `AWS::IAM::Role`,
-      `AWS::IAM::User`,
-      `AWS::ACM::Certificate`,
-      `AWS::RDS::DBInstance`,
-      `AWS::RDS::DBSubnetGroup`,
-      `AWS::RDS::DBSecurityGroup`,
-      `AWS::RDS::DBSnapshot`,
-      `AWS::RDS::EventSubscription`,
-      `AWS::ElasticLoadBalancingV2::LoadBalancer`,
-      `AWS::S3::Bucket`,
-      `AWS::SSM::ManagedInstanceInventory`,
-      `AWS::Redshift::Cluster`,
-      `AWS::Redshift::ClusterSnapshot`,
-      `AWS::Redshift::ClusterParameterGroup`,
-      `AWS::Redshift::ClusterSecurityGroup`,
-      `AWS::Redshift::ClusterSubnetGroup`,
-      `AWS::Redshift::EventSubscription`,
-      `AWS::CloudWatch::Alarm`,
-      `AWS::CloudFormation::Stack`,
-      `AWS::DynamoDB::Table`,
-      `AWS::AutoScaling::AutoScalingGroup`,
-      `AWS::AutoScaling::LaunchConfiguration`,
-      `AWS::AutoScaling::ScalingPolicy`,
-      `AWS::AutoScaling::ScheduledAction`,
-      `AWS::CodeBuild::Project`,
-      `AWS::WAF::RateBasedRule`,
-      `AWS::WAF::Rule`,
-      `AWS::WAF::WebACL`,
-      `AWS::WAFRegional::RateBasedRule`,
-      `AWS::WAFRegional::Rule`,
-      `AWS::WAFRegional::WebACL`,
-      `AWS::CloudFront::Distribution`,
-      `AWS::CloudFront::StreamingDistribution`,
-      `AWS::WAF::RuleGroup`,
-      `AWS::WAFRegional::RuleGroup`,
-      `AWS::Lambda::Function`,
-      `AWS::ElasticBeanstalk::Application`,
-      `AWS::ElasticBeanstalk::ApplicationVersion`,
-      `AWS::ElasticBeanstalk::Environment`,
-      `AWS::ElasticLoadBalancing::LoadBalancer`,
-      `AWS::XRay::EncryptionConfig`,
-      `AWS::SSM::AssociationCompliance`,
-      `AWS::SSM::PatchCompliance`,
-      `AWS::Shield::Protection`,
-      `AWS::ShieldRegional::Protection`,
-      `AWS::Config::ResourceCompliance`,
-      `AWS::CodePipeline::Pipeline`
+    val values = js.Object.freeze(
+      js.Array(
+        `AWS::EC2::CustomerGateway`,
+        `AWS::EC2::EIP`,
+        `AWS::EC2::Host`,
+        `AWS::EC2::Instance`,
+        `AWS::EC2::InternetGateway`,
+        `AWS::EC2::NetworkAcl`,
+        `AWS::EC2::NetworkInterface`,
+        `AWS::EC2::RouteTable`,
+        `AWS::EC2::SecurityGroup`,
+        `AWS::EC2::Subnet`,
+        `AWS::CloudTrail::Trail`,
+        `AWS::EC2::Volume`,
+        `AWS::EC2::VPC`,
+        `AWS::EC2::VPNConnection`,
+        `AWS::EC2::VPNGateway`,
+        `AWS::IAM::Group`,
+        `AWS::IAM::Policy`,
+        `AWS::IAM::Role`,
+        `AWS::IAM::User`,
+        `AWS::ACM::Certificate`,
+        `AWS::RDS::DBInstance`,
+        `AWS::RDS::DBSubnetGroup`,
+        `AWS::RDS::DBSecurityGroup`,
+        `AWS::RDS::DBSnapshot`,
+        `AWS::RDS::EventSubscription`,
+        `AWS::ElasticLoadBalancingV2::LoadBalancer`,
+        `AWS::S3::Bucket`,
+        `AWS::SSM::ManagedInstanceInventory`,
+        `AWS::Redshift::Cluster`,
+        `AWS::Redshift::ClusterSnapshot`,
+        `AWS::Redshift::ClusterParameterGroup`,
+        `AWS::Redshift::ClusterSecurityGroup`,
+        `AWS::Redshift::ClusterSubnetGroup`,
+        `AWS::Redshift::EventSubscription`,
+        `AWS::CloudWatch::Alarm`,
+        `AWS::CloudFormation::Stack`,
+        `AWS::DynamoDB::Table`,
+        `AWS::AutoScaling::AutoScalingGroup`,
+        `AWS::AutoScaling::LaunchConfiguration`,
+        `AWS::AutoScaling::ScalingPolicy`,
+        `AWS::AutoScaling::ScheduledAction`,
+        `AWS::CodeBuild::Project`,
+        `AWS::WAF::RateBasedRule`,
+        `AWS::WAF::Rule`,
+        `AWS::WAF::WebACL`,
+        `AWS::WAFRegional::RateBasedRule`,
+        `AWS::WAFRegional::Rule`,
+        `AWS::WAFRegional::WebACL`,
+        `AWS::CloudFront::Distribution`,
+        `AWS::CloudFront::StreamingDistribution`,
+        `AWS::WAF::RuleGroup`,
+        `AWS::WAFRegional::RuleGroup`,
+        `AWS::Lambda::Function`,
+        `AWS::ElasticBeanstalk::Application`,
+        `AWS::ElasticBeanstalk::ApplicationVersion`,
+        `AWS::ElasticBeanstalk::Environment`,
+        `AWS::ElasticLoadBalancing::LoadBalancer`,
+        `AWS::XRay::EncryptionConfig`,
+        `AWS::SSM::AssociationCompliance`,
+        `AWS::SSM::PatchCompliance`,
+        `AWS::Shield::Protection`,
+        `AWS::ShieldRegional::Protection`,
+        `AWS::Config::ResourceCompliance`,
+        `AWS::CodePipeline::Pipeline`
+      )
     )
   }
 
@@ -4397,7 +4405,7 @@ package configservice {
   object ResourceValueTypeEnum {
     val RESOURCE_ID = "RESOURCE_ID"
 
-    val values = IndexedSeq(RESOURCE_ID)
+    val values = js.Object.freeze(js.Array(RESOURCE_ID))
   }
 
   /**
diff --git a/services/connect/src/main/scala/facade/amazonaws/services/Connect.scala b/services/connect/src/main/scala/facade/amazonaws/services/Connect.scala
index 152c41b1d..3b9b41481 100644
--- a/services/connect/src/main/scala/facade/amazonaws/services/Connect.scala
+++ b/services/connect/src/main/scala/facade/amazonaws/services/Connect.scala
@@ -154,13 +154,13 @@ package connect {
   object ChannelEnum {
     val VOICE = "VOICE"
 
-    val values = IndexedSeq(VOICE)
+    val values = js.Object.freeze(js.Array(VOICE))
   }
 
   object ComparisonEnum {
     val LT = "LT"
 
-    val values = IndexedSeq(LT)
+    val values = js.Object.freeze(js.Array(LT))
   }
 
   @js.native
@@ -306,17 +306,19 @@ package connect {
     val OLDEST_CONTACT_AGE        = "OLDEST_CONTACT_AGE"
     val CONTACTS_SCHEDULED        = "CONTACTS_SCHEDULED"
 
-    val values = IndexedSeq(
-      AGENTS_ONLINE,
-      AGENTS_AVAILABLE,
-      AGENTS_ON_CALL,
-      AGENTS_NON_PRODUCTIVE,
-      AGENTS_AFTER_CONTACT_WORK,
-      AGENTS_ERROR,
-      AGENTS_STAFFED,
-      CONTACTS_IN_QUEUE,
-      OLDEST_CONTACT_AGE,
-      CONTACTS_SCHEDULED
+    val values = js.Object.freeze(
+      js.Array(
+        AGENTS_ONLINE,
+        AGENTS_AVAILABLE,
+        AGENTS_ON_CALL,
+        AGENTS_NON_PRODUCTIVE,
+        AGENTS_AFTER_CONTACT_WORK,
+        AGENTS_ERROR,
+        AGENTS_STAFFED,
+        CONTACTS_IN_QUEUE,
+        OLDEST_CONTACT_AGE,
+        CONTACTS_SCHEDULED
+      )
     )
   }
 
@@ -685,7 +687,7 @@ package connect {
     val QUEUE   = "QUEUE"
     val CHANNEL = "CHANNEL"
 
-    val values = IndexedSeq(QUEUE, CHANNEL)
+    val values = js.Object.freeze(js.Array(QUEUE, CHANNEL))
   }
 
   /**
@@ -904,32 +906,34 @@ package connect {
     val INTERACTION_AND_HOLD_TIME           = "INTERACTION_AND_HOLD_TIME"
     val SERVICE_LEVEL                       = "SERVICE_LEVEL"
 
-    val values = IndexedSeq(
-      CONTACTS_QUEUED,
-      CONTACTS_HANDLED,
-      CONTACTS_ABANDONED,
-      CONTACTS_CONSULTED,
-      CONTACTS_AGENT_HUNG_UP_FIRST,
-      CONTACTS_HANDLED_INCOMING,
-      CONTACTS_HANDLED_OUTBOUND,
-      CONTACTS_HOLD_ABANDONS,
-      CONTACTS_TRANSFERRED_IN,
-      CONTACTS_TRANSFERRED_OUT,
-      CONTACTS_TRANSFERRED_IN_FROM_QUEUE,
-      CONTACTS_TRANSFERRED_OUT_FROM_QUEUE,
-      CONTACTS_MISSED,
-      CALLBACK_CONTACTS_HANDLED,
-      API_CONTACTS_HANDLED,
-      OCCUPANCY,
-      HANDLE_TIME,
-      AFTER_CONTACT_WORK_TIME,
-      QUEUED_TIME,
-      ABANDON_TIME,
-      QUEUE_ANSWER_TIME,
-      HOLD_TIME,
-      INTERACTION_TIME,
-      INTERACTION_AND_HOLD_TIME,
-      SERVICE_LEVEL
+    val values = js.Object.freeze(
+      js.Array(
+        CONTACTS_QUEUED,
+        CONTACTS_HANDLED,
+        CONTACTS_ABANDONED,
+        CONTACTS_CONSULTED,
+        CONTACTS_AGENT_HUNG_UP_FIRST,
+        CONTACTS_HANDLED_INCOMING,
+        CONTACTS_HANDLED_OUTBOUND,
+        CONTACTS_HOLD_ABANDONS,
+        CONTACTS_TRANSFERRED_IN,
+        CONTACTS_TRANSFERRED_OUT,
+        CONTACTS_TRANSFERRED_IN_FROM_QUEUE,
+        CONTACTS_TRANSFERRED_OUT_FROM_QUEUE,
+        CONTACTS_MISSED,
+        CALLBACK_CONTACTS_HANDLED,
+        API_CONTACTS_HANDLED,
+        OCCUPANCY,
+        HANDLE_TIME,
+        AFTER_CONTACT_WORK_TIME,
+        QUEUED_TIME,
+        ABANDON_TIME,
+        QUEUE_ANSWER_TIME,
+        HOLD_TIME,
+        INTERACTION_TIME,
+        INTERACTION_AND_HOLD_TIME,
+        SERVICE_LEVEL
+      )
     )
   }
 
@@ -1124,7 +1128,7 @@ package connect {
     val SOFT_PHONE = "SOFT_PHONE"
     val DESK_PHONE = "DESK_PHONE"
 
-    val values = IndexedSeq(SOFT_PHONE, DESK_PHONE)
+    val values = js.Object.freeze(js.Array(SOFT_PHONE, DESK_PHONE))
   }
 
   /**
@@ -1251,7 +1255,7 @@ package connect {
     val MAX = "MAX"
     val AVG = "AVG"
 
-    val values = IndexedSeq(SUM, MAX, AVG)
+    val values = js.Object.freeze(js.Array(SUM, MAX, AVG))
   }
 
   @js.native
@@ -1312,7 +1316,7 @@ package connect {
     val COUNT   = "COUNT"
     val PERCENT = "PERCENT"
 
-    val values = IndexedSeq(SECONDS, COUNT, PERCENT)
+    val values = js.Object.freeze(js.Array(SECONDS, COUNT, PERCENT))
   }
 
   @js.native
diff --git a/services/costexplorer/src/main/scala/facade/amazonaws/services/CostExplorer.scala b/services/costexplorer/src/main/scala/facade/amazonaws/services/CostExplorer.scala
index 4204c5dc5..e280e3224 100644
--- a/services/costexplorer/src/main/scala/facade/amazonaws/services/CostExplorer.scala
+++ b/services/costexplorer/src/main/scala/facade/amazonaws/services/CostExplorer.scala
@@ -139,14 +139,14 @@ package costexplorer {
     val PAYER  = "PAYER"
     val LINKED = "LINKED"
 
-    val values = IndexedSeq(PAYER, LINKED)
+    val values = js.Object.freeze(js.Array(PAYER, LINKED))
   }
 
   object ContextEnum {
     val COST_AND_USAGE = "COST_AND_USAGE"
     val RESERVATIONS   = "RESERVATIONS"
 
-    val values = IndexedSeq(COST_AND_USAGE, RESERVATIONS)
+    val values = js.Object.freeze(js.Array(COST_AND_USAGE, RESERVATIONS))
   }
 
   /**
@@ -368,30 +368,32 @@ package costexplorer {
     val RESERVATION_ID       = "RESERVATION_ID"
     val RIGHTSIZING_TYPE     = "RIGHTSIZING_TYPE"
 
-    val values = IndexedSeq(
-      AZ,
-      INSTANCE_TYPE,
-      LINKED_ACCOUNT,
-      OPERATION,
-      PURCHASE_TYPE,
-      REGION,
-      SERVICE,
-      USAGE_TYPE,
-      USAGE_TYPE_GROUP,
-      RECORD_TYPE,
-      OPERATING_SYSTEM,
-      TENANCY,
-      SCOPE,
-      PLATFORM,
-      SUBSCRIPTION_ID,
-      LEGAL_ENTITY_NAME,
-      DEPLOYMENT_OPTION,
-      DATABASE_ENGINE,
-      CACHE_ENGINE,
-      INSTANCE_TYPE_FAMILY,
-      BILLING_ENTITY,
-      RESERVATION_ID,
-      RIGHTSIZING_TYPE
+    val values = js.Object.freeze(
+      js.Array(
+        AZ,
+        INSTANCE_TYPE,
+        LINKED_ACCOUNT,
+        OPERATION,
+        PURCHASE_TYPE,
+        REGION,
+        SERVICE,
+        USAGE_TYPE,
+        USAGE_TYPE_GROUP,
+        RECORD_TYPE,
+        OPERATING_SYSTEM,
+        TENANCY,
+        SCOPE,
+        PLATFORM,
+        SUBSCRIPTION_ID,
+        LEGAL_ENTITY_NAME,
+        DEPLOYMENT_OPTION,
+        DATABASE_ENGINE,
+        CACHE_ENGINE,
+        INSTANCE_TYPE_FAMILY,
+        BILLING_ENTITY,
+        RESERVATION_ID,
+        RIGHTSIZING_TYPE
+      )
     )
   }
 
@@ -1178,7 +1180,7 @@ package costexplorer {
     val MONTHLY = "MONTHLY"
     val HOURLY  = "HOURLY"
 
-    val values = IndexedSeq(DAILY, MONTHLY, HOURLY)
+    val values = js.Object.freeze(js.Array(DAILY, MONTHLY, HOURLY))
   }
 
   /**
@@ -1227,7 +1229,7 @@ package costexplorer {
     val DIMENSION = "DIMENSION"
     val TAG       = "TAG"
 
-    val values = IndexedSeq(DIMENSION, TAG)
+    val values = js.Object.freeze(js.Array(DIMENSION, TAG))
   }
 
   /**
@@ -1265,7 +1267,7 @@ package costexplorer {
     val THIRTY_DAYS = "THIRTY_DAYS"
     val SIXTY_DAYS  = "SIXTY_DAYS"
 
-    val values = IndexedSeq(SEVEN_DAYS, THIRTY_DAYS, SIXTY_DAYS)
+    val values = js.Object.freeze(js.Array(SEVEN_DAYS, THIRTY_DAYS, SIXTY_DAYS))
   }
 
   object MetricEnum {
@@ -1277,14 +1279,16 @@ package costexplorer {
     val USAGE_QUANTITY          = "USAGE_QUANTITY"
     val NORMALIZED_USAGE_AMOUNT = "NORMALIZED_USAGE_AMOUNT"
 
-    val values = IndexedSeq(
-      BLENDED_COST,
-      UNBLENDED_COST,
-      AMORTIZED_COST,
-      NET_UNBLENDED_COST,
-      NET_AMORTIZED_COST,
-      USAGE_QUANTITY,
-      NORMALIZED_USAGE_AMOUNT
+    val values = js.Object.freeze(
+      js.Array(
+        BLENDED_COST,
+        UNBLENDED_COST,
+        AMORTIZED_COST,
+        NET_UNBLENDED_COST,
+        NET_AMORTIZED_COST,
+        USAGE_QUANTITY,
+        NORMALIZED_USAGE_AMOUNT
+      )
     )
   }
 
@@ -1331,7 +1335,7 @@ package costexplorer {
     val STANDARD    = "STANDARD"
     val CONVERTIBLE = "CONVERTIBLE"
 
-    val values = IndexedSeq(STANDARD, CONVERTIBLE)
+    val values = js.Object.freeze(js.Array(STANDARD, CONVERTIBLE))
   }
 
   object PaymentOptionEnum {
@@ -1342,8 +1346,9 @@ package costexplorer {
     val MEDIUM_UTILIZATION = "MEDIUM_UTILIZATION"
     val HEAVY_UTILIZATION  = "HEAVY_UTILIZATION"
 
-    val values =
-      IndexedSeq(NO_UPFRONT, PARTIAL_UPFRONT, ALL_UPFRONT, LIGHT_UTILIZATION, MEDIUM_UTILIZATION, HEAVY_UTILIZATION)
+    val values = js.Object.freeze(
+      js.Array(NO_UPFRONT, PARTIAL_UPFRONT, ALL_UPFRONT, LIGHT_UTILIZATION, MEDIUM_UTILIZATION, HEAVY_UTILIZATION)
+    )
   }
 
   /**
@@ -1860,7 +1865,7 @@ package costexplorer {
     val TERMINATE = "TERMINATE"
     val MODIFY    = "MODIFY"
 
-    val values = IndexedSeq(TERMINATE, MODIFY)
+    val values = js.Object.freeze(js.Array(TERMINATE, MODIFY))
   }
 
   /**
@@ -1939,7 +1944,7 @@ package costexplorer {
     val ONE_YEAR    = "ONE_YEAR"
     val THREE_YEARS = "THREE_YEARS"
 
-    val values = IndexedSeq(ONE_YEAR, THREE_YEARS)
+    val values = js.Object.freeze(js.Array(ONE_YEAR, THREE_YEARS))
   }
 
   /**
diff --git a/services/cur/src/main/scala/facade/amazonaws/services/CUR.scala b/services/cur/src/main/scala/facade/amazonaws/services/CUR.scala
index 8eb544e2a..e0f86dad4 100644
--- a/services/cur/src/main/scala/facade/amazonaws/services/CUR.scala
+++ b/services/cur/src/main/scala/facade/amazonaws/services/CUR.scala
@@ -72,18 +72,20 @@ package cur {
     val `ap-northeast-3` = "ap-northeast-3"
     val `ap-east-1`      = "ap-east-1"
 
-    val values = IndexedSeq(
-      `us-east-1`,
-      `us-west-1`,
-      `us-west-2`,
-      `eu-central-1`,
-      `eu-west-1`,
-      `ap-southeast-1`,
-      `ap-southeast-2`,
-      `ap-northeast-1`,
-      `eu-north-1`,
-      `ap-northeast-3`,
-      `ap-east-1`
+    val values = js.Object.freeze(
+      js.Array(
+        `us-east-1`,
+        `us-west-1`,
+        `us-west-2`,
+        `eu-central-1`,
+        `eu-west-1`,
+        `ap-southeast-1`,
+        `ap-southeast-2`,
+        `ap-northeast-1`,
+        `eu-north-1`,
+        `ap-northeast-3`,
+        `ap-east-1`
+      )
     )
   }
 
@@ -95,7 +97,7 @@ package cur {
     val QUICKSIGHT = "QUICKSIGHT"
     val ATHENA     = "ATHENA"
 
-    val values = IndexedSeq(REDSHIFT, QUICKSIGHT, ATHENA)
+    val values = js.Object.freeze(js.Array(REDSHIFT, QUICKSIGHT, ATHENA))
   }
 
   /**
@@ -106,7 +108,7 @@ package cur {
     val GZIP    = "GZIP"
     val Parquet = "Parquet"
 
-    val values = IndexedSeq(ZIP, GZIP, Parquet)
+    val values = js.Object.freeze(js.Array(ZIP, GZIP, Parquet))
   }
 
   /**
@@ -311,14 +313,14 @@ package cur {
     val textORcsv = "textORcsv"
     val Parquet   = "Parquet"
 
-    val values = IndexedSeq(textORcsv, Parquet)
+    val values = js.Object.freeze(js.Array(textORcsv, Parquet))
   }
 
   object ReportVersioningEnum {
     val CREATE_NEW_REPORT = "CREATE_NEW_REPORT"
     val OVERWRITE_REPORT  = "OVERWRITE_REPORT"
 
-    val values = IndexedSeq(CREATE_NEW_REPORT, OVERWRITE_REPORT)
+    val values = js.Object.freeze(js.Array(CREATE_NEW_REPORT, OVERWRITE_REPORT))
   }
 
   /**
@@ -327,7 +329,7 @@ package cur {
   object SchemaElementEnum {
     val RESOURCES = "RESOURCES"
 
-    val values = IndexedSeq(RESOURCES)
+    val values = js.Object.freeze(js.Array(RESOURCES))
   }
 
   /**
@@ -337,6 +339,6 @@ package cur {
     val HOURLY = "HOURLY"
     val DAILY  = "DAILY"
 
-    val values = IndexedSeq(HOURLY, DAILY)
+    val values = js.Object.freeze(js.Array(HOURLY, DAILY))
   }
 }
diff --git a/services/datapipeline/src/main/scala/facade/amazonaws/services/DataPipeline.scala b/services/datapipeline/src/main/scala/facade/amazonaws/services/DataPipeline.scala
index a28a8b763..11ebefb11 100644
--- a/services/datapipeline/src/main/scala/facade/amazonaws/services/DataPipeline.scala
+++ b/services/datapipeline/src/main/scala/facade/amazonaws/services/DataPipeline.scala
@@ -621,7 +621,7 @@ package datapipeline {
     val GE      = "GE"
     val BETWEEN = "BETWEEN"
 
-    val values = IndexedSeq(EQ, REF_EQ, LE, GE, BETWEEN)
+    val values = js.Object.freeze(js.Array(EQ, REF_EQ, LE, GE, BETWEEN))
   }
 
   /**
@@ -1245,7 +1245,7 @@ package datapipeline {
     val FAILED   = "FAILED"
     val FALSE    = "FALSE"
 
-    val values = IndexedSeq(FINISHED, FAILED, FALSE)
+    val values = js.Object.freeze(js.Array(FINISHED, FAILED, FALSE))
   }
 
   /**
diff --git a/services/datasync/src/main/scala/facade/amazonaws/services/DataSync.scala b/services/datasync/src/main/scala/facade/amazonaws/services/DataSync.scala
index ffdd9afed..751858ca8 100644
--- a/services/datasync/src/main/scala/facade/amazonaws/services/DataSync.scala
+++ b/services/datasync/src/main/scala/facade/amazonaws/services/DataSync.scala
@@ -190,14 +190,14 @@ package datasync {
     val ONLINE  = "ONLINE"
     val OFFLINE = "OFFLINE"
 
-    val values = IndexedSeq(ONLINE, OFFLINE)
+    val values = js.Object.freeze(js.Array(ONLINE, OFFLINE))
   }
 
   object AtimeEnum {
     val NONE        = "NONE"
     val BEST_EFFORT = "BEST_EFFORT"
 
-    val values = IndexedSeq(NONE, BEST_EFFORT)
+    val values = js.Object.freeze(js.Array(NONE, BEST_EFFORT))
   }
 
   @js.native
@@ -995,7 +995,7 @@ package datasync {
     val PUBLIC       = "PUBLIC"
     val PRIVATE_LINK = "PRIVATE_LINK"
 
-    val values = IndexedSeq(PUBLIC, PRIVATE_LINK)
+    val values = js.Object.freeze(js.Array(PUBLIC, PRIVATE_LINK))
   }
 
   /**
@@ -1022,7 +1022,7 @@ package datasync {
   object FilterTypeEnum {
     val SIMPLE_PATTERN = "SIMPLE_PATTERN"
 
-    val values = IndexedSeq(SIMPLE_PATTERN)
+    val values = js.Object.freeze(js.Array(SIMPLE_PATTERN))
   }
 
   object GidEnum {
@@ -1031,7 +1031,7 @@ package datasync {
     val NAME      = "NAME"
     val BOTH      = "BOTH"
 
-    val values = IndexedSeq(NONE, INT_VALUE, NAME, BOTH)
+    val values = js.Object.freeze(js.Array(NONE, INT_VALUE, NAME, BOTH))
   }
 
   @js.native
@@ -1250,7 +1250,7 @@ package datasync {
     val NONE     = "NONE"
     val PRESERVE = "PRESERVE"
 
-    val values = IndexedSeq(NONE, PRESERVE)
+    val values = js.Object.freeze(js.Array(NONE, PRESERVE))
   }
 
   /**
@@ -1277,7 +1277,7 @@ package datasync {
     val NFS4_0    = "NFS4_0"
     val NFS4_1    = "NFS4_1"
 
-    val values = IndexedSeq(AUTOMATIC, NFS3, NFS4_0, NFS4_1)
+    val values = js.Object.freeze(js.Array(AUTOMATIC, NFS3, NFS4_0, NFS4_1))
   }
 
   /**
@@ -1348,7 +1348,7 @@ package datasync {
     val SUCCESS = "SUCCESS"
     val ERROR   = "ERROR"
 
-    val values = IndexedSeq(PENDING, SUCCESS, ERROR)
+    val values = js.Object.freeze(js.Array(PENDING, SUCCESS, ERROR))
   }
 
   object PosixPermissionsEnum {
@@ -1356,21 +1356,21 @@ package datasync {
     val BEST_EFFORT = "BEST_EFFORT"
     val PRESERVE    = "PRESERVE"
 
-    val values = IndexedSeq(NONE, BEST_EFFORT, PRESERVE)
+    val values = js.Object.freeze(js.Array(NONE, BEST_EFFORT, PRESERVE))
   }
 
   object PreserveDeletedFilesEnum {
     val PRESERVE = "PRESERVE"
     val REMOVE   = "REMOVE"
 
-    val values = IndexedSeq(PRESERVE, REMOVE)
+    val values = js.Object.freeze(js.Array(PRESERVE, REMOVE))
   }
 
   object PreserveDevicesEnum {
     val NONE     = "NONE"
     val PRESERVE = "PRESERVE"
 
-    val values = IndexedSeq(NONE, PRESERVE)
+    val values = js.Object.freeze(js.Array(NONE, PRESERVE))
   }
 
   /**
@@ -1444,7 +1444,7 @@ package datasync {
     val SMB2      = "SMB2"
     val SMB3      = "SMB3"
 
-    val values = IndexedSeq(AUTOMATIC, SMB2, SMB3)
+    val values = js.Object.freeze(js.Array(AUTOMATIC, SMB2, SMB3))
   }
 
   @js.native
@@ -1608,7 +1608,7 @@ package datasync {
     val SUCCESS      = "SUCCESS"
     val ERROR        = "ERROR"
 
-    val values = IndexedSeq(LAUNCHING, PREPARING, TRANSFERRING, VERIFYING, SUCCESS, ERROR)
+    val values = js.Object.freeze(js.Array(LAUNCHING, PREPARING, TRANSFERRING, VERIFYING, SUCCESS, ERROR))
   }
 
   /**
@@ -1641,7 +1641,7 @@ package datasync {
     val RUNNING     = "RUNNING"
     val UNAVAILABLE = "UNAVAILABLE"
 
-    val values = IndexedSeq(AVAILABLE, CREATING, RUNNING, UNAVAILABLE)
+    val values = js.Object.freeze(js.Array(AVAILABLE, CREATING, RUNNING, UNAVAILABLE))
   }
 
   object UidEnum {
@@ -1650,7 +1650,7 @@ package datasync {
     val NAME      = "NAME"
     val BOTH      = "BOTH"
 
-    val values = IndexedSeq(NONE, INT_VALUE, NAME, BOTH)
+    val values = js.Object.freeze(js.Array(NONE, INT_VALUE, NAME, BOTH))
   }
 
   @js.native
@@ -1765,6 +1765,6 @@ package datasync {
     val POINT_IN_TIME_CONSISTENT = "POINT_IN_TIME_CONSISTENT"
     val NONE                     = "NONE"
 
-    val values = IndexedSeq(POINT_IN_TIME_CONSISTENT, NONE)
+    val values = js.Object.freeze(js.Array(POINT_IN_TIME_CONSISTENT, NONE))
   }
 }
diff --git a/services/dax/src/main/scala/facade/amazonaws/services/DAX.scala b/services/dax/src/main/scala/facade/amazonaws/services/DAX.scala
index 32aea7ceb..d18194a9d 100644
--- a/services/dax/src/main/scala/facade/amazonaws/services/DAX.scala
+++ b/services/dax/src/main/scala/facade/amazonaws/services/DAX.scala
@@ -125,7 +125,7 @@ package dax {
     val IMMEDIATE       = "IMMEDIATE"
     val REQUIRES_REBOOT = "REQUIRES_REBOOT"
 
-    val values = IndexedSeq(IMMEDIATE, REQUIRES_REBOOT)
+    val values = js.Object.freeze(js.Array(IMMEDIATE, REQUIRES_REBOOT))
   }
 
   /**
@@ -811,7 +811,7 @@ package dax {
     val FALSE       = "FALSE"
     val CONDITIONAL = "CONDITIONAL"
 
-    val values = IndexedSeq(TRUE, FALSE, CONDITIONAL)
+    val values = js.Object.freeze(js.Array(TRUE, FALSE, CONDITIONAL))
   }
 
   @js.native
@@ -1042,7 +1042,7 @@ package dax {
     val DEFAULT            = "DEFAULT"
     val NODE_TYPE_SPECIFIC = "NODE_TYPE_SPECIFIC"
 
-    val values = IndexedSeq(DEFAULT, NODE_TYPE_SPECIFIC)
+    val values = js.Object.freeze(js.Array(DEFAULT, NODE_TYPE_SPECIFIC))
   }
 
   @js.native
@@ -1124,7 +1124,7 @@ package dax {
     val DISABLING = "DISABLING"
     val DISABLED  = "DISABLED"
 
-    val values = IndexedSeq(ENABLING, ENABLED, DISABLING, DISABLED)
+    val values = js.Object.freeze(js.Array(ENABLING, ENABLED, DISABLING, DISABLED))
   }
 
   /**
@@ -1153,7 +1153,7 @@ package dax {
     val PARAMETER_GROUP = "PARAMETER_GROUP"
     val SUBNET_GROUP    = "SUBNET_GROUP"
 
-    val values = IndexedSeq(CLUSTER, PARAMETER_GROUP, SUBNET_GROUP)
+    val values = js.Object.freeze(js.Array(CLUSTER, PARAMETER_GROUP, SUBNET_GROUP))
   }
 
   /**
diff --git a/services/devicefarm/src/main/scala/facade/amazonaws/services/DeviceFarm.scala b/services/devicefarm/src/main/scala/facade/amazonaws/services/DeviceFarm.scala
index 5ee62fc3e..d3b420f12 100644
--- a/services/devicefarm/src/main/scala/facade/amazonaws/services/DeviceFarm.scala
+++ b/services/devicefarm/src/main/scala/facade/amazonaws/services/DeviceFarm.scala
@@ -397,7 +397,7 @@ package devicefarm {
     val FILE       = "FILE"
     val LOG        = "LOG"
 
-    val values = IndexedSeq(SCREENSHOT, FILE, LOG)
+    val values = js.Object.freeze(js.Array(SCREENSHOT, FILE, LOG))
   }
 
   object ArtifactTypeEnum {
@@ -430,35 +430,37 @@ package devicefarm {
     val CUSTOMER_ARTIFACT_LOG    = "CUSTOMER_ARTIFACT_LOG"
     val TESTSPEC_OUTPUT          = "TESTSPEC_OUTPUT"
 
-    val values = IndexedSeq(
-      UNKNOWN,
-      SCREENSHOT,
-      DEVICE_LOG,
-      MESSAGE_LOG,
-      VIDEO_LOG,
-      RESULT_LOG,
-      SERVICE_LOG,
-      WEBKIT_LOG,
-      INSTRUMENTATION_OUTPUT,
-      EXERCISER_MONKEY_OUTPUT,
-      CALABASH_JSON_OUTPUT,
-      CALABASH_PRETTY_OUTPUT,
-      CALABASH_STANDARD_OUTPUT,
-      CALABASH_JAVA_XML_OUTPUT,
-      AUTOMATION_OUTPUT,
-      APPIUM_SERVER_OUTPUT,
-      APPIUM_JAVA_OUTPUT,
-      APPIUM_JAVA_XML_OUTPUT,
-      APPIUM_PYTHON_OUTPUT,
-      APPIUM_PYTHON_XML_OUTPUT,
-      EXPLORER_EVENT_LOG,
-      EXPLORER_SUMMARY_LOG,
-      APPLICATION_CRASH_REPORT,
-      XCTEST_LOG,
-      VIDEO,
-      CUSTOMER_ARTIFACT,
-      CUSTOMER_ARTIFACT_LOG,
-      TESTSPEC_OUTPUT
+    val values = js.Object.freeze(
+      js.Array(
+        UNKNOWN,
+        SCREENSHOT,
+        DEVICE_LOG,
+        MESSAGE_LOG,
+        VIDEO_LOG,
+        RESULT_LOG,
+        SERVICE_LOG,
+        WEBKIT_LOG,
+        INSTRUMENTATION_OUTPUT,
+        EXERCISER_MONKEY_OUTPUT,
+        CALABASH_JSON_OUTPUT,
+        CALABASH_PRETTY_OUTPUT,
+        CALABASH_STANDARD_OUTPUT,
+        CALABASH_JAVA_XML_OUTPUT,
+        AUTOMATION_OUTPUT,
+        APPIUM_SERVER_OUTPUT,
+        APPIUM_JAVA_OUTPUT,
+        APPIUM_JAVA_XML_OUTPUT,
+        APPIUM_PYTHON_OUTPUT,
+        APPIUM_PYTHON_XML_OUTPUT,
+        EXPLORER_EVENT_LOG,
+        EXPLORER_SUMMARY_LOG,
+        APPLICATION_CRASH_REPORT,
+        XCTEST_LOG,
+        VIDEO,
+        CUSTOMER_ARTIFACT,
+        CUSTOMER_ARTIFACT_LOG,
+        TESTSPEC_OUTPUT
+      )
     )
   }
 
@@ -466,7 +468,7 @@ package devicefarm {
     val METERED   = "METERED"
     val UNMETERED = "UNMETERED"
 
-    val values = IndexedSeq(METERED, UNMETERED)
+    val values = js.Object.freeze(js.Array(METERED, UNMETERED))
   }
 
   /**
@@ -917,7 +919,7 @@ package devicefarm {
   object CurrencyCodeEnum {
     val USD = "USD"
 
-    val values = IndexedSeq(USD)
+    val values = js.Object.freeze(js.Array(USD))
   }
 
   /**
@@ -1301,20 +1303,22 @@ package devicefarm {
     val MODEL                 = "MODEL"
     val AVAILABILITY          = "AVAILABILITY"
 
-    val values = IndexedSeq(
-      ARN,
-      PLATFORM,
-      FORM_FACTOR,
-      MANUFACTURER,
-      REMOTE_ACCESS_ENABLED,
-      REMOTE_DEBUG_ENABLED,
-      APPIUM_VERSION,
-      INSTANCE_ARN,
-      INSTANCE_LABELS,
-      FLEET_TYPE,
-      OS_VERSION,
-      MODEL,
-      AVAILABILITY
+    val values = js.Object.freeze(
+      js.Array(
+        ARN,
+        PLATFORM,
+        FORM_FACTOR,
+        MANUFACTURER,
+        REMOTE_ACCESS_ENABLED,
+        REMOTE_DEBUG_ENABLED,
+        APPIUM_VERSION,
+        INSTANCE_ARN,
+        INSTANCE_LABELS,
+        FLEET_TYPE,
+        OS_VERSION,
+        MODEL,
+        AVAILABILITY
+      )
     )
   }
 
@@ -1324,7 +1328,7 @@ package devicefarm {
     val AVAILABLE               = "AVAILABLE"
     val HIGHLY_AVAILABLE        = "HIGHLY_AVAILABLE"
 
-    val values = IndexedSeq(TEMPORARY_NOT_AVAILABLE, BUSY, AVAILABLE, HIGHLY_AVAILABLE)
+    val values = js.Object.freeze(js.Array(TEMPORARY_NOT_AVAILABLE, BUSY, AVAILABLE, HIGHLY_AVAILABLE))
   }
 
   /**
@@ -1366,19 +1370,21 @@ package devicefarm {
     val INSTANCE_LABELS       = "INSTANCE_LABELS"
     val FLEET_TYPE            = "FLEET_TYPE"
 
-    val values = IndexedSeq(
-      ARN,
-      PLATFORM,
-      OS_VERSION,
-      MODEL,
-      AVAILABILITY,
-      FORM_FACTOR,
-      MANUFACTURER,
-      REMOTE_ACCESS_ENABLED,
-      REMOTE_DEBUG_ENABLED,
-      INSTANCE_ARN,
-      INSTANCE_LABELS,
-      FLEET_TYPE
+    val values = js.Object.freeze(
+      js.Array(
+        ARN,
+        PLATFORM,
+        OS_VERSION,
+        MODEL,
+        AVAILABILITY,
+        FORM_FACTOR,
+        MANUFACTURER,
+        REMOTE_ACCESS_ENABLED,
+        REMOTE_DEBUG_ENABLED,
+        INSTANCE_ARN,
+        INSTANCE_LABELS,
+        FLEET_TYPE
+      )
     )
   }
 
@@ -1386,7 +1392,7 @@ package devicefarm {
     val PHONE  = "PHONE"
     val TABLET = "TABLET"
 
-    val values = IndexedSeq(PHONE, TABLET)
+    val values = js.Object.freeze(js.Array(PHONE, TABLET))
   }
 
   /**
@@ -1450,7 +1456,7 @@ package devicefarm {
     val ANDROID = "ANDROID"
     val IOS     = "IOS"
 
-    val values = IndexedSeq(ANDROID, IOS)
+    val values = js.Object.freeze(js.Array(ANDROID, IOS))
   }
 
   /**
@@ -1514,7 +1520,7 @@ package devicefarm {
     val CURATED = "CURATED"
     val PRIVATE = "PRIVATE"
 
-    val values = IndexedSeq(CURATED, PRIVATE)
+    val values = js.Object.freeze(js.Array(CURATED, PRIVATE))
   }
 
   /**
@@ -1603,14 +1609,14 @@ package devicefarm {
     val ERRORED = "ERRORED"
     val STOPPED = "STOPPED"
 
-    val values = IndexedSeq(PENDING, PASSED, WARNED, FAILED, SKIPPED, ERRORED, STOPPED)
+    val values = js.Object.freeze(js.Array(PENDING, PASSED, WARNED, FAILED, SKIPPED, ERRORED, STOPPED))
   }
 
   object ExecutionResultCodeEnum {
     val PARSING_FAILED            = "PARSING_FAILED"
     val VPC_ENDPOINT_SETUP_FAILED = "VPC_ENDPOINT_SETUP_FAILED"
 
-    val values = IndexedSeq(PARSING_FAILED, VPC_ENDPOINT_SETUP_FAILED)
+    val values = js.Object.freeze(js.Array(PARSING_FAILED, VPC_ENDPOINT_SETUP_FAILED))
   }
 
   object ExecutionStatusEnum {
@@ -1624,16 +1630,18 @@ package devicefarm {
     val COMPLETED           = "COMPLETED"
     val STOPPING            = "STOPPING"
 
-    val values = IndexedSeq(
-      PENDING,
-      PENDING_CONCURRENCY,
-      PENDING_DEVICE,
-      PROCESSING,
-      SCHEDULING,
-      PREPARING,
-      RUNNING,
-      COMPLETED,
-      STOPPING
+    val values = js.Object.freeze(
+      js.Array(
+        PENDING,
+        PENDING_CONCURRENCY,
+        PENDING_DEVICE,
+        PROCESSING,
+        SCHEDULING,
+        PREPARING,
+        RUNNING,
+        COMPLETED,
+        STOPPING
+      )
     )
   }
 
@@ -2338,7 +2346,7 @@ package devicefarm {
     val AVAILABLE     = "AVAILABLE"
     val NOT_AVAILABLE = "NOT_AVAILABLE"
 
-    val values = IndexedSeq(IN_USE, PREPARING, AVAILABLE, NOT_AVAILABLE)
+    val values = js.Object.freeze(js.Array(IN_USE, PREPARING, AVAILABLE, NOT_AVAILABLE))
   }
 
   object InteractionModeEnum {
@@ -2346,7 +2354,7 @@ package devicefarm {
     val NO_VIDEO    = "NO_VIDEO"
     val VIDEO_ONLY  = "VIDEO_ONLY"
 
-    val values = IndexedSeq(INTERACTIVE, NO_VIDEO, VIDEO_ONLY)
+    val values = js.Object.freeze(js.Array(INTERACTIVE, NO_VIDEO, VIDEO_ONLY))
   }
 
   /**
@@ -3337,7 +3345,7 @@ package devicefarm {
     val CURATED = "CURATED"
     val PRIVATE = "PRIVATE"
 
-    val values = IndexedSeq(CURATED, PRIVATE)
+    val values = js.Object.freeze(js.Array(CURATED, PRIVATE))
   }
 
   /**
@@ -3453,13 +3461,13 @@ package devicefarm {
     val RENEW    = "RENEW"
     val SYSTEM   = "SYSTEM"
 
-    val values = IndexedSeq(PURCHASE, RENEW, SYSTEM)
+    val values = js.Object.freeze(js.Array(PURCHASE, RENEW, SYSTEM))
   }
 
   object OfferingTypeEnum {
     val RECURRING = "RECURRING"
 
-    val values = IndexedSeq(RECURRING)
+    val values = js.Object.freeze(js.Array(RECURRING))
   }
 
   /**
@@ -3639,7 +3647,7 @@ package devicefarm {
   object RecurringChargeFrequencyEnum {
     val MONTHLY = "MONTHLY"
 
-    val values = IndexedSeq(MONTHLY)
+    val values = js.Object.freeze(js.Array(MONTHLY))
   }
 
   /**
@@ -3814,8 +3822,9 @@ package devicefarm {
     val NOT_IN                 = "NOT_IN"
     val CONTAINS               = "CONTAINS"
 
-    val values =
-      IndexedSeq(EQUALS, LESS_THAN, LESS_THAN_OR_EQUALS, GREATER_THAN, GREATER_THAN_OR_EQUALS, IN, NOT_IN, CONTAINS)
+    val values = js.Object.freeze(
+      js.Array(EQUALS, LESS_THAN, LESS_THAN_OR_EQUALS, GREATER_THAN, GREATER_THAN_OR_EQUALS, IN, NOT_IN, CONTAINS)
+    )
   }
 
   /**
@@ -3969,24 +3978,26 @@ package devicefarm {
     val OPENGL_AVG_DRAWTIME = "OPENGL_AVG_DRAWTIME"
     val OPENGL_MAX_DRAWTIME = "OPENGL_MAX_DRAWTIME"
 
-    val values = IndexedSeq(
-      CPU,
-      MEMORY,
-      THREADS,
-      RX_RATE,
-      TX_RATE,
-      RX,
-      TX,
-      NATIVE_FRAMES,
-      NATIVE_FPS,
-      NATIVE_MIN_DRAWTIME,
-      NATIVE_AVG_DRAWTIME,
-      NATIVE_MAX_DRAWTIME,
-      OPENGL_FRAMES,
-      OPENGL_FPS,
-      OPENGL_MIN_DRAWTIME,
-      OPENGL_AVG_DRAWTIME,
-      OPENGL_MAX_DRAWTIME
+    val values = js.Object.freeze(
+      js.Array(
+        CPU,
+        MEMORY,
+        THREADS,
+        RX_RATE,
+        TX_RATE,
+        RX,
+        TX,
+        NATIVE_FRAMES,
+        NATIVE_FPS,
+        NATIVE_MIN_DRAWTIME,
+        NATIVE_AVG_DRAWTIME,
+        NATIVE_MAX_DRAWTIME,
+        OPENGL_FRAMES,
+        OPENGL_FPS,
+        OPENGL_MIN_DRAWTIME,
+        OPENGL_AVG_DRAWTIME,
+        OPENGL_MAX_DRAWTIME
+      )
     )
   }
 
@@ -4407,28 +4418,30 @@ package devicefarm {
     val REMOTE_ACCESS_RECORD    = "REMOTE_ACCESS_RECORD"
     val REMOTE_ACCESS_REPLAY    = "REMOTE_ACCESS_REPLAY"
 
-    val values = IndexedSeq(
-      BUILTIN_FUZZ,
-      BUILTIN_EXPLORER,
-      WEB_PERFORMANCE_PROFILE,
-      APPIUM_JAVA_JUNIT,
-      APPIUM_JAVA_TESTNG,
-      APPIUM_PYTHON,
-      APPIUM_NODE,
-      APPIUM_RUBY,
-      APPIUM_WEB_JAVA_JUNIT,
-      APPIUM_WEB_JAVA_TESTNG,
-      APPIUM_WEB_PYTHON,
-      APPIUM_WEB_NODE,
-      APPIUM_WEB_RUBY,
-      CALABASH,
-      INSTRUMENTATION,
-      UIAUTOMATION,
-      UIAUTOMATOR,
-      XCTEST,
-      XCTEST_UI,
-      REMOTE_ACCESS_RECORD,
-      REMOTE_ACCESS_REPLAY
+    val values = js.Object.freeze(
+      js.Array(
+        BUILTIN_FUZZ,
+        BUILTIN_EXPLORER,
+        WEB_PERFORMANCE_PROFILE,
+        APPIUM_JAVA_JUNIT,
+        APPIUM_JAVA_TESTNG,
+        APPIUM_PYTHON,
+        APPIUM_NODE,
+        APPIUM_RUBY,
+        APPIUM_WEB_JAVA_JUNIT,
+        APPIUM_WEB_JAVA_TESTNG,
+        APPIUM_WEB_PYTHON,
+        APPIUM_WEB_NODE,
+        APPIUM_WEB_RUBY,
+        CALABASH,
+        INSTRUMENTATION,
+        UIAUTOMATION,
+        UIAUTOMATOR,
+        XCTEST,
+        XCTEST_UI,
+        REMOTE_ACCESS_RECORD,
+        REMOTE_ACCESS_REPLAY
+      )
     )
   }
 
@@ -4891,7 +4904,7 @@ package devicefarm {
     val CURATED = "CURATED"
     val PRIVATE = "PRIVATE"
 
-    val values = IndexedSeq(CURATED, PRIVATE)
+    val values = js.Object.freeze(js.Array(CURATED, PRIVATE))
   }
 
   object UploadStatusEnum {
@@ -4900,7 +4913,7 @@ package devicefarm {
     val SUCCEEDED   = "SUCCEEDED"
     val FAILED      = "FAILED"
 
-    val values = IndexedSeq(INITIALIZED, PROCESSING, SUCCEEDED, FAILED)
+    val values = js.Object.freeze(js.Array(INITIALIZED, PROCESSING, SUCCEEDED, FAILED))
   }
 
   object UploadTypeEnum {
@@ -4937,39 +4950,41 @@ package devicefarm {
     val INSTRUMENTATION_TEST_SPEC           = "INSTRUMENTATION_TEST_SPEC"
     val XCTEST_UI_TEST_SPEC                 = "XCTEST_UI_TEST_SPEC"
 
-    val values = IndexedSeq(
-      ANDROID_APP,
-      IOS_APP,
-      WEB_APP,
-      EXTERNAL_DATA,
-      APPIUM_JAVA_JUNIT_TEST_PACKAGE,
-      APPIUM_JAVA_TESTNG_TEST_PACKAGE,
-      APPIUM_PYTHON_TEST_PACKAGE,
-      APPIUM_NODE_TEST_PACKAGE,
-      APPIUM_RUBY_TEST_PACKAGE,
-      APPIUM_WEB_JAVA_JUNIT_TEST_PACKAGE,
-      APPIUM_WEB_JAVA_TESTNG_TEST_PACKAGE,
-      APPIUM_WEB_PYTHON_TEST_PACKAGE,
-      APPIUM_WEB_NODE_TEST_PACKAGE,
-      APPIUM_WEB_RUBY_TEST_PACKAGE,
-      CALABASH_TEST_PACKAGE,
-      INSTRUMENTATION_TEST_PACKAGE,
-      UIAUTOMATION_TEST_PACKAGE,
-      UIAUTOMATOR_TEST_PACKAGE,
-      XCTEST_TEST_PACKAGE,
-      XCTEST_UI_TEST_PACKAGE,
-      APPIUM_JAVA_JUNIT_TEST_SPEC,
-      APPIUM_JAVA_TESTNG_TEST_SPEC,
-      APPIUM_PYTHON_TEST_SPEC,
-      APPIUM_NODE_TEST_SPEC,
-      APPIUM_RUBY_TEST_SPEC,
-      APPIUM_WEB_JAVA_JUNIT_TEST_SPEC,
-      APPIUM_WEB_JAVA_TESTNG_TEST_SPEC,
-      APPIUM_WEB_PYTHON_TEST_SPEC,
-      APPIUM_WEB_NODE_TEST_SPEC,
-      APPIUM_WEB_RUBY_TEST_SPEC,
-      INSTRUMENTATION_TEST_SPEC,
-      XCTEST_UI_TEST_SPEC
+    val values = js.Object.freeze(
+      js.Array(
+        ANDROID_APP,
+        IOS_APP,
+        WEB_APP,
+        EXTERNAL_DATA,
+        APPIUM_JAVA_JUNIT_TEST_PACKAGE,
+        APPIUM_JAVA_TESTNG_TEST_PACKAGE,
+        APPIUM_PYTHON_TEST_PACKAGE,
+        APPIUM_NODE_TEST_PACKAGE,
+        APPIUM_RUBY_TEST_PACKAGE,
+        APPIUM_WEB_JAVA_JUNIT_TEST_PACKAGE,
+        APPIUM_WEB_JAVA_TESTNG_TEST_PACKAGE,
+        APPIUM_WEB_PYTHON_TEST_PACKAGE,
+        APPIUM_WEB_NODE_TEST_PACKAGE,
+        APPIUM_WEB_RUBY_TEST_PACKAGE,
+        CALABASH_TEST_PACKAGE,
+        INSTRUMENTATION_TEST_PACKAGE,
+        UIAUTOMATION_TEST_PACKAGE,
+        UIAUTOMATOR_TEST_PACKAGE,
+        XCTEST_TEST_PACKAGE,
+        XCTEST_UI_TEST_PACKAGE,
+        APPIUM_JAVA_JUNIT_TEST_SPEC,
+        APPIUM_JAVA_TESTNG_TEST_SPEC,
+        APPIUM_PYTHON_TEST_SPEC,
+        APPIUM_NODE_TEST_SPEC,
+        APPIUM_RUBY_TEST_SPEC,
+        APPIUM_WEB_JAVA_JUNIT_TEST_SPEC,
+        APPIUM_WEB_JAVA_TESTNG_TEST_SPEC,
+        APPIUM_WEB_PYTHON_TEST_SPEC,
+        APPIUM_WEB_NODE_TEST_SPEC,
+        APPIUM_WEB_RUBY_TEST_SPEC,
+        INSTRUMENTATION_TEST_SPEC,
+        XCTEST_UI_TEST_SPEC
+      )
     )
   }
 
diff --git a/services/directconnect/src/main/scala/facade/amazonaws/services/DirectConnect.scala b/services/directconnect/src/main/scala/facade/amazonaws/services/DirectConnect.scala
index ed06e91f0..9d449a555 100644
--- a/services/directconnect/src/main/scala/facade/amazonaws/services/DirectConnect.scala
+++ b/services/directconnect/src/main/scala/facade/amazonaws/services/DirectConnect.scala
@@ -377,7 +377,7 @@ package directconnect {
     val ipv4 = "ipv4"
     val ipv6 = "ipv6"
 
-    val values = IndexedSeq(ipv4, ipv6)
+    val values = js.Object.freeze(js.Array(ipv4, ipv6))
   }
 
   @js.native
@@ -661,7 +661,7 @@ package directconnect {
     val deleting  = "deleting"
     val deleted   = "deleted"
 
-    val values = IndexedSeq(verifying, pending, available, deleting, deleted)
+    val values = js.Object.freeze(js.Array(verifying, pending, available, deleting, deleted))
   }
 
   object BGPStatusEnum {
@@ -669,7 +669,7 @@ package directconnect {
     val down    = "down"
     val unknown = "unknown"
 
-    val values = IndexedSeq(up, down, unknown)
+    val values = js.Object.freeze(js.Array(up, down, unknown))
   }
 
   @js.native
@@ -883,7 +883,8 @@ package directconnect {
     val rejected  = "rejected"
     val unknown   = "unknown"
 
-    val values = IndexedSeq(ordering, requested, pending, available, down, deleting, deleted, rejected, unknown)
+    val values =
+      js.Object.freeze(js.Array(ordering, requested, pending, available, down, deleting, deleted, rejected, unknown))
   }
 
   @js.native
@@ -2010,7 +2011,7 @@ package directconnect {
     val accepted  = "accepted"
     val deleted   = "deleted"
 
-    val values = IndexedSeq(requested, accepted, deleted)
+    val values = js.Object.freeze(js.Array(requested, accepted, deleted))
   }
 
   object DirectConnectGatewayAssociationStateEnum {
@@ -2020,7 +2021,7 @@ package directconnect {
     val disassociated  = "disassociated"
     val updating       = "updating"
 
-    val values = IndexedSeq(associating, associated, disassociating, disassociated, updating)
+    val values = js.Object.freeze(js.Array(associating, associated, disassociating, disassociated, updating))
   }
 
   /**
@@ -2067,14 +2068,14 @@ package directconnect {
     val detaching = "detaching"
     val detached  = "detached"
 
-    val values = IndexedSeq(attaching, attached, detaching, detached)
+    val values = js.Object.freeze(js.Array(attaching, attached, detaching, detached))
   }
 
   object DirectConnectGatewayAttachmentTypeEnum {
     val TransitVirtualInterface = "TransitVirtualInterface"
     val PrivateVirtualInterface = "PrivateVirtualInterface"
 
-    val values = IndexedSeq(TransitVirtualInterface, PrivateVirtualInterface)
+    val values = js.Object.freeze(js.Array(TransitVirtualInterface, PrivateVirtualInterface))
   }
 
   object DirectConnectGatewayStateEnum {
@@ -2083,7 +2084,7 @@ package directconnect {
     val deleting  = "deleting"
     val deleted   = "deleted"
 
-    val values = IndexedSeq(pending, available, deleting, deleted)
+    val values = js.Object.freeze(js.Array(pending, available, deleting, deleted))
   }
 
   @js.native
@@ -2110,7 +2111,7 @@ package directconnect {
     val virtualPrivateGateway = "virtualPrivateGateway"
     val transitGateway        = "transitGateway"
 
-    val values = IndexedSeq(virtualPrivateGateway, transitGateway)
+    val values = js.Object.freeze(js.Array(virtualPrivateGateway, transitGateway))
   }
 
   object HasLogicalRedundancyEnum {
@@ -2118,7 +2119,7 @@ package directconnect {
     val yes     = "yes"
     val no      = "no"
 
-    val values = IndexedSeq(unknown, yes, no)
+    val values = js.Object.freeze(js.Array(unknown, yes, no))
   }
 
   /**
@@ -2184,7 +2185,7 @@ package directconnect {
     val deleted   = "deleted"
     val unknown   = "unknown"
 
-    val values = IndexedSeq(requested, pending, available, down, deleting, deleted, unknown)
+    val values = js.Object.freeze(js.Array(requested, pending, available, down, deleting, deleted, unknown))
   }
 
   @js.native
@@ -2274,7 +2275,7 @@ package directconnect {
     val deleted   = "deleted"
     val unknown   = "unknown"
 
-    val values = IndexedSeq(requested, pending, available, down, deleting, deleted, unknown)
+    val values = js.Object.freeze(js.Array(requested, pending, available, down, deleting, deleted, unknown))
   }
 
   @js.native
@@ -2316,7 +2317,7 @@ package directconnect {
   object LoaContentTypeEnum {
     val `application/pdf` = "application/pdf"
 
-    val values = IndexedSeq(`application/pdf`)
+    val values = js.Object.freeze(js.Array(`application/pdf`))
   }
 
   /**
@@ -3005,7 +3006,8 @@ package directconnect {
     val rejected   = "rejected"
     val unknown    = "unknown"
 
-    val values = IndexedSeq(confirming, verifying, pending, available, down, deleting, deleted, rejected, unknown)
+    val values =
+      js.Object.freeze(js.Array(confirming, verifying, pending, available, down, deleting, deleted, rejected, unknown))
   }
 
   @js.native
diff --git a/services/directoryservice/src/main/scala/facade/amazonaws/services/DirectoryService.scala b/services/directoryservice/src/main/scala/facade/amazonaws/services/DirectoryService.scala
index 3051d19ca..e2e750fe4 100644
--- a/services/directoryservice/src/main/scala/facade/amazonaws/services/DirectoryService.scala
+++ b/services/directoryservice/src/main/scala/facade/amazonaws/services/DirectoryService.scala
@@ -1634,7 +1634,7 @@ package directoryservice {
     val Enterprise = "Enterprise"
     val Standard   = "Standard"
 
-    val values = IndexedSeq(Enterprise, Standard)
+    val values = js.Object.freeze(js.Array(Enterprise, Standard))
   }
 
   /**
@@ -1695,7 +1695,7 @@ package directoryservice {
     val Small = "Small"
     val Large = "Large"
 
-    val values = IndexedSeq(Small, Large)
+    val values = js.Object.freeze(js.Array(Small, Large))
   }
 
   object DirectoryStageEnum {
@@ -1711,18 +1711,20 @@ package directoryservice {
     val Deleted       = "Deleted"
     val Failed        = "Failed"
 
-    val values = IndexedSeq(
-      Requested,
-      Creating,
-      Created,
-      Active,
-      Inoperable,
-      Impaired,
-      Restoring,
-      RestoreFailed,
-      Deleting,
-      Deleted,
-      Failed
+    val values = js.Object.freeze(
+      js.Array(
+        Requested,
+        Creating,
+        Created,
+        Active,
+        Inoperable,
+        Impaired,
+        Restoring,
+        RestoreFailed,
+        Deleting,
+        Deleted,
+        Failed
+      )
     )
   }
 
@@ -1732,7 +1734,7 @@ package directoryservice {
     val MicrosoftAD       = "MicrosoftAD"
     val SharedMicrosoftAD = "SharedMicrosoftAD"
 
-    val values = IndexedSeq(SimpleAD, ADConnector, MicrosoftAD, SharedMicrosoftAD)
+    val values = js.Object.freeze(js.Array(SimpleAD, ADConnector, MicrosoftAD, SharedMicrosoftAD))
   }
 
   /**
@@ -1915,7 +1917,7 @@ package directoryservice {
     val Deleted   = "Deleted"
     val Failed    = "Failed"
 
-    val values = IndexedSeq(Creating, Active, Impaired, Restoring, Deleting, Deleted, Failed)
+    val values = js.Object.freeze(js.Array(Creating, Active, Impaired, Restoring, Deleting, Deleted, Failed))
   }
 
   /**
@@ -2160,7 +2162,7 @@ package directoryservice {
     val AddFailed    = "AddFailed"
     val RemoveFailed = "RemoveFailed"
 
-    val values = IndexedSeq(Adding, Added, Removing, Removed, AddFailed, RemoveFailed)
+    val values = js.Object.freeze(js.Array(Adding, Added, Removing, Removed, AddFailed, RemoveFailed))
   }
 
   @js.native
@@ -2388,7 +2390,7 @@ package directoryservice {
     val `MS-CHAPv1` = "MS-CHAPv1"
     val `MS-CHAPv2` = "MS-CHAPv2"
 
-    val values = IndexedSeq(PAP, CHAP, `MS-CHAPv1`, `MS-CHAPv2`)
+    val values = js.Object.freeze(js.Array(PAP, CHAP, `MS-CHAPv1`, `MS-CHAPv2`))
   }
 
   /**
@@ -2435,7 +2437,7 @@ package directoryservice {
     val Completed = "Completed"
     val Failed    = "Failed"
 
-    val values = IndexedSeq(Creating, Completed, Failed)
+    val values = js.Object.freeze(js.Array(Creating, Completed, Failed))
   }
 
   /**
@@ -2575,7 +2577,7 @@ package directoryservice {
   object ReplicationScopeEnum {
     val Domain = "Domain"
 
-    val values = IndexedSeq(Domain)
+    val values = js.Object.freeze(js.Array(Domain))
   }
 
   @js.native
@@ -2695,16 +2697,18 @@ package directoryservice {
     val Failed             = "Failed"
     val Completed          = "Completed"
 
-    val values = IndexedSeq(
-      Initializing,
-      CreatingSnapshot,
-      UpdatingSchema,
-      Replicating,
-      CancelInProgress,
-      RollbackInProgress,
-      Cancelled,
-      Failed,
-      Completed
+    val values = js.Object.freeze(
+      js.Array(
+        Initializing,
+        CreatingSnapshot,
+        UpdatingSchema,
+        Replicating,
+        CancelInProgress,
+        RollbackInProgress,
+        Cancelled,
+        Failed,
+        Completed
+      )
     )
   }
 
@@ -2712,7 +2716,7 @@ package directoryservice {
     val Enabled  = "Enabled"
     val Disabled = "Disabled"
 
-    val values = IndexedSeq(Enabled, Disabled)
+    val values = js.Object.freeze(js.Array(Enabled, Disabled))
   }
 
   @js.native
@@ -2760,7 +2764,7 @@ package directoryservice {
     val ORGANIZATIONS = "ORGANIZATIONS"
     val HANDSHAKE     = "HANDSHAKE"
 
-    val values = IndexedSeq(ORGANIZATIONS, HANDSHAKE)
+    val values = js.Object.freeze(js.Array(ORGANIZATIONS, HANDSHAKE))
   }
 
   object ShareStatusEnum {
@@ -2774,8 +2778,9 @@ package directoryservice {
     val Deleted           = "Deleted"
     val Deleting          = "Deleting"
 
-    val values =
-      IndexedSeq(Shared, PendingAcceptance, Rejected, Rejecting, RejectFailed, Sharing, ShareFailed, Deleted, Deleting)
+    val values = js.Object.freeze(
+      js.Array(Shared, PendingAcceptance, Rejected, Rejecting, RejectFailed, Sharing, ShareFailed, Deleted, Deleting)
+    )
   }
 
   /**
@@ -2905,14 +2910,14 @@ package directoryservice {
     val Completed = "Completed"
     val Failed    = "Failed"
 
-    val values = IndexedSeq(Creating, Completed, Failed)
+    val values = js.Object.freeze(js.Array(Creating, Completed, Failed))
   }
 
   object SnapshotTypeEnum {
     val Auto   = "Auto"
     val Manual = "Manual"
 
-    val values = IndexedSeq(Auto, Manual)
+    val values = js.Object.freeze(js.Array(Auto, Manual))
   }
 
   @js.native
@@ -2982,7 +2987,7 @@ package directoryservice {
   object TargetTypeEnum {
     val ACCOUNT = "ACCOUNT"
 
-    val values = IndexedSeq(ACCOUNT)
+    val values = js.Object.freeze(js.Array(ACCOUNT))
   }
 
   object TopicStatusEnum {
@@ -2991,7 +2996,7 @@ package directoryservice {
     val Failed            = "Failed"
     val Deleted           = "Deleted"
 
-    val values = IndexedSeq(Registered, `Topic not found`, Failed, Deleted)
+    val values = js.Object.freeze(js.Array(Registered, `Topic not found`, Failed, Deleted))
   }
 
   /**
@@ -3047,7 +3052,7 @@ package directoryservice {
     val `One-Way: Incoming` = "One-Way: Incoming"
     val `Two-Way`           = "Two-Way"
 
-    val values = IndexedSeq(`One-Way: Outgoing`, `One-Way: Incoming`, `Two-Way`)
+    val values = js.Object.freeze(js.Array(`One-Way: Outgoing`, `One-Way: Incoming`, `Two-Way`))
   }
 
   object TrustStateEnum {
@@ -3063,18 +3068,20 @@ package directoryservice {
     val Deleted      = "Deleted"
     val Failed       = "Failed"
 
-    val values = IndexedSeq(
-      Creating,
-      Created,
-      Verifying,
-      VerifyFailed,
-      Verified,
-      Updating,
-      UpdateFailed,
-      Updated,
-      Deleting,
-      Deleted,
-      Failed
+    val values = js.Object.freeze(
+      js.Array(
+        Creating,
+        Created,
+        Verifying,
+        VerifyFailed,
+        Verified,
+        Updating,
+        UpdateFailed,
+        Updated,
+        Deleting,
+        Deleted,
+        Failed
+      )
     )
   }
 
@@ -3082,7 +3089,7 @@ package directoryservice {
     val Forest   = "Forest"
     val External = "External"
 
-    val values = IndexedSeq(Forest, External)
+    val values = js.Object.freeze(js.Array(Forest, External))
   }
 
   @js.native
diff --git a/services/dlm/src/main/scala/facade/amazonaws/services/DLM.scala b/services/dlm/src/main/scala/facade/amazonaws/services/DLM.scala
index 90c71347a..b3a9a4e3d 100644
--- a/services/dlm/src/main/scala/facade/amazonaws/services/DLM.scala
+++ b/services/dlm/src/main/scala/facade/amazonaws/services/DLM.scala
@@ -238,13 +238,13 @@ package dlm {
     val DISABLED = "DISABLED"
     val ERROR    = "ERROR"
 
-    val values = IndexedSeq(ENABLED, DISABLED, ERROR)
+    val values = js.Object.freeze(js.Array(ENABLED, DISABLED, ERROR))
   }
 
   object IntervalUnitValuesEnum {
     val HOURS = "HOURS"
 
-    val values = IndexedSeq(HOURS)
+    val values = js.Object.freeze(js.Array(HOURS))
   }
 
   /**
@@ -358,14 +358,14 @@ package dlm {
   object PolicyTypeValuesEnum {
     val EBS_SNAPSHOT_MANAGEMENT = "EBS_SNAPSHOT_MANAGEMENT"
 
-    val values = IndexedSeq(EBS_SNAPSHOT_MANAGEMENT)
+    val values = js.Object.freeze(js.Array(EBS_SNAPSHOT_MANAGEMENT))
   }
 
   object ResourceTypeValuesEnum {
     val VOLUME   = "VOLUME"
     val INSTANCE = "INSTANCE"
 
-    val values = IndexedSeq(VOLUME, INSTANCE)
+    val values = js.Object.freeze(js.Array(VOLUME, INSTANCE))
   }
 
   /**
@@ -425,7 +425,7 @@ package dlm {
     val ENABLED  = "ENABLED"
     val DISABLED = "DISABLED"
 
-    val values = IndexedSeq(ENABLED, DISABLED)
+    val values = js.Object.freeze(js.Array(ENABLED, DISABLED))
   }
 
   /**
diff --git a/services/dms/src/main/scala/facade/amazonaws/services/DMS.scala b/services/dms/src/main/scala/facade/amazonaws/services/DMS.scala
index 04de00cf1..7ee6ab4e6 100644
--- a/services/dms/src/main/scala/facade/amazonaws/services/DMS.scala
+++ b/services/dms/src/main/scala/facade/amazonaws/services/DMS.scala
@@ -395,14 +395,14 @@ package dms {
     val mongodb_cr  = "mongodb_cr"
     val scram_sha_1 = "scram_sha_1"
 
-    val values = IndexedSeq(default, mongodb_cr, scram_sha_1)
+    val values = js.Object.freeze(js.Array(default, mongodb_cr, scram_sha_1))
   }
 
   object AuthTypeValueEnum {
     val no       = "no"
     val password = "password"
 
-    val values = IndexedSeq(no, password)
+    val values = js.Object.freeze(js.Array(no, password))
   }
 
   /**
@@ -472,7 +472,7 @@ package dms {
     val none = "none"
     val gzip = "gzip"
 
-    val values = IndexedSeq(none, gzip)
+    val values = js.Object.freeze(js.Array(none, gzip))
   }
 
   /**
@@ -865,7 +865,7 @@ package dms {
     val csv     = "csv"
     val parquet = "parquet"
 
-    val values = IndexedSeq(csv, parquet)
+    val values = js.Object.freeze(js.Array(csv, parquet))
   }
 
   @js.native
@@ -1915,7 +1915,7 @@ package dms {
     val `verify-ca`   = "verify-ca"
     val `verify-full` = "verify-full"
 
-    val values = IndexedSeq(none, require, `verify-ca`, `verify-full`)
+    val values = js.Object.freeze(js.Array(none, require, `verify-ca`, `verify-full`))
   }
 
   /**
@@ -1993,14 +1993,14 @@ package dms {
     val `plain-dictionary` = "plain-dictionary"
     val `rle-dictionary`   = "rle-dictionary"
 
-    val values = IndexedSeq(plain, `plain-dictionary`, `rle-dictionary`)
+    val values = js.Object.freeze(js.Array(plain, `plain-dictionary`, `rle-dictionary`))
   }
 
   object EncryptionModeValueEnum {
     val `sse-s3`  = "sse-s3"
     val `sse-kms` = "sse-kms"
 
-    val values = IndexedSeq(`sse-s3`, `sse-kms`)
+    val values = js.Object.freeze(js.Array(`sse-s3`, `sse-kms`))
   }
 
   /**
@@ -2312,7 +2312,7 @@ package dms {
   object MessageFormatValueEnum {
     val json = "json"
 
-    val values = IndexedSeq(json)
+    val values = js.Object.freeze(js.Array(json))
   }
 
   object MigrationTypeValueEnum {
@@ -2320,7 +2320,7 @@ package dms {
     val cdc                 = "cdc"
     val `full-load-and-cdc` = "full-load-and-cdc"
 
-    val values = IndexedSeq(`full-load`, cdc, `full-load-and-cdc`)
+    val values = js.Object.freeze(js.Array(`full-load`, cdc, `full-load-and-cdc`))
   }
 
   /**
@@ -2701,7 +2701,7 @@ package dms {
     val none = "none"
     val one  = "one"
 
-    val values = IndexedSeq(none, one)
+    val values = js.Object.freeze(js.Array(none, one))
   }
 
   /**
@@ -2750,7 +2750,7 @@ package dms {
     val `parquet-1-0` = "parquet-1-0"
     val `parquet-2-0` = "parquet-2-0"
 
-    val values = IndexedSeq(`parquet-1-0`, `parquet-2-0`)
+    val values = js.Object.freeze(js.Array(`parquet-1-0`, `parquet-2-0`))
   }
 
   /**
@@ -2989,20 +2989,20 @@ package dms {
     val failed     = "failed"
     val refreshing = "refreshing"
 
-    val values = IndexedSeq(successful, failed, refreshing)
+    val values = js.Object.freeze(js.Array(successful, failed, refreshing))
   }
 
   object ReleaseStatusValuesEnum {
     val beta = "beta"
 
-    val values = IndexedSeq(beta)
+    val values = js.Object.freeze(js.Array(beta))
   }
 
   object ReloadOptionValueEnum {
     val `data-reload`   = "data-reload"
     val `validate-only` = "validate-only"
 
-    val values = IndexedSeq(`data-reload`, `validate-only`)
+    val values = js.Object.freeze(js.Array(`data-reload`, `validate-only`))
   }
 
   @js.native
@@ -3085,7 +3085,7 @@ package dms {
     val source = "source"
     val target = "target"
 
-    val values = IndexedSeq(source, target)
+    val values = js.Object.freeze(js.Array(source, target))
   }
 
   /**
@@ -3506,7 +3506,7 @@ package dms {
   object SourceTypeEnum {
     val `replication-instance` = "replication-instance"
 
-    val values = IndexedSeq(`replication-instance`)
+    val values = js.Object.freeze(js.Array(`replication-instance`))
   }
 
   /**
@@ -3602,7 +3602,7 @@ package dms {
     val `resume-processing` = "resume-processing"
     val `reload-target`     = "reload-target"
 
-    val values = IndexedSeq(`start-replication`, `resume-processing`, `reload-target`)
+    val values = js.Object.freeze(js.Array(`start-replication`, `resume-processing`, `reload-target`))
   }
 
   /**
diff --git a/services/docdb/src/main/scala/facade/amazonaws/services/DocDB.scala b/services/docdb/src/main/scala/facade/amazonaws/services/DocDB.scala
index d1855aa93..c793597a4 100644
--- a/services/docdb/src/main/scala/facade/amazonaws/services/DocDB.scala
+++ b/services/docdb/src/main/scala/facade/amazonaws/services/DocDB.scala
@@ -255,7 +255,7 @@ package docdb {
     val immediate        = "immediate"
     val `pending-reboot` = "pending-reboot"
 
-    val values = IndexedSeq(immediate, `pending-reboot`)
+    val values = js.Object.freeze(js.Array(immediate, `pending-reboot`))
   }
 
   /**
@@ -2885,13 +2885,15 @@ package docdb {
     val `db-cluster`          = "db-cluster"
     val `db-cluster-snapshot` = "db-cluster-snapshot"
 
-    val values = IndexedSeq(
-      `db-instance`,
-      `db-parameter-group`,
-      `db-security-group`,
-      `db-snapshot`,
-      `db-cluster`,
-      `db-cluster-snapshot`
+    val values = js.Object.freeze(
+      js.Array(
+        `db-instance`,
+        `db-parameter-group`,
+        `db-security-group`,
+        `db-snapshot`,
+        `db-cluster`,
+        `db-cluster-snapshot`
+      )
     )
   }
 
diff --git a/services/dynamodb/src/main/scala/facade/amazonaws/services/DynamoDB.scala b/services/dynamodb/src/main/scala/facade/amazonaws/services/DynamoDB.scala
index fdb1bf64d..ec113e752 100644
--- a/services/dynamodb/src/main/scala/facade/amazonaws/services/DynamoDB.scala
+++ b/services/dynamodb/src/main/scala/facade/amazonaws/services/DynamoDB.scala
@@ -279,7 +279,7 @@ package dynamodb {
     val PUT    = "PUT"
     val DELETE = "DELETE"
 
-    val values = IndexedSeq(ADD, PUT, DELETE)
+    val values = js.Object.freeze(js.Array(ADD, PUT, DELETE))
   }
 
   /**
@@ -650,7 +650,7 @@ package dynamodb {
     val DELETED   = "DELETED"
     val AVAILABLE = "AVAILABLE"
 
-    val values = IndexedSeq(CREATING, DELETED, AVAILABLE)
+    val values = js.Object.freeze(js.Array(CREATING, DELETED, AVAILABLE))
   }
 
   /**
@@ -703,7 +703,7 @@ package dynamodb {
     val SYSTEM     = "SYSTEM"
     val AWS_BACKUP = "AWS_BACKUP"
 
-    val values = IndexedSeq(USER, SYSTEM, AWS_BACKUP)
+    val values = js.Object.freeze(js.Array(USER, SYSTEM, AWS_BACKUP))
   }
 
   object BackupTypeFilterEnum {
@@ -712,7 +712,7 @@ package dynamodb {
     val AWS_BACKUP = "AWS_BACKUP"
     val ALL        = "ALL"
 
-    val values = IndexedSeq(USER, SYSTEM, AWS_BACKUP, ALL)
+    val values = js.Object.freeze(js.Array(USER, SYSTEM, AWS_BACKUP, ALL))
   }
 
   /**
@@ -816,7 +816,7 @@ package dynamodb {
     val PROVISIONED     = "PROVISIONED"
     val PAY_PER_REQUEST = "PAY_PER_REQUEST"
 
-    val values = IndexedSeq(PROVISIONED, PAY_PER_REQUEST)
+    val values = js.Object.freeze(js.Array(PROVISIONED, PAY_PER_REQUEST))
   }
 
   /**
@@ -881,7 +881,9 @@ package dynamodb {
     val NOT_CONTAINS = "NOT_CONTAINS"
     val BEGINS_WITH  = "BEGINS_WITH"
 
-    val values = IndexedSeq(EQ, NE, IN, LE, LT, GE, GT, BETWEEN, NOT_NULL, NULL, CONTAINS, NOT_CONTAINS, BEGINS_WITH)
+    val values = js.Object.freeze(
+      js.Array(EQ, NE, IN, LE, LT, GE, GT, BETWEEN, NOT_NULL, NULL, CONTAINS, NOT_CONTAINS, BEGINS_WITH)
+    )
   }
 
   /**
@@ -952,7 +954,7 @@ package dynamodb {
     val AND = "AND"
     val OR  = "OR"
 
-    val values = IndexedSeq(AND, OR)
+    val values = js.Object.freeze(js.Array(AND, OR))
   }
 
   /**
@@ -1020,7 +1022,7 @@ package dynamodb {
     val ENABLED  = "ENABLED"
     val DISABLED = "DISABLED"
 
-    val values = IndexedSeq(ENABLED, DISABLED)
+    val values = js.Object.freeze(js.Array(ENABLED, DISABLED))
   }
 
   @js.native
@@ -2074,7 +2076,7 @@ package dynamodb {
     val DELETING = "DELETING"
     val UPDATING = "UPDATING"
 
-    val values = IndexedSeq(CREATING, ACTIVE, DELETING, UPDATING)
+    val values = js.Object.freeze(js.Array(CREATING, ACTIVE, DELETING, UPDATING))
   }
 
   object IndexStatusEnum {
@@ -2083,7 +2085,7 @@ package dynamodb {
     val DELETING = "DELETING"
     val ACTIVE   = "ACTIVE"
 
-    val values = IndexedSeq(CREATING, UPDATING, DELETING, ACTIVE)
+    val values = js.Object.freeze(js.Array(CREATING, UPDATING, DELETING, ACTIVE))
   }
 
   /**
@@ -2154,7 +2156,7 @@ package dynamodb {
     val HASH  = "HASH"
     val RANGE = "RANGE"
 
-    val values = IndexedSeq(HASH, RANGE)
+    val values = js.Object.freeze(js.Array(HASH, RANGE))
   }
 
   /**
@@ -2492,7 +2494,7 @@ package dynamodb {
     val ENABLED  = "ENABLED"
     val DISABLED = "DISABLED"
 
-    val values = IndexedSeq(ENABLED, DISABLED)
+    val values = js.Object.freeze(js.Array(ENABLED, DISABLED))
   }
 
   /**
@@ -2521,7 +2523,7 @@ package dynamodb {
     val KEYS_ONLY = "KEYS_ONLY"
     val INCLUDE   = "INCLUDE"
 
-    val values = IndexedSeq(ALL, KEYS_ONLY, INCLUDE)
+    val values = js.Object.freeze(js.Array(ALL, KEYS_ONLY, INCLUDE))
   }
 
   /**
@@ -3007,7 +3009,7 @@ package dynamodb {
     val DELETING = "DELETING"
     val ACTIVE   = "ACTIVE"
 
-    val values = IndexedSeq(CREATING, UPDATING, DELETING, ACTIVE)
+    val values = js.Object.freeze(js.Array(CREATING, UPDATING, DELETING, ACTIVE))
   }
 
   /**
@@ -3151,14 +3153,14 @@ package dynamodb {
     val TOTAL   = "TOTAL"
     val NONE    = "NONE"
 
-    val values = IndexedSeq(INDEXES, TOTAL, NONE)
+    val values = js.Object.freeze(js.Array(INDEXES, TOTAL, NONE))
   }
 
   object ReturnItemCollectionMetricsEnum {
     val SIZE = "SIZE"
     val NONE = "NONE"
 
-    val values = IndexedSeq(SIZE, NONE)
+    val values = js.Object.freeze(js.Array(SIZE, NONE))
   }
 
   object ReturnValueEnum {
@@ -3168,14 +3170,14 @@ package dynamodb {
     val ALL_NEW     = "ALL_NEW"
     val UPDATED_NEW = "UPDATED_NEW"
 
-    val values = IndexedSeq(NONE, ALL_OLD, UPDATED_OLD, ALL_NEW, UPDATED_NEW)
+    val values = js.Object.freeze(js.Array(NONE, ALL_OLD, UPDATED_OLD, ALL_NEW, UPDATED_NEW))
   }
 
   object ReturnValuesOnConditionCheckFailureEnum {
     val ALL_OLD = "ALL_OLD"
     val NONE    = "NONE"
 
-    val values = IndexedSeq(ALL_OLD, NONE)
+    val values = js.Object.freeze(js.Array(ALL_OLD, NONE))
   }
 
   /**
@@ -3233,14 +3235,14 @@ package dynamodb {
     val DISABLED  = "DISABLED"
     val UPDATING  = "UPDATING"
 
-    val values = IndexedSeq(ENABLING, ENABLED, DISABLING, DISABLED, UPDATING)
+    val values = js.Object.freeze(js.Array(ENABLING, ENABLED, DISABLING, DISABLED, UPDATING))
   }
 
   object SSETypeEnum {
     val AES256 = "AES256"
     val KMS    = "KMS"
 
-    val values = IndexedSeq(AES256, KMS)
+    val values = js.Object.freeze(js.Array(AES256, KMS))
   }
 
   object ScalarAttributeTypeEnum {
@@ -3248,7 +3250,7 @@ package dynamodb {
     val N = "N"
     val B = "B"
 
-    val values = IndexedSeq(S, N, B)
+    val values = js.Object.freeze(js.Array(S, N, B))
   }
 
   /**
@@ -3352,7 +3354,7 @@ package dynamodb {
     val SPECIFIC_ATTRIBUTES      = "SPECIFIC_ATTRIBUTES"
     val COUNT                    = "COUNT"
 
-    val values = IndexedSeq(ALL_ATTRIBUTES, ALL_PROJECTED_ATTRIBUTES, SPECIFIC_ATTRIBUTES, COUNT)
+    val values = js.Object.freeze(js.Array(ALL_ATTRIBUTES, ALL_PROJECTED_ATTRIBUTES, SPECIFIC_ATTRIBUTES, COUNT))
   }
 
   /**
@@ -3456,7 +3458,7 @@ package dynamodb {
     val NEW_AND_OLD_IMAGES = "NEW_AND_OLD_IMAGES"
     val KEYS_ONLY          = "KEYS_ONLY"
 
-    val values = IndexedSeq(NEW_IMAGE, OLD_IMAGE, NEW_AND_OLD_IMAGES, KEYS_ONLY)
+    val values = js.Object.freeze(js.Array(NEW_IMAGE, OLD_IMAGE, NEW_AND_OLD_IMAGES, KEYS_ONLY))
   }
 
   /**
@@ -3534,7 +3536,7 @@ package dynamodb {
     val DELETING = "DELETING"
     val ACTIVE   = "ACTIVE"
 
-    val values = IndexedSeq(CREATING, UPDATING, DELETING, ACTIVE)
+    val values = js.Object.freeze(js.Array(CREATING, UPDATING, DELETING, ACTIVE))
   }
 
   /**
@@ -3632,7 +3634,7 @@ package dynamodb {
     val ENABLED   = "ENABLED"
     val DISABLED  = "DISABLED"
 
-    val values = IndexedSeq(ENABLING, DISABLING, ENABLED, DISABLED)
+    val values = js.Object.freeze(js.Array(ENABLING, DISABLING, ENABLED, DISABLED))
   }
 
   /**
diff --git a/services/dynamodbstreams/src/main/scala/facade/amazonaws/services/DynamoDBStreams.scala b/services/dynamodbstreams/src/main/scala/facade/amazonaws/services/DynamoDBStreams.scala
index 8738048a4..41cfc1c8e 100644
--- a/services/dynamodbstreams/src/main/scala/facade/amazonaws/services/DynamoDBStreams.scala
+++ b/services/dynamodbstreams/src/main/scala/facade/amazonaws/services/DynamoDBStreams.scala
@@ -315,7 +315,7 @@ package dynamodbstreams {
     val HASH  = "HASH"
     val RANGE = "RANGE"
 
-    val values = IndexedSeq(HASH, RANGE)
+    val values = js.Object.freeze(js.Array(HASH, RANGE))
   }
 
   /**
@@ -376,7 +376,7 @@ package dynamodbstreams {
     val MODIFY = "MODIFY"
     val REMOVE = "REMOVE"
 
-    val values = IndexedSeq(INSERT, MODIFY, REMOVE)
+    val values = js.Object.freeze(js.Array(INSERT, MODIFY, REMOVE))
   }
 
   /**
@@ -474,7 +474,7 @@ package dynamodbstreams {
     val AT_SEQUENCE_NUMBER    = "AT_SEQUENCE_NUMBER"
     val AFTER_SEQUENCE_NUMBER = "AFTER_SEQUENCE_NUMBER"
 
-    val values = IndexedSeq(TRIM_HORIZON, LATEST, AT_SEQUENCE_NUMBER, AFTER_SEQUENCE_NUMBER)
+    val values = js.Object.freeze(js.Array(TRIM_HORIZON, LATEST, AT_SEQUENCE_NUMBER, AFTER_SEQUENCE_NUMBER))
   }
 
   /**
@@ -585,7 +585,7 @@ package dynamodbstreams {
     val DISABLING = "DISABLING"
     val DISABLED  = "DISABLED"
 
-    val values = IndexedSeq(ENABLING, ENABLED, DISABLING, DISABLED)
+    val values = js.Object.freeze(js.Array(ENABLING, ENABLED, DISABLING, DISABLED))
   }
 
   object StreamViewTypeEnum {
@@ -594,7 +594,7 @@ package dynamodbstreams {
     val NEW_AND_OLD_IMAGES = "NEW_AND_OLD_IMAGES"
     val KEYS_ONLY          = "KEYS_ONLY"
 
-    val values = IndexedSeq(NEW_IMAGE, OLD_IMAGE, NEW_AND_OLD_IMAGES, KEYS_ONLY)
+    val values = js.Object.freeze(js.Array(NEW_IMAGE, OLD_IMAGE, NEW_AND_OLD_IMAGES, KEYS_ONLY))
   }
 
   /**
diff --git a/services/ec2/src/main/scala/facade/amazonaws/services/EC2.scala b/services/ec2/src/main/scala/facade/amazonaws/services/EC2.scala
index ef45eb16a..0132eb838 100644
--- a/services/ec2/src/main/scala/facade/amazonaws/services/EC2.scala
+++ b/services/ec2/src/main/scala/facade/amazonaws/services/EC2.scala
@@ -2284,7 +2284,7 @@ package ec2 {
     val `supported-platforms` = "supported-platforms"
     val `default-vpc`         = "default-vpc"
 
-    val values = IndexedSeq(`supported-platforms`, `default-vpc`)
+    val values = js.Object.freeze(js.Array(`supported-platforms`, `default-vpc`))
   }
 
   /**
@@ -2338,7 +2338,7 @@ package ec2 {
     val pending_termination = "pending_termination"
     val fulfilled           = "fulfilled"
 
-    val values = IndexedSeq(error, pending_fulfillment, pending_termination, fulfilled)
+    val values = js.Object.freeze(js.Array(error, pending_fulfillment, pending_termination, fulfilled))
   }
 
   /**
@@ -2425,7 +2425,7 @@ package ec2 {
     val default = "default"
     val host    = "host"
 
-    val values = IndexedSeq(default, host)
+    val values = js.Object.freeze(js.Array(default, host))
   }
 
   @js.native
@@ -2537,8 +2537,9 @@ package ec2 {
     val `released-permanent-failure` = "released-permanent-failure"
     val pending                      = "pending"
 
-    val values =
-      IndexedSeq(available, `under-assessment`, `permanent-failure`, released, `released-permanent-failure`, pending)
+    val values = js.Object.freeze(
+      js.Array(available, `under-assessment`, `permanent-failure`, released, `released-permanent-failure`, pending)
+    )
   }
 
   object AllocationStrategyEnum {
@@ -2546,7 +2547,7 @@ package ec2 {
     val diversified       = "diversified"
     val capacityOptimized = "capacityOptimized"
 
-    val values = IndexedSeq(lowestPrice, diversified, capacityOptimized)
+    val values = js.Object.freeze(js.Array(lowestPrice, diversified, capacityOptimized))
   }
 
   /**
@@ -2616,7 +2617,7 @@ package ec2 {
     val x86_64 = "x86_64"
     val arm64  = "arm64"
 
-    val values = IndexedSeq(i386, x86_64, arm64)
+    val values = js.Object.freeze(js.Array(i386, x86_64, arm64))
   }
 
   @js.native
@@ -3040,7 +3041,7 @@ package ec2 {
   object AssociatedNetworkTypeEnum {
     val vpc = "vpc"
 
-    val values = IndexedSeq(vpc)
+    val values = js.Object.freeze(js.Array(vpc))
   }
 
   /**
@@ -3092,7 +3093,8 @@ package ec2 {
     val disassociating       = "disassociating"
     val disassociated        = "disassociated"
 
-    val values = IndexedSeq(associating, associated, `association-failed`, disassociating, disassociated)
+    val values =
+      js.Object.freeze(js.Array(associating, associated, `association-failed`, disassociating, disassociated))
   }
 
   @js.native
@@ -3285,7 +3287,7 @@ package ec2 {
     val detaching = "detaching"
     val detached  = "detached"
 
-    val values = IndexedSeq(attaching, attached, detaching, detached)
+    val values = js.Object.freeze(js.Array(attaching, attached, detaching, detached))
   }
 
   /**
@@ -3494,14 +3496,14 @@ package ec2 {
     val enable  = "enable"
     val disable = "disable"
 
-    val values = IndexedSeq(enable, disable)
+    val values = js.Object.freeze(js.Array(enable, disable))
   }
 
   object AutoPlacementEnum {
     val on  = "on"
     val off = "off"
 
-    val values = IndexedSeq(on, off)
+    val values = js.Object.freeze(js.Array(on, off))
   }
 
   /**
@@ -3558,7 +3560,7 @@ package ec2 {
     val impaired    = "impaired"
     val unavailable = "unavailable"
 
-    val values = IndexedSeq(available, information, impaired, unavailable)
+    val values = js.Object.freeze(js.Array(available, information, impaired, unavailable))
   }
 
   /**
@@ -3591,7 +3593,9 @@ package ec2 {
     val cancelled_terminating = "cancelled_terminating"
     val modifying             = "modifying"
 
-    val values = IndexedSeq(submitted, active, cancelled, failed, cancelled_running, cancelled_terminating, modifying)
+    val values = js.Object.freeze(
+      js.Array(submitted, active, cancelled, failed, cancelled_running, cancelled_terminating, modifying)
+    )
   }
 
   @js.native
@@ -3749,7 +3753,8 @@ package ec2 {
     val complete               = "complete"
     val failed                 = "failed"
 
-    val values = IndexedSeq(pending, `waiting-for-shutdown`, bundling, storing, cancelling, complete, failed)
+    val values =
+      js.Object.freeze(js.Array(pending, `waiting-for-shutdown`, bundling, storing, cancelling, complete, failed))
   }
 
   /**
@@ -3788,14 +3793,16 @@ package ec2 {
     val `pending-provision`   = "pending-provision"
     val provisioned           = "provisioned"
 
-    val values = IndexedSeq(
-      advertised,
-      deprovisioned,
-      `failed-deprovision`,
-      `failed-provision`,
-      `pending-deprovision`,
-      `pending-provision`,
-      provisioned
+    val values = js.Object.freeze(
+      js.Array(
+        advertised,
+        deprovisioned,
+        `failed-deprovision`,
+        `failed-provision`,
+        `pending-deprovision`,
+        `pending-provision`,
+        provisioned
+      )
     )
   }
 
@@ -3805,11 +3812,8 @@ package ec2 {
     val fleetRequestNotInCancellableState = "fleetRequestNotInCancellableState"
     val unexpectedError                   = "unexpectedError"
 
-    val values = IndexedSeq(
-      fleetRequestIdDoesNotExist,
-      fleetRequestIdMalformed,
-      fleetRequestNotInCancellableState,
-      unexpectedError
+    val values = js.Object.freeze(
+      js.Array(fleetRequestIdDoesNotExist, fleetRequestIdMalformed, fleetRequestNotInCancellableState, unexpectedError)
     )
   }
 
@@ -4133,7 +4137,7 @@ package ec2 {
     val cancelled = "cancelled"
     val completed = "completed"
 
-    val values = IndexedSeq(active, open, closed, cancelled, completed)
+    val values = js.Object.freeze(js.Array(active, open, closed, cancelled, completed))
   }
 
   /**
@@ -4282,18 +4286,20 @@ package ec2 {
     val `Linux with SQL Server Web`          = "Linux with SQL Server Web"
     val `Linux with SQL Server Enterprise`   = "Linux with SQL Server Enterprise"
 
-    val values = IndexedSeq(
-      `Linux/UNIX`,
-      `Red Hat Enterprise Linux`,
-      `SUSE Linux`,
-      Windows,
-      `Windows with SQL Server`,
-      `Windows with SQL Server Enterprise`,
-      `Windows with SQL Server Standard`,
-      `Windows with SQL Server Web`,
-      `Linux with SQL Server Standard`,
-      `Linux with SQL Server Web`,
-      `Linux with SQL Server Enterprise`
+    val values = js.Object.freeze(
+      js.Array(
+        `Linux/UNIX`,
+        `Red Hat Enterprise Linux`,
+        `SUSE Linux`,
+        Windows,
+        `Windows with SQL Server`,
+        `Windows with SQL Server Enterprise`,
+        `Windows with SQL Server Standard`,
+        `Windows with SQL Server Web`,
+        `Linux with SQL Server Standard`,
+        `Linux with SQL Server Web`,
+        `Linux with SQL Server Enterprise`
+      )
     )
   }
 
@@ -4301,7 +4307,7 @@ package ec2 {
     val open = "open"
     val none = "none"
 
-    val values = IndexedSeq(open, none)
+    val values = js.Object.freeze(js.Array(open, none))
   }
 
   /**
@@ -4358,7 +4364,7 @@ package ec2 {
     val pending   = "pending"
     val failed    = "failed"
 
-    val values = IndexedSeq(active, expired, cancelled, pending, failed)
+    val values = js.Object.freeze(js.Array(active, expired, cancelled, pending, failed))
   }
 
   /**
@@ -4401,7 +4407,7 @@ package ec2 {
     val default   = "default"
     val dedicated = "dedicated"
 
-    val values = IndexedSeq(default, dedicated)
+    val values = js.Object.freeze(js.Array(default, dedicated))
   }
 
   /**
@@ -4592,7 +4598,7 @@ package ec2 {
     val pending = "pending"
     val active  = "active"
 
-    val values = IndexedSeq(pending, active)
+    val values = js.Object.freeze(js.Array(pending, active))
   }
 
   /**
@@ -4674,7 +4680,7 @@ package ec2 {
     val `certificate-authentication`       = "certificate-authentication"
     val `directory-service-authentication` = "directory-service-authentication"
 
-    val values = IndexedSeq(`certificate-authentication`, `directory-service-authentication`)
+    val values = js.Object.freeze(js.Array(`certificate-authentication`, `directory-service-authentication`))
   }
 
   /**
@@ -4704,7 +4710,7 @@ package ec2 {
     val failed      = "failed"
     val revoking    = "revoking"
 
-    val values = IndexedSeq(authorizing, active, failed, revoking)
+    val values = js.Object.freeze(js.Array(authorizing, active, failed, revoking))
   }
 
   /**
@@ -4788,7 +4794,7 @@ package ec2 {
     val terminating           = "terminating"
     val terminated            = "terminated"
 
-    val values = IndexedSeq(active, `failed-to-terminate`, terminating, terminated)
+    val values = js.Object.freeze(js.Array(active, `failed-to-terminate`, terminating, terminated))
   }
 
   /**
@@ -4881,7 +4887,7 @@ package ec2 {
     val deleting            = "deleting"
     val deleted             = "deleted"
 
-    val values = IndexedSeq(`pending-associate`, available, deleting, deleted)
+    val values = js.Object.freeze(js.Array(`pending-associate`, available, deleting, deleted))
   }
 
   /**
@@ -4947,7 +4953,7 @@ package ec2 {
     val failed   = "failed"
     val deleting = "deleting"
 
-    val values = IndexedSeq(creating, active, failed, deleting)
+    val values = js.Object.freeze(js.Array(creating, active, failed, deleting))
   }
 
   @js.native
@@ -5079,19 +5085,19 @@ package ec2 {
     val Enabled  = "Enabled"
     val Disabled = "Disabled"
 
-    val values = IndexedSeq(Enabled, Disabled)
+    val values = js.Object.freeze(js.Array(Enabled, Disabled))
   }
 
   object ConnectionNotificationTypeEnum {
     val Topic = "Topic"
 
-    val values = IndexedSeq(Topic)
+    val values = js.Object.freeze(js.Array(Topic))
   }
 
   object ContainerFormatEnum {
     val ova = "ova"
 
-    val values = IndexedSeq(ova)
+    val values = js.Object.freeze(js.Array(ova))
   }
 
   /**
@@ -5136,7 +5142,7 @@ package ec2 {
     val cancelled  = "cancelled"
     val completed  = "completed"
 
-    val values = IndexedSeq(active, cancelling, cancelled, completed)
+    val values = js.Object.freeze(js.Array(active, cancelling, cancelled, completed))
   }
 
   @js.native
@@ -5307,7 +5313,7 @@ package ec2 {
   object CopyTagsFromSourceEnum {
     val volume = "volume"
 
-    val values = IndexedSeq(volume)
+    val values = js.Object.freeze(js.Array(volume))
   }
 
   /**
@@ -7748,7 +7754,7 @@ package ec2 {
   object CurrencyCodeValuesEnum {
     val USD = "USD"
 
-    val values = IndexedSeq(USD)
+    val values = js.Object.freeze(js.Array(USD))
   }
 
   /**
@@ -7791,28 +7797,28 @@ package ec2 {
     val Active   = "Active"
     val Inactive = "Inactive"
 
-    val values = IndexedSeq(Active, Inactive)
+    val values = js.Object.freeze(js.Array(Active, Inactive))
   }
 
   object DefaultRouteTableAssociationValueEnum {
     val enable  = "enable"
     val disable = "disable"
 
-    val values = IndexedSeq(enable, disable)
+    val values = js.Object.freeze(js.Array(enable, disable))
   }
 
   object DefaultRouteTablePropagationValueEnum {
     val enable  = "enable"
     val disable = "disable"
 
-    val values = IndexedSeq(enable, disable)
+    val values = js.Object.freeze(js.Array(enable, disable))
   }
 
   object DefaultTargetCapacityTypeEnum {
     val spot        = "spot"
     val `on-demand` = "on-demand"
 
-    val values = IndexedSeq(spot, `on-demand`)
+    val values = js.Object.freeze(js.Array(spot, `on-demand`))
   }
 
   @js.native
@@ -7996,7 +8002,8 @@ package ec2 {
     val fleetNotInDeletableState = "fleetNotInDeletableState"
     val unexpectedError          = "unexpectedError"
 
-    val values = IndexedSeq(fleetIdDoesNotExist, fleetIdMalformed, fleetNotInDeletableState, unexpectedError)
+    val values =
+      js.Object.freeze(js.Array(fleetIdDoesNotExist, fleetIdMalformed, fleetNotInDeletableState, unexpectedError))
   }
 
   /**
@@ -13908,7 +13915,7 @@ package ec2 {
     val ebs              = "ebs"
     val `instance-store` = "instance-store"
 
-    val values = IndexedSeq(ebs, `instance-store`)
+    val values = js.Object.freeze(js.Array(ebs, `instance-store`))
   }
 
   /**
@@ -14460,7 +14467,7 @@ package ec2 {
     val RAW  = "RAW"
     val VHD  = "VHD"
 
-    val values = IndexedSeq(VMDK, RAW, VHD)
+    val values = js.Object.freeze(js.Array(VMDK, RAW, VHD))
   }
 
   /**
@@ -14530,14 +14537,14 @@ package ec2 {
     val enable  = "enable"
     val disable = "disable"
 
-    val values = IndexedSeq(enable, disable)
+    val values = js.Object.freeze(js.Array(enable, disable))
   }
 
   object DomainTypeEnum {
     val vpc      = "vpc"
     val standard = "standard"
 
-    val values = IndexedSeq(vpc, standard)
+    val values = js.Object.freeze(js.Array(vpc, standard))
   }
 
   /**
@@ -14731,14 +14738,14 @@ package ec2 {
   object ElasticGpuStateEnum {
     val ATTACHED = "ATTACHED"
 
-    val values = IndexedSeq(ATTACHED)
+    val values = js.Object.freeze(js.Array(ATTACHED))
   }
 
   object ElasticGpuStatusEnum {
     val OK       = "OK"
     val IMPAIRED = "IMPAIRED"
 
-    val values = IndexedSeq(OK, IMPAIRED)
+    val values = js.Object.freeze(js.Array(OK, IMPAIRED))
   }
 
   /**
@@ -15012,7 +15019,7 @@ package ec2 {
     val unlimited = "unlimited"
     val limited   = "limited"
 
-    val values = IndexedSeq(unlimited, limited)
+    val values = js.Object.freeze(js.Array(unlimited, limited))
   }
 
   object EventCodeEnum {
@@ -15022,8 +15029,9 @@ package ec2 {
     val `instance-retirement` = "instance-retirement"
     val `instance-stop`       = "instance-stop"
 
-    val values =
-      IndexedSeq(`instance-reboot`, `system-reboot`, `system-maintenance`, `instance-retirement`, `instance-stop`)
+    val values = js.Object.freeze(
+      js.Array(`instance-reboot`, `system-reboot`, `system-maintenance`, `instance-retirement`, `instance-stop`)
+    )
   }
 
   /**
@@ -15056,14 +15064,14 @@ package ec2 {
     val error              = "error"
     val information        = "information"
 
-    val values = IndexedSeq(instanceChange, fleetRequestChange, error, information)
+    val values = js.Object.freeze(js.Array(instanceChange, fleetRequestChange, error, information))
   }
 
   object ExcessCapacityTerminationPolicyEnum {
     val noTermination = "noTermination"
     val default       = "default"
 
-    val values = IndexedSeq(noTermination, default)
+    val values = js.Object.freeze(js.Array(noTermination, default))
   }
 
   @js.native
@@ -15144,7 +15152,7 @@ package ec2 {
     val vmware    = "vmware"
     val microsoft = "microsoft"
 
-    val values = IndexedSeq(citrix, vmware, microsoft)
+    val values = js.Object.freeze(js.Array(citrix, vmware, microsoft))
   }
 
   @js.native
@@ -15340,7 +15348,7 @@ package ec2 {
     val cancelled  = "cancelled"
     val completed  = "completed"
 
-    val values = IndexedSeq(active, cancelling, cancelled, completed)
+    val values = js.Object.freeze(js.Array(active, cancelling, cancelled, completed))
   }
 
   /**
@@ -15475,7 +15483,7 @@ package ec2 {
     val `pending-termination` = "pending-termination"
     val fulfilled             = "fulfilled"
 
-    val values = IndexedSeq(error, `pending-fulfillment`, `pending-termination`, fulfilled)
+    val values = js.Object.freeze(js.Array(error, `pending-fulfillment`, `pending-termination`, fulfilled))
   }
 
   /**
@@ -15562,14 +15570,14 @@ package ec2 {
     val `fleet-change`    = "fleet-change"
     val `service-error`   = "service-error"
 
-    val values = IndexedSeq(`instance-change`, `fleet-change`, `service-error`)
+    val values = js.Object.freeze(js.Array(`instance-change`, `fleet-change`, `service-error`))
   }
 
   object FleetExcessCapacityTerminationPolicyEnum {
     val `no-termination` = "no-termination"
     val termination      = "termination"
 
-    val values = IndexedSeq(`no-termination`, termination)
+    val values = js.Object.freeze(js.Array(`no-termination`, termination))
   }
 
   /**
@@ -15738,7 +15746,7 @@ package ec2 {
     val `lowest-price` = "lowest-price"
     val prioritized    = "prioritized"
 
-    val values = IndexedSeq(`lowest-price`, prioritized)
+    val values = js.Object.freeze(js.Array(`lowest-price`, prioritized))
   }
 
   object FleetStateCodeEnum {
@@ -15750,7 +15758,9 @@ package ec2 {
     val `deleted-terminating` = "deleted-terminating"
     val modifying             = "modifying"
 
-    val values = IndexedSeq(submitted, active, deleted, failed, `deleted-running`, `deleted-terminating`, modifying)
+    val values = js.Object.freeze(
+      js.Array(submitted, active, deleted, failed, `deleted-running`, `deleted-terminating`, modifying)
+    )
   }
 
   object FleetTypeEnum {
@@ -15758,7 +15768,7 @@ package ec2 {
     val maintain = "maintain"
     val instant  = "instant"
 
-    val values = IndexedSeq(request, maintain, instant)
+    val values = js.Object.freeze(js.Array(request, maintain, instant))
   }
 
   /**
@@ -15814,7 +15824,7 @@ package ec2 {
     val Subnet           = "Subnet"
     val NetworkInterface = "NetworkInterface"
 
-    val values = IndexedSeq(VPC, Subnet, NetworkInterface)
+    val values = js.Object.freeze(js.Array(VPC, Subnet, NetworkInterface))
   }
 
   /**
@@ -15913,7 +15923,7 @@ package ec2 {
     val loadPermission = "loadPermission"
     val productCodes   = "productCodes"
 
-    val values = IndexedSeq(description, name, loadPermission, productCodes)
+    val values = js.Object.freeze(js.Array(description, name, loadPermission, productCodes))
   }
 
   /**
@@ -15943,13 +15953,13 @@ package ec2 {
     val available   = "available"
     val unavailable = "unavailable"
 
-    val values = IndexedSeq(pending, failed, available, unavailable)
+    val values = js.Object.freeze(js.Array(pending, failed, available, unavailable))
   }
 
   object GatewayTypeEnum {
     val `ipsec.1` = "ipsec.1"
 
-    val values = IndexedSeq(`ipsec.1`)
+    val values = js.Object.freeze(js.Array(`ipsec.1`))
   }
 
   @js.native
@@ -16740,7 +16750,7 @@ package ec2 {
     val on  = "on"
     val off = "off"
 
-    val values = IndexedSeq(on, off)
+    val values = js.Object.freeze(js.Array(on, off))
   }
 
   /**
@@ -16804,14 +16814,14 @@ package ec2 {
     val dedicated = "dedicated"
     val host      = "host"
 
-    val values = IndexedSeq(dedicated, host)
+    val values = js.Object.freeze(js.Array(dedicated, host))
   }
 
   object HypervisorTypeEnum {
     val ovm = "ovm"
     val xen = "xen"
 
-    val values = IndexedSeq(ovm, xen)
+    val values = js.Object.freeze(js.Array(ovm, xen))
   }
 
   /**
@@ -16871,7 +16881,7 @@ package ec2 {
     val disassociating = "disassociating"
     val disassociated  = "disassociated"
 
-    val values = IndexedSeq(associating, associated, disassociating, disassociated)
+    val values = js.Object.freeze(js.Array(associating, associated, disassociating, disassociated))
   }
 
   /**
@@ -17075,8 +17085,9 @@ package ec2 {
     val blockDeviceMapping = "blockDeviceMapping"
     val sriovNetSupport    = "sriovNetSupport"
 
-    val values =
-      IndexedSeq(description, kernel, ramdisk, launchPermission, productCodes, blockDeviceMapping, sriovNetSupport)
+    val values = js.Object.freeze(
+      js.Array(description, kernel, ramdisk, launchPermission, productCodes, blockDeviceMapping, sriovNetSupport)
+    )
   }
 
   /**
@@ -17121,7 +17132,7 @@ package ec2 {
     val failed       = "failed"
     val error        = "error"
 
-    val values = IndexedSeq(pending, available, invalid, deregistered, transient, failed, error)
+    val values = js.Object.freeze(js.Array(pending, available, invalid, deregistered, transient, failed, error))
   }
 
   object ImageTypeValuesEnum {
@@ -17129,7 +17140,7 @@ package ec2 {
     val kernel  = "kernel"
     val ramdisk = "ramdisk"
 
-    val values = IndexedSeq(machine, kernel, ramdisk)
+    val values = js.Object.freeze(js.Array(machine, kernel, ramdisk))
   }
 
   @js.native
@@ -17908,21 +17919,23 @@ package ec2 {
     val sriovNetSupport                   = "sriovNetSupport"
     val enaSupport                        = "enaSupport"
 
-    val values = IndexedSeq(
-      instanceType,
-      kernel,
-      ramdisk,
-      userData,
-      disableApiTermination,
-      instanceInitiatedShutdownBehavior,
-      rootDeviceName,
-      blockDeviceMapping,
-      productCodes,
-      sourceDestCheck,
-      groupSet,
-      ebsOptimized,
-      sriovNetSupport,
-      enaSupport
+    val values = js.Object.freeze(
+      js.Array(
+        instanceType,
+        kernel,
+        ramdisk,
+        userData,
+        disableApiTermination,
+        instanceInitiatedShutdownBehavior,
+        rootDeviceName,
+        blockDeviceMapping,
+        productCodes,
+        sourceDestCheck,
+        groupSet,
+        ebsOptimized,
+        sriovNetSupport,
+        enaSupport
+      )
     )
   }
 
@@ -18086,7 +18099,7 @@ package ec2 {
     val healthy   = "healthy"
     val unhealthy = "unhealthy"
 
-    val values = IndexedSeq(healthy, unhealthy)
+    val values = js.Object.freeze(js.Array(healthy, unhealthy))
   }
 
   object InstanceInterruptionBehaviorEnum {
@@ -18094,7 +18107,7 @@ package ec2 {
     val stop      = "stop"
     val terminate = "terminate"
 
-    val values = IndexedSeq(hibernate, stop, terminate)
+    val values = js.Object.freeze(js.Array(hibernate, stop, terminate))
   }
 
   /**
@@ -18137,14 +18150,14 @@ package ec2 {
     val spot        = "spot"
     val `on-demand` = "on-demand"
 
-    val values = IndexedSeq(spot, `on-demand`)
+    val values = js.Object.freeze(js.Array(spot, `on-demand`))
   }
 
   object InstanceLifecycleTypeEnum {
     val spot      = "spot"
     val scheduled = "scheduled"
 
-    val values = IndexedSeq(spot, scheduled)
+    val values = js.Object.freeze(js.Array(spot, scheduled))
   }
 
   /**
@@ -18172,7 +18185,7 @@ package ec2 {
     val open     = "open"
     val targeted = "targeted"
 
-    val values = IndexedSeq(open, targeted)
+    val values = js.Object.freeze(js.Array(open, targeted))
   }
 
   /**
@@ -18470,7 +18483,7 @@ package ec2 {
     val stopping        = "stopping"
     val stopped         = "stopped"
 
-    val values = IndexedSeq(pending, running, `shutting-down`, terminated, stopping, stopped)
+    val values = js.Object.freeze(js.Array(pending, running, `shutting-down`, terminated, stopping, stopped))
   }
 
   /**
@@ -18809,230 +18822,232 @@ package ec2 {
     val `a1.2xlarge`    = "a1.2xlarge"
     val `a1.4xlarge`    = "a1.4xlarge"
 
-    val values = IndexedSeq(
-      `t1.micro`,
-      `t2.nano`,
-      `t2.micro`,
-      `t2.small`,
-      `t2.medium`,
-      `t2.large`,
-      `t2.xlarge`,
-      `t2.2xlarge`,
-      `t3.nano`,
-      `t3.micro`,
-      `t3.small`,
-      `t3.medium`,
-      `t3.large`,
-      `t3.xlarge`,
-      `t3.2xlarge`,
-      `t3a.nano`,
-      `t3a.micro`,
-      `t3a.small`,
-      `t3a.medium`,
-      `t3a.large`,
-      `t3a.xlarge`,
-      `t3a.2xlarge`,
-      `m1.small`,
-      `m1.medium`,
-      `m1.large`,
-      `m1.xlarge`,
-      `m3.medium`,
-      `m3.large`,
-      `m3.xlarge`,
-      `m3.2xlarge`,
-      `m4.large`,
-      `m4.xlarge`,
-      `m4.2xlarge`,
-      `m4.4xlarge`,
-      `m4.10xlarge`,
-      `m4.16xlarge`,
-      `m2.xlarge`,
-      `m2.2xlarge`,
-      `m2.4xlarge`,
-      `cr1.8xlarge`,
-      `r3.large`,
-      `r3.xlarge`,
-      `r3.2xlarge`,
-      `r3.4xlarge`,
-      `r3.8xlarge`,
-      `r4.large`,
-      `r4.xlarge`,
-      `r4.2xlarge`,
-      `r4.4xlarge`,
-      `r4.8xlarge`,
-      `r4.16xlarge`,
-      `r5.large`,
-      `r5.xlarge`,
-      `r5.2xlarge`,
-      `r5.4xlarge`,
-      `r5.8xlarge`,
-      `r5.12xlarge`,
-      `r5.16xlarge`,
-      `r5.24xlarge`,
-      `r5.metal`,
-      `r5a.large`,
-      `r5a.xlarge`,
-      `r5a.2xlarge`,
-      `r5a.4xlarge`,
-      `r5a.8xlarge`,
-      `r5a.12xlarge`,
-      `r5a.16xlarge`,
-      `r5a.24xlarge`,
-      `r5d.large`,
-      `r5d.xlarge`,
-      `r5d.2xlarge`,
-      `r5d.4xlarge`,
-      `r5d.8xlarge`,
-      `r5d.12xlarge`,
-      `r5d.16xlarge`,
-      `r5d.24xlarge`,
-      `r5d.metal`,
-      `r5ad.large`,
-      `r5ad.xlarge`,
-      `r5ad.2xlarge`,
-      `r5ad.4xlarge`,
-      `r5ad.8xlarge`,
-      `r5ad.12xlarge`,
-      `r5ad.16xlarge`,
-      `r5ad.24xlarge`,
-      `x1.16xlarge`,
-      `x1.32xlarge`,
-      `x1e.xlarge`,
-      `x1e.2xlarge`,
-      `x1e.4xlarge`,
-      `x1e.8xlarge`,
-      `x1e.16xlarge`,
-      `x1e.32xlarge`,
-      `i2.xlarge`,
-      `i2.2xlarge`,
-      `i2.4xlarge`,
-      `i2.8xlarge`,
-      `i3.large`,
-      `i3.xlarge`,
-      `i3.2xlarge`,
-      `i3.4xlarge`,
-      `i3.8xlarge`,
-      `i3.16xlarge`,
-      `i3.metal`,
-      `i3en.large`,
-      `i3en.xlarge`,
-      `i3en.2xlarge`,
-      `i3en.3xlarge`,
-      `i3en.6xlarge`,
-      `i3en.12xlarge`,
-      `i3en.24xlarge`,
-      `i3en.metal`,
-      `hi1.4xlarge`,
-      `hs1.8xlarge`,
-      `c1.medium`,
-      `c1.xlarge`,
-      `c3.large`,
-      `c3.xlarge`,
-      `c3.2xlarge`,
-      `c3.4xlarge`,
-      `c3.8xlarge`,
-      `c4.large`,
-      `c4.xlarge`,
-      `c4.2xlarge`,
-      `c4.4xlarge`,
-      `c4.8xlarge`,
-      `c5.large`,
-      `c5.xlarge`,
-      `c5.2xlarge`,
-      `c5.4xlarge`,
-      `c5.9xlarge`,
-      `c5.12xlarge`,
-      `c5.18xlarge`,
-      `c5.24xlarge`,
-      `c5.metal`,
-      `c5d.large`,
-      `c5d.xlarge`,
-      `c5d.2xlarge`,
-      `c5d.4xlarge`,
-      `c5d.9xlarge`,
-      `c5d.18xlarge`,
-      `c5n.large`,
-      `c5n.xlarge`,
-      `c5n.2xlarge`,
-      `c5n.4xlarge`,
-      `c5n.9xlarge`,
-      `c5n.18xlarge`,
-      `cc1.4xlarge`,
-      `cc2.8xlarge`,
-      `g2.2xlarge`,
-      `g2.8xlarge`,
-      `g3.4xlarge`,
-      `g3.8xlarge`,
-      `g3.16xlarge`,
-      `g3s.xlarge`,
-      `cg1.4xlarge`,
-      `p2.xlarge`,
-      `p2.8xlarge`,
-      `p2.16xlarge`,
-      `p3.2xlarge`,
-      `p3.8xlarge`,
-      `p3.16xlarge`,
-      `p3dn.24xlarge`,
-      `d2.xlarge`,
-      `d2.2xlarge`,
-      `d2.4xlarge`,
-      `d2.8xlarge`,
-      `f1.2xlarge`,
-      `f1.4xlarge`,
-      `f1.16xlarge`,
-      `m5.large`,
-      `m5.xlarge`,
-      `m5.2xlarge`,
-      `m5.4xlarge`,
-      `m5.8xlarge`,
-      `m5.12xlarge`,
-      `m5.16xlarge`,
-      `m5.24xlarge`,
-      `m5.metal`,
-      `m5a.large`,
-      `m5a.xlarge`,
-      `m5a.2xlarge`,
-      `m5a.4xlarge`,
-      `m5a.8xlarge`,
-      `m5a.12xlarge`,
-      `m5a.16xlarge`,
-      `m5a.24xlarge`,
-      `m5d.large`,
-      `m5d.xlarge`,
-      `m5d.2xlarge`,
-      `m5d.4xlarge`,
-      `m5d.8xlarge`,
-      `m5d.12xlarge`,
-      `m5d.16xlarge`,
-      `m5d.24xlarge`,
-      `m5d.metal`,
-      `m5ad.large`,
-      `m5ad.xlarge`,
-      `m5ad.2xlarge`,
-      `m5ad.4xlarge`,
-      `m5ad.8xlarge`,
-      `m5ad.12xlarge`,
-      `m5ad.16xlarge`,
-      `m5ad.24xlarge`,
-      `h1.2xlarge`,
-      `h1.4xlarge`,
-      `h1.8xlarge`,
-      `h1.16xlarge`,
-      `z1d.large`,
-      `z1d.xlarge`,
-      `z1d.2xlarge`,
-      `z1d.3xlarge`,
-      `z1d.6xlarge`,
-      `z1d.12xlarge`,
-      `z1d.metal`,
-      `u-6tb1.metal`,
-      `u-9tb1.metal`,
-      `u-12tb1.metal`,
-      `a1.medium`,
-      `a1.large`,
-      `a1.xlarge`,
-      `a1.2xlarge`,
-      `a1.4xlarge`
+    val values = js.Object.freeze(
+      js.Array(
+        `t1.micro`,
+        `t2.nano`,
+        `t2.micro`,
+        `t2.small`,
+        `t2.medium`,
+        `t2.large`,
+        `t2.xlarge`,
+        `t2.2xlarge`,
+        `t3.nano`,
+        `t3.micro`,
+        `t3.small`,
+        `t3.medium`,
+        `t3.large`,
+        `t3.xlarge`,
+        `t3.2xlarge`,
+        `t3a.nano`,
+        `t3a.micro`,
+        `t3a.small`,
+        `t3a.medium`,
+        `t3a.large`,
+        `t3a.xlarge`,
+        `t3a.2xlarge`,
+        `m1.small`,
+        `m1.medium`,
+        `m1.large`,
+        `m1.xlarge`,
+        `m3.medium`,
+        `m3.large`,
+        `m3.xlarge`,
+        `m3.2xlarge`,
+        `m4.large`,
+        `m4.xlarge`,
+        `m4.2xlarge`,
+        `m4.4xlarge`,
+        `m4.10xlarge`,
+        `m4.16xlarge`,
+        `m2.xlarge`,
+        `m2.2xlarge`,
+        `m2.4xlarge`,
+        `cr1.8xlarge`,
+        `r3.large`,
+        `r3.xlarge`,
+        `r3.2xlarge`,
+        `r3.4xlarge`,
+        `r3.8xlarge`,
+        `r4.large`,
+        `r4.xlarge`,
+        `r4.2xlarge`,
+        `r4.4xlarge`,
+        `r4.8xlarge`,
+        `r4.16xlarge`,
+        `r5.large`,
+        `r5.xlarge`,
+        `r5.2xlarge`,
+        `r5.4xlarge`,
+        `r5.8xlarge`,
+        `r5.12xlarge`,
+        `r5.16xlarge`,
+        `r5.24xlarge`,
+        `r5.metal`,
+        `r5a.large`,
+        `r5a.xlarge`,
+        `r5a.2xlarge`,
+        `r5a.4xlarge`,
+        `r5a.8xlarge`,
+        `r5a.12xlarge`,
+        `r5a.16xlarge`,
+        `r5a.24xlarge`,
+        `r5d.large`,
+        `r5d.xlarge`,
+        `r5d.2xlarge`,
+        `r5d.4xlarge`,
+        `r5d.8xlarge`,
+        `r5d.12xlarge`,
+        `r5d.16xlarge`,
+        `r5d.24xlarge`,
+        `r5d.metal`,
+        `r5ad.large`,
+        `r5ad.xlarge`,
+        `r5ad.2xlarge`,
+        `r5ad.4xlarge`,
+        `r5ad.8xlarge`,
+        `r5ad.12xlarge`,
+        `r5ad.16xlarge`,
+        `r5ad.24xlarge`,
+        `x1.16xlarge`,
+        `x1.32xlarge`,
+        `x1e.xlarge`,
+        `x1e.2xlarge`,
+        `x1e.4xlarge`,
+        `x1e.8xlarge`,
+        `x1e.16xlarge`,
+        `x1e.32xlarge`,
+        `i2.xlarge`,
+        `i2.2xlarge`,
+        `i2.4xlarge`,
+        `i2.8xlarge`,
+        `i3.large`,
+        `i3.xlarge`,
+        `i3.2xlarge`,
+        `i3.4xlarge`,
+        `i3.8xlarge`,
+        `i3.16xlarge`,
+        `i3.metal`,
+        `i3en.large`,
+        `i3en.xlarge`,
+        `i3en.2xlarge`,
+        `i3en.3xlarge`,
+        `i3en.6xlarge`,
+        `i3en.12xlarge`,
+        `i3en.24xlarge`,
+        `i3en.metal`,
+        `hi1.4xlarge`,
+        `hs1.8xlarge`,
+        `c1.medium`,
+        `c1.xlarge`,
+        `c3.large`,
+        `c3.xlarge`,
+        `c3.2xlarge`,
+        `c3.4xlarge`,
+        `c3.8xlarge`,
+        `c4.large`,
+        `c4.xlarge`,
+        `c4.2xlarge`,
+        `c4.4xlarge`,
+        `c4.8xlarge`,
+        `c5.large`,
+        `c5.xlarge`,
+        `c5.2xlarge`,
+        `c5.4xlarge`,
+        `c5.9xlarge`,
+        `c5.12xlarge`,
+        `c5.18xlarge`,
+        `c5.24xlarge`,
+        `c5.metal`,
+        `c5d.large`,
+        `c5d.xlarge`,
+        `c5d.2xlarge`,
+        `c5d.4xlarge`,
+        `c5d.9xlarge`,
+        `c5d.18xlarge`,
+        `c5n.large`,
+        `c5n.xlarge`,
+        `c5n.2xlarge`,
+        `c5n.4xlarge`,
+        `c5n.9xlarge`,
+        `c5n.18xlarge`,
+        `cc1.4xlarge`,
+        `cc2.8xlarge`,
+        `g2.2xlarge`,
+        `g2.8xlarge`,
+        `g3.4xlarge`,
+        `g3.8xlarge`,
+        `g3.16xlarge`,
+        `g3s.xlarge`,
+        `cg1.4xlarge`,
+        `p2.xlarge`,
+        `p2.8xlarge`,
+        `p2.16xlarge`,
+        `p3.2xlarge`,
+        `p3.8xlarge`,
+        `p3.16xlarge`,
+        `p3dn.24xlarge`,
+        `d2.xlarge`,
+        `d2.2xlarge`,
+        `d2.4xlarge`,
+        `d2.8xlarge`,
+        `f1.2xlarge`,
+        `f1.4xlarge`,
+        `f1.16xlarge`,
+        `m5.large`,
+        `m5.xlarge`,
+        `m5.2xlarge`,
+        `m5.4xlarge`,
+        `m5.8xlarge`,
+        `m5.12xlarge`,
+        `m5.16xlarge`,
+        `m5.24xlarge`,
+        `m5.metal`,
+        `m5a.large`,
+        `m5a.xlarge`,
+        `m5a.2xlarge`,
+        `m5a.4xlarge`,
+        `m5a.8xlarge`,
+        `m5a.12xlarge`,
+        `m5a.16xlarge`,
+        `m5a.24xlarge`,
+        `m5d.large`,
+        `m5d.xlarge`,
+        `m5d.2xlarge`,
+        `m5d.4xlarge`,
+        `m5d.8xlarge`,
+        `m5d.12xlarge`,
+        `m5d.16xlarge`,
+        `m5d.24xlarge`,
+        `m5d.metal`,
+        `m5ad.large`,
+        `m5ad.xlarge`,
+        `m5ad.2xlarge`,
+        `m5ad.4xlarge`,
+        `m5ad.8xlarge`,
+        `m5ad.12xlarge`,
+        `m5ad.16xlarge`,
+        `m5ad.24xlarge`,
+        `h1.2xlarge`,
+        `h1.4xlarge`,
+        `h1.8xlarge`,
+        `h1.16xlarge`,
+        `z1d.large`,
+        `z1d.xlarge`,
+        `z1d.2xlarge`,
+        `z1d.3xlarge`,
+        `z1d.6xlarge`,
+        `z1d.12xlarge`,
+        `z1d.metal`,
+        `u-6tb1.metal`,
+        `u-9tb1.metal`,
+        `u-12tb1.metal`,
+        `a1.medium`,
+        `a1.large`,
+        `a1.xlarge`,
+        `a1.2xlarge`,
+        `a1.4xlarge`
+      )
     )
   }
 
@@ -19061,7 +19076,7 @@ package ec2 {
     val `INSTANCE-ATTACH` = "INSTANCE-ATTACH"
     val `EIP-ASSOCIATE`   = "EIP-ASSOCIATE"
 
-    val values = IndexedSeq(`INSTANCE-ATTACH`, `EIP-ASSOCIATE`)
+    val values = js.Object.freeze(js.Array(`INSTANCE-ATTACH`, `EIP-ASSOCIATE`))
   }
 
   /**
@@ -19212,7 +19227,7 @@ package ec2 {
     val enable  = "enable"
     val disable = "disable"
 
-    val values = IndexedSeq(enable, disable)
+    val values = js.Object.freeze(js.Array(enable, disable))
   }
 
   /**
@@ -19700,13 +19715,15 @@ package ec2 {
     val launchTemplateVersionDoesNotExist = "launchTemplateVersionDoesNotExist"
     val unexpectedError                   = "unexpectedError"
 
-    val values = IndexedSeq(
-      launchTemplateIdDoesNotExist,
-      launchTemplateIdMalformed,
-      launchTemplateNameDoesNotExist,
-      launchTemplateNameMalformed,
-      launchTemplateVersionDoesNotExist,
-      unexpectedError
+    val values = js.Object.freeze(
+      js.Array(
+        launchTemplateIdDoesNotExist,
+        launchTemplateIdMalformed,
+        launchTemplateNameDoesNotExist,
+        launchTemplateNameMalformed,
+        launchTemplateVersionDoesNotExist,
+        unexpectedError
+      )
     )
   }
 
@@ -20324,7 +20341,7 @@ package ec2 {
     val cancelled = "cancelled"
     val pending   = "pending"
 
-    val values = IndexedSeq(available, sold, cancelled, pending)
+    val values = js.Object.freeze(js.Array(available, sold, cancelled, pending))
   }
 
   object ListingStatusEnum {
@@ -20333,7 +20350,7 @@ package ec2 {
     val cancelled = "cancelled"
     val closed    = "closed"
 
-    val values = IndexedSeq(active, pending, cancelled, closed)
+    val values = js.Object.freeze(js.Array(active, pending, cancelled, closed))
   }
 
   /**
@@ -20424,13 +20441,13 @@ package ec2 {
     val `cloud-watch-logs` = "cloud-watch-logs"
     val s3                 = "s3"
 
-    val values = IndexedSeq(`cloud-watch-logs`, s3)
+    val values = js.Object.freeze(js.Array(`cloud-watch-logs`, s3))
   }
 
   object MarketTypeEnum {
     val spot = "spot"
 
-    val values = IndexedSeq(spot)
+    val values = js.Object.freeze(js.Array(spot))
   }
 
   @js.native
@@ -22007,7 +22024,7 @@ package ec2 {
     val enabled   = "enabled"
     val pending   = "pending"
 
-    val values = IndexedSeq(disabled, disabling, enabled, pending)
+    val values = js.Object.freeze(js.Array(disabled, disabling, enabled, pending))
   }
 
   @js.native
@@ -22052,7 +22069,7 @@ package ec2 {
     val movingToVpc        = "movingToVpc"
     val restoringToClassic = "restoringToClassic"
 
-    val values = IndexedSeq(movingToVpc, restoringToClassic)
+    val values = js.Object.freeze(js.Array(movingToVpc, restoringToClassic))
   }
 
   /**
@@ -22158,7 +22175,7 @@ package ec2 {
     val deleting  = "deleting"
     val deleted   = "deleted"
 
-    val values = IndexedSeq(pending, failed, available, deleting, deleted)
+    val values = js.Object.freeze(js.Array(pending, failed, available, deleting, deleted))
   }
 
   /**
@@ -22428,13 +22445,13 @@ package ec2 {
     val sourceDestCheck = "sourceDestCheck"
     val attachment      = "attachment"
 
-    val values = IndexedSeq(description, groupSet, sourceDestCheck, attachment)
+    val values = js.Object.freeze(js.Array(description, groupSet, sourceDestCheck, attachment))
   }
 
   object NetworkInterfaceCreationTypeEnum {
     val efa = "efa"
 
-    val values = IndexedSeq(efa)
+    val values = js.Object.freeze(js.Array(efa))
   }
 
   /**
@@ -22517,7 +22534,7 @@ package ec2 {
     val revoking = "revoking"
     val revoked  = "revoked"
 
-    val values = IndexedSeq(pending, granted, revoking, revoked)
+    val values = js.Object.freeze(js.Array(pending, granted, revoking, revoked))
   }
 
   /**
@@ -22554,7 +22571,7 @@ package ec2 {
     val `in-use`   = "in-use"
     val detaching  = "detaching"
 
-    val values = IndexedSeq(available, associated, attaching, `in-use`, detaching)
+    val values = js.Object.freeze(js.Array(available, associated, attaching, `in-use`, detaching))
   }
 
   object NetworkInterfaceTypeEnum {
@@ -22562,7 +22579,7 @@ package ec2 {
     val natGateway = "natGateway"
     val efa        = "efa"
 
-    val values = IndexedSeq(interface, natGateway, efa)
+    val values = js.Object.freeze(js.Array(interface, natGateway, efa))
   }
 
   @js.native
@@ -22587,7 +22604,7 @@ package ec2 {
     val standard    = "standard"
     val convertible = "convertible"
 
-    val values = IndexedSeq(standard, convertible)
+    val values = js.Object.freeze(js.Array(standard, convertible))
   }
 
   object OfferingTypeValuesEnum {
@@ -22598,13 +22615,15 @@ package ec2 {
     val `Partial Upfront`    = "Partial Upfront"
     val `All Upfront`        = "All Upfront"
 
-    val values = IndexedSeq(
-      `Heavy Utilization`,
-      `Medium Utilization`,
-      `Light Utilization`,
-      `No Upfront`,
-      `Partial Upfront`,
-      `All Upfront`
+    val values = js.Object.freeze(
+      js.Array(
+        `Heavy Utilization`,
+        `Medium Utilization`,
+        `Light Utilization`,
+        `No Upfront`,
+        `Partial Upfront`,
+        `All Upfront`
+      )
     )
   }
 
@@ -22612,7 +22631,7 @@ package ec2 {
     val lowestPrice = "lowestPrice"
     val prioritized = "prioritized"
 
-    val values = IndexedSeq(lowestPrice, prioritized)
+    val values = js.Object.freeze(js.Array(lowestPrice, prioritized))
   }
 
   /**
@@ -22679,7 +22698,7 @@ package ec2 {
     val add    = "add"
     val remove = "remove"
 
-    val values = IndexedSeq(add, remove)
+    val values = js.Object.freeze(js.Array(add, remove))
   }
 
   object PaymentOptionEnum {
@@ -22687,7 +22706,7 @@ package ec2 {
     val PartialUpfront = "PartialUpfront"
     val NoUpfront      = "NoUpfront"
 
-    val values = IndexedSeq(AllUpfront, PartialUpfront, NoUpfront)
+    val values = js.Object.freeze(js.Array(AllUpfront, PartialUpfront, NoUpfront))
   }
 
   /**
@@ -22780,7 +22799,7 @@ package ec2 {
   object PermissionGroupEnum {
     val all = "all"
 
-    val values = IndexedSeq(all)
+    val values = js.Object.freeze(js.Array(all))
   }
 
   /**
@@ -22852,7 +22871,7 @@ package ec2 {
     val deleting  = "deleting"
     val deleted   = "deleted"
 
-    val values = IndexedSeq(pending, available, deleting, deleted)
+    val values = js.Object.freeze(js.Array(pending, available, deleting, deleted))
   }
 
   /**
@@ -22878,13 +22897,13 @@ package ec2 {
     val spread    = "spread"
     val partition = "partition"
 
-    val values = IndexedSeq(cluster, spread, partition)
+    val values = js.Object.freeze(js.Array(cluster, spread, partition))
   }
 
   object PlatformValuesEnum {
     val Windows = "Windows"
 
-    val values = IndexedSeq(Windows)
+    val values = js.Object.freeze(js.Array(Windows))
   }
 
   /**
@@ -23054,7 +23073,7 @@ package ec2 {
     val User             = "User"
     val Role             = "Role"
 
-    val values = IndexedSeq(All, Service, OrganizationUnit, Account, User, Role)
+    val values = js.Object.freeze(js.Array(All, Service, OrganizationUnit, Account, User, Role))
   }
 
   /**
@@ -23103,7 +23122,7 @@ package ec2 {
     val devpay      = "devpay"
     val marketplace = "marketplace"
 
-    val values = IndexedSeq(devpay, marketplace)
+    val values = js.Object.freeze(js.Array(devpay, marketplace))
   }
 
   /**
@@ -23467,7 +23486,7 @@ package ec2 {
     val Windows                   = "Windows"
     val `Windows (Amazon VPC)`    = "Windows (Amazon VPC)"
 
-    val values = IndexedSeq(`Linux/UNIX`, `Linux/UNIX (Amazon VPC)`, Windows, `Windows (Amazon VPC)`)
+    val values = js.Object.freeze(js.Array(`Linux/UNIX`, `Linux/UNIX (Amazon VPC)`, Windows, `Windows (Amazon VPC)`))
   }
 
   @js.native
@@ -23514,7 +23533,7 @@ package ec2 {
   object RecurringChargeFrequencyEnum {
     val Hourly = "Hourly"
 
-    val values = IndexedSeq(Hourly)
+    val values = js.Object.freeze(js.Array(Hourly))
   }
 
   /**
@@ -24038,16 +24057,18 @@ package ec2 {
     val `performance-other`          = "performance-other"
     val other                        = "other"
 
-    val values = IndexedSeq(
-      `instance-stuck-in-state`,
-      unresponsive,
-      `not-accepting-credentials`,
-      `password-not-available`,
-      `performance-network`,
-      `performance-instance-store`,
-      `performance-ebs-volume`,
-      `performance-other`,
-      other
+    val values = js.Object.freeze(
+      js.Array(
+        `instance-stuck-in-state`,
+        unresponsive,
+        `not-accepting-credentials`,
+        `password-not-available`,
+        `performance-network`,
+        `performance-instance-store`,
+        `performance-ebs-volume`,
+        `performance-other`,
+        other
+      )
     )
   }
 
@@ -24090,7 +24111,7 @@ package ec2 {
     val ok       = "ok"
     val impaired = "impaired"
 
-    val values = IndexedSeq(ok, impaired)
+    val values = js.Object.freeze(js.Array(ok, impaired))
   }
 
   /**
@@ -24401,7 +24422,7 @@ package ec2 {
     val active            = "active"
     val retired           = "retired"
 
-    val values = IndexedSeq(`payment-pending`, `payment-failed`, active, retired)
+    val values = js.Object.freeze(js.Array(`payment-pending`, `payment-failed`, active, retired))
   }
 
   /**
@@ -24476,7 +24497,7 @@ package ec2 {
     val `payment-failed`  = "payment-failed"
     val retired           = "retired"
 
-    val values = IndexedSeq(`payment-pending`, active, `payment-failed`, retired)
+    val values = js.Object.freeze(js.Array(`payment-pending`, active, `payment-failed`, retired))
   }
 
   /**
@@ -24799,7 +24820,7 @@ package ec2 {
   object ResetFpgaImageAttributeNameEnum {
     val loadPermission = "loadPermission"
 
-    val values = IndexedSeq(loadPermission)
+    val values = js.Object.freeze(js.Array(loadPermission))
   }
 
   @js.native
@@ -24843,7 +24864,7 @@ package ec2 {
   object ResetImageAttributeNameEnum {
     val launchPermission = "launchPermission"
 
-    val values = IndexedSeq(launchPermission)
+    val values = js.Object.freeze(js.Array(launchPermission))
   }
 
   /**
@@ -24981,39 +25002,41 @@ package ec2 {
     val `vpn-connection`              = "vpn-connection"
     val `vpn-gateway`                 = "vpn-gateway"
 
-    val values = IndexedSeq(
-      `client-vpn-endpoint`,
-      `customer-gateway`,
-      `dedicated-host`,
-      `dhcp-options`,
-      `elastic-ip`,
-      fleet,
-      `fpga-image`,
-      `host-reservation`,
-      image,
-      instance,
-      `internet-gateway`,
-      `launch-template`,
-      natgateway,
-      `network-acl`,
-      `network-interface`,
-      `reserved-instances`,
-      `route-table`,
-      `security-group`,
-      snapshot,
-      `spot-instances-request`,
-      subnet,
-      `traffic-mirror-filter`,
-      `traffic-mirror-session`,
-      `traffic-mirror-target`,
-      `transit-gateway`,
-      `transit-gateway-attachment`,
-      `transit-gateway-route-table`,
-      volume,
-      vpc,
-      `vpc-peering-connection`,
-      `vpn-connection`,
-      `vpn-gateway`
+    val values = js.Object.freeze(
+      js.Array(
+        `client-vpn-endpoint`,
+        `customer-gateway`,
+        `dedicated-host`,
+        `dhcp-options`,
+        `elastic-ip`,
+        fleet,
+        `fpga-image`,
+        `host-reservation`,
+        image,
+        instance,
+        `internet-gateway`,
+        `launch-template`,
+        natgateway,
+        `network-acl`,
+        `network-interface`,
+        `reserved-instances`,
+        `route-table`,
+        `security-group`,
+        snapshot,
+        `spot-instances-request`,
+        subnet,
+        `traffic-mirror-filter`,
+        `traffic-mirror-session`,
+        `traffic-mirror-target`,
+        `transit-gateway`,
+        `transit-gateway-attachment`,
+        `transit-gateway-route-table`,
+        volume,
+        vpc,
+        `vpc-peering-connection`,
+        `vpn-connection`,
+        `vpn-gateway`
+      )
     )
   }
 
@@ -25359,14 +25382,14 @@ package ec2 {
     val CreateRoute               = "CreateRoute"
     val EnableVgwRoutePropagation = "EnableVgwRoutePropagation"
 
-    val values = IndexedSeq(CreateRouteTable, CreateRoute, EnableVgwRoutePropagation)
+    val values = js.Object.freeze(js.Array(CreateRouteTable, CreateRoute, EnableVgwRoutePropagation))
   }
 
   object RouteStateEnum {
     val active    = "active"
     val blackhole = "blackhole"
 
-    val values = IndexedSeq(active, blackhole)
+    val values = js.Object.freeze(js.Array(active, blackhole))
   }
 
   /**
@@ -25436,7 +25459,7 @@ package ec2 {
     val allow = "allow"
     val deny  = "deny"
 
-    val values = IndexedSeq(allow, deny)
+    val values = js.Object.freeze(js.Array(allow, deny))
   }
 
   /**
@@ -26361,14 +26384,14 @@ package ec2 {
     val Deleted   = "Deleted"
     val Failed    = "Failed"
 
-    val values = IndexedSeq(Pending, Available, Deleting, Deleted, Failed)
+    val values = js.Object.freeze(js.Array(Pending, Available, Deleting, Deleted, Failed))
   }
 
   object ServiceTypeEnum {
     val Interface = "Interface"
     val Gateway   = "Gateway"
 
-    val values = IndexedSeq(Interface, Gateway)
+    val values = js.Object.freeze(js.Array(Interface, Gateway))
   }
 
   /**
@@ -26393,7 +26416,7 @@ package ec2 {
     val stop      = "stop"
     val terminate = "terminate"
 
-    val values = IndexedSeq(stop, terminate)
+    val values = js.Object.freeze(js.Array(stop, terminate))
   }
 
   /**
@@ -26501,7 +26524,7 @@ package ec2 {
     val productCodes           = "productCodes"
     val createVolumePermission = "createVolumePermission"
 
-    val values = IndexedSeq(productCodes, createVolumePermission)
+    val values = js.Object.freeze(js.Array(productCodes, createVolumePermission))
   }
 
   /**
@@ -26626,7 +26649,7 @@ package ec2 {
     val completed = "completed"
     val error     = "error"
 
-    val values = IndexedSeq(pending, completed, error)
+    val values = js.Object.freeze(js.Array(pending, completed, error))
   }
 
   /**
@@ -26682,7 +26705,7 @@ package ec2 {
     val diversified          = "diversified"
     val `capacity-optimized` = "capacity-optimized"
 
-    val values = IndexedSeq(`lowest-price`, diversified, `capacity-optimized`)
+    val values = js.Object.freeze(js.Array(`lowest-price`, diversified, `capacity-optimized`))
   }
 
   /**
@@ -26947,7 +26970,7 @@ package ec2 {
     val stop      = "stop"
     val terminate = "terminate"
 
-    val values = IndexedSeq(hibernate, stop, terminate)
+    val values = js.Object.freeze(js.Array(hibernate, stop, terminate))
   }
 
   /**
@@ -27031,7 +27054,7 @@ package ec2 {
     val cancelled = "cancelled"
     val failed    = "failed"
 
-    val values = IndexedSeq(open, active, closed, cancelled, failed)
+    val values = js.Object.freeze(js.Array(open, active, closed, cancelled, failed))
   }
 
   /**
@@ -27083,7 +27106,7 @@ package ec2 {
     val `one-time` = "one-time"
     val persistent = "persistent"
 
-    val values = IndexedSeq(`one-time`, persistent)
+    val values = js.Object.freeze(js.Array(`one-time`, persistent))
   }
 
   /**
@@ -27362,7 +27385,8 @@ package ec2 {
     val Failed            = "Failed"
     val Expired           = "Expired"
 
-    val values = IndexedSeq(PendingAcceptance, Pending, Available, Deleting, Deleted, Rejected, Failed, Expired)
+    val values =
+      js.Object.freeze(js.Array(PendingAcceptance, Pending, Available, Deleting, Deleted, Rejected, Failed, Expired))
   }
 
   /**
@@ -27391,13 +27415,13 @@ package ec2 {
     val InVpc          = "InVpc"
     val InClassic      = "InClassic"
 
-    val values = IndexedSeq(MoveInProgress, InVpc, InClassic)
+    val values = js.Object.freeze(js.Array(MoveInProgress, InVpc, InClassic))
   }
 
   object StatusNameEnum {
     val reachability = "reachability"
 
-    val values = IndexedSeq(reachability)
+    val values = js.Object.freeze(js.Array(reachability))
   }
 
   object StatusTypeEnum {
@@ -27406,7 +27430,7 @@ package ec2 {
     val `insufficient-data` = "insufficient-data"
     val initializing        = "initializing"
 
-    val values = IndexedSeq(passed, failed, `insufficient-data`, initializing)
+    val values = js.Object.freeze(js.Array(passed, failed, `insufficient-data`, initializing))
   }
 
   @js.native
@@ -27575,7 +27599,7 @@ package ec2 {
     val failing        = "failing"
     val failed         = "failed"
 
-    val values = IndexedSeq(associating, associated, disassociating, disassociated, failing, failed)
+    val values = js.Object.freeze(js.Array(associating, associated, disassociating, disassociated, failing, failed))
   }
 
   /**
@@ -27606,7 +27630,7 @@ package ec2 {
     val pending   = "pending"
     val available = "available"
 
-    val values = IndexedSeq(pending, available)
+    val values = js.Object.freeze(js.Array(pending, available))
   }
 
   /**
@@ -27634,7 +27658,7 @@ package ec2 {
     val `not-applicable`    = "not-applicable"
     val initializing        = "initializing"
 
-    val values = IndexedSeq(ok, impaired, `insufficient-data`, `not-applicable`, initializing)
+    val values = js.Object.freeze(js.Array(ok, impaired, `insufficient-data`, `not-applicable`, initializing))
   }
 
   /**
@@ -27902,7 +27926,7 @@ package ec2 {
     val UP   = "UP"
     val DOWN = "DOWN"
 
-    val values = IndexedSeq(UP, DOWN)
+    val values = js.Object.freeze(js.Array(UP, DOWN))
   }
 
   object TenancyEnum {
@@ -27910,7 +27934,7 @@ package ec2 {
     val dedicated = "dedicated"
     val host      = "host"
 
-    val values = IndexedSeq(default, dedicated, host)
+    val values = js.Object.freeze(js.Array(default, dedicated, host))
   }
 
   @js.native
@@ -28023,7 +28047,7 @@ package ec2 {
     val ingress = "ingress"
     val egress  = "egress"
 
-    val values = IndexedSeq(ingress, egress)
+    val values = js.Object.freeze(js.Array(ingress, egress))
   }
 
   /**
@@ -28113,13 +28137,13 @@ package ec2 {
     val protocol                 = "protocol"
     val description              = "description"
 
-    val values = IndexedSeq(`destination-port-range`, `source-port-range`, protocol, description)
+    val values = js.Object.freeze(js.Array(`destination-port-range`, `source-port-range`, protocol, description))
   }
 
   object TrafficMirrorNetworkServiceEnum {
     val `amazon-dns` = "amazon-dns"
 
-    val values = IndexedSeq(`amazon-dns`)
+    val values = js.Object.freeze(js.Array(`amazon-dns`))
   }
 
   /**
@@ -28168,7 +28192,7 @@ package ec2 {
     val accept = "accept"
     val reject = "reject"
 
-    val values = IndexedSeq(accept, reject)
+    val values = js.Object.freeze(js.Array(accept, reject))
   }
 
   /**
@@ -28221,7 +28245,7 @@ package ec2 {
     val description          = "description"
     val `virtual-network-id` = "virtual-network-id"
 
-    val values = IndexedSeq(`packet-length`, description, `virtual-network-id`)
+    val values = js.Object.freeze(js.Array(`packet-length`, description, `virtual-network-id`))
   }
 
   /**
@@ -28264,7 +28288,7 @@ package ec2 {
     val `network-interface`     = "network-interface"
     val `network-load-balancer` = "network-load-balancer"
 
-    val values = IndexedSeq(`network-interface`, `network-load-balancer`)
+    val values = js.Object.freeze(js.Array(`network-interface`, `network-load-balancer`))
   }
 
   object TrafficTypeEnum {
@@ -28272,7 +28296,7 @@ package ec2 {
     val REJECT = "REJECT"
     val ALL    = "ALL"
 
-    val values = IndexedSeq(ACCEPT, REJECT, ALL)
+    val values = js.Object.freeze(js.Array(ACCEPT, REJECT, ALL))
   }
 
   /**
@@ -28350,7 +28374,7 @@ package ec2 {
     val disassociating = "disassociating"
     val disassociated  = "disassociated"
 
-    val values = IndexedSeq(associating, associated, disassociating, disassociated)
+    val values = js.Object.freeze(js.Array(associating, associated, disassociating, disassociated))
   }
 
   /**
@@ -28445,7 +28469,7 @@ package ec2 {
     val vpn                      = "vpn"
     val `direct-connect-gateway` = "direct-connect-gateway"
 
-    val values = IndexedSeq(vpc, vpn, `direct-connect-gateway`)
+    val values = js.Object.freeze(js.Array(vpc, vpn, `direct-connect-gateway`))
   }
 
   object TransitGatewayAttachmentStateEnum {
@@ -28461,18 +28485,20 @@ package ec2 {
     val rejecting         = "rejecting"
     val failing           = "failing"
 
-    val values = IndexedSeq(
-      pendingAcceptance,
-      rollingBack,
-      pending,
-      available,
-      modifying,
-      deleting,
-      deleted,
-      failed,
-      rejected,
-      rejecting,
-      failing
+    val values = js.Object.freeze(
+      js.Array(
+        pendingAcceptance,
+        rollingBack,
+        pending,
+        available,
+        modifying,
+        deleting,
+        deleted,
+        failed,
+        rejected,
+        rejecting,
+        failing
+      )
     )
   }
 
@@ -28559,7 +28585,7 @@ package ec2 {
     val disabling = "disabling"
     val disabled  = "disabled"
 
-    val values = IndexedSeq(enabling, enabled, disabling, disabled)
+    val values = js.Object.freeze(js.Array(enabling, enabled, disabling, disabled))
   }
 
   /**
@@ -28657,7 +28683,7 @@ package ec2 {
     val deleting  = "deleting"
     val deleted   = "deleted"
 
-    val values = IndexedSeq(pending, active, blackhole, deleting, deleted)
+    val values = js.Object.freeze(js.Array(pending, active, blackhole, deleting, deleted))
   }
 
   /**
@@ -28760,14 +28786,14 @@ package ec2 {
     val deleting  = "deleting"
     val deleted   = "deleted"
 
-    val values = IndexedSeq(pending, available, deleting, deleted)
+    val values = js.Object.freeze(js.Array(pending, available, deleting, deleted))
   }
 
   object TransitGatewayRouteTypeEnum {
     val static     = "static"
     val propagated = "propagated"
 
-    val values = IndexedSeq(static, propagated)
+    val values = js.Object.freeze(js.Array(static, propagated))
   }
 
   object TransitGatewayStateEnum {
@@ -28777,7 +28803,7 @@ package ec2 {
     val deleting  = "deleting"
     val deleted   = "deleted"
 
-    val values = IndexedSeq(pending, available, modifying, deleting, deleted)
+    val values = js.Object.freeze(js.Array(pending, available, modifying, deleting, deleted))
   }
 
   /**
@@ -28847,7 +28873,7 @@ package ec2 {
     val tcp = "tcp"
     val udp = "udp"
 
-    val values = IndexedSeq(tcp, udp)
+    val values = js.Object.freeze(js.Array(tcp, udp))
   }
 
   @js.native
@@ -28952,11 +28978,13 @@ package ec2 {
     val IncorrectInstanceState                     = "IncorrectInstanceState"
     val `InstanceCreditSpecification.NotSupported` = "InstanceCreditSpecification.NotSupported"
 
-    val values = IndexedSeq(
-      `InvalidInstanceID.Malformed`,
-      `InvalidInstanceID.NotFound`,
-      IncorrectInstanceState,
-      `InstanceCreditSpecification.NotSupported`
+    val values = js.Object.freeze(
+      js.Array(
+        `InvalidInstanceID.Malformed`,
+        `InvalidInstanceID.NotFound`,
+        IncorrectInstanceState,
+        `InstanceCreditSpecification.NotSupported`
+      )
     )
   }
 
@@ -29259,7 +29287,7 @@ package ec2 {
     val hvm         = "hvm"
     val paravirtual = "paravirtual"
 
-    val values = IndexedSeq(hvm, paravirtual)
+    val values = js.Object.freeze(js.Array(hvm, paravirtual))
   }
 
   /**
@@ -29353,14 +29381,14 @@ package ec2 {
     val detached  = "detached"
     val busy      = "busy"
 
-    val values = IndexedSeq(attaching, attached, detaching, detached, busy)
+    val values = js.Object.freeze(js.Array(attaching, attached, detaching, detached, busy))
   }
 
   object VolumeAttributeNameEnum {
     val autoEnableIO = "autoEnableIO"
     val productCodes = "productCodes"
 
-    val values = IndexedSeq(autoEnableIO, productCodes)
+    val values = js.Object.freeze(js.Array(autoEnableIO, productCodes))
   }
 
   /**
@@ -29441,7 +29469,7 @@ package ec2 {
     val completed  = "completed"
     val failed     = "failed"
 
-    val values = IndexedSeq(modifying, optimizing, completed, failed)
+    val values = js.Object.freeze(js.Array(modifying, optimizing, completed, failed))
   }
 
   object VolumeStateEnum {
@@ -29452,7 +29480,7 @@ package ec2 {
     val deleted   = "deleted"
     val error     = "error"
 
-    val values = IndexedSeq(creating, available, `in-use`, deleting, deleted, error)
+    val values = js.Object.freeze(js.Array(creating, available, `in-use`, deleting, deleted, error))
   }
 
   /**
@@ -29559,7 +29587,7 @@ package ec2 {
     val impaired            = "impaired"
     val `insufficient-data` = "insufficient-data"
 
-    val values = IndexedSeq(ok, impaired, `insufficient-data`)
+    val values = js.Object.freeze(js.Array(ok, impaired, `insufficient-data`))
   }
 
   /**
@@ -29596,7 +29624,7 @@ package ec2 {
     val `io-enabled`     = "io-enabled"
     val `io-performance` = "io-performance"
 
-    val values = IndexedSeq(`io-enabled`, `io-performance`)
+    val values = js.Object.freeze(js.Array(`io-enabled`, `io-performance`))
   }
 
   object VolumeTypeEnum {
@@ -29606,7 +29634,7 @@ package ec2 {
     val sc1      = "sc1"
     val st1      = "st1"
 
-    val values = IndexedSeq(standard, io1, gp2, sc1, st1)
+    val values = js.Object.freeze(js.Array(standard, io1, gp2, sc1, st1))
   }
 
   /**
@@ -29679,7 +29707,7 @@ package ec2 {
     val enableDnsSupport   = "enableDnsSupport"
     val enableDnsHostnames = "enableDnsHostnames"
 
-    val values = IndexedSeq(enableDnsSupport, enableDnsHostnames)
+    val values = js.Object.freeze(js.Array(enableDnsSupport, enableDnsHostnames))
   }
 
   /**
@@ -29735,7 +29763,7 @@ package ec2 {
     val failing        = "failing"
     val failed         = "failed"
 
-    val values = IndexedSeq(associating, associated, disassociating, disassociated, failing, failed)
+    val values = js.Object.freeze(js.Array(associating, associated, disassociating, disassociated, failing, failed))
   }
 
   /**
@@ -29865,7 +29893,7 @@ package ec2 {
     val Interface = "Interface"
     val Gateway   = "Gateway"
 
-    val values = IndexedSeq(Interface, Gateway)
+    val values = js.Object.freeze(js.Array(Interface, Gateway))
   }
 
   /**
@@ -29987,16 +30015,18 @@ package ec2 {
     val provisioning         = "provisioning"
     val deleting             = "deleting"
 
-    val values = IndexedSeq(
-      `initiating-request`,
-      `pending-acceptance`,
-      active,
-      deleted,
-      rejected,
-      failed,
-      expired,
-      provisioning,
-      deleting
+    val values = js.Object.freeze(
+      js.Array(
+        `initiating-request`,
+        `pending-acceptance`,
+        active,
+        deleted,
+        rejected,
+        failed,
+        expired,
+        provisioning,
+        deleting
+      )
     )
   }
 
@@ -30040,13 +30070,13 @@ package ec2 {
     val pending   = "pending"
     val available = "available"
 
-    val values = IndexedSeq(pending, available)
+    val values = js.Object.freeze(js.Array(pending, available))
   }
 
   object VpcTenancyEnum {
     val default = "default"
 
-    val values = IndexedSeq(default)
+    val values = js.Object.freeze(js.Array(default))
   }
 
   /**
@@ -30145,7 +30175,7 @@ package ec2 {
     val enable  = "enable"
     val disable = "disable"
 
-    val values = IndexedSeq(enable, disable)
+    val values = js.Object.freeze(js.Array(enable, disable))
   }
 
   /**
@@ -30187,7 +30217,7 @@ package ec2 {
   object VpnProtocolEnum {
     val openvpn = "openvpn"
 
-    val values = IndexedSeq(openvpn)
+    val values = js.Object.freeze(js.Array(openvpn))
   }
 
   object VpnStateEnum {
@@ -30196,7 +30226,7 @@ package ec2 {
     val deleting  = "deleting"
     val deleted   = "deleted"
 
-    val values = IndexedSeq(pending, available, deleting, deleted)
+    val values = js.Object.freeze(js.Array(pending, available, deleting, deleted))
   }
 
   /**
@@ -30226,7 +30256,7 @@ package ec2 {
   object VpnStaticRouteSourceEnum {
     val Static = "Static"
 
-    val values = IndexedSeq(Static)
+    val values = js.Object.freeze(js.Array(Static))
   }
 
   /**
@@ -30289,6 +30319,6 @@ package ec2 {
     val `Availability Zone` = "Availability Zone"
     val Region              = "Region"
 
-    val values = IndexedSeq(`Availability Zone`, Region)
+    val values = js.Object.freeze(js.Array(`Availability Zone`, Region))
   }
 }
diff --git a/services/ecr/src/main/scala/facade/amazonaws/services/ECR.scala b/services/ecr/src/main/scala/facade/amazonaws/services/ECR.scala
index 48f11a9f4..13a43b3bb 100644
--- a/services/ecr/src/main/scala/facade/amazonaws/services/ECR.scala
+++ b/services/ecr/src/main/scala/facade/amazonaws/services/ECR.scala
@@ -893,7 +893,7 @@ package ecr {
   object ImageActionTypeEnum {
     val EXPIRE = "EXPIRE"
 
-    val values = IndexedSeq(EXPIRE)
+    val values = js.Object.freeze(js.Array(EXPIRE))
   }
 
   /**
@@ -960,8 +960,9 @@ package ecr {
     val ImageNotFound              = "ImageNotFound"
     val MissingDigestAndTag        = "MissingDigestAndTag"
 
-    val values =
-      IndexedSeq(InvalidImageDigest, InvalidImageTag, ImageTagDoesNotMatchDigest, ImageNotFound, MissingDigestAndTag)
+    val values = js.Object.freeze(
+      js.Array(InvalidImageDigest, InvalidImageTag, ImageTagDoesNotMatchDigest, ImageNotFound, MissingDigestAndTag)
+    )
   }
 
   /**
@@ -989,7 +990,7 @@ package ecr {
     val MUTABLE   = "MUTABLE"
     val IMMUTABLE = "IMMUTABLE"
 
-    val values = IndexedSeq(MUTABLE, IMMUTABLE)
+    val values = js.Object.freeze(js.Array(MUTABLE, IMMUTABLE))
   }
 
   @js.native
@@ -1061,7 +1062,7 @@ package ecr {
     val AVAILABLE   = "AVAILABLE"
     val UNAVAILABLE = "UNAVAILABLE"
 
-    val values = IndexedSeq(AVAILABLE, UNAVAILABLE)
+    val values = js.Object.freeze(js.Array(AVAILABLE, UNAVAILABLE))
   }
 
   /**
@@ -1092,7 +1093,7 @@ package ecr {
     val InvalidLayerDigest = "InvalidLayerDigest"
     val MissingLayerDigest = "MissingLayerDigest"
 
-    val values = IndexedSeq(InvalidLayerDigest, MissingLayerDigest)
+    val values = js.Object.freeze(js.Array(InvalidLayerDigest, MissingLayerDigest))
   }
 
   /**
@@ -1149,7 +1150,7 @@ package ecr {
     val EXPIRED     = "EXPIRED"
     val FAILED      = "FAILED"
 
-    val values = IndexedSeq(IN_PROGRESS, COMPLETE, EXPIRED, FAILED)
+    val values = js.Object.freeze(js.Array(IN_PROGRESS, COMPLETE, EXPIRED, FAILED))
   }
 
   /**
@@ -1599,7 +1600,7 @@ package ecr {
     val UNTAGGED = "UNTAGGED"
     val ANY      = "ANY"
 
-    val values = IndexedSeq(TAGGED, UNTAGGED, ANY)
+    val values = js.Object.freeze(js.Array(TAGGED, UNTAGGED, ANY))
   }
 
   @js.native
diff --git a/services/ecs/src/main/scala/facade/amazonaws/services/ECS.scala b/services/ecs/src/main/scala/facade/amazonaws/services/ECS.scala
index d9c08bbdf..9cfc9fce2 100644
--- a/services/ecs/src/main/scala/facade/amazonaws/services/ECS.scala
+++ b/services/ecs/src/main/scala/facade/amazonaws/services/ECS.scala
@@ -293,14 +293,14 @@ package ecs {
     val UPDATED  = "UPDATED"
     val FAILED   = "FAILED"
 
-    val values = IndexedSeq(PENDING, STAGING, STAGED, UPDATING, UPDATED, FAILED)
+    val values = js.Object.freeze(js.Array(PENDING, STAGING, STAGED, UPDATING, UPDATED, FAILED))
   }
 
   object AssignPublicIpEnum {
     val ENABLED  = "ENABLED"
     val DISABLED = "DISABLED"
 
-    val values = IndexedSeq(ENABLED, DISABLED)
+    val values = js.Object.freeze(js.Array(ENABLED, DISABLED))
   }
 
   /**
@@ -459,7 +459,7 @@ package ecs {
     val STATISTICS = "STATISTICS"
     val TAGS       = "TAGS"
 
-    val values = IndexedSeq(STATISTICS, TAGS)
+    val values = js.Object.freeze(js.Array(STATISTICS, TAGS))
   }
 
   /**
@@ -486,21 +486,21 @@ package ecs {
   object ClusterSettingNameEnum {
     val containerInsights = "containerInsights"
 
-    val values = IndexedSeq(containerInsights)
+    val values = js.Object.freeze(js.Array(containerInsights))
   }
 
   object CompatibilityEnum {
     val EC2     = "EC2"
     val FARGATE = "FARGATE"
 
-    val values = IndexedSeq(EC2, FARGATE)
+    val values = js.Object.freeze(js.Array(EC2, FARGATE))
   }
 
   object ConnectivityEnum {
     val CONNECTED    = "CONNECTED"
     val DISCONNECTED = "DISCONNECTED"
 
-    val values = IndexedSeq(CONNECTED, DISCONNECTED)
+    val values = js.Object.freeze(js.Array(CONNECTED, DISCONNECTED))
   }
 
   /**
@@ -563,7 +563,7 @@ package ecs {
     val SUCCESS  = "SUCCESS"
     val HEALTHY  = "HEALTHY"
 
-    val values = IndexedSeq(START, COMPLETE, SUCCESS, HEALTHY)
+    val values = js.Object.freeze(js.Array(START, COMPLETE, SUCCESS, HEALTHY))
   }
 
   /**
@@ -784,7 +784,7 @@ package ecs {
   object ContainerInstanceFieldEnum {
     val TAGS = "TAGS"
 
-    val values = IndexedSeq(TAGS)
+    val values = js.Object.freeze(js.Array(TAGS))
   }
 
   object ContainerInstanceStatusEnum {
@@ -794,7 +794,7 @@ package ecs {
     val DEREGISTERING       = "DEREGISTERING"
     val REGISTRATION_FAILED = "REGISTRATION_FAILED"
 
-    val values = IndexedSeq(ACTIVE, DRAINING, REGISTERING, DEREGISTERING, REGISTRATION_FAILED)
+    val values = js.Object.freeze(js.Array(ACTIVE, DRAINING, REGISTERING, DEREGISTERING, REGISTRATION_FAILED))
   }
 
   /**
@@ -1327,7 +1327,7 @@ package ecs {
     val CODE_DEPLOY = "CODE_DEPLOY"
     val EXTERNAL    = "EXTERNAL"
 
-    val values = IndexedSeq(ECS, CODE_DEPLOY, EXTERNAL)
+    val values = js.Object.freeze(js.Array(ECS, CODE_DEPLOY, EXTERNAL))
   }
 
   @js.native
@@ -1643,7 +1643,7 @@ package ecs {
     val PENDING = "PENDING"
     val STOPPED = "STOPPED"
 
-    val values = IndexedSeq(RUNNING, PENDING, STOPPED)
+    val values = js.Object.freeze(js.Array(RUNNING, PENDING, STOPPED))
   }
 
   /**
@@ -1677,7 +1677,7 @@ package ecs {
     val write = "write"
     val mknod = "mknod"
 
-    val values = IndexedSeq(read, write, mknod)
+    val values = js.Object.freeze(js.Array(read, write, mknod))
   }
 
   @js.native
@@ -1808,7 +1808,7 @@ package ecs {
     val UNHEALTHY = "UNHEALTHY"
     val UNKNOWN   = "UNKNOWN"
 
-    val values = IndexedSeq(HEALTHY, UNHEALTHY, UNKNOWN)
+    val values = js.Object.freeze(js.Array(HEALTHY, UNHEALTHY, UNKNOWN))
   }
 
   /**
@@ -1857,7 +1857,7 @@ package ecs {
     val task = "task"
     val none = "none"
 
-    val values = IndexedSeq(host, task, none)
+    val values = js.Object.freeze(js.Array(host, task, none))
   }
 
   /**
@@ -1906,7 +1906,7 @@ package ecs {
     val EC2     = "EC2"
     val FARGATE = "FARGATE"
 
-    val values = IndexedSeq(EC2, FARGATE)
+    val values = js.Object.freeze(js.Array(EC2, FARGATE))
   }
 
   /**
@@ -2410,7 +2410,7 @@ package ecs {
     val awslogs     = "awslogs"
     val splunk      = "splunk"
 
-    val values = IndexedSeq(`json-file`, syslog, journald, gelf, fluentd, awslogs, splunk)
+    val values = js.Object.freeze(js.Array(`json-file`, syslog, journald, gelf, fluentd, awslogs, splunk))
   }
 
   /**
@@ -2512,14 +2512,14 @@ package ecs {
     val awsvpc = "awsvpc"
     val none   = "none"
 
-    val values = IndexedSeq(bridge, host, awsvpc, none)
+    val values = js.Object.freeze(js.Array(bridge, host, awsvpc, none))
   }
 
   object PidModeEnum {
     val host = "host"
     val task = "task"
 
-    val values = IndexedSeq(host, task)
+    val values = js.Object.freeze(js.Array(host, task))
   }
 
   /**
@@ -2547,7 +2547,7 @@ package ecs {
     val distinctInstance = "distinctInstance"
     val memberOf         = "memberOf"
 
-    val values = IndexedSeq(distinctInstance, memberOf)
+    val values = js.Object.freeze(js.Array(distinctInstance, memberOf))
   }
 
   /**
@@ -2576,7 +2576,7 @@ package ecs {
     val spread  = "spread"
     val binpack = "binpack"
 
-    val values = IndexedSeq(random, spread, binpack)
+    val values = js.Object.freeze(js.Array(random, spread, binpack))
   }
 
   /**
@@ -2605,7 +2605,7 @@ package ecs {
   object PlatformDeviceTypeEnum {
     val GPU = "GPU"
 
-    val values = IndexedSeq(GPU)
+    val values = js.Object.freeze(js.Array(GPU))
   }
 
   /**
@@ -2638,7 +2638,7 @@ package ecs {
     val TASK_DEFINITION = "TASK_DEFINITION"
     val SERVICE         = "SERVICE"
 
-    val values = IndexedSeq(TASK_DEFINITION, SERVICE)
+    val values = js.Object.freeze(js.Array(TASK_DEFINITION, SERVICE))
   }
 
   /**
@@ -2672,7 +2672,7 @@ package ecs {
   object ProxyConfigurationTypeEnum {
     val APPMESH = "APPMESH"
 
-    val values = IndexedSeq(APPMESH)
+    val values = js.Object.freeze(js.Array(APPMESH))
   }
 
   @js.native
@@ -2992,7 +2992,7 @@ package ecs {
   object ResourceTypeEnum {
     val GPU = "GPU"
 
-    val values = IndexedSeq(GPU)
+    val values = js.Object.freeze(js.Array(GPU))
   }
 
   @js.native
@@ -3093,21 +3093,21 @@ package ecs {
   object ScaleUnitEnum {
     val PERCENT = "PERCENT"
 
-    val values = IndexedSeq(PERCENT)
+    val values = js.Object.freeze(js.Array(PERCENT))
   }
 
   object SchedulingStrategyEnum {
     val REPLICA = "REPLICA"
     val DAEMON  = "DAEMON"
 
-    val values = IndexedSeq(REPLICA, DAEMON)
+    val values = js.Object.freeze(js.Array(REPLICA, DAEMON))
   }
 
   object ScopeEnum {
     val task   = "task"
     val shared = "shared"
 
-    val values = IndexedSeq(task, shared)
+    val values = js.Object.freeze(js.Array(task, shared))
   }
 
   /**
@@ -3264,7 +3264,7 @@ package ecs {
   object ServiceFieldEnum {
     val TAGS = "TAGS"
 
-    val values = IndexedSeq(TAGS)
+    val values = js.Object.freeze(js.Array(TAGS))
   }
 
   /**
@@ -3325,12 +3325,14 @@ package ecs {
     val awsvpcTrunking                 = "awsvpcTrunking"
     val containerInsights              = "containerInsights"
 
-    val values = IndexedSeq(
-      serviceLongArnFormat,
-      taskLongArnFormat,
-      containerInstanceLongArnFormat,
-      awsvpcTrunking,
-      containerInsights
+    val values = js.Object.freeze(
+      js.Array(
+        serviceLongArnFormat,
+        taskLongArnFormat,
+        containerInstanceLongArnFormat,
+        awsvpcTrunking,
+        containerInsights
+      )
     )
   }
 
@@ -3338,14 +3340,14 @@ package ecs {
     val ASC  = "ASC"
     val DESC = "DESC"
 
-    val values = IndexedSeq(ASC, DESC)
+    val values = js.Object.freeze(js.Array(ASC, DESC))
   }
 
   object StabilityStatusEnum {
     val STEADY_STATE = "STEADY_STATE"
     val STABILIZING  = "STABILIZING"
 
-    val values = IndexedSeq(STEADY_STATE, STABILIZING)
+    val values = js.Object.freeze(js.Array(STEADY_STATE, STABILIZING))
   }
 
   @js.native
@@ -3673,7 +3675,7 @@ package ecs {
   object TargetTypeEnum {
     val `container-instance` = "container-instance"
 
-    val values = IndexedSeq(`container-instance`)
+    val values = js.Object.freeze(js.Array(`container-instance`))
   }
 
   /**
@@ -3852,13 +3854,13 @@ package ecs {
     val INACTIVE = "INACTIVE"
     val ALL      = "ALL"
 
-    val values = IndexedSeq(ACTIVE, INACTIVE, ALL)
+    val values = js.Object.freeze(js.Array(ACTIVE, INACTIVE, ALL))
   }
 
   object TaskDefinitionFieldEnum {
     val TAGS = "TAGS"
 
-    val values = IndexedSeq(TAGS)
+    val values = js.Object.freeze(js.Array(TAGS))
   }
 
   /**
@@ -3887,20 +3889,20 @@ package ecs {
   object TaskDefinitionPlacementConstraintTypeEnum {
     val memberOf = "memberOf"
 
-    val values = IndexedSeq(memberOf)
+    val values = js.Object.freeze(js.Array(memberOf))
   }
 
   object TaskDefinitionStatusEnum {
     val ACTIVE   = "ACTIVE"
     val INACTIVE = "INACTIVE"
 
-    val values = IndexedSeq(ACTIVE, INACTIVE)
+    val values = js.Object.freeze(js.Array(ACTIVE, INACTIVE))
   }
 
   object TaskFieldEnum {
     val TAGS = "TAGS"
 
-    val values = IndexedSeq(TAGS)
+    val values = js.Object.freeze(js.Array(TAGS))
   }
 
   /**
@@ -4010,7 +4012,7 @@ package ecs {
     val EssentialContainerExited = "EssentialContainerExited"
     val UserInitiated            = "UserInitiated"
 
-    val values = IndexedSeq(TaskFailedToStart, EssentialContainerExited, UserInitiated)
+    val values = js.Object.freeze(js.Array(TaskFailedToStart, EssentialContainerExited, UserInitiated))
   }
 
   /**
@@ -4043,7 +4045,7 @@ package ecs {
     val tcp = "tcp"
     val udp = "udp"
 
-    val values = IndexedSeq(tcp, udp)
+    val values = js.Object.freeze(js.Array(tcp, udp))
   }
 
   /**
@@ -4089,22 +4091,24 @@ package ecs {
     val sigpending = "sigpending"
     val stack      = "stack"
 
-    val values = IndexedSeq(
-      core,
-      cpu,
-      data,
-      fsize,
-      locks,
-      memlock,
-      msgqueue,
-      nice,
-      nofile,
-      nproc,
-      rss,
-      rtprio,
-      rttime,
-      sigpending,
-      stack
+    val values = js.Object.freeze(
+      js.Array(
+        core,
+        cpu,
+        data,
+        fsize,
+        locks,
+        memlock,
+        msgqueue,
+        nice,
+        nofile,
+        nproc,
+        rss,
+        rtprio,
+        rttime,
+        sigpending,
+        stack
+      )
     )
   }
 
diff --git a/services/efs/src/main/scala/facade/amazonaws/services/EFS.scala b/services/efs/src/main/scala/facade/amazonaws/services/EFS.scala
index 8eb374910..c76258741 100644
--- a/services/efs/src/main/scala/facade/amazonaws/services/EFS.scala
+++ b/services/efs/src/main/scala/facade/amazonaws/services/EFS.scala
@@ -555,7 +555,7 @@ package efs {
     val deleting  = "deleting"
     val deleted   = "deleted"
 
-    val values = IndexedSeq(creating, available, updating, deleting, deleted)
+    val values = js.Object.freeze(js.Array(creating, available, updating, deleting, deleted))
   }
 
   @js.native
@@ -656,7 +656,7 @@ package efs {
     val generalPurpose = "generalPurpose"
     val maxIO          = "maxIO"
 
-    val values = IndexedSeq(generalPurpose, maxIO)
+    val values = js.Object.freeze(js.Array(generalPurpose, maxIO))
   }
 
   @js.native
@@ -706,7 +706,7 @@ package efs {
     val bursting    = "bursting"
     val provisioned = "provisioned"
 
-    val values = IndexedSeq(bursting, provisioned)
+    val values = js.Object.freeze(js.Array(bursting, provisioned))
   }
 
   object TransitionToIARulesEnum {
@@ -715,7 +715,7 @@ package efs {
     val AFTER_60_DAYS = "AFTER_60_DAYS"
     val AFTER_90_DAYS = "AFTER_90_DAYS"
 
-    val values = IndexedSeq(AFTER_14_DAYS, AFTER_30_DAYS, AFTER_60_DAYS, AFTER_90_DAYS)
+    val values = js.Object.freeze(js.Array(AFTER_14_DAYS, AFTER_30_DAYS, AFTER_60_DAYS, AFTER_90_DAYS))
   }
 
   @js.native
diff --git a/services/eks/src/main/scala/facade/amazonaws/services/EKS.scala b/services/eks/src/main/scala/facade/amazonaws/services/EKS.scala
index 77cacb2d0..482e97d5a 100644
--- a/services/eks/src/main/scala/facade/amazonaws/services/EKS.scala
+++ b/services/eks/src/main/scala/facade/amazonaws/services/EKS.scala
@@ -137,7 +137,7 @@ package eks {
     val DELETING = "DELETING"
     val FAILED   = "FAILED"
 
-    val values = IndexedSeq(CREATING, ACTIVE, DELETING, FAILED)
+    val values = js.Object.freeze(js.Array(CREATING, ACTIVE, DELETING, FAILED))
   }
 
   @js.native
@@ -296,15 +296,17 @@ package eks {
     val VpcIdNotFound         = "VpcIdNotFound"
     val Unknown               = "Unknown"
 
-    val values = IndexedSeq(
-      SubnetNotFound,
-      SecurityGroupNotFound,
-      EniLimitReached,
-      IpNotAvailable,
-      AccessDenied,
-      OperationNotPermitted,
-      VpcIdNotFound,
-      Unknown
+    val values = js.Object.freeze(
+      js.Array(
+        SubnetNotFound,
+        SecurityGroupNotFound,
+        EniLimitReached,
+        IpNotAvailable,
+        AccessDenied,
+        OperationNotPermitted,
+        VpcIdNotFound,
+        Unknown
+      )
     )
   }
 
@@ -437,7 +439,7 @@ package eks {
     val controllerManager = "controllerManager"
     val scheduler         = "scheduler"
 
-    val values = IndexedSeq(api, audit, authenticator, controllerManager, scheduler)
+    val values = js.Object.freeze(js.Array(api, audit, authenticator, controllerManager, scheduler))
   }
 
   /**
@@ -598,7 +600,8 @@ package eks {
     val EndpointPublicAccess  = "EndpointPublicAccess"
     val ClusterLogging        = "ClusterLogging"
 
-    val values = IndexedSeq(Version, PlatformVersion, EndpointPrivateAccess, EndpointPublicAccess, ClusterLogging)
+    val values =
+      js.Object.freeze(js.Array(Version, PlatformVersion, EndpointPrivateAccess, EndpointPublicAccess, ClusterLogging))
   }
 
   object UpdateStatusEnum {
@@ -607,7 +610,7 @@ package eks {
     val Cancelled  = "Cancelled"
     val Successful = "Successful"
 
-    val values = IndexedSeq(InProgress, Failed, Cancelled, Successful)
+    val values = js.Object.freeze(js.Array(InProgress, Failed, Cancelled, Successful))
   }
 
   object UpdateTypeEnum {
@@ -615,7 +618,7 @@ package eks {
     val EndpointAccessUpdate = "EndpointAccessUpdate"
     val LoggingUpdate        = "LoggingUpdate"
 
-    val values = IndexedSeq(VersionUpdate, EndpointAccessUpdate, LoggingUpdate)
+    val values = js.Object.freeze(js.Array(VersionUpdate, EndpointAccessUpdate, LoggingUpdate))
   }
 
   /**
diff --git a/services/elasticache/src/main/scala/facade/amazonaws/services/ElastiCache.scala b/services/elasticache/src/main/scala/facade/amazonaws/services/ElastiCache.scala
index 8140a6b07..8fc31a71f 100644
--- a/services/elasticache/src/main/scala/facade/amazonaws/services/ElastiCache.scala
+++ b/services/elasticache/src/main/scala/facade/amazonaws/services/ElastiCache.scala
@@ -271,7 +271,7 @@ package elasticache {
     val `single-az` = "single-az"
     val `cross-az`  = "cross-az"
 
-    val values = IndexedSeq(`single-az`, `cross-az`)
+    val values = js.Object.freeze(js.Array(`single-az`, `cross-az`))
   }
 
   /**
@@ -365,7 +365,7 @@ package elasticache {
     val enabling  = "enabling"
     val disabling = "disabling"
 
-    val values = IndexedSeq(enabled, disabled, enabling, disabling)
+    val values = js.Object.freeze(js.Array(enabled, disabled, enabling, disabling))
   }
 
   /**
@@ -955,7 +955,7 @@ package elasticache {
     val immediate         = "immediate"
     val `requires-reboot` = "requires-reboot"
 
-    val values = IndexedSeq(immediate, `requires-reboot`)
+    val values = js.Object.freeze(js.Array(immediate, `requires-reboot`))
   }
 
   /**
@@ -2769,7 +2769,7 @@ package elasticache {
     val system   = "system"
     val customer = "customer"
 
-    val values = IndexedSeq(system, customer)
+    val values = js.Object.freeze(js.Array(system, customer))
   }
 
   object NodeUpdateStatusEnum {
@@ -2780,7 +2780,8 @@ package elasticache {
     val stopped            = "stopped"
     val complete           = "complete"
 
-    val values = IndexedSeq(`not-applied`, `waiting-to-start`, `in-progress`, stopping, stopped, complete)
+    val values =
+      js.Object.freeze(js.Array(`not-applied`, `waiting-to-start`, `in-progress`, stopping, stopped, complete))
   }
 
   /**
@@ -2871,7 +2872,7 @@ package elasticache {
     val enabled  = "enabled"
     val disabled = "disabled"
 
-    val values = IndexedSeq(enabled, disabled)
+    val values = js.Object.freeze(js.Array(enabled, disabled))
   }
 
   /**
@@ -3483,7 +3484,7 @@ package elasticache {
     val medium    = "medium"
     val low       = "low"
 
-    val values = IndexedSeq(critical, important, medium, low)
+    val values = js.Object.freeze(js.Array(critical, important, medium, low))
   }
 
   object ServiceUpdateStatusEnum {
@@ -3491,13 +3492,13 @@ package elasticache {
     val cancelled = "cancelled"
     val expired   = "expired"
 
-    val values = IndexedSeq(available, cancelled, expired)
+    val values = js.Object.freeze(js.Array(available, cancelled, expired))
   }
 
   object ServiceUpdateTypeEnum {
     val `security-update` = "security-update"
 
-    val values = IndexedSeq(`security-update`)
+    val values = js.Object.freeze(js.Array(`security-update`))
   }
 
   @js.native
@@ -3523,7 +3524,7 @@ package elasticache {
     val no    = "no"
     val `n/a` = "n/a"
 
-    val values = IndexedSeq(yes, no, `n/a`)
+    val values = js.Object.freeze(js.Array(yes, no, `n/a`))
   }
 
   /**
@@ -3638,12 +3639,14 @@ package elasticache {
     val `cache-subnet-group`    = "cache-subnet-group"
     val `replication-group`     = "replication-group"
 
-    val values = IndexedSeq(
-      `cache-cluster`,
-      `cache-parameter-group`,
-      `cache-security-group`,
-      `cache-subnet-group`,
-      `replication-group`
+    val values = js.Object.freeze(
+      js.Array(
+        `cache-cluster`,
+        `cache-parameter-group`,
+        `cache-security-group`,
+        `cache-subnet-group`,
+        `replication-group`
+      )
     )
   }
 
@@ -3877,7 +3880,8 @@ package elasticache {
     val stopped            = "stopped"
     val complete           = "complete"
 
-    val values = IndexedSeq(`not-applied`, `waiting-to-start`, `in-progress`, stopping, stopped, complete)
+    val values =
+      js.Object.freeze(js.Array(`not-applied`, `waiting-to-start`, `in-progress`, stopping, stopped, complete))
   }
 
   @js.native
diff --git a/services/elasticbeanstalk/src/main/scala/facade/amazonaws/services/ElasticBeanstalk.scala b/services/elasticbeanstalk/src/main/scala/facade/amazonaws/services/ElasticBeanstalk.scala
index fa6087c77..b41fbad6e 100644
--- a/services/elasticbeanstalk/src/main/scala/facade/amazonaws/services/ElasticBeanstalk.scala
+++ b/services/elasticbeanstalk/src/main/scala/facade/amazonaws/services/ElasticBeanstalk.scala
@@ -385,7 +385,7 @@ package elasticbeanstalk {
     val Failed    = "Failed"
     val Unknown   = "Unknown"
 
-    val values = IndexedSeq(Completed, Failed, Unknown)
+    val values = js.Object.freeze(js.Array(Completed, Failed, Unknown))
   }
 
   object ActionStatusEnum {
@@ -394,7 +394,7 @@ package elasticbeanstalk {
     val Running   = "Running"
     val Unknown   = "Unknown"
 
-    val values = IndexedSeq(Scheduled, Pending, Running, Unknown)
+    val values = js.Object.freeze(js.Array(Scheduled, Pending, Running, Unknown))
   }
 
   object ActionTypeEnum {
@@ -402,7 +402,7 @@ package elasticbeanstalk {
     val PlatformUpdate  = "PlatformUpdate"
     val Unknown         = "Unknown"
 
-    val values = IndexedSeq(InstanceRefresh, PlatformUpdate, Unknown)
+    val values = js.Object.freeze(js.Array(InstanceRefresh, PlatformUpdate, Unknown))
   }
 
   /**
@@ -659,7 +659,7 @@ package elasticbeanstalk {
     val Processing  = "Processing"
     val Building    = "Building"
 
-    val values = IndexedSeq(Processed, Unprocessed, Failed, Processing, Building)
+    val values = js.Object.freeze(js.Array(Processed, Unprocessed, Failed, Processing, Building))
   }
 
   /**
@@ -892,7 +892,7 @@ package elasticbeanstalk {
     val BUILD_GENERAL1_MEDIUM = "BUILD_GENERAL1_MEDIUM"
     val BUILD_GENERAL1_LARGE  = "BUILD_GENERAL1_LARGE"
 
-    val values = IndexedSeq(BUILD_GENERAL1_SMALL, BUILD_GENERAL1_MEDIUM, BUILD_GENERAL1_LARGE)
+    val values = js.Object.freeze(js.Array(BUILD_GENERAL1_SMALL, BUILD_GENERAL1_MEDIUM, BUILD_GENERAL1_LARGE))
   }
 
   object ConfigurationDeploymentStatusEnum {
@@ -900,7 +900,7 @@ package elasticbeanstalk {
     val pending  = "pending"
     val failed   = "failed"
 
-    val values = IndexedSeq(deployed, pending, failed)
+    val values = js.Object.freeze(js.Array(deployed, pending, failed))
   }
 
   /**
@@ -982,7 +982,7 @@ package elasticbeanstalk {
     val Scalar = "Scalar"
     val List   = "List"
 
-    val values = IndexedSeq(Scalar, List)
+    val values = js.Object.freeze(js.Array(Scalar, List))
   }
 
   /**
@@ -2075,7 +2075,7 @@ package elasticbeanstalk {
     val Red    = "Red"
     val Grey   = "Grey"
 
-    val values = IndexedSeq(Green, Yellow, Red, Grey)
+    val values = js.Object.freeze(js.Array(Green, Yellow, Red, Grey))
   }
 
   object EnvironmentHealthAttributeEnum {
@@ -2088,7 +2088,9 @@ package elasticbeanstalk {
     val HealthStatus       = "HealthStatus"
     val RefreshedAt        = "RefreshedAt"
 
-    val values = IndexedSeq(Status, Color, Causes, ApplicationMetrics, InstancesHealth, All, HealthStatus, RefreshedAt)
+    val values = js.Object.freeze(
+      js.Array(Status, Color, Causes, ApplicationMetrics, InstancesHealth, All, HealthStatus, RefreshedAt)
+    )
   }
 
   object EnvironmentHealthStatusEnum {
@@ -2102,7 +2104,7 @@ package elasticbeanstalk {
     val Severe    = "Severe"
     val Suspended = "Suspended"
 
-    val values = IndexedSeq(NoData, Unknown, Pending, Ok, Info, Warning, Degraded, Severe, Suspended)
+    val values = js.Object.freeze(js.Array(NoData, Unknown, Pending, Ok, Info, Warning, Degraded, Severe, Suspended))
   }
 
   /**
@@ -2136,7 +2138,7 @@ package elasticbeanstalk {
     val tail   = "tail"
     val bundle = "bundle"
 
-    val values = IndexedSeq(tail, bundle)
+    val values = js.Object.freeze(js.Array(tail, bundle))
   }
 
   /**
@@ -2242,7 +2244,7 @@ package elasticbeanstalk {
     val Terminating = "Terminating"
     val Terminated  = "Terminated"
 
-    val values = IndexedSeq(Launching, Updating, Ready, Terminating, Terminated)
+    val values = js.Object.freeze(js.Array(Launching, Updating, Ready, Terminating, Terminated))
   }
 
   /**
@@ -2340,7 +2342,7 @@ package elasticbeanstalk {
     val ERROR = "ERROR"
     val FATAL = "FATAL"
 
-    val values = IndexedSeq(TRACE, DEBUG, INFO, WARN, ERROR, FATAL)
+    val values = js.Object.freeze(js.Array(TRACE, DEBUG, INFO, WARN, ERROR, FATAL))
   }
 
   object FailureTypeEnum {
@@ -2352,14 +2354,16 @@ package elasticbeanstalk {
     val InvalidEnvironmentState = "InvalidEnvironmentState"
     val PermissionsError        = "PermissionsError"
 
-    val values = IndexedSeq(
-      UpdateCancelled,
-      CancellationFailed,
-      RollbackFailed,
-      RollbackSuccessful,
-      InternalFailure,
-      InvalidEnvironmentState,
-      PermissionsError
+    val values = js.Object.freeze(
+      js.Array(
+        UpdateCancelled,
+        CancellationFailed,
+        RollbackFailed,
+        RollbackSuccessful,
+        InternalFailure,
+        InvalidEnvironmentState,
+        PermissionsError
+      )
     )
   }
 
@@ -2433,18 +2437,20 @@ package elasticbeanstalk {
     val InstanceType       = "InstanceType"
     val All                = "All"
 
-    val values = IndexedSeq(
-      HealthStatus,
-      Color,
-      Causes,
-      ApplicationMetrics,
-      RefreshedAt,
-      LaunchedAt,
-      System,
-      Deployment,
-      AvailabilityZone,
-      InstanceType,
-      All
+    val values = js.Object.freeze(
+      js.Array(
+        HealthStatus,
+        Color,
+        Causes,
+        ApplicationMetrics,
+        RefreshedAt,
+        LaunchedAt,
+        System,
+        Deployment,
+        AvailabilityZone,
+        InstanceType,
+        All
+      )
     )
   }
 
@@ -2973,7 +2979,7 @@ package elasticbeanstalk {
     val Deleting = "Deleting"
     val Deleted  = "Deleted"
 
-    val values = IndexedSeq(Creating, Failed, Ready, Deleting, Deleted)
+    val values = js.Object.freeze(js.Array(Creating, Failed, Ready, Deleting, Deleted))
   }
 
   /**
@@ -3352,14 +3358,14 @@ package elasticbeanstalk {
     val CodeCommit = "CodeCommit"
     val S3         = "S3"
 
-    val values = IndexedSeq(CodeCommit, S3)
+    val values = js.Object.freeze(js.Array(CodeCommit, S3))
   }
 
   object SourceTypeEnum {
     val Git = "Git"
     val Zip = "Zip"
 
-    val values = IndexedSeq(Git, Zip)
+    val values = js.Object.freeze(js.Array(Git, Zip))
   }
 
   /**
@@ -3738,6 +3744,6 @@ package elasticbeanstalk {
     val error   = "error"
     val warning = "warning"
 
-    val values = IndexedSeq(error, warning)
+    val values = js.Object.freeze(js.Array(error, warning))
   }
 }
diff --git a/services/elbv2/src/main/scala/facade/amazonaws/services/ELBv2.scala b/services/elbv2/src/main/scala/facade/amazonaws/services/ELBv2.scala
index fe43e558c..4d8900a04 100644
--- a/services/elbv2/src/main/scala/facade/amazonaws/services/ELBv2.scala
+++ b/services/elbv2/src/main/scala/facade/amazonaws/services/ELBv2.scala
@@ -313,7 +313,8 @@ package elbv2 {
     val redirect               = "redirect"
     val `fixed-response`       = "fixed-response"
 
-    val values = IndexedSeq(forward, `authenticate-oidc`, `authenticate-cognito`, redirect, `fixed-response`)
+    val values =
+      js.Object.freeze(js.Array(forward, `authenticate-oidc`, `authenticate-cognito`, redirect, `fixed-response`))
   }
 
   @js.native
@@ -388,7 +389,7 @@ package elbv2 {
     val allow        = "allow"
     val authenticate = "authenticate"
 
-    val values = IndexedSeq(deny, allow, authenticate)
+    val values = js.Object.freeze(js.Array(deny, allow, authenticate))
   }
 
   /**
@@ -440,7 +441,7 @@ package elbv2 {
     val allow        = "allow"
     val authenticate = "authenticate"
 
-    val values = IndexedSeq(deny, allow, authenticate)
+    val values = js.Object.freeze(js.Array(deny, allow, authenticate))
   }
 
   /**
@@ -1432,7 +1433,7 @@ package elbv2 {
     val ipv4      = "ipv4"
     val dualstack = "dualstack"
 
-    val values = IndexedSeq(ipv4, dualstack)
+    val values = js.Object.freeze(js.Array(ipv4, dualstack))
   }
 
   /**
@@ -1589,7 +1590,7 @@ package elbv2 {
     val `internet-facing` = "internet-facing"
     val internal          = "internal"
 
-    val values = IndexedSeq(`internet-facing`, internal)
+    val values = js.Object.freeze(js.Array(`internet-facing`, internal))
   }
 
   /**
@@ -1619,14 +1620,14 @@ package elbv2 {
     val active_impaired = "active_impaired"
     val failed          = "failed"
 
-    val values = IndexedSeq(active, provisioning, active_impaired, failed)
+    val values = js.Object.freeze(js.Array(active, provisioning, active_impaired, failed))
   }
 
   object LoadBalancerTypeEnumEnum {
     val application = "application"
     val network     = "network"
 
-    val values = IndexedSeq(application, network)
+    val values = js.Object.freeze(js.Array(application, network))
   }
 
   /**
@@ -1889,7 +1890,7 @@ package elbv2 {
     val UDP     = "UDP"
     val TCP_UDP = "TCP_UDP"
 
-    val values = IndexedSeq(HTTP, HTTPS, TCP, TLS, UDP, TCP_UDP)
+    val values = js.Object.freeze(js.Array(HTTP, HTTPS, TCP, TLS, UDP, TCP_UDP))
   }
 
   /**
@@ -1979,7 +1980,7 @@ package elbv2 {
     val HTTP_301 = "HTTP_301"
     val HTTP_302 = "HTTP_302"
 
-    val values = IndexedSeq(HTTP_301, HTTP_302)
+    val values = js.Object.freeze(js.Array(HTTP_301, HTTP_302))
   }
 
   @js.native
@@ -2588,19 +2589,21 @@ package elbv2 {
     val `Target.HealthCheckDisabled`      = "Target.HealthCheckDisabled"
     val `Elb.InternalError`               = "Elb.InternalError"
 
-    val values = IndexedSeq(
-      `Elb.RegistrationInProgress`,
-      `Elb.InitialHealthChecking`,
-      `Target.ResponseCodeMismatch`,
-      `Target.Timeout`,
-      `Target.FailedHealthChecks`,
-      `Target.NotRegistered`,
-      `Target.NotInUse`,
-      `Target.DeregistrationInProgress`,
-      `Target.InvalidState`,
-      `Target.IpUnusable`,
-      `Target.HealthCheckDisabled`,
-      `Elb.InternalError`
+    val values = js.Object.freeze(
+      js.Array(
+        `Elb.RegistrationInProgress`,
+        `Elb.InitialHealthChecking`,
+        `Target.ResponseCodeMismatch`,
+        `Target.Timeout`,
+        `Target.FailedHealthChecks`,
+        `Target.NotRegistered`,
+        `Target.NotInUse`,
+        `Target.DeregistrationInProgress`,
+        `Target.InvalidState`,
+        `Target.IpUnusable`,
+        `Target.HealthCheckDisabled`,
+        `Elb.InternalError`
+      )
     )
   }
 
@@ -2612,7 +2615,7 @@ package elbv2 {
     val draining    = "draining"
     val unavailable = "unavailable"
 
-    val values = IndexedSeq(initial, healthy, unhealthy, unused, draining, unavailable)
+    val values = js.Object.freeze(js.Array(initial, healthy, unhealthy, unused, draining, unavailable))
   }
 
   object TargetTypeEnumEnum {
@@ -2620,6 +2623,6 @@ package elbv2 {
     val ip       = "ip"
     val lambda   = "lambda"
 
-    val values = IndexedSeq(instance, ip, lambda)
+    val values = js.Object.freeze(js.Array(instance, ip, lambda))
   }
 }
diff --git a/services/emr/src/main/scala/facade/amazonaws/services/EMR.scala b/services/emr/src/main/scala/facade/amazonaws/services/EMR.scala
index b46b5b203..3fce94de3 100644
--- a/services/emr/src/main/scala/facade/amazonaws/services/EMR.scala
+++ b/services/emr/src/main/scala/facade/amazonaws/services/EMR.scala
@@ -222,7 +222,7 @@ package emr {
     val CANCEL_AND_WAIT    = "CANCEL_AND_WAIT"
     val CONTINUE           = "CONTINUE"
 
-    val values = IndexedSeq(TERMINATE_JOB_FLOW, TERMINATE_CLUSTER, CANCEL_AND_WAIT, CONTINUE)
+    val values = js.Object.freeze(js.Array(TERMINATE_JOB_FLOW, TERMINATE_CLUSTER, CANCEL_AND_WAIT, CONTINUE))
   }
 
   @js.native
@@ -391,7 +391,7 @@ package emr {
     val PERCENT_CHANGE_IN_CAPACITY = "PERCENT_CHANGE_IN_CAPACITY"
     val EXACT_CAPACITY             = "EXACT_CAPACITY"
 
-    val values = IndexedSeq(CHANGE_IN_CAPACITY, PERCENT_CHANGE_IN_CAPACITY, EXACT_CAPACITY)
+    val values = js.Object.freeze(js.Array(CHANGE_IN_CAPACITY, PERCENT_CHANGE_IN_CAPACITY, EXACT_CAPACITY))
   }
 
   /**
@@ -477,7 +477,7 @@ package emr {
     val DETACHED  = "DETACHED"
     val FAILED    = "FAILED"
 
-    val values = IndexedSeq(PENDING, ATTACHING, ATTACHED, DETACHING, DETACHED, FAILED)
+    val values = js.Object.freeze(js.Array(PENDING, ATTACHING, ATTACHED, DETACHING, DETACHED, FAILED))
   }
 
   /**
@@ -506,7 +506,7 @@ package emr {
     val PROVISION_FAILURE = "PROVISION_FAILURE"
     val CLEANUP_FAILURE   = "CLEANUP_FAILURE"
 
-    val values = IndexedSeq(USER_REQUEST, PROVISION_FAILURE, CLEANUP_FAILURE)
+    val values = js.Object.freeze(js.Array(USER_REQUEST, PROVISION_FAILURE, CLEANUP_FAILURE))
   }
 
   /**
@@ -686,7 +686,7 @@ package emr {
     val SUBMITTED = "SUBMITTED"
     val FAILED    = "FAILED"
 
-    val values = IndexedSeq(SUBMITTED, FAILED)
+    val values = js.Object.freeze(js.Array(SUBMITTED, FAILED))
   }
 
   /**
@@ -832,7 +832,9 @@ package emr {
     val TERMINATED             = "TERMINATED"
     val TERMINATED_WITH_ERRORS = "TERMINATED_WITH_ERRORS"
 
-    val values = IndexedSeq(STARTING, BOOTSTRAPPING, RUNNING, WAITING, TERMINATING, TERMINATED, TERMINATED_WITH_ERRORS)
+    val values = js.Object.freeze(
+      js.Array(STARTING, BOOTSTRAPPING, RUNNING, WAITING, TERMINATING, TERMINATED, TERMINATED_WITH_ERRORS)
+    )
   }
 
   /**
@@ -866,15 +868,17 @@ package emr {
     val STEP_FAILURE           = "STEP_FAILURE"
     val ALL_STEPS_COMPLETED    = "ALL_STEPS_COMPLETED"
 
-    val values = IndexedSeq(
-      INTERNAL_ERROR,
-      VALIDATION_ERROR,
-      INSTANCE_FAILURE,
-      INSTANCE_FLEET_TIMEOUT,
-      BOOTSTRAP_FAILURE,
-      USER_REQUEST,
-      STEP_FAILURE,
-      ALL_STEPS_COMPLETED
+    val values = js.Object.freeze(
+      js.Array(
+        INTERNAL_ERROR,
+        VALIDATION_ERROR,
+        INSTANCE_FAILURE,
+        INSTANCE_FLEET_TIMEOUT,
+        BOOTSTRAP_FAILURE,
+        USER_REQUEST,
+        STEP_FAILURE,
+        ALL_STEPS_COMPLETED
+      )
     )
   }
 
@@ -983,7 +987,7 @@ package emr {
     val LESS_THAN             = "LESS_THAN"
     val LESS_THAN_OR_EQUAL    = "LESS_THAN_OR_EQUAL"
 
-    val values = IndexedSeq(GREATER_THAN_OR_EQUAL, GREATER_THAN, LESS_THAN, LESS_THAN_OR_EQUAL)
+    val values = js.Object.freeze(js.Array(GREATER_THAN_OR_EQUAL, GREATER_THAN, LESS_THAN, LESS_THAN_OR_EQUAL))
   }
 
   /**
@@ -1553,7 +1557,7 @@ package emr {
     val INSTANCE_FLEET = "INSTANCE_FLEET"
     val INSTANCE_GROUP = "INSTANCE_GROUP"
 
-    val values = IndexedSeq(INSTANCE_FLEET, INSTANCE_GROUP)
+    val values = js.Object.freeze(js.Array(INSTANCE_FLEET, INSTANCE_GROUP))
   }
 
   /**
@@ -1699,7 +1703,8 @@ package emr {
     val TERMINATING   = "TERMINATING"
     val TERMINATED    = "TERMINATED"
 
-    val values = IndexedSeq(PROVISIONING, BOOTSTRAPPING, RUNNING, RESIZING, SUSPENDED, TERMINATING, TERMINATED)
+    val values =
+      js.Object.freeze(js.Array(PROVISIONING, BOOTSTRAPPING, RUNNING, RESIZING, SUSPENDED, TERMINATING, TERMINATED))
   }
 
   /**
@@ -1731,7 +1736,7 @@ package emr {
     val INSTANCE_FAILURE   = "INSTANCE_FAILURE"
     val CLUSTER_TERMINATED = "CLUSTER_TERMINATED"
 
-    val values = IndexedSeq(INTERNAL_ERROR, VALIDATION_ERROR, INSTANCE_FAILURE, CLUSTER_TERMINATED)
+    val values = js.Object.freeze(js.Array(INTERNAL_ERROR, VALIDATION_ERROR, INSTANCE_FAILURE, CLUSTER_TERMINATED))
   }
 
   /**
@@ -1791,7 +1796,7 @@ package emr {
     val CORE   = "CORE"
     val TASK   = "TASK"
 
-    val values = IndexedSeq(MASTER, CORE, TASK)
+    val values = js.Object.freeze(js.Array(MASTER, CORE, TASK))
   }
 
   /**
@@ -2012,18 +2017,20 @@ package emr {
     val SHUTTING_DOWN = "SHUTTING_DOWN"
     val ENDED         = "ENDED"
 
-    val values = IndexedSeq(
-      PROVISIONING,
-      BOOTSTRAPPING,
-      RUNNING,
-      RECONFIGURING,
-      RESIZING,
-      SUSPENDED,
-      TERMINATING,
-      TERMINATED,
-      ARRESTED,
-      SHUTTING_DOWN,
-      ENDED
+    val values = js.Object.freeze(
+      js.Array(
+        PROVISIONING,
+        BOOTSTRAPPING,
+        RUNNING,
+        RECONFIGURING,
+        RESIZING,
+        SUSPENDED,
+        TERMINATING,
+        TERMINATED,
+        ARRESTED,
+        SHUTTING_DOWN,
+        ENDED
+      )
     )
   }
 
@@ -2054,7 +2061,7 @@ package emr {
     val INSTANCE_FAILURE   = "INSTANCE_FAILURE"
     val CLUSTER_TERMINATED = "CLUSTER_TERMINATED"
 
-    val values = IndexedSeq(INTERNAL_ERROR, VALIDATION_ERROR, INSTANCE_FAILURE, CLUSTER_TERMINATED)
+    val values = js.Object.freeze(js.Array(INTERNAL_ERROR, VALIDATION_ERROR, INSTANCE_FAILURE, CLUSTER_TERMINATED))
   }
 
   /**
@@ -2110,7 +2117,7 @@ package emr {
     val CORE   = "CORE"
     val TASK   = "TASK"
 
-    val values = IndexedSeq(MASTER, CORE, TASK)
+    val values = js.Object.freeze(js.Array(MASTER, CORE, TASK))
   }
 
   /**
@@ -2142,7 +2149,7 @@ package emr {
     val CORE   = "CORE"
     val TASK   = "TASK"
 
-    val values = IndexedSeq(MASTER, CORE, TASK)
+    val values = js.Object.freeze(js.Array(MASTER, CORE, TASK))
   }
 
   object InstanceStateEnum {
@@ -2152,7 +2159,7 @@ package emr {
     val RUNNING              = "RUNNING"
     val TERMINATED           = "TERMINATED"
 
-    val values = IndexedSeq(AWAITING_FULFILLMENT, PROVISIONING, BOOTSTRAPPING, RUNNING, TERMINATED)
+    val values = js.Object.freeze(js.Array(AWAITING_FULFILLMENT, PROVISIONING, BOOTSTRAPPING, RUNNING, TERMINATED))
   }
 
   /**
@@ -2183,7 +2190,9 @@ package emr {
     val BOOTSTRAP_FAILURE  = "BOOTSTRAP_FAILURE"
     val CLUSTER_TERMINATED = "CLUSTER_TERMINATED"
 
-    val values = IndexedSeq(INTERNAL_ERROR, VALIDATION_ERROR, INSTANCE_FAILURE, BOOTSTRAP_FAILURE, CLUSTER_TERMINATED)
+    val values = js.Object.freeze(
+      js.Array(INTERNAL_ERROR, VALIDATION_ERROR, INSTANCE_FAILURE, BOOTSTRAP_FAILURE, CLUSTER_TERMINATED)
+    )
   }
 
   /**
@@ -2385,7 +2394,9 @@ package emr {
     val COMPLETED     = "COMPLETED"
     val FAILED        = "FAILED"
 
-    val values = IndexedSeq(STARTING, BOOTSTRAPPING, RUNNING, WAITING, SHUTTING_DOWN, TERMINATED, COMPLETED, FAILED)
+    val values = js.Object.freeze(
+      js.Array(STARTING, BOOTSTRAPPING, RUNNING, WAITING, SHUTTING_DOWN, TERMINATED, COMPLETED, FAILED)
+    )
   }
 
   /**
@@ -2928,7 +2939,7 @@ package emr {
     val ON_DEMAND = "ON_DEMAND"
     val SPOT      = "SPOT"
 
-    val values = IndexedSeq(ON_DEMAND, SPOT)
+    val values = js.Object.freeze(js.Array(ON_DEMAND, SPOT))
   }
 
   /**
@@ -3184,7 +3195,7 @@ package emr {
     val SECURITY = "SECURITY"
     val NONE     = "NONE"
 
-    val values = IndexedSeq(SECURITY, NONE)
+    val values = js.Object.freeze(js.Array(SECURITY, NONE))
   }
 
   /**
@@ -3295,7 +3306,7 @@ package emr {
     val TERMINATE_AT_INSTANCE_HOUR   = "TERMINATE_AT_INSTANCE_HOUR"
     val TERMINATE_AT_TASK_COMPLETION = "TERMINATE_AT_TASK_COMPLETION"
 
-    val values = IndexedSeq(TERMINATE_AT_INSTANCE_HOUR, TERMINATE_AT_TASK_COMPLETION)
+    val values = js.Object.freeze(js.Array(TERMINATE_AT_INSTANCE_HOUR, TERMINATE_AT_TASK_COMPLETION))
   }
 
   /**
@@ -3563,7 +3574,7 @@ package emr {
     val SWITCH_TO_ON_DEMAND = "SWITCH_TO_ON_DEMAND"
     val TERMINATE_CLUSTER   = "TERMINATE_CLUSTER"
 
-    val values = IndexedSeq(SWITCH_TO_ON_DEMAND, TERMINATE_CLUSTER)
+    val values = js.Object.freeze(js.Array(SWITCH_TO_ON_DEMAND, TERMINATE_CLUSTER))
   }
 
   object StatisticEnum {
@@ -3573,7 +3584,7 @@ package emr {
     val MINIMUM      = "MINIMUM"
     val MAXIMUM      = "MAXIMUM"
 
-    val values = IndexedSeq(SAMPLE_COUNT, AVERAGE, SUM, MINIMUM, MAXIMUM)
+    val values = js.Object.freeze(js.Array(SAMPLE_COUNT, AVERAGE, SUM, MINIMUM, MAXIMUM))
   }
 
   /**
@@ -3664,7 +3675,7 @@ package emr {
     val FAILED      = "FAILED"
     val INTERRUPTED = "INTERRUPTED"
 
-    val values = IndexedSeq(PENDING, RUNNING, CONTINUE, COMPLETED, CANCELLED, FAILED, INTERRUPTED)
+    val values = js.Object.freeze(js.Array(PENDING, RUNNING, CONTINUE, COMPLETED, CANCELLED, FAILED, INTERRUPTED))
   }
 
   /**
@@ -3708,7 +3719,7 @@ package emr {
     val FAILED         = "FAILED"
     val INTERRUPTED    = "INTERRUPTED"
 
-    val values = IndexedSeq(PENDING, CANCEL_PENDING, RUNNING, COMPLETED, CANCELLED, FAILED, INTERRUPTED)
+    val values = js.Object.freeze(js.Array(PENDING, CANCEL_PENDING, RUNNING, COMPLETED, CANCELLED, FAILED, INTERRUPTED))
   }
 
   /**
@@ -3735,7 +3746,7 @@ package emr {
   object StepStateChangeReasonCodeEnum {
     val NONE = "NONE"
 
-    val values = IndexedSeq(NONE)
+    val values = js.Object.freeze(js.Array(NONE))
   }
 
   /**
@@ -3910,34 +3921,36 @@ package emr {
     val TERA_BITS_PER_SECOND  = "TERA_BITS_PER_SECOND"
     val COUNT_PER_SECOND      = "COUNT_PER_SECOND"
 
-    val values = IndexedSeq(
-      NONE,
-      SECONDS,
-      MICRO_SECONDS,
-      MILLI_SECONDS,
-      BYTES,
-      KILO_BYTES,
-      MEGA_BYTES,
-      GIGA_BYTES,
-      TERA_BYTES,
-      BITS,
-      KILO_BITS,
-      MEGA_BITS,
-      GIGA_BITS,
-      TERA_BITS,
-      PERCENT,
-      COUNT,
-      BYTES_PER_SECOND,
-      KILO_BYTES_PER_SECOND,
-      MEGA_BYTES_PER_SECOND,
-      GIGA_BYTES_PER_SECOND,
-      TERA_BYTES_PER_SECOND,
-      BITS_PER_SECOND,
-      KILO_BITS_PER_SECOND,
-      MEGA_BITS_PER_SECOND,
-      GIGA_BITS_PER_SECOND,
-      TERA_BITS_PER_SECOND,
-      COUNT_PER_SECOND
+    val values = js.Object.freeze(
+      js.Array(
+        NONE,
+        SECONDS,
+        MICRO_SECONDS,
+        MILLI_SECONDS,
+        BYTES,
+        KILO_BYTES,
+        MEGA_BYTES,
+        GIGA_BYTES,
+        TERA_BYTES,
+        BITS,
+        KILO_BITS,
+        MEGA_BITS,
+        GIGA_BITS,
+        TERA_BITS,
+        PERCENT,
+        COUNT,
+        BYTES_PER_SECOND,
+        KILO_BYTES_PER_SECOND,
+        MEGA_BYTES_PER_SECOND,
+        GIGA_BYTES_PER_SECOND,
+        TERA_BYTES_PER_SECOND,
+        BITS_PER_SECOND,
+        KILO_BITS_PER_SECOND,
+        MEGA_BITS_PER_SECOND,
+        GIGA_BITS_PER_SECOND,
+        TERA_BITS_PER_SECOND,
+        COUNT_PER_SECOND
+      )
     )
   }
 
diff --git a/services/es/src/main/scala/facade/amazonaws/services/ES.scala b/services/es/src/main/scala/facade/amazonaws/services/ES.scala
index c59028bd5..f700eeb4d 100644
--- a/services/es/src/main/scala/facade/amazonaws/services/ES.scala
+++ b/services/es/src/main/scala/facade/amazonaws/services/ES.scala
@@ -521,7 +521,7 @@ package es {
     val NOT_ELIGIBLE   = "NOT_ELIGIBLE"
     val ELIGIBLE       = "ELIGIBLE"
 
-    val values = IndexedSeq(PENDING_UPDATE, IN_PROGRESS, COMPLETED, NOT_ELIGIBLE, ELIGIBLE)
+    val values = js.Object.freeze(js.Array(PENDING_UPDATE, IN_PROGRESS, COMPLETED, NOT_ELIGIBLE, ELIGIBLE))
   }
 
   /**
@@ -909,63 +909,65 @@ package es {
     val `i3.8xlarge.elasticsearch`  = "i3.8xlarge.elasticsearch"
     val `i3.16xlarge.elasticsearch` = "i3.16xlarge.elasticsearch"
 
-    val values = IndexedSeq(
-      `m3.medium.elasticsearch`,
-      `m3.large.elasticsearch`,
-      `m3.xlarge.elasticsearch`,
-      `m3.2xlarge.elasticsearch`,
-      `m4.large.elasticsearch`,
-      `m4.xlarge.elasticsearch`,
-      `m4.2xlarge.elasticsearch`,
-      `m4.4xlarge.elasticsearch`,
-      `m4.10xlarge.elasticsearch`,
-      `m5.large.elasticsearch`,
-      `m5.xlarge.elasticsearch`,
-      `m5.2xlarge.elasticsearch`,
-      `m5.4xlarge.elasticsearch`,
-      `m5.12xlarge.elasticsearch`,
-      `r5.large.elasticsearch`,
-      `r5.xlarge.elasticsearch`,
-      `r5.2xlarge.elasticsearch`,
-      `r5.4xlarge.elasticsearch`,
-      `r5.12xlarge.elasticsearch`,
-      `c5.large.elasticsearch`,
-      `c5.xlarge.elasticsearch`,
-      `c5.2xlarge.elasticsearch`,
-      `c5.4xlarge.elasticsearch`,
-      `c5.9xlarge.elasticsearch`,
-      `c5.18xlarge.elasticsearch`,
-      `t2.micro.elasticsearch`,
-      `t2.small.elasticsearch`,
-      `t2.medium.elasticsearch`,
-      `r3.large.elasticsearch`,
-      `r3.xlarge.elasticsearch`,
-      `r3.2xlarge.elasticsearch`,
-      `r3.4xlarge.elasticsearch`,
-      `r3.8xlarge.elasticsearch`,
-      `i2.xlarge.elasticsearch`,
-      `i2.2xlarge.elasticsearch`,
-      `d2.xlarge.elasticsearch`,
-      `d2.2xlarge.elasticsearch`,
-      `d2.4xlarge.elasticsearch`,
-      `d2.8xlarge.elasticsearch`,
-      `c4.large.elasticsearch`,
-      `c4.xlarge.elasticsearch`,
-      `c4.2xlarge.elasticsearch`,
-      `c4.4xlarge.elasticsearch`,
-      `c4.8xlarge.elasticsearch`,
-      `r4.large.elasticsearch`,
-      `r4.xlarge.elasticsearch`,
-      `r4.2xlarge.elasticsearch`,
-      `r4.4xlarge.elasticsearch`,
-      `r4.8xlarge.elasticsearch`,
-      `r4.16xlarge.elasticsearch`,
-      `i3.large.elasticsearch`,
-      `i3.xlarge.elasticsearch`,
-      `i3.2xlarge.elasticsearch`,
-      `i3.4xlarge.elasticsearch`,
-      `i3.8xlarge.elasticsearch`,
-      `i3.16xlarge.elasticsearch`
+    val values = js.Object.freeze(
+      js.Array(
+        `m3.medium.elasticsearch`,
+        `m3.large.elasticsearch`,
+        `m3.xlarge.elasticsearch`,
+        `m3.2xlarge.elasticsearch`,
+        `m4.large.elasticsearch`,
+        `m4.xlarge.elasticsearch`,
+        `m4.2xlarge.elasticsearch`,
+        `m4.4xlarge.elasticsearch`,
+        `m4.10xlarge.elasticsearch`,
+        `m5.large.elasticsearch`,
+        `m5.xlarge.elasticsearch`,
+        `m5.2xlarge.elasticsearch`,
+        `m5.4xlarge.elasticsearch`,
+        `m5.12xlarge.elasticsearch`,
+        `r5.large.elasticsearch`,
+        `r5.xlarge.elasticsearch`,
+        `r5.2xlarge.elasticsearch`,
+        `r5.4xlarge.elasticsearch`,
+        `r5.12xlarge.elasticsearch`,
+        `c5.large.elasticsearch`,
+        `c5.xlarge.elasticsearch`,
+        `c5.2xlarge.elasticsearch`,
+        `c5.4xlarge.elasticsearch`,
+        `c5.9xlarge.elasticsearch`,
+        `c5.18xlarge.elasticsearch`,
+        `t2.micro.elasticsearch`,
+        `t2.small.elasticsearch`,
+        `t2.medium.elasticsearch`,
+        `r3.large.elasticsearch`,
+        `r3.xlarge.elasticsearch`,
+        `r3.2xlarge.elasticsearch`,
+        `r3.4xlarge.elasticsearch`,
+        `r3.8xlarge.elasticsearch`,
+        `i2.xlarge.elasticsearch`,
+        `i2.2xlarge.elasticsearch`,
+        `d2.xlarge.elasticsearch`,
+        `d2.2xlarge.elasticsearch`,
+        `d2.4xlarge.elasticsearch`,
+        `d2.8xlarge.elasticsearch`,
+        `c4.large.elasticsearch`,
+        `c4.xlarge.elasticsearch`,
+        `c4.2xlarge.elasticsearch`,
+        `c4.4xlarge.elasticsearch`,
+        `c4.8xlarge.elasticsearch`,
+        `r4.large.elasticsearch`,
+        `r4.xlarge.elasticsearch`,
+        `r4.2xlarge.elasticsearch`,
+        `r4.4xlarge.elasticsearch`,
+        `r4.8xlarge.elasticsearch`,
+        `r4.16xlarge.elasticsearch`,
+        `i3.large.elasticsearch`,
+        `i3.xlarge.elasticsearch`,
+        `i3.2xlarge.elasticsearch`,
+        `i3.4xlarge.elasticsearch`,
+        `i3.8xlarge.elasticsearch`,
+        `i3.16xlarge.elasticsearch`
+      )
     )
   }
 
@@ -1620,7 +1622,7 @@ package es {
     val SEARCH_SLOW_LOGS    = "SEARCH_SLOW_LOGS"
     val ES_APPLICATION_LOGS = "ES_APPLICATION_LOGS"
 
-    val values = IndexedSeq(INDEX_SLOW_LOGS, SEARCH_SLOW_LOGS, ES_APPLICATION_LOGS)
+    val values = js.Object.freeze(js.Array(INDEX_SLOW_LOGS, SEARCH_SLOW_LOGS, ES_APPLICATION_LOGS))
   }
 
   /**
@@ -1674,7 +1676,7 @@ package es {
     val Processing             = "Processing"
     val Active                 = "Active"
 
-    val values = IndexedSeq(RequiresIndexDocuments, Processing, Active)
+    val values = js.Object.freeze(js.Array(RequiresIndexDocuments, Processing, Active))
   }
 
   /**
@@ -1906,7 +1908,7 @@ package es {
     val PARTIAL_UPFRONT = "PARTIAL_UPFRONT"
     val NO_UPFRONT      = "NO_UPFRONT"
 
-    val values = IndexedSeq(ALL_UPFRONT, PARTIAL_UPFRONT, NO_UPFRONT)
+    val values = js.Object.freeze(js.Array(ALL_UPFRONT, PARTIAL_UPFRONT, NO_UPFRONT))
   }
 
   /**
@@ -2239,7 +2241,7 @@ package es {
     val SUCCEEDED_WITH_ISSUES = "SUCCEEDED_WITH_ISSUES"
     val FAILED                = "FAILED"
 
-    val values = IndexedSeq(IN_PROGRESS, SUCCEEDED, SUCCEEDED_WITH_ISSUES, FAILED)
+    val values = js.Object.freeze(js.Array(IN_PROGRESS, SUCCEEDED, SUCCEEDED_WITH_ISSUES, FAILED))
   }
 
   object UpgradeStepEnum {
@@ -2247,7 +2249,7 @@ package es {
     val SNAPSHOT          = "SNAPSHOT"
     val UPGRADE           = "UPGRADE"
 
-    val values = IndexedSeq(PRE_UPGRADE_CHECK, SNAPSHOT, UPGRADE)
+    val values = js.Object.freeze(js.Array(PRE_UPGRADE_CHECK, SNAPSHOT, UPGRADE))
   }
 
   /**
@@ -2356,7 +2358,7 @@ package es {
     val gp2      = "gp2"
     val io1      = "io1"
 
-    val values = IndexedSeq(standard, gp2, io1)
+    val values = js.Object.freeze(js.Array(standard, gp2, io1))
   }
 
   /**
diff --git a/services/eventbridge/src/main/scala/facade/amazonaws/services/EventBridge.scala b/services/eventbridge/src/main/scala/facade/amazonaws/services/EventBridge.scala
index 87ab9259f..713ec1901 100644
--- a/services/eventbridge/src/main/scala/facade/amazonaws/services/EventBridge.scala
+++ b/services/eventbridge/src/main/scala/facade/amazonaws/services/EventBridge.scala
@@ -204,7 +204,7 @@ package eventbridge {
     val ENABLED  = "ENABLED"
     val DISABLED = "DISABLED"
 
-    val values = IndexedSeq(ENABLED, DISABLED)
+    val values = js.Object.freeze(js.Array(ENABLED, DISABLED))
   }
 
   /**
@@ -786,7 +786,7 @@ package eventbridge {
     val ACTIVE  = "ACTIVE"
     val DELETED = "DELETED"
 
-    val values = IndexedSeq(PENDING, ACTIVE, DELETED)
+    val values = js.Object.freeze(js.Array(PENDING, ACTIVE, DELETED))
   }
 
   /**
@@ -836,7 +836,7 @@ package eventbridge {
     val EC2     = "EC2"
     val FARGATE = "FARGATE"
 
-    val values = IndexedSeq(EC2, FARGATE)
+    val values = js.Object.freeze(js.Array(EC2, FARGATE))
   }
 
   @js.native
@@ -1689,7 +1689,7 @@ package eventbridge {
     val ENABLED  = "ENABLED"
     val DISABLED = "DISABLED"
 
-    val values = IndexedSeq(ENABLED, DISABLED)
+    val values = js.Object.freeze(js.Array(ENABLED, DISABLED))
   }
 
   /**
diff --git a/services/firehose/src/main/scala/facade/amazonaws/services/Firehose.scala b/services/firehose/src/main/scala/facade/amazonaws/services/Firehose.scala
index 66e340080..26c11825e 100644
--- a/services/firehose/src/main/scala/facade/amazonaws/services/Firehose.scala
+++ b/services/firehose/src/main/scala/facade/amazonaws/services/Firehose.scala
@@ -197,7 +197,7 @@ package firehose {
     val ZIP          = "ZIP"
     val Snappy       = "Snappy"
 
-    val values = IndexedSeq(UNCOMPRESSED, GZIP, ZIP, Snappy)
+    val values = js.Object.freeze(js.Array(UNCOMPRESSED, GZIP, ZIP, Snappy))
   }
 
   /**
@@ -424,7 +424,7 @@ package firehose {
     val DISABLED  = "DISABLED"
     val DISABLING = "DISABLING"
 
-    val values = IndexedSeq(ENABLED, ENABLING, DISABLED, DISABLING)
+    val values = js.Object.freeze(js.Array(ENABLED, ENABLING, DISABLED, DISABLING))
   }
 
   object DeliveryStreamStatusEnum {
@@ -432,14 +432,14 @@ package firehose {
     val DELETING = "DELETING"
     val ACTIVE   = "ACTIVE"
 
-    val values = IndexedSeq(CREATING, DELETING, ACTIVE)
+    val values = js.Object.freeze(js.Array(CREATING, DELETING, ACTIVE))
   }
 
   object DeliveryStreamTypeEnum {
     val DirectPut             = "DirectPut"
     val KinesisStreamAsSource = "KinesisStreamAsSource"
 
-    val values = IndexedSeq(DirectPut, KinesisStreamAsSource)
+    val values = js.Object.freeze(js.Array(DirectPut, KinesisStreamAsSource))
   }
 
   @js.native
@@ -717,7 +717,7 @@ package firehose {
     val OneWeek    = "OneWeek"
     val OneMonth   = "OneMonth"
 
-    val values = IndexedSeq(NoRotation, OneHour, OneDay, OneWeek, OneMonth)
+    val values = js.Object.freeze(js.Array(NoRotation, OneHour, OneDay, OneWeek, OneMonth))
   }
 
   /**
@@ -742,7 +742,7 @@ package firehose {
     val FailedDocumentsOnly = "FailedDocumentsOnly"
     val AllDocuments        = "AllDocuments"
 
-    val values = IndexedSeq(FailedDocumentsOnly, AllDocuments)
+    val values = js.Object.freeze(js.Array(FailedDocumentsOnly, AllDocuments))
   }
 
   /**
@@ -933,7 +933,7 @@ package firehose {
     val Raw   = "Raw"
     val Event = "Event"
 
-    val values = IndexedSeq(Raw, Event)
+    val values = js.Object.freeze(js.Array(Raw, Event))
   }
 
   /**
@@ -1128,7 +1128,7 @@ package firehose {
   object NoEncryptionConfigEnum {
     val NoEncryption = "NoEncryption"
 
-    val values = IndexedSeq(NoEncryption)
+    val values = js.Object.freeze(js.Array(NoEncryption))
   }
 
   /**
@@ -1162,14 +1162,14 @@ package firehose {
     val ZLIB   = "ZLIB"
     val SNAPPY = "SNAPPY"
 
-    val values = IndexedSeq(NONE, ZLIB, SNAPPY)
+    val values = js.Object.freeze(js.Array(NONE, ZLIB, SNAPPY))
   }
 
   object OrcFormatVersionEnum {
     val V0_11 = "V0_11"
     val V0_12 = "V0_12"
 
-    val values = IndexedSeq(V0_11, V0_12)
+    val values = js.Object.freeze(js.Array(V0_11, V0_12))
   }
 
   /**
@@ -1242,7 +1242,7 @@ package firehose {
     val GZIP         = "GZIP"
     val SNAPPY       = "SNAPPY"
 
-    val values = IndexedSeq(UNCOMPRESSED, GZIP, SNAPPY)
+    val values = js.Object.freeze(js.Array(UNCOMPRESSED, GZIP, SNAPPY))
   }
 
   /**
@@ -1282,7 +1282,7 @@ package firehose {
     val V1 = "V1"
     val V2 = "V2"
 
-    val values = IndexedSeq(V1, V2)
+    val values = js.Object.freeze(js.Array(V1, V2))
   }
 
   /**
@@ -1359,13 +1359,14 @@ package firehose {
     val BufferSizeInMBs         = "BufferSizeInMBs"
     val BufferIntervalInSeconds = "BufferIntervalInSeconds"
 
-    val values = IndexedSeq(LambdaArn, NumberOfRetries, RoleArn, BufferSizeInMBs, BufferIntervalInSeconds)
+    val values =
+      js.Object.freeze(js.Array(LambdaArn, NumberOfRetries, RoleArn, BufferSizeInMBs, BufferIntervalInSeconds))
   }
 
   object ProcessorTypeEnum {
     val Lambda = "Lambda"
 
-    val values = IndexedSeq(Lambda)
+    val values = js.Object.freeze(js.Array(Lambda))
   }
 
   @js.native
@@ -1662,14 +1663,14 @@ package firehose {
     val Disabled = "Disabled"
     val Enabled  = "Enabled"
 
-    val values = IndexedSeq(Disabled, Enabled)
+    val values = js.Object.freeze(js.Array(Disabled, Enabled))
   }
 
   object S3BackupModeEnum {
     val Disabled = "Disabled"
     val Enabled  = "Enabled"
 
-    val values = IndexedSeq(Disabled, Enabled)
+    val values = js.Object.freeze(js.Array(Disabled, Enabled))
   }
 
   /**
@@ -2023,7 +2024,7 @@ package firehose {
     val FailedEventsOnly = "FailedEventsOnly"
     val AllEvents        = "AllEvents"
 
-    val values = IndexedSeq(FailedEventsOnly, AllEvents)
+    val values = js.Object.freeze(js.Array(FailedEventsOnly, AllEvents))
   }
 
   @js.native
diff --git a/services/fms/src/main/scala/facade/amazonaws/services/FMS.scala b/services/fms/src/main/scala/facade/amazonaws/services/FMS.scala
index c8657cbd0..a0fd86bc2 100644
--- a/services/fms/src/main/scala/facade/amazonaws/services/FMS.scala
+++ b/services/fms/src/main/scala/facade/amazonaws/services/FMS.scala
@@ -105,7 +105,7 @@ package fms {
     val DELETING         = "DELETING"
     val DELETED          = "DELETED"
 
-    val values = IndexedSeq(READY, CREATING, PENDING_DELETION, DELETING, DELETED)
+    val values = js.Object.freeze(js.Array(READY, CREATING, PENDING_DELETION, DELETING, DELETED))
   }
 
   @js.native
@@ -152,7 +152,7 @@ package fms {
   object CustomerPolicyScopeIdTypeEnum {
     val ACCOUNT = "ACCOUNT"
 
-    val values = IndexedSeq(ACCOUNT)
+    val values = js.Object.freeze(js.Array(ACCOUNT))
   }
 
   @js.native
@@ -192,7 +192,7 @@ package fms {
     val AWSWAF             = "AWSWAF"
     val AWSSHIELD_ADVANCED = "AWSSHIELD_ADVANCED"
 
-    val values = IndexedSeq(AWSCONFIG, AWSWAF, AWSSHIELD_ADVANCED)
+    val values = js.Object.freeze(js.Array(AWSCONFIG, AWSWAF, AWSSHIELD_ADVANCED))
   }
 
   @js.native
@@ -656,7 +656,7 @@ package fms {
     val COMPLIANT     = "COMPLIANT"
     val NON_COMPLIANT = "NON_COMPLIANT"
 
-    val values = IndexedSeq(COMPLIANT, NON_COMPLIANT)
+    val values = js.Object.freeze(js.Array(COMPLIANT, NON_COMPLIANT))
   }
 
   /**
@@ -797,7 +797,7 @@ package fms {
     val WAF             = "WAF"
     val SHIELD_ADVANCED = "SHIELD_ADVANCED"
 
-    val values = IndexedSeq(WAF, SHIELD_ADVANCED)
+    val values = js.Object.freeze(js.Array(WAF, SHIELD_ADVANCED))
   }
 
   object ViolationReasonEnum {
@@ -806,11 +806,13 @@ package fms {
     val RESOURCE_INCORRECT_WEB_ACL         = "RESOURCE_INCORRECT_WEB_ACL"
     val RESOURCE_MISSING_SHIELD_PROTECTION = "RESOURCE_MISSING_SHIELD_PROTECTION"
 
-    val values = IndexedSeq(
-      WEB_ACL_MISSING_RULE_GROUP,
-      RESOURCE_MISSING_WEB_ACL,
-      RESOURCE_INCORRECT_WEB_ACL,
-      RESOURCE_MISSING_SHIELD_PROTECTION
+    val values = js.Object.freeze(
+      js.Array(
+        WEB_ACL_MISSING_RULE_GROUP,
+        RESOURCE_MISSING_WEB_ACL,
+        RESOURCE_INCORRECT_WEB_ACL,
+        RESOURCE_MISSING_SHIELD_PROTECTION
+      )
     )
   }
 }
diff --git a/services/forecast/src/main/scala/facade/amazonaws/services/Forecast.scala b/services/forecast/src/main/scala/facade/amazonaws/services/Forecast.scala
index 5a14b2603..617ea757e 100644
--- a/services/forecast/src/main/scala/facade/amazonaws/services/Forecast.scala
+++ b/services/forecast/src/main/scala/facade/amazonaws/services/Forecast.scala
@@ -159,7 +159,7 @@ package forecast {
     val float     = "float"
     val timestamp = "timestamp"
 
-    val values = IndexedSeq(string, integer, float, timestamp)
+    val values = js.Object.freeze(js.Array(string, integer, float, timestamp))
   }
 
   /**
@@ -616,7 +616,7 @@ package forecast {
     val RELATED_TIME_SERIES = "RELATED_TIME_SERIES"
     val ITEM_METADATA       = "ITEM_METADATA"
 
-    val values = IndexedSeq(TARGET_TIME_SERIES, RELATED_TIME_SERIES, ITEM_METADATA)
+    val values = js.Object.freeze(js.Array(TARGET_TIME_SERIES, RELATED_TIME_SERIES, ITEM_METADATA))
   }
 
   @js.native
@@ -1090,7 +1090,8 @@ package forecast {
     val WEB_TRAFFIC        = "WEB_TRAFFIC"
     val METRICS            = "METRICS"
 
-    val values = IndexedSeq(RETAIL, CUSTOM, INVENTORY_PLANNING, EC2_CAPACITY, WORK_FORCE, WEB_TRAFFIC, METRICS)
+    val values =
+      js.Object.freeze(js.Array(RETAIL, CUSTOM, INVENTORY_PLANNING, EC2_CAPACITY, WORK_FORCE, WEB_TRAFFIC, METRICS))
   }
 
   /**
@@ -1163,7 +1164,7 @@ package forecast {
     val SUMMARY  = "SUMMARY"
     val COMPUTED = "COMPUTED"
 
-    val values = IndexedSeq(SUMMARY, COMPUTED)
+    val values = js.Object.freeze(js.Array(SUMMARY, COMPUTED))
   }
 
   /**
@@ -1258,7 +1259,7 @@ package forecast {
   object FeaturizationMethodNameEnum {
     val filling = "filling"
 
-    val values = IndexedSeq(filling)
+    val values = js.Object.freeze(js.Array(filling))
   }
 
   /**
@@ -1291,7 +1292,7 @@ package forecast {
     val IS     = "IS"
     val IS_NOT = "IS_NOT"
 
-    val values = IndexedSeq(IS, IS_NOT)
+    val values = js.Object.freeze(js.Array(IS, IS_NOT))
   }
 
   /**
@@ -1814,7 +1815,7 @@ package forecast {
     val Logarithmic        = "Logarithmic"
     val ReverseLogarithmic = "ReverseLogarithmic"
 
-    val values = IndexedSeq(Auto, Linear, Logarithmic, ReverseLogarithmic)
+    val values = js.Object.freeze(js.Array(Auto, Linear, Logarithmic, ReverseLogarithmic))
   }
 
   /**
diff --git a/services/fsx/src/main/scala/facade/amazonaws/services/FSx.scala b/services/fsx/src/main/scala/facade/amazonaws/services/FSx.scala
index 81bb0ea08..03c1d1709 100644
--- a/services/fsx/src/main/scala/facade/amazonaws/services/FSx.scala
+++ b/services/fsx/src/main/scala/facade/amazonaws/services/FSx.scala
@@ -209,7 +209,7 @@ package fsx {
     val DELETED   = "DELETED"
     val FAILED    = "FAILED"
 
-    val values = IndexedSeq(AVAILABLE, CREATING, DELETED, FAILED)
+    val values = js.Object.freeze(js.Array(AVAILABLE, CREATING, DELETED, FAILED))
   }
 
   /**
@@ -219,7 +219,7 @@ package fsx {
     val AUTOMATIC      = "AUTOMATIC"
     val USER_INITIATED = "USER_INITIATED"
 
-    val values = IndexedSeq(AUTOMATIC, USER_INITIATED)
+    val values = js.Object.freeze(js.Array(AUTOMATIC, USER_INITIATED))
   }
 
   /**
@@ -797,7 +797,7 @@ package fsx {
     val MISCONFIGURED = "MISCONFIGURED"
     val UPDATING      = "UPDATING"
 
-    val values = IndexedSeq(AVAILABLE, CREATING, FAILED, DELETING, MISCONFIGURED, UPDATING)
+    val values = js.Object.freeze(js.Array(AVAILABLE, CREATING, FAILED, DELETING, MISCONFIGURED, UPDATING))
   }
 
   /**
@@ -807,7 +807,7 @@ package fsx {
     val PATCHING   = "PATCHING"
     val BACKING_UP = "BACKING_UP"
 
-    val values = IndexedSeq(PATCHING, BACKING_UP)
+    val values = js.Object.freeze(js.Array(PATCHING, BACKING_UP))
   }
 
   /**
@@ -817,7 +817,7 @@ package fsx {
     val WINDOWS = "WINDOWS"
     val LUSTRE  = "LUSTRE"
 
-    val values = IndexedSeq(WINDOWS, LUSTRE)
+    val values = js.Object.freeze(js.Array(WINDOWS, LUSTRE))
   }
 
   /**
@@ -848,7 +848,7 @@ package fsx {
     val `file-system-id` = "file-system-id"
     val `backup-type`    = "backup-type"
 
-    val values = IndexedSeq(`file-system-id`, `backup-type`)
+    val values = js.Object.freeze(js.Array(`file-system-id`, `backup-type`))
   }
 
   /**
diff --git a/services/gamelift/src/main/scala/facade/amazonaws/services/GameLift.scala b/services/gamelift/src/main/scala/facade/amazonaws/services/GameLift.scala
index a3aefdf80..5630dfbb2 100644
--- a/services/gamelift/src/main/scala/facade/amazonaws/services/GameLift.scala
+++ b/services/gamelift/src/main/scala/facade/amazonaws/services/GameLift.scala
@@ -446,7 +446,7 @@ package gamelift {
     val ACCEPT = "ACCEPT"
     val REJECT = "REJECT"
 
-    val values = IndexedSeq(ACCEPT, REJECT)
+    val values = js.Object.freeze(js.Array(ACCEPT, REJECT))
   }
 
   /**
@@ -546,7 +546,7 @@ package gamelift {
     val AUTOMATIC = "AUTOMATIC"
     val MANUAL    = "MANUAL"
 
-    val values = IndexedSeq(AUTOMATIC, MANUAL)
+    val values = js.Object.freeze(js.Array(AUTOMATIC, MANUAL))
   }
 
   /**
@@ -596,7 +596,7 @@ package gamelift {
     val READY       = "READY"
     val FAILED      = "FAILED"
 
-    val values = IndexedSeq(INITIALIZED, READY, FAILED)
+    val values = js.Object.freeze(js.Array(INITIALIZED, READY, FAILED))
   }
 
   object ComparisonOperatorTypeEnum {
@@ -605,8 +605,9 @@ package gamelift {
     val LessThanThreshold             = "LessThanThreshold"
     val LessThanOrEqualToThreshold    = "LessThanOrEqualToThreshold"
 
-    val values =
-      IndexedSeq(GreaterThanOrEqualToThreshold, GreaterThanThreshold, LessThanThreshold, LessThanOrEqualToThreshold)
+    val values = js.Object.freeze(
+      js.Array(GreaterThanOrEqualToThreshold, GreaterThanThreshold, LessThanThreshold, LessThanOrEqualToThreshold)
+    )
   }
 
   /**
@@ -2579,41 +2580,43 @@ package gamelift {
     val `m4.4xlarge`  = "m4.4xlarge"
     val `m4.10xlarge` = "m4.10xlarge"
 
-    val values = IndexedSeq(
-      `t2.micro`,
-      `t2.small`,
-      `t2.medium`,
-      `t2.large`,
-      `c3.large`,
-      `c3.xlarge`,
-      `c3.2xlarge`,
-      `c3.4xlarge`,
-      `c3.8xlarge`,
-      `c4.large`,
-      `c4.xlarge`,
-      `c4.2xlarge`,
-      `c4.4xlarge`,
-      `c4.8xlarge`,
-      `r3.large`,
-      `r3.xlarge`,
-      `r3.2xlarge`,
-      `r3.4xlarge`,
-      `r3.8xlarge`,
-      `r4.large`,
-      `r4.xlarge`,
-      `r4.2xlarge`,
-      `r4.4xlarge`,
-      `r4.8xlarge`,
-      `r4.16xlarge`,
-      `m3.medium`,
-      `m3.large`,
-      `m3.xlarge`,
-      `m3.2xlarge`,
-      `m4.large`,
-      `m4.xlarge`,
-      `m4.2xlarge`,
-      `m4.4xlarge`,
-      `m4.10xlarge`
+    val values = js.Object.freeze(
+      js.Array(
+        `t2.micro`,
+        `t2.small`,
+        `t2.medium`,
+        `t2.large`,
+        `c3.large`,
+        `c3.xlarge`,
+        `c3.2xlarge`,
+        `c3.4xlarge`,
+        `c3.8xlarge`,
+        `c4.large`,
+        `c4.xlarge`,
+        `c4.2xlarge`,
+        `c4.4xlarge`,
+        `c4.8xlarge`,
+        `r3.large`,
+        `r3.xlarge`,
+        `r3.2xlarge`,
+        `r3.4xlarge`,
+        `r3.8xlarge`,
+        `r4.large`,
+        `r4.xlarge`,
+        `r4.2xlarge`,
+        `r4.4xlarge`,
+        `r4.8xlarge`,
+        `r4.16xlarge`,
+        `m3.medium`,
+        `m3.large`,
+        `m3.xlarge`,
+        `m3.2xlarge`,
+        `m4.large`,
+        `m4.xlarge`,
+        `m4.2xlarge`,
+        `m4.4xlarge`,
+        `m4.10xlarge`
+      )
     )
   }
 
@@ -2685,47 +2688,49 @@ package gamelift {
     val FLEET_VPC_PEERING_DELETED                        = "FLEET_VPC_PEERING_DELETED"
     val INSTANCE_INTERRUPTED                             = "INSTANCE_INTERRUPTED"
 
-    val values = IndexedSeq(
-      GENERIC_EVENT,
-      FLEET_CREATED,
-      FLEET_DELETED,
-      FLEET_SCALING_EVENT,
-      FLEET_STATE_DOWNLOADING,
-      FLEET_STATE_VALIDATING,
-      FLEET_STATE_BUILDING,
-      FLEET_STATE_ACTIVATING,
-      FLEET_STATE_ACTIVE,
-      FLEET_STATE_ERROR,
-      FLEET_INITIALIZATION_FAILED,
-      FLEET_BINARY_DOWNLOAD_FAILED,
-      FLEET_VALIDATION_LAUNCH_PATH_NOT_FOUND,
-      FLEET_VALIDATION_EXECUTABLE_RUNTIME_FAILURE,
-      FLEET_VALIDATION_TIMED_OUT,
-      FLEET_ACTIVATION_FAILED,
-      FLEET_ACTIVATION_FAILED_NO_INSTANCES,
-      FLEET_NEW_GAME_SESSION_PROTECTION_POLICY_UPDATED,
-      SERVER_PROCESS_INVALID_PATH,
-      SERVER_PROCESS_SDK_INITIALIZATION_TIMEOUT,
-      SERVER_PROCESS_PROCESS_READY_TIMEOUT,
-      SERVER_PROCESS_CRASHED,
-      SERVER_PROCESS_TERMINATED_UNHEALTHY,
-      SERVER_PROCESS_FORCE_TERMINATED,
-      SERVER_PROCESS_PROCESS_EXIT_TIMEOUT,
-      GAME_SESSION_ACTIVATION_TIMEOUT,
-      FLEET_CREATION_EXTRACTING_BUILD,
-      FLEET_CREATION_RUNNING_INSTALLER,
-      FLEET_CREATION_VALIDATING_RUNTIME_CONFIG,
-      FLEET_VPC_PEERING_SUCCEEDED,
-      FLEET_VPC_PEERING_FAILED,
-      FLEET_VPC_PEERING_DELETED,
-      INSTANCE_INTERRUPTED
+    val values = js.Object.freeze(
+      js.Array(
+        GENERIC_EVENT,
+        FLEET_CREATED,
+        FLEET_DELETED,
+        FLEET_SCALING_EVENT,
+        FLEET_STATE_DOWNLOADING,
+        FLEET_STATE_VALIDATING,
+        FLEET_STATE_BUILDING,
+        FLEET_STATE_ACTIVATING,
+        FLEET_STATE_ACTIVE,
+        FLEET_STATE_ERROR,
+        FLEET_INITIALIZATION_FAILED,
+        FLEET_BINARY_DOWNLOAD_FAILED,
+        FLEET_VALIDATION_LAUNCH_PATH_NOT_FOUND,
+        FLEET_VALIDATION_EXECUTABLE_RUNTIME_FAILURE,
+        FLEET_VALIDATION_TIMED_OUT,
+        FLEET_ACTIVATION_FAILED,
+        FLEET_ACTIVATION_FAILED_NO_INSTANCES,
+        FLEET_NEW_GAME_SESSION_PROTECTION_POLICY_UPDATED,
+        SERVER_PROCESS_INVALID_PATH,
+        SERVER_PROCESS_SDK_INITIALIZATION_TIMEOUT,
+        SERVER_PROCESS_PROCESS_READY_TIMEOUT,
+        SERVER_PROCESS_CRASHED,
+        SERVER_PROCESS_TERMINATED_UNHEALTHY,
+        SERVER_PROCESS_FORCE_TERMINATED,
+        SERVER_PROCESS_PROCESS_EXIT_TIMEOUT,
+        GAME_SESSION_ACTIVATION_TIMEOUT,
+        FLEET_CREATION_EXTRACTING_BUILD,
+        FLEET_CREATION_RUNNING_INSTALLER,
+        FLEET_CREATION_VALIDATING_RUNTIME_CONFIG,
+        FLEET_VPC_PEERING_SUCCEEDED,
+        FLEET_VPC_PEERING_FAILED,
+        FLEET_VPC_PEERING_DELETED,
+        INSTANCE_INTERRUPTED
+      )
     )
   }
 
   object FleetActionEnum {
     val AUTO_SCALING = "AUTO_SCALING"
 
-    val values = IndexedSeq(AUTO_SCALING)
+    val values = js.Object.freeze(js.Array(AUTO_SCALING))
   }
 
   /**
@@ -2880,14 +2885,16 @@ package gamelift {
     val ERROR       = "ERROR"
     val TERMINATED  = "TERMINATED"
 
-    val values = IndexedSeq(NEW, DOWNLOADING, VALIDATING, BUILDING, ACTIVATING, ACTIVE, DELETING, ERROR, TERMINATED)
+    val values = js.Object.freeze(
+      js.Array(NEW, DOWNLOADING, VALIDATING, BUILDING, ACTIVATING, ACTIVE, DELETING, ERROR, TERMINATED)
+    )
   }
 
   object FleetTypeEnum {
     val ON_DEMAND = "ON_DEMAND"
     val SPOT      = "SPOT"
 
-    val values = IndexedSeq(ON_DEMAND, SPOT)
+    val values = js.Object.freeze(js.Array(ON_DEMAND, SPOT))
   }
 
   /**
@@ -3163,7 +3170,7 @@ package gamelift {
     val CANCELLED = "CANCELLED"
     val TIMED_OUT = "TIMED_OUT"
 
-    val values = IndexedSeq(PENDING, FULFILLED, CANCELLED, TIMED_OUT)
+    val values = js.Object.freeze(js.Array(PENDING, FULFILLED, CANCELLED, TIMED_OUT))
   }
 
   /**
@@ -3232,13 +3239,13 @@ package gamelift {
     val TERMINATING = "TERMINATING"
     val ERROR       = "ERROR"
 
-    val values = IndexedSeq(ACTIVE, ACTIVATING, TERMINATED, TERMINATING, ERROR)
+    val values = js.Object.freeze(js.Array(ACTIVE, ACTIVATING, TERMINATED, TERMINATING, ERROR))
   }
 
   object GameSessionStatusReasonEnum {
     val INTERRUPTED = "INTERRUPTED"
 
-    val values = IndexedSeq(INTERRUPTED)
+    val values = js.Object.freeze(js.Array(INTERRUPTED))
   }
 
   /**
@@ -3412,7 +3419,7 @@ package gamelift {
     val ACTIVE      = "ACTIVE"
     val TERMINATING = "TERMINATING"
 
-    val values = IndexedSeq(PENDING, ACTIVE, TERMINATING)
+    val values = js.Object.freeze(js.Array(PENDING, ACTIVE, TERMINATING))
   }
 
   /**
@@ -3448,7 +3455,7 @@ package gamelift {
     val TCP = "TCP"
     val UDP = "UDP"
 
-    val values = IndexedSeq(TCP, UDP)
+    val values = js.Object.freeze(js.Array(TCP, UDP))
   }
 
   /**
@@ -3717,7 +3724,9 @@ package gamelift {
     val SEARCHING           = "SEARCHING"
     val TIMED_OUT           = "TIMED_OUT"
 
-    val values = IndexedSeq(CANCELLED, COMPLETED, FAILED, PLACING, QUEUED, REQUIRES_ACCEPTANCE, SEARCHING, TIMED_OUT)
+    val values = js.Object.freeze(
+      js.Array(CANCELLED, COMPLETED, FAILED, PLACING, QUEUED, REQUIRES_ACCEPTANCE, SEARCHING, TIMED_OUT)
+    )
   }
 
   /**
@@ -3809,18 +3818,20 @@ package gamelift {
     val QueueDepth                   = "QueueDepth"
     val WaitTime                     = "WaitTime"
 
-    val values = IndexedSeq(
-      ActivatingGameSessions,
-      ActiveGameSessions,
-      ActiveInstances,
-      AvailableGameSessions,
-      AvailablePlayerSessions,
-      CurrentPlayerSessions,
-      IdleInstances,
-      PercentAvailableGameSessions,
-      PercentIdleInstances,
-      QueueDepth,
-      WaitTime
+    val values = js.Object.freeze(
+      js.Array(
+        ActivatingGameSessions,
+        ActiveGameSessions,
+        ActiveInstances,
+        AvailableGameSessions,
+        AvailablePlayerSessions,
+        CurrentPlayerSessions,
+        IdleInstances,
+        PercentAvailableGameSessions,
+        PercentIdleInstances,
+        QueueDepth,
+        WaitTime
+      )
     )
   }
 
@@ -3828,7 +3839,7 @@ package gamelift {
     val WINDOWS_2012 = "WINDOWS_2012"
     val AMAZON_LINUX = "AMAZON_LINUX"
 
-    val values = IndexedSeq(WINDOWS_2012, AMAZON_LINUX)
+    val values = js.Object.freeze(js.Array(WINDOWS_2012, AMAZON_LINUX))
   }
 
   /**
@@ -3996,7 +4007,7 @@ package gamelift {
     val ACCEPT_ALL = "ACCEPT_ALL"
     val DENY_ALL   = "DENY_ALL"
 
-    val values = IndexedSeq(ACCEPT_ALL, DENY_ALL)
+    val values = js.Object.freeze(js.Array(ACCEPT_ALL, DENY_ALL))
   }
 
   object PlayerSessionStatusEnum {
@@ -4005,21 +4016,21 @@ package gamelift {
     val COMPLETED = "COMPLETED"
     val TIMEDOUT  = "TIMEDOUT"
 
-    val values = IndexedSeq(RESERVED, ACTIVE, COMPLETED, TIMEDOUT)
+    val values = js.Object.freeze(js.Array(RESERVED, ACTIVE, COMPLETED, TIMEDOUT))
   }
 
   object PolicyTypeEnum {
     val RuleBased   = "RuleBased"
     val TargetBased = "TargetBased"
 
-    val values = IndexedSeq(RuleBased, TargetBased)
+    val values = js.Object.freeze(js.Array(RuleBased, TargetBased))
   }
 
   object ProtectionPolicyEnum {
     val NoProtection   = "NoProtection"
     val FullProtection = "FullProtection"
 
-    val values = IndexedSeq(NoProtection, FullProtection)
+    val values = js.Object.freeze(js.Array(NoProtection, FullProtection))
   }
 
   /**
@@ -4222,7 +4233,7 @@ package gamelift {
     val SIMPLE   = "SIMPLE"
     val TERMINAL = "TERMINAL"
 
-    val values = IndexedSeq(SIMPLE, TERMINAL)
+    val values = js.Object.freeze(js.Array(SIMPLE, TERMINAL))
   }
 
   /**
@@ -4307,7 +4318,7 @@ package gamelift {
     val ExactCapacity           = "ExactCapacity"
     val PercentChangeInCapacity = "PercentChangeInCapacity"
 
-    val values = IndexedSeq(ChangeInCapacity, ExactCapacity, PercentChangeInCapacity)
+    val values = js.Object.freeze(js.Array(ChangeInCapacity, ExactCapacity, PercentChangeInCapacity))
   }
 
   /**
@@ -4378,7 +4389,8 @@ package gamelift {
     val DELETED          = "DELETED"
     val ERROR            = "ERROR"
 
-    val values = IndexedSeq(ACTIVE, UPDATE_REQUESTED, UPDATING, DELETE_REQUESTED, DELETING, DELETED, ERROR)
+    val values =
+      js.Object.freeze(js.Array(ACTIVE, UPDATE_REQUESTED, UPDATING, DELETE_REQUESTED, DELETING, DELETED, ERROR))
   }
 
   /**
diff --git a/services/glacier/src/main/scala/facade/amazonaws/services/Glacier.scala b/services/glacier/src/main/scala/facade/amazonaws/services/Glacier.scala
index 38bb43e39..3aa237fe5 100644
--- a/services/glacier/src/main/scala/facade/amazonaws/services/Glacier.scala
+++ b/services/glacier/src/main/scala/facade/amazonaws/services/Glacier.scala
@@ -206,7 +206,7 @@ package glacier {
     val InventoryRetrieval = "InventoryRetrieval"
     val Select             = "Select"
 
-    val values = IndexedSeq(ArchiveRetrieval, InventoryRetrieval, Select)
+    val values = js.Object.freeze(js.Array(ArchiveRetrieval, InventoryRetrieval, Select))
   }
 
   /**
@@ -332,14 +332,16 @@ package glacier {
     val `bucket-owner-read`         = "bucket-owner-read"
     val `bucket-owner-full-control` = "bucket-owner-full-control"
 
-    val values = IndexedSeq(
-      `private`,
-      `public-read`,
-      `public-read-write`,
-      `aws-exec-read`,
-      `authenticated-read`,
-      `bucket-owner-read`,
-      `bucket-owner-full-control`
+    val values = js.Object.freeze(
+      js.Array(
+        `private`,
+        `public-read`,
+        `public-read-write`,
+        `aws-exec-read`,
+        `authenticated-read`,
+        `bucket-owner-read`,
+        `bucket-owner-full-control`
+      )
     )
   }
 
@@ -686,13 +688,13 @@ package glacier {
     val `aws:kms` = "aws:kms"
     val AES256    = "AES256"
 
-    val values = IndexedSeq(`aws:kms`, AES256)
+    val values = js.Object.freeze(js.Array(`aws:kms`, AES256))
   }
 
   object ExpressionTypeEnum {
     val SQL = "SQL"
 
-    val values = IndexedSeq(SQL)
+    val values = js.Object.freeze(js.Array(SQL))
   }
 
   object FileHeaderInfoEnum {
@@ -700,7 +702,7 @@ package glacier {
     val IGNORE = "IGNORE"
     val NONE   = "NONE"
 
-    val values = IndexedSeq(USE, IGNORE, NONE)
+    val values = js.Object.freeze(js.Array(USE, IGNORE, NONE))
   }
 
   /**
@@ -1695,7 +1697,7 @@ package glacier {
     val READ         = "READ"
     val READ_ACP     = "READ_ACP"
 
-    val values = IndexedSeq(FULL_CONTROL, WRITE, WRITE_ACP, READ, READ_ACP)
+    val values = js.Object.freeze(js.Array(FULL_CONTROL, WRITE, WRITE_ACP, READ, READ_ACP))
   }
 
   /**
@@ -1758,7 +1760,7 @@ package glacier {
     val ALWAYS   = "ALWAYS"
     val ASNEEDED = "ASNEEDED"
 
-    val values = IndexedSeq(ALWAYS, ASNEEDED)
+    val values = js.Object.freeze(js.Array(ALWAYS, ASNEEDED))
   }
 
   /**
@@ -1933,7 +1935,7 @@ package glacier {
     val Succeeded  = "Succeeded"
     val Failed     = "Failed"
 
-    val values = IndexedSeq(InProgress, Succeeded, Failed)
+    val values = js.Object.freeze(js.Array(InProgress, Succeeded, Failed))
   }
 
   object StorageClassEnum {
@@ -1941,7 +1943,7 @@ package glacier {
     val REDUCED_REDUNDANCY = "REDUCED_REDUNDANCY"
     val STANDARD_IA        = "STANDARD_IA"
 
-    val values = IndexedSeq(STANDARD, REDUCED_REDUNDANCY, STANDARD_IA)
+    val values = js.Object.freeze(js.Array(STANDARD, REDUCED_REDUNDANCY, STANDARD_IA))
   }
 
   object TypeEnum {
@@ -1949,7 +1951,7 @@ package glacier {
     val CanonicalUser         = "CanonicalUser"
     val Group                 = "Group"
 
-    val values = IndexedSeq(AmazonCustomerByEmail, CanonicalUser, Group)
+    val values = js.Object.freeze(js.Array(AmazonCustomerByEmail, CanonicalUser, Group))
   }
 
   /**
diff --git a/services/globalaccelerator/src/main/scala/facade/amazonaws/services/GlobalAccelerator.scala b/services/globalaccelerator/src/main/scala/facade/amazonaws/services/GlobalAccelerator.scala
index 2914460fc..f4759151a 100644
--- a/services/globalaccelerator/src/main/scala/facade/amazonaws/services/GlobalAccelerator.scala
+++ b/services/globalaccelerator/src/main/scala/facade/amazonaws/services/GlobalAccelerator.scala
@@ -172,14 +172,14 @@ package globalaccelerator {
     val DEPLOYED    = "DEPLOYED"
     val IN_PROGRESS = "IN_PROGRESS"
 
-    val values = IndexedSeq(DEPLOYED, IN_PROGRESS)
+    val values = js.Object.freeze(js.Array(DEPLOYED, IN_PROGRESS))
   }
 
   object ClientAffinityEnum {
     val NONE      = "NONE"
     val SOURCE_IP = "SOURCE_IP"
 
-    val values = IndexedSeq(NONE, SOURCE_IP)
+    val values = js.Object.freeze(js.Array(NONE, SOURCE_IP))
   }
 
   @js.native
@@ -598,7 +598,7 @@ package globalaccelerator {
     val HTTP  = "HTTP"
     val HTTPS = "HTTPS"
 
-    val values = IndexedSeq(TCP, HTTP, HTTPS)
+    val values = js.Object.freeze(js.Array(TCP, HTTP, HTTPS))
   }
 
   object HealthStateEnum {
@@ -606,13 +606,13 @@ package globalaccelerator {
     val HEALTHY   = "HEALTHY"
     val UNHEALTHY = "UNHEALTHY"
 
-    val values = IndexedSeq(INITIAL, HEALTHY, UNHEALTHY)
+    val values = js.Object.freeze(js.Array(INITIAL, HEALTHY, UNHEALTHY))
   }
 
   object IpAddressTypeEnum {
     val IPV4 = "IPV4"
 
-    val values = IndexedSeq(IPV4)
+    val values = js.Object.freeze(js.Array(IPV4))
   }
 
   /**
@@ -806,7 +806,7 @@ package globalaccelerator {
     val TCP = "TCP"
     val UDP = "UDP"
 
-    val values = IndexedSeq(TCP, UDP)
+    val values = js.Object.freeze(js.Array(TCP, UDP))
   }
 
   @js.native
diff --git a/services/glue/src/main/scala/facade/amazonaws/services/Glue.scala b/services/glue/src/main/scala/facade/amazonaws/services/Glue.scala
index 1edbd5739..1b3605513 100644
--- a/services/glue/src/main/scala/facade/amazonaws/services/Glue.scala
+++ b/services/glue/src/main/scala/facade/amazonaws/services/Glue.scala
@@ -1223,7 +1223,7 @@ package glue {
     val DISABLED  = "DISABLED"
     val `SSE-KMS` = "SSE-KMS"
 
-    val values = IndexedSeq(DISABLED, `SSE-KMS`)
+    val values = js.Object.freeze(js.Array(DISABLED, `SSE-KMS`))
   }
 
   /**
@@ -1349,7 +1349,7 @@ package glue {
     val DISABLED  = "DISABLED"
     val `SSE-KMS` = "SSE-KMS"
 
-    val values = IndexedSeq(DISABLED, `SSE-KMS`)
+    val values = js.Object.freeze(js.Array(DISABLED, `SSE-KMS`))
   }
 
   /**
@@ -1469,7 +1469,7 @@ package glue {
     val GREATER_THAN_EQUALS = "GREATER_THAN_EQUALS"
     val LESS_THAN_EQUALS    = "LESS_THAN_EQUALS"
 
-    val values = IndexedSeq(EQUALS, GREATER_THAN, LESS_THAN, GREATER_THAN_EQUALS, LESS_THAN_EQUALS)
+    val values = js.Object.freeze(js.Array(EQUALS, GREATER_THAN, LESS_THAN, GREATER_THAN_EQUALS, LESS_THAN_EQUALS))
   }
 
   /**
@@ -1651,20 +1651,22 @@ package glue {
     val JDBC_CONNECTION_URL    = "JDBC_CONNECTION_URL"
     val JDBC_ENFORCE_SSL       = "JDBC_ENFORCE_SSL"
 
-    val values = IndexedSeq(
-      HOST,
-      PORT,
-      USERNAME,
-      PASSWORD,
-      ENCRYPTED_PASSWORD,
-      JDBC_DRIVER_JAR_URI,
-      JDBC_DRIVER_CLASS_NAME,
-      JDBC_ENGINE,
-      JDBC_ENGINE_VERSION,
-      CONFIG_FILES,
-      INSTANCE_ID,
-      JDBC_CONNECTION_URL,
-      JDBC_ENFORCE_SSL
+    val values = js.Object.freeze(
+      js.Array(
+        HOST,
+        PORT,
+        USERNAME,
+        PASSWORD,
+        ENCRYPTED_PASSWORD,
+        JDBC_DRIVER_JAR_URI,
+        JDBC_DRIVER_CLASS_NAME,
+        JDBC_ENGINE,
+        JDBC_ENGINE_VERSION,
+        CONFIG_FILES,
+        INSTANCE_ID,
+        JDBC_CONNECTION_URL,
+        JDBC_ENFORCE_SSL
+      )
     )
   }
 
@@ -1672,7 +1674,7 @@ package glue {
     val JDBC = "JDBC"
     val SFTP = "SFTP"
 
-    val values = IndexedSeq(JDBC, SFTP)
+    val values = js.Object.freeze(js.Array(JDBC, SFTP))
   }
 
   /**
@@ -1732,7 +1734,7 @@ package glue {
     val CANCELLED = "CANCELLED"
     val FAILED    = "FAILED"
 
-    val values = IndexedSeq(RUNNING, SUCCEEDED, CANCELLED, FAILED)
+    val values = js.Object.freeze(js.Array(RUNNING, SUCCEEDED, CANCELLED, FAILED))
   }
 
   /**
@@ -1865,7 +1867,7 @@ package glue {
     val RUNNING  = "RUNNING"
     val STOPPING = "STOPPING"
 
-    val values = IndexedSeq(READY, RUNNING, STOPPING)
+    val values = js.Object.freeze(js.Array(READY, RUNNING, STOPPING))
   }
 
   /**
@@ -2775,7 +2777,7 @@ package glue {
     val PRESENT = "PRESENT"
     val ABSENT  = "ABSENT"
 
-    val values = IndexedSeq(UNKNOWN, PRESENT, ABSENT)
+    val values = js.Object.freeze(js.Array(UNKNOWN, PRESENT, ABSENT))
   }
 
   /**
@@ -2895,7 +2897,7 @@ package glue {
     val DELETE_FROM_DATABASE  = "DELETE_FROM_DATABASE"
     val DEPRECATE_IN_DATABASE = "DEPRECATE_IN_DATABASE"
 
-    val values = IndexedSeq(LOG, DELETE_FROM_DATABASE, DEPRECATE_IN_DATABASE)
+    val values = js.Object.freeze(js.Array(LOG, DELETE_FROM_DATABASE, DEPRECATE_IN_DATABASE))
   }
 
   @js.native
@@ -3642,7 +3644,7 @@ package glue {
     val NOT_EXIST  = "NOT_EXIST"
     val NONE       = "NONE"
 
-    val values = IndexedSeq(MUST_EXIST, NOT_EXIST, NONE)
+    val values = js.Object.freeze(js.Array(MUST_EXIST, NOT_EXIST, NONE))
   }
 
   /**
@@ -5747,7 +5749,7 @@ package glue {
     val DISABLED  = "DISABLED"
     val `CSE-KMS` = "CSE-KMS"
 
-    val values = IndexedSeq(DISABLED, `CSE-KMS`)
+    val values = js.Object.freeze(js.Array(DISABLED, `CSE-KMS`))
   }
 
   /**
@@ -5882,7 +5884,7 @@ package glue {
     val FAILED    = "FAILED"
     val TIMEOUT   = "TIMEOUT"
 
-    val values = IndexedSeq(STARTING, RUNNING, STOPPING, STOPPED, SUCCEEDED, FAILED, TIMEOUT)
+    val values = js.Object.freeze(js.Array(STARTING, RUNNING, STOPPING, STOPPED, SUCCEEDED, FAILED, TIMEOUT))
   }
 
   /**
@@ -6002,7 +6004,7 @@ package glue {
     val PYTHON = "PYTHON"
     val SCALA  = "SCALA"
 
-    val values = IndexedSeq(PYTHON, SCALA)
+    val values = js.Object.freeze(js.Array(PYTHON, SCALA))
   }
 
   /**
@@ -6043,7 +6045,7 @@ package glue {
     val CANCELLED = "CANCELLED"
     val FAILED    = "FAILED"
 
-    val values = IndexedSeq(SUCCEEDED, CANCELLED, FAILED)
+    val values = js.Object.freeze(js.Array(SUCCEEDED, CANCELLED, FAILED))
   }
 
   @js.native
@@ -6269,13 +6271,13 @@ package glue {
     val AND = "AND"
     val ANY = "ANY"
 
-    val values = IndexedSeq(AND, ANY)
+    val values = js.Object.freeze(js.Array(AND, ANY))
   }
 
   object LogicalOperatorEnum {
     val EQUALS = "EQUALS"
 
-    val values = IndexedSeq(EQUALS)
+    val values = js.Object.freeze(js.Array(EQUALS))
   }
 
   /**
@@ -6415,7 +6417,7 @@ package glue {
     val JOB     = "JOB"
     val TRIGGER = "TRIGGER"
 
-    val values = IndexedSeq(CRAWLER, JOB, TRIGGER)
+    val values = js.Object.freeze(js.Array(CRAWLER, JOB, TRIGGER))
   }
 
   /**
@@ -6580,8 +6582,9 @@ package glue {
     val CREATE_TABLE         = "CREATE_TABLE"
     val DATA_LOCATION_ACCESS = "DATA_LOCATION_ACCESS"
 
-    val values =
-      IndexedSeq(ALL, SELECT, ALTER, DROP, DELETE, INSERT, CREATE_DATABASE, CREATE_TABLE, DATA_LOCATION_ACCESS)
+    val values = js.Object.freeze(
+      js.Array(ALL, SELECT, ALTER, DROP, DELETE, INSERT, CREATE_DATABASE, CREATE_TABLE, DATA_LOCATION_ACCESS)
+    )
   }
 
   /**
@@ -6676,7 +6679,7 @@ package glue {
     val ROLE  = "ROLE"
     val GROUP = "GROUP"
 
-    val values = IndexedSeq(USER, ROLE, GROUP)
+    val values = js.Object.freeze(js.Array(USER, ROLE, GROUP))
   }
 
   /**
@@ -6848,7 +6851,7 @@ package glue {
     val FILE    = "FILE"
     val ARCHIVE = "ARCHIVE"
 
-    val values = IndexedSeq(JAR, FILE, ARCHIVE)
+    val values = js.Object.freeze(js.Array(JAR, FILE, ARCHIVE))
   }
 
   /**
@@ -6898,7 +6901,7 @@ package glue {
     val `SSE-KMS` = "SSE-KMS"
     val `SSE-S3`  = "SSE-S3"
 
-    val values = IndexedSeq(DISABLED, `SSE-KMS`, `SSE-S3`)
+    val values = js.Object.freeze(js.Array(DISABLED, `SSE-KMS`, `SSE-S3`))
   }
 
   /**
@@ -6948,7 +6951,7 @@ package glue {
     val NOT_SCHEDULED = "NOT_SCHEDULED"
     val TRANSITIONING = "TRANSITIONING"
 
-    val values = IndexedSeq(SCHEDULED, NOT_SCHEDULED, TRANSITIONING)
+    val values = js.Object.freeze(js.Array(SCHEDULED, NOT_SCHEDULED, TRANSITIONING))
   }
 
   /**
@@ -7142,7 +7145,7 @@ package glue {
     val ASC  = "ASC"
     val DESC = "DESC"
 
-    val values = IndexedSeq(ASC, DESC)
+    val values = js.Object.freeze(js.Array(ASC, DESC))
   }
 
   @js.native
@@ -7167,7 +7170,7 @@ package glue {
     val DESCENDING = "DESCENDING"
     val ASCENDING  = "ASCENDING"
 
-    val values = IndexedSeq(DESCENDING, ASCENDING)
+    val values = js.Object.freeze(js.Array(DESCENDING, ASCENDING))
   }
 
   @js.native
@@ -7968,7 +7971,7 @@ package glue {
     val STATUS        = "STATUS"
     val STARTED       = "STARTED"
 
-    val values = IndexedSeq(TASK_RUN_TYPE, STATUS, STARTED)
+    val values = js.Object.freeze(js.Array(TASK_RUN_TYPE, STATUS, STARTED))
   }
 
   /**
@@ -8003,7 +8006,7 @@ package glue {
     val FAILED    = "FAILED"
     val TIMEOUT   = "TIMEOUT"
 
-    val values = IndexedSeq(STARTING, RUNNING, STOPPING, STOPPED, SUCCEEDED, FAILED, TIMEOUT)
+    val values = js.Object.freeze(js.Array(STARTING, RUNNING, STOPPING, STOPPED, SUCCEEDED, FAILED, TIMEOUT))
   }
 
   object TaskTypeEnum {
@@ -8013,7 +8016,8 @@ package glue {
     val EXPORT_LABELS           = "EXPORT_LABELS"
     val FIND_MATCHES            = "FIND_MATCHES"
 
-    val values = IndexedSeq(EVALUATION, LABELING_SET_GENERATION, IMPORT_LABELS, EXPORT_LABELS, FIND_MATCHES)
+    val values =
+      js.Object.freeze(js.Array(EVALUATION, LABELING_SET_GENERATION, IMPORT_LABELS, EXPORT_LABELS, FIND_MATCHES))
   }
 
   /**
@@ -8085,7 +8089,7 @@ package glue {
     val CREATED        = "CREATED"
     val LAST_MODIFIED  = "LAST_MODIFIED"
 
-    val values = IndexedSeq(NAME, TRANSFORM_TYPE, STATUS, CREATED, LAST_MODIFIED)
+    val values = js.Object.freeze(js.Array(NAME, TRANSFORM_TYPE, STATUS, CREATED, LAST_MODIFIED))
   }
 
   /**
@@ -8116,13 +8120,13 @@ package glue {
     val READY     = "READY"
     val DELETING  = "DELETING"
 
-    val values = IndexedSeq(NOT_READY, READY, DELETING)
+    val values = js.Object.freeze(js.Array(NOT_READY, READY, DELETING))
   }
 
   object TransformTypeEnum {
     val FIND_MATCHES = "FIND_MATCHES"
 
-    val values = IndexedSeq(FIND_MATCHES)
+    val values = js.Object.freeze(js.Array(FIND_MATCHES))
   }
 
   /**
@@ -8195,7 +8199,9 @@ package glue {
     val DELETING     = "DELETING"
     val UPDATING     = "UPDATING"
 
-    val values = IndexedSeq(CREATING, CREATED, ACTIVATING, ACTIVATED, DEACTIVATING, DEACTIVATED, DELETING, UPDATING)
+    val values = js.Object.freeze(
+      js.Array(CREATING, CREATED, ACTIVATING, ACTIVATED, DEACTIVATING, DEACTIVATED, DELETING, UPDATING)
+    )
   }
 
   object TriggerTypeEnum {
@@ -8203,7 +8209,7 @@ package glue {
     val CONDITIONAL = "CONDITIONAL"
     val ON_DEMAND   = "ON_DEMAND"
 
-    val values = IndexedSeq(SCHEDULED, CONDITIONAL, ON_DEMAND)
+    val values = js.Object.freeze(js.Array(SCHEDULED, CONDITIONAL, ON_DEMAND))
   }
 
   /**
@@ -8272,7 +8278,7 @@ package glue {
     val LOG                = "LOG"
     val UPDATE_IN_DATABASE = "UPDATE_IN_DATABASE"
 
-    val values = IndexedSeq(LOG, UPDATE_IN_DATABASE)
+    val values = js.Object.freeze(js.Array(LOG, UPDATE_IN_DATABASE))
   }
 
   @js.native
@@ -8992,7 +8998,7 @@ package glue {
     val `G.1X`   = "G.1X"
     val `G.2X`   = "G.2X"
 
-    val values = IndexedSeq(Standard, `G.1X`, `G.2X`)
+    val values = js.Object.freeze(js.Array(Standard, `G.1X`, `G.2X`))
   }
 
   /**
@@ -9128,7 +9134,7 @@ package glue {
     val RUNNING   = "RUNNING"
     val COMPLETED = "COMPLETED"
 
-    val values = IndexedSeq(RUNNING, COMPLETED)
+    val values = js.Object.freeze(js.Array(RUNNING, COMPLETED))
   }
 
   /**
diff --git a/services/greengrass/src/main/scala/facade/amazonaws/services/Greengrass.scala b/services/greengrass/src/main/scala/facade/amazonaws/services/Greengrass.scala
index 2e26a993d..a12c11be5 100644
--- a/services/greengrass/src/main/scala/facade/amazonaws/services/Greengrass.scala
+++ b/services/greengrass/src/main/scala/facade/amazonaws/services/Greengrass.scala
@@ -646,7 +646,7 @@ package greengrass {
     val Stopped      = "Stopped"
     val Failed       = "Failed"
 
-    val values = IndexedSeq(Initializing, Running, Completed, Stopping, Stopped, Failed)
+    val values = js.Object.freeze(js.Array(Initializing, Running, Completed, Stopping, Stopped, Failed))
   }
 
   /**
@@ -2081,7 +2081,7 @@ package greengrass {
     val ResetDeployment      = "ResetDeployment"
     val ForceResetDeployment = "ForceResetDeployment"
 
-    val values = IndexedSeq(NewDeployment, Redeployment, ResetDeployment, ForceResetDeployment)
+    val values = js.Object.freeze(js.Array(NewDeployment, Redeployment, ResetDeployment, ForceResetDeployment))
   }
 
   /**
@@ -2194,7 +2194,7 @@ package greengrass {
     val binary = "binary"
     val json   = "json"
 
-    val values = IndexedSeq(binary, json)
+    val values = js.Object.freeze(js.Array(binary, json))
   }
 
   /**
@@ -2395,7 +2395,7 @@ package greengrass {
     val GreengrassContainer = "GreengrassContainer"
     val NoContainer         = "NoContainer"
 
-    val values = IndexedSeq(GreengrassContainer, NoContainer)
+    val values = js.Object.freeze(js.Array(GreengrassContainer, NoContainer))
   }
 
   /**
@@ -4531,7 +4531,7 @@ package greengrass {
     val GreengrassSystem = "GreengrassSystem"
     val Lambda           = "Lambda"
 
-    val values = IndexedSeq(GreengrassSystem, Lambda)
+    val values = js.Object.freeze(js.Array(GreengrassSystem, Lambda))
   }
 
   /**
@@ -4559,14 +4559,14 @@ package greengrass {
     val ERROR = "ERROR"
     val FATAL = "FATAL"
 
-    val values = IndexedSeq(DEBUG, INFO, WARN, ERROR, FATAL)
+    val values = js.Object.freeze(js.Array(DEBUG, INFO, WARN, ERROR, FATAL))
   }
 
   object LoggerTypeEnum {
     val FileSystem    = "FileSystem"
     val AWSCloudWatch = "AWSCloudWatch"
 
-    val values = IndexedSeq(FileSystem, AWSCloudWatch)
+    val values = js.Object.freeze(js.Array(FileSystem, AWSCloudWatch))
   }
 
   /**
@@ -4576,7 +4576,7 @@ package greengrass {
     val ro = "ro"
     val rw = "rw"
 
-    val values = IndexedSeq(ro, rw)
+    val values = js.Object.freeze(js.Array(ro, rw))
   }
 
   /**
@@ -4798,7 +4798,7 @@ package greengrass {
     val core      = "core"
     val ota_agent = "ota_agent"
 
-    val values = IndexedSeq(core, ota_agent)
+    val values = js.Object.freeze(js.Array(core, ota_agent))
   }
 
   @js.native
@@ -4977,7 +4977,7 @@ package greengrass {
     val ERROR   = "ERROR"
     val FATAL   = "FATAL"
 
-    val values = IndexedSeq(NONE, TRACE, DEBUG, VERBOSE, INFO, WARN, ERROR, FATAL)
+    val values = js.Object.freeze(js.Array(NONE, TRACE, DEBUG, VERBOSE, INFO, WARN, ERROR, FATAL))
   }
 
   /**
@@ -5333,7 +5333,7 @@ package greengrass {
     val aarch64 = "aarch64"
     val openwrt = "openwrt"
 
-    val values = IndexedSeq(armv7l, x86_64, aarch64, openwrt)
+    val values = js.Object.freeze(js.Array(armv7l, x86_64, aarch64, openwrt))
   }
 
   /**
@@ -5344,7 +5344,7 @@ package greengrass {
     val raspbian     = "raspbian"
     val amazon_linux = "amazon_linux"
 
-    val values = IndexedSeq(ubuntu, raspbian, amazon_linux)
+    val values = js.Object.freeze(js.Array(ubuntu, raspbian, amazon_linux))
   }
 
   /**
diff --git a/services/groundstation/src/main/scala/facade/amazonaws/services/GroundStation.scala b/services/groundstation/src/main/scala/facade/amazonaws/services/GroundStation.scala
index fd5ac1b5e..d2bc5f493 100644
--- a/services/groundstation/src/main/scala/facade/amazonaws/services/GroundStation.scala
+++ b/services/groundstation/src/main/scala/facade/amazonaws/services/GroundStation.scala
@@ -146,7 +146,7 @@ package groundstation {
     val DEGREE_ANGLE = "DEGREE_ANGLE"
     val RADIAN       = "RADIAN"
 
-    val values = IndexedSeq(DEGREE_ANGLE, RADIAN)
+    val values = js.Object.freeze(js.Array(DEGREE_ANGLE, RADIAN))
   }
 
   /**
@@ -224,7 +224,7 @@ package groundstation {
     val MHz = "MHz"
     val kHz = "kHz"
 
-    val values = IndexedSeq(GHz, MHz, kHz)
+    val values = js.Object.freeze(js.Array(GHz, MHz, kHz))
   }
 
   /**
@@ -255,13 +255,15 @@ package groundstation {
     val tracking                        = "tracking"
     val `uplink-echo`                   = "uplink-echo"
 
-    val values = IndexedSeq(
-      `antenna-downlink`,
-      `antenna-downlink-demod-decode`,
-      `antenna-uplink`,
-      `dataflow-endpoint`,
-      tracking,
-      `uplink-echo`
+    val values = js.Object.freeze(
+      js.Array(
+        `antenna-downlink`,
+        `antenna-downlink-demod-decode`,
+        `antenna-uplink`,
+        `dataflow-endpoint`,
+        tracking,
+        `uplink-echo`
+      )
     )
   }
 
@@ -434,18 +436,20 @@ package groundstation {
     val SCHEDULED          = "SCHEDULED"
     val SCHEDULING         = "SCHEDULING"
 
-    val values = IndexedSeq(
-      AVAILABLE,
-      AWS_CANCELLED,
-      CANCELLED,
-      COMPLETED,
-      FAILED,
-      FAILED_TO_SCHEDULE,
-      PASS,
-      POSTPASS,
-      PREPASS,
-      SCHEDULED,
-      SCHEDULING
+    val values = js.Object.freeze(
+      js.Array(
+        AVAILABLE,
+        AWS_CANCELLED,
+        CANCELLED,
+        COMPLETED,
+        FAILED,
+        FAILED_TO_SCHEDULE,
+        PASS,
+        POSTPASS,
+        PREPASS,
+        SCHEDULED,
+        SCHEDULING
+      )
     )
   }
 
@@ -545,7 +549,7 @@ package groundstation {
     val REMOVED   = "REMOVED"
     val REQUIRED  = "REQUIRED"
 
-    val values = IndexedSeq(PREFERRED, REMOVED, REQUIRED)
+    val values = js.Object.freeze(js.Array(PREFERRED, REMOVED, REQUIRED))
   }
 
   /**
@@ -831,7 +835,7 @@ package groundstation {
   object EirpUnitsEnum {
     val dBW = "dBW"
 
-    val values = IndexedSeq(dBW)
+    val values = js.Object.freeze(js.Array(dBW))
   }
 
   /**
@@ -885,7 +889,7 @@ package groundstation {
     val deleting = "deleting"
     val failed   = "failed"
 
-    val values = IndexedSeq(created, creating, deleted, deleting, failed)
+    val values = js.Object.freeze(js.Array(created, creating, deleted, deleting, failed))
   }
 
   /**
@@ -939,7 +943,7 @@ package groundstation {
     val MHz = "MHz"
     val kHz = "kHz"
 
-    val values = IndexedSeq(GHz, MHz, kHz)
+    val values = js.Object.freeze(js.Array(GHz, MHz, kHz))
   }
 
   /**
@@ -1610,7 +1614,7 @@ package groundstation {
     val NONE       = "NONE"
     val RIGHT_HAND = "RIGHT_HAND"
 
-    val values = IndexedSeq(LEFT_HAND, NONE, RIGHT_HAND)
+    val values = js.Object.freeze(js.Array(LEFT_HAND, NONE, RIGHT_HAND))
   }
 
   /**
diff --git a/services/guardduty/src/main/scala/facade/amazonaws/services/GuardDuty.scala b/services/guardduty/src/main/scala/facade/amazonaws/services/GuardDuty.scala
index c0256f6af..29d8ba5b7 100644
--- a/services/guardduty/src/main/scala/facade/amazonaws/services/GuardDuty.scala
+++ b/services/guardduty/src/main/scala/facade/amazonaws/services/GuardDuty.scala
@@ -986,7 +986,7 @@ package guardduty {
     val ENABLED  = "ENABLED"
     val DISABLED = "DISABLED"
 
-    val values = IndexedSeq(ENABLED, DISABLED)
+    val values = js.Object.freeze(js.Array(ENABLED, DISABLED))
   }
 
   @js.native
@@ -1113,14 +1113,14 @@ package guardduty {
     val USEFUL     = "USEFUL"
     val NOT_USEFUL = "NOT_USEFUL"
 
-    val values = IndexedSeq(USEFUL, NOT_USEFUL)
+    val values = js.Object.freeze(js.Array(USEFUL, NOT_USEFUL))
   }
 
   object FilterActionEnum {
     val NOOP    = "NOOP"
     val ARCHIVE = "ARCHIVE"
 
-    val values = IndexedSeq(NOOP, ARCHIVE)
+    val values = js.Object.freeze(js.Array(NOOP, ARCHIVE))
   }
 
   /**
@@ -1208,13 +1208,13 @@ package guardduty {
     val ONE_HOUR        = "ONE_HOUR"
     val SIX_HOURS       = "SIX_HOURS"
 
-    val values = IndexedSeq(FIFTEEN_MINUTES, ONE_HOUR, SIX_HOURS)
+    val values = js.Object.freeze(js.Array(FIFTEEN_MINUTES, ONE_HOUR, SIX_HOURS))
   }
 
   object FindingStatisticTypeEnum {
     val COUNT_BY_SEVERITY = "COUNT_BY_SEVERITY"
 
-    val values = IndexedSeq(COUNT_BY_SEVERITY)
+    val values = js.Object.freeze(js.Array(COUNT_BY_SEVERITY))
   }
 
   /**
@@ -1786,7 +1786,7 @@ package guardduty {
     val PROOF_POINT = "PROOF_POINT"
     val FIRE_EYE    = "FIRE_EYE"
 
-    val values = IndexedSeq(TXT, STIX, OTX_CSV, ALIEN_VAULT, PROOF_POINT, FIRE_EYE)
+    val values = js.Object.freeze(js.Array(TXT, STIX, OTX_CSV, ALIEN_VAULT, PROOF_POINT, FIRE_EYE))
   }
 
   object IpSetStatusEnum {
@@ -1798,7 +1798,7 @@ package guardduty {
     val DELETE_PENDING = "DELETE_PENDING"
     val DELETED        = "DELETED"
 
-    val values = IndexedSeq(INACTIVE, ACTIVATING, ACTIVE, DEACTIVATING, ERROR, DELETE_PENDING, DELETED)
+    val values = js.Object.freeze(js.Array(INACTIVE, ACTIVATING, ACTIVE, DEACTIVATING, ERROR, DELETE_PENDING, DELETED))
   }
 
   @js.native
@@ -2297,7 +2297,7 @@ package guardduty {
     val ASC  = "ASC"
     val DESC = "DESC"
 
-    val values = IndexedSeq(ASC, DESC)
+    val values = js.Object.freeze(js.Array(ASC, DESC))
   }
 
   /**
@@ -2708,7 +2708,7 @@ package guardduty {
     val PROOF_POINT = "PROOF_POINT"
     val FIRE_EYE    = "FIRE_EYE"
 
-    val values = IndexedSeq(TXT, STIX, OTX_CSV, ALIEN_VAULT, PROOF_POINT, FIRE_EYE)
+    val values = js.Object.freeze(js.Array(TXT, STIX, OTX_CSV, ALIEN_VAULT, PROOF_POINT, FIRE_EYE))
   }
 
   object ThreatIntelSetStatusEnum {
@@ -2720,7 +2720,7 @@ package guardduty {
     val DELETE_PENDING = "DELETE_PENDING"
     val DELETED        = "DELETED"
 
-    val values = IndexedSeq(INACTIVE, ACTIVATING, ACTIVE, DEACTIVATING, ERROR, DELETE_PENDING, DELETED)
+    val values = js.Object.freeze(js.Array(INACTIVE, ACTIVATING, ACTIVE, DEACTIVATING, ERROR, DELETE_PENDING, DELETED))
   }
 
   /**
diff --git a/services/health/src/main/scala/facade/amazonaws/services/Health.scala b/services/health/src/main/scala/facade/amazonaws/services/Health.scala
index cc21abc7f..a5d730dbd 100644
--- a/services/health/src/main/scala/facade/amazonaws/services/Health.scala
+++ b/services/health/src/main/scala/facade/amazonaws/services/Health.scala
@@ -689,13 +689,13 @@ package health {
     val UNIMPAIRED = "UNIMPAIRED"
     val UNKNOWN    = "UNKNOWN"
 
-    val values = IndexedSeq(IMPAIRED, UNIMPAIRED, UNKNOWN)
+    val values = js.Object.freeze(js.Array(IMPAIRED, UNIMPAIRED, UNKNOWN))
   }
 
   object eventAggregateFieldEnum {
     val eventTypeCategory = "eventTypeCategory"
 
-    val values = IndexedSeq(eventTypeCategory)
+    val values = js.Object.freeze(js.Array(eventTypeCategory))
   }
 
   object eventStatusCodeEnum {
@@ -703,7 +703,7 @@ package health {
     val closed   = "closed"
     val upcoming = "upcoming"
 
-    val values = IndexedSeq(open, closed, upcoming)
+    val values = js.Object.freeze(js.Array(open, closed, upcoming))
   }
 
   object eventTypeCategoryEnum {
@@ -712,6 +712,6 @@ package health {
     val scheduledChange     = "scheduledChange"
     val investigation       = "investigation"
 
-    val values = IndexedSeq(issue, accountNotification, scheduledChange, investigation)
+    val values = js.Object.freeze(js.Array(issue, accountNotification, scheduledChange, investigation))
   }
 }
diff --git a/services/iam/src/main/scala/facade/amazonaws/services/IAM.scala b/services/iam/src/main/scala/facade/amazonaws/services/IAM.scala
index b5201a391..34d81ca69 100644
--- a/services/iam/src/main/scala/facade/amazonaws/services/IAM.scala
+++ b/services/iam/src/main/scala/facade/amazonaws/services/IAM.scala
@@ -1007,19 +1007,21 @@ package iam {
     val date        = "date"
     val dateList    = "dateList"
 
-    val values = IndexedSeq(
-      string,
-      stringList,
-      numeric,
-      numericList,
-      boolean,
-      booleanList,
-      ip,
-      ipList,
-      binary,
-      binaryList,
-      date,
-      dateList
+    val values = js.Object.freeze(
+      js.Array(
+        string,
+        stringList,
+        numeric,
+        numericList,
+        boolean,
+        booleanList,
+        ip,
+        ipList,
+        binary,
+        binaryList,
+        date,
+        dateList
+      )
     )
   }
 
@@ -2037,7 +2039,7 @@ package iam {
     val FAILED      = "FAILED"
     val NOT_STARTED = "NOT_STARTED"
 
-    val values = IndexedSeq(SUCCEEDED, IN_PROGRESS, FAILED, NOT_STARTED)
+    val values = js.Object.freeze(js.Array(SUCCEEDED, IN_PROGRESS, FAILED, NOT_STARTED))
   }
 
   @js.native
@@ -2190,7 +2192,7 @@ package iam {
     val LocalManagedPolicy = "LocalManagedPolicy"
     val AWSManagedPolicy   = "AWSManagedPolicy"
 
-    val values = IndexedSeq(User, Role, Group, LocalManagedPolicy, AWSManagedPolicy)
+    val values = js.Object.freeze(js.Array(User, Role, Group, LocalManagedPolicy, AWSManagedPolicy))
   }
 
   /**
@@ -4981,7 +4983,7 @@ package iam {
   object PermissionsBoundaryAttachmentTypeEnum {
     val PermissionsBoundaryPolicy = "PermissionsBoundaryPolicy"
 
-    val values = IndexedSeq(PermissionsBoundaryPolicy)
+    val values = js.Object.freeze(js.Array(PermissionsBoundaryPolicy))
   }
 
   /**
@@ -5063,7 +5065,7 @@ package iam {
     val explicitDeny = "explicitDeny"
     val implicitDeny = "implicitDeny"
 
-    val values = IndexedSeq(allowed, explicitDeny, implicitDeny)
+    val values = js.Object.freeze(js.Array(allowed, explicitDeny, implicitDeny))
   }
 
   /**
@@ -5154,7 +5156,7 @@ package iam {
     val resource       = "resource"
     val none           = "none"
 
-    val values = IndexedSeq(user, group, role, `aws-managed`, `user-managed`, resource, none)
+    val values = js.Object.freeze(js.Array(user, group, role, `aws-managed`, `user-managed`, resource, none))
   }
 
   /**
@@ -5165,7 +5167,7 @@ package iam {
     val PermissionsPolicy   = "PermissionsPolicy"
     val PermissionsBoundary = "PermissionsBoundary"
 
-    val values = IndexedSeq(PermissionsPolicy, PermissionsBoundary)
+    val values = js.Object.freeze(js.Array(PermissionsPolicy, PermissionsBoundary))
   }
 
   /**
@@ -5414,7 +5416,7 @@ package iam {
   object ReportFormatTypeEnum {
     val `text/csv` = "text/csv"
 
-    val values = IndexedSeq(`text/csv`)
+    val values = js.Object.freeze(js.Array(`text/csv`))
   }
 
   object ReportStateTypeEnum {
@@ -5422,7 +5424,7 @@ package iam {
     val INPROGRESS = "INPROGRESS"
     val COMPLETE   = "COMPLETE"
 
-    val values = IndexedSeq(STARTED, INPROGRESS, COMPLETE)
+    val values = js.Object.freeze(js.Array(STARTED, INPROGRESS, COMPLETE))
   }
 
   @js.native
@@ -6836,21 +6838,21 @@ package iam {
     val Unassigned = "Unassigned"
     val Any        = "Any"
 
-    val values = IndexedSeq(Assigned, Unassigned, Any)
+    val values = js.Object.freeze(js.Array(Assigned, Unassigned, Any))
   }
 
   object encodingTypeEnum {
     val SSH = "SSH"
     val PEM = "PEM"
 
-    val values = IndexedSeq(SSH, PEM)
+    val values = js.Object.freeze(js.Array(SSH, PEM))
   }
 
   object globalEndpointTokenVersionEnum {
     val v1Token = "v1Token"
     val v2Token = "v2Token"
 
-    val values = IndexedSeq(v1Token, v2Token)
+    val values = js.Object.freeze(js.Array(v1Token, v2Token))
   }
 
   object jobStatusTypeEnum {
@@ -6858,7 +6860,7 @@ package iam {
     val COMPLETED   = "COMPLETED"
     val FAILED      = "FAILED"
 
-    val values = IndexedSeq(IN_PROGRESS, COMPLETED, FAILED)
+    val values = js.Object.freeze(js.Array(IN_PROGRESS, COMPLETED, FAILED))
   }
 
   object policyOwnerEntityTypeEnum {
@@ -6866,7 +6868,7 @@ package iam {
     val ROLE  = "ROLE"
     val GROUP = "GROUP"
 
-    val values = IndexedSeq(USER, ROLE, GROUP)
+    val values = js.Object.freeze(js.Array(USER, ROLE, GROUP))
   }
 
   object policyScopeTypeEnum {
@@ -6874,14 +6876,14 @@ package iam {
     val AWS   = "AWS"
     val Local = "Local"
 
-    val values = IndexedSeq(All, AWS, Local)
+    val values = js.Object.freeze(js.Array(All, AWS, Local))
   }
 
   object policyTypeEnum {
     val INLINE  = "INLINE"
     val MANAGED = "MANAGED"
 
-    val values = IndexedSeq(INLINE, MANAGED)
+    val values = js.Object.freeze(js.Array(INLINE, MANAGED))
   }
 
   object sortKeyTypeEnum {
@@ -6890,11 +6892,13 @@ package iam {
     val LAST_AUTHENTICATED_TIME_ASCENDING  = "LAST_AUTHENTICATED_TIME_ASCENDING"
     val LAST_AUTHENTICATED_TIME_DESCENDING = "LAST_AUTHENTICATED_TIME_DESCENDING"
 
-    val values = IndexedSeq(
-      SERVICE_NAMESPACE_ASCENDING,
-      SERVICE_NAMESPACE_DESCENDING,
-      LAST_AUTHENTICATED_TIME_ASCENDING,
-      LAST_AUTHENTICATED_TIME_DESCENDING
+    val values = js.Object.freeze(
+      js.Array(
+        SERVICE_NAMESPACE_ASCENDING,
+        SERVICE_NAMESPACE_DESCENDING,
+        LAST_AUTHENTICATED_TIME_ASCENDING,
+        LAST_AUTHENTICATED_TIME_DESCENDING
+      )
     )
   }
 
@@ -6902,7 +6906,7 @@ package iam {
     val Active   = "Active"
     val Inactive = "Inactive"
 
-    val values = IndexedSeq(Active, Inactive)
+    val values = js.Object.freeze(js.Array(Active, Inactive))
   }
 
   object summaryKeyTypeEnum {
@@ -6933,33 +6937,35 @@ package iam {
     val VersionsPerPolicyQuota            = "VersionsPerPolicyQuota"
     val GlobalEndpointTokenVersion        = "GlobalEndpointTokenVersion"
 
-    val values = IndexedSeq(
-      Users,
-      UsersQuota,
-      Groups,
-      GroupsQuota,
-      ServerCertificates,
-      ServerCertificatesQuota,
-      UserPolicySizeQuota,
-      GroupPolicySizeQuota,
-      GroupsPerUserQuota,
-      SigningCertificatesPerUserQuota,
-      AccessKeysPerUserQuota,
-      MFADevices,
-      MFADevicesInUse,
-      AccountMFAEnabled,
-      AccountAccessKeysPresent,
-      AccountSigningCertificatesPresent,
-      AttachedPoliciesPerGroupQuota,
-      AttachedPoliciesPerRoleQuota,
-      AttachedPoliciesPerUserQuota,
-      Policies,
-      PoliciesQuota,
-      PolicySizeQuota,
-      PolicyVersionsInUse,
-      PolicyVersionsInUseQuota,
-      VersionsPerPolicyQuota,
-      GlobalEndpointTokenVersion
+    val values = js.Object.freeze(
+      js.Array(
+        Users,
+        UsersQuota,
+        Groups,
+        GroupsQuota,
+        ServerCertificates,
+        ServerCertificatesQuota,
+        UserPolicySizeQuota,
+        GroupPolicySizeQuota,
+        GroupsPerUserQuota,
+        SigningCertificatesPerUserQuota,
+        AccessKeysPerUserQuota,
+        MFADevices,
+        MFADevicesInUse,
+        AccountMFAEnabled,
+        AccountAccessKeysPresent,
+        AccountSigningCertificatesPresent,
+        AttachedPoliciesPerGroupQuota,
+        AttachedPoliciesPerRoleQuota,
+        AttachedPoliciesPerUserQuota,
+        Policies,
+        PoliciesQuota,
+        PolicySizeQuota,
+        PolicyVersionsInUse,
+        PolicyVersionsInUseQuota,
+        VersionsPerPolicyQuota,
+        GlobalEndpointTokenVersion
+      )
     )
   }
 }
diff --git a/services/importexport/src/main/scala/facade/amazonaws/services/ImportExport.scala b/services/importexport/src/main/scala/facade/amazonaws/services/ImportExport.scala
index 183d2ae2b..29a8d1be9 100644
--- a/services/importexport/src/main/scala/facade/amazonaws/services/ImportExport.scala
+++ b/services/importexport/src/main/scala/facade/amazonaws/services/ImportExport.scala
@@ -488,7 +488,7 @@ package importexport {
     val Import = "Import"
     val Export = "Export"
 
-    val values = IndexedSeq(Import, Export)
+    val values = js.Object.freeze(js.Array(Import, Export))
   }
 
   /**
diff --git a/services/inspector/src/main/scala/facade/amazonaws/services/Inspector.scala b/services/inspector/src/main/scala/facade/amazonaws/services/Inspector.scala
index 51f45bca0..c87090487 100644
--- a/services/inspector/src/main/scala/facade/amazonaws/services/Inspector.scala
+++ b/services/inspector/src/main/scala/facade/amazonaws/services/Inspector.scala
@@ -316,7 +316,7 @@ package inspector {
     val UNHEALTHY = "UNHEALTHY"
     val UNKNOWN   = "UNKNOWN"
 
-    val values = IndexedSeq(HEALTHY, UNHEALTHY, UNKNOWN)
+    val values = js.Object.freeze(js.Array(HEALTHY, UNHEALTHY, UNKNOWN))
   }
 
   object AgentHealthCodeEnum {
@@ -327,7 +327,7 @@ package inspector {
     val THROTTLED = "THROTTLED"
     val UNKNOWN   = "UNKNOWN"
 
-    val values = IndexedSeq(IDLE, RUNNING, SHUTDOWN, UNHEALTHY, THROTTLED, UNKNOWN)
+    val values = js.Object.freeze(js.Array(IDLE, RUNNING, SHUTDOWN, UNHEALTHY, THROTTLED, UNKNOWN))
   }
 
   /**
@@ -549,7 +549,7 @@ package inspector {
     val ACCESS_DENIED        = "ACCESS_DENIED"
     val INTERNAL_ERROR       = "INTERNAL_ERROR"
 
-    val values = IndexedSeq(SUCCESS, TOPIC_DOES_NOT_EXIST, ACCESS_DENIED, INTERNAL_ERROR)
+    val values = js.Object.freeze(js.Array(SUCCESS, TOPIC_DOES_NOT_EXIST, ACCESS_DENIED, INTERNAL_ERROR))
   }
 
   object AssessmentRunStateEnum {
@@ -567,20 +567,22 @@ package inspector {
     val COMPLETED_WITH_ERRORS             = "COMPLETED_WITH_ERRORS"
     val CANCELED                          = "CANCELED"
 
-    val values = IndexedSeq(
-      CREATED,
-      START_DATA_COLLECTION_PENDING,
-      START_DATA_COLLECTION_IN_PROGRESS,
-      COLLECTING_DATA,
-      STOP_DATA_COLLECTION_PENDING,
-      DATA_COLLECTED,
-      START_EVALUATING_RULES_PENDING,
-      EVALUATING_RULES,
-      FAILED,
-      ERROR,
-      COMPLETED,
-      COMPLETED_WITH_ERRORS,
-      CANCELED
+    val values = js.Object.freeze(
+      js.Array(
+        CREATED,
+        START_DATA_COLLECTION_PENDING,
+        START_DATA_COLLECTION_IN_PROGRESS,
+        COLLECTING_DATA,
+        STOP_DATA_COLLECTION_PENDING,
+        DATA_COLLECTED,
+        START_EVALUATING_RULES_PENDING,
+        EVALUATING_RULES,
+        FAILED,
+        ERROR,
+        COMPLETED,
+        COMPLETED_WITH_ERRORS,
+        CANCELED
+      )
     )
   }
 
@@ -769,7 +771,7 @@ package inspector {
   object AssetTypeEnum {
     val `ec2-instance` = "ec2-instance"
 
-    val values = IndexedSeq(`ec2-instance`)
+    val values = js.Object.freeze(js.Array(`ec2-instance`))
   }
 
   /**
@@ -1430,8 +1432,9 @@ package inspector {
     val LIMIT_EXCEEDED      = "LIMIT_EXCEEDED"
     val INTERNAL_ERROR      = "INTERNAL_ERROR"
 
-    val values =
-      IndexedSeq(INVALID_ARN, DUPLICATE_ARN, ITEM_DOES_NOT_EXIST, ACCESS_DENIED, LIMIT_EXCEEDED, INTERNAL_ERROR)
+    val values = js.Object.freeze(
+      js.Array(INVALID_ARN, DUPLICATE_ARN, ITEM_DOES_NOT_EXIST, ACCESS_DENIED, LIMIT_EXCEEDED, INTERNAL_ERROR)
+    )
   }
 
   /**
@@ -1680,12 +1683,8 @@ package inspector {
     val FINDING_REPORTED             = "FINDING_REPORTED"
     val OTHER                        = "OTHER"
 
-    val values = IndexedSeq(
-      ASSESSMENT_RUN_STARTED,
-      ASSESSMENT_RUN_COMPLETED,
-      ASSESSMENT_RUN_STATE_CHANGED,
-      FINDING_REPORTED,
-      OTHER
+    val values = js.Object.freeze(
+      js.Array(ASSESSMENT_RUN_STARTED, ASSESSMENT_RUN_COMPLETED, ASSESSMENT_RUN_STATE_CHANGED, FINDING_REPORTED, OTHER)
     )
   }
 
@@ -2093,7 +2092,7 @@ package inspector {
   object LocaleEnum {
     val EN_US = "EN_US"
 
-    val values = IndexedSeq(EN_US)
+    val values = js.Object.freeze(js.Array(EN_US))
   }
 
   /**
@@ -2188,7 +2187,7 @@ package inspector {
     val WORK_IN_PROGRESS = "WORK_IN_PROGRESS"
     val COMPLETED        = "COMPLETED"
 
-    val values = IndexedSeq(WORK_IN_PROGRESS, COMPLETED)
+    val values = js.Object.freeze(js.Array(WORK_IN_PROGRESS, COMPLETED))
   }
 
   /**
@@ -2270,7 +2269,7 @@ package inspector {
     val HTML = "HTML"
     val PDF  = "PDF"
 
-    val values = IndexedSeq(HTML, PDF)
+    val values = js.Object.freeze(js.Array(HTML, PDF))
   }
 
   object ReportStatusEnum {
@@ -2278,14 +2277,14 @@ package inspector {
     val FAILED           = "FAILED"
     val COMPLETED        = "COMPLETED"
 
-    val values = IndexedSeq(WORK_IN_PROGRESS, FAILED, COMPLETED)
+    val values = js.Object.freeze(js.Array(WORK_IN_PROGRESS, FAILED, COMPLETED))
   }
 
   object ReportTypeEnum {
     val FINDING = "FINDING"
     val FULL    = "FULL"
 
-    val values = IndexedSeq(FINDING, FULL)
+    val values = js.Object.freeze(js.Array(FINDING, FULL))
   }
 
   /**
@@ -2394,7 +2393,7 @@ package inspector {
     val INSTANCE_ID       = "INSTANCE_ID"
     val RULES_PACKAGE_ARN = "RULES_PACKAGE_ARN"
 
-    val values = IndexedSeq(INSTANCE_ID, RULES_PACKAGE_ARN)
+    val values = js.Object.freeze(js.Array(INSTANCE_ID, RULES_PACKAGE_ARN))
   }
 
   /**
@@ -2445,7 +2444,7 @@ package inspector {
     val Informational = "Informational"
     val Undefined     = "Undefined"
 
-    val values = IndexedSeq(Low, Medium, High, Informational, Undefined)
+    val values = js.Object.freeze(js.Array(Low, Medium, High, Informational, Undefined))
   }
 
   @js.native
@@ -2489,7 +2488,7 @@ package inspector {
     val START_EVALUATION = "START_EVALUATION"
     val SKIP_EVALUATION  = "SKIP_EVALUATION"
 
-    val values = IndexedSeq(START_EVALUATION, SKIP_EVALUATION)
+    val values = js.Object.freeze(js.Array(START_EVALUATION, SKIP_EVALUATION))
   }
 
   @js.native
diff --git a/services/iot/src/main/scala/facade/amazonaws/services/Iot.scala b/services/iot/src/main/scala/facade/amazonaws/services/Iot.scala
index 4052a3d7f..6ef8f8dd0 100644
--- a/services/iot/src/main/scala/facade/amazonaws/services/Iot.scala
+++ b/services/iot/src/main/scala/facade/amazonaws/services/Iot.scala
@@ -1060,7 +1060,7 @@ package iot {
   object AbortActionEnum {
     val CANCEL = "CANCEL"
 
-    val values = IndexedSeq(CANCEL)
+    val values = js.Object.freeze(js.Array(CANCEL))
   }
 
   /**
@@ -1204,7 +1204,7 @@ package iot {
     val RECEIVE   = "RECEIVE"
     val CONNECT   = "CONNECT"
 
-    val values = IndexedSeq(PUBLISH, SUBSCRIBE, RECEIVE, CONNECT)
+    val values = js.Object.freeze(js.Array(PUBLISH, SUBSCRIBE, RECEIVE, CONNECT))
   }
 
   /**
@@ -1370,7 +1370,7 @@ package iot {
   object AlertTargetTypeEnum {
     val SNS = "SNS"
 
-    val values = IndexedSeq(SNS)
+    val values = js.Object.freeze(js.Array(SNS))
   }
 
   /**
@@ -1628,13 +1628,8 @@ package iot {
     val COMPLETED_NON_COMPLIANT     = "COMPLETED_NON_COMPLIANT"
     val FAILED                      = "FAILED"
 
-    val values = IndexedSeq(
-      IN_PROGRESS,
-      WAITING_FOR_DATA_COLLECTION,
-      CANCELED,
-      COMPLETED_COMPLIANT,
-      COMPLETED_NON_COMPLIANT,
-      FAILED
+    val values = js.Object.freeze(
+      js.Array(IN_PROGRESS, WAITING_FOR_DATA_COLLECTION, CANCELED, COMPLETED_COMPLIANT, COMPLETED_NON_COMPLIANT, FAILED)
     )
   }
 
@@ -1689,7 +1684,7 @@ package iot {
     val MEDIUM   = "MEDIUM"
     val LOW      = "LOW"
 
-    val values = IndexedSeq(CRITICAL, HIGH, MEDIUM, LOW)
+    val values = js.Object.freeze(js.Array(CRITICAL, HIGH, MEDIUM, LOW))
   }
 
   object AuditFrequencyEnum {
@@ -1698,7 +1693,7 @@ package iot {
     val BIWEEKLY = "BIWEEKLY"
     val MONTHLY  = "MONTHLY"
 
-    val values = IndexedSeq(DAILY, WEEKLY, BIWEEKLY, MONTHLY)
+    val values = js.Object.freeze(js.Array(DAILY, WEEKLY, BIWEEKLY, MONTHLY))
   }
 
   /**
@@ -1751,7 +1746,7 @@ package iot {
     val SKIPPED     = "SKIPPED"
     val PENDING     = "PENDING"
 
-    val values = IndexedSeq(IN_PROGRESS, COMPLETED, FAILED, CANCELED, SKIPPED, PENDING)
+    val values = js.Object.freeze(js.Array(IN_PROGRESS, COMPLETED, FAILED, CANCELED, SKIPPED, PENDING))
   }
 
   /**
@@ -1784,7 +1779,7 @@ package iot {
     val FAILED      = "FAILED"
     val CANCELED    = "CANCELED"
 
-    val values = IndexedSeq(IN_PROGRESS, COMPLETED, FAILED, CANCELED)
+    val values = js.Object.freeze(js.Array(IN_PROGRESS, COMPLETED, FAILED, CANCELED))
   }
 
   /**
@@ -1840,7 +1835,7 @@ package iot {
   object AuditNotificationTypeEnum {
     val SNS = "SNS"
 
-    val values = IndexedSeq(SNS)
+    val values = js.Object.freeze(js.Array(SNS))
   }
 
   /**
@@ -1873,14 +1868,14 @@ package iot {
     val FAILED      = "FAILED"
     val CANCELED    = "CANCELED"
 
-    val values = IndexedSeq(IN_PROGRESS, COMPLETED, FAILED, CANCELED)
+    val values = js.Object.freeze(js.Array(IN_PROGRESS, COMPLETED, FAILED, CANCELED))
   }
 
   object AuditTaskTypeEnum {
     val ON_DEMAND_AUDIT_TASK = "ON_DEMAND_AUDIT_TASK"
     val SCHEDULED_AUDIT_TASK = "SCHEDULED_AUDIT_TASK"
 
-    val values = IndexedSeq(ON_DEMAND_AUDIT_TASK, SCHEDULED_AUDIT_TASK)
+    val values = js.Object.freeze(js.Array(ON_DEMAND_AUDIT_TASK, SCHEDULED_AUDIT_TASK))
   }
 
   object AuthDecisionEnum {
@@ -1888,7 +1883,7 @@ package iot {
     val EXPLICIT_DENY = "EXPLICIT_DENY"
     val IMPLICIT_DENY = "IMPLICIT_DENY"
 
-    val values = IndexedSeq(ALLOWED, EXPLICIT_DENY, IMPLICIT_DENY)
+    val values = js.Object.freeze(js.Array(ALLOWED, EXPLICIT_DENY, IMPLICIT_DENY))
   }
 
   /**
@@ -1985,7 +1980,7 @@ package iot {
     val ACTIVE   = "ACTIVE"
     val INACTIVE = "INACTIVE"
 
-    val values = IndexedSeq(ACTIVE, INACTIVE)
+    val values = js.Object.freeze(js.Array(ACTIVE, INACTIVE))
   }
 
   /**
@@ -2013,7 +2008,7 @@ package iot {
     val ENABLE  = "ENABLE"
     val DISABLE = "DISABLE"
 
-    val values = IndexedSeq(ENABLE, DISABLE)
+    val values = js.Object.freeze(js.Array(ENABLE, DISABLE))
   }
 
   /**
@@ -2212,13 +2207,13 @@ package iot {
     val ACTIVE   = "ACTIVE"
     val INACTIVE = "INACTIVE"
 
-    val values = IndexedSeq(ACTIVE, INACTIVE)
+    val values = js.Object.freeze(js.Array(ACTIVE, INACTIVE))
   }
 
   object CACertificateUpdateActionEnum {
     val DEACTIVATE = "DEACTIVATE"
 
-    val values = IndexedSeq(DEACTIVATE)
+    val values = js.Object.freeze(js.Array(DEACTIVATE))
   }
 
   @js.native
@@ -2385,15 +2380,17 @@ package iot {
     val `bucket-owner-full-control` = "bucket-owner-full-control"
     val `log-delivery-write`        = "log-delivery-write"
 
-    val values = IndexedSeq(
-      `private`,
-      `public-read`,
-      `public-read-write`,
-      `aws-exec-read`,
-      `authenticated-read`,
-      `bucket-owner-read`,
-      `bucket-owner-full-control`,
-      `log-delivery-write`
+    val values = js.Object.freeze(
+      js.Array(
+        `private`,
+        `public-read`,
+        `public-read-write`,
+        `aws-exec-read`,
+        `authenticated-read`,
+        `bucket-owner-read`,
+        `bucket-owner-full-control`,
+        `log-delivery-write`
+      )
     )
   }
 
@@ -2486,7 +2483,8 @@ package iot {
     val REGISTER_INACTIVE  = "REGISTER_INACTIVE"
     val PENDING_ACTIVATION = "PENDING_ACTIVATION"
 
-    val values = IndexedSeq(ACTIVE, INACTIVE, REVOKED, PENDING_TRANSFER, REGISTER_INACTIVE, PENDING_ACTIVATION)
+    val values =
+      js.Object.freeze(js.Array(ACTIVE, INACTIVE, REVOKED, PENDING_TRANSFER, REGISTER_INACTIVE, PENDING_ACTIVATION))
   }
 
   /**
@@ -2671,15 +2669,17 @@ package iot {
     val `in-port-set`         = "in-port-set"
     val `not-in-port-set`     = "not-in-port-set"
 
-    val values = IndexedSeq(
-      `less-than`,
-      `less-than-equals`,
-      `greater-than`,
-      `greater-than-equals`,
-      `in-cidr-set`,
-      `not-in-cidr-set`,
-      `in-port-set`,
-      `not-in-port-set`
+    val values = js.Object.freeze(
+      js.Array(
+        `less-than`,
+        `less-than-equals`,
+        `greater-than`,
+        `greater-than-equals`,
+        `in-cidr-set`,
+        `not-in-cidr-set`,
+        `in-port-set`,
+        `not-in-port-set`
+      )
     )
   }
 
@@ -3634,7 +3634,7 @@ package iot {
     val FRI = "FRI"
     val SAT = "SAT"
 
-    val values = IndexedSeq(SUN, MON, TUE, WED, THU, FRI, SAT)
+    val values = js.Object.freeze(js.Array(SUN, MON, TUE, WED, THU, FRI, SAT))
   }
 
   @js.native
@@ -5437,7 +5437,7 @@ package iot {
   object DeviceCertificateUpdateActionEnum {
     val DEACTIVATE = "DEACTIVATE"
 
-    val values = IndexedSeq(DEACTIVATE)
+    val values = js.Object.freeze(js.Array(DEACTIVATE))
   }
 
   /**
@@ -5465,7 +5465,7 @@ package iot {
     val BUILDING   = "BUILDING"
     val REBUILDING = "REBUILDING"
 
-    val values = IndexedSeq(ACTIVE, BUILDING, REBUILDING)
+    val values = js.Object.freeze(js.Array(ACTIVE, BUILDING, REBUILDING))
   }
 
   /**
@@ -5549,7 +5549,7 @@ package iot {
     val STRING = "STRING"
     val NUMBER = "NUMBER"
 
-    val values = IndexedSeq(STRING, NUMBER)
+    val values = js.Object.freeze(js.Array(STRING, NUMBER))
   }
 
   /**
@@ -5685,18 +5685,20 @@ package iot {
     val CERTIFICATE            = "CERTIFICATE"
     val CA_CERTIFICATE         = "CA_CERTIFICATE"
 
-    val values = IndexedSeq(
-      THING,
-      THING_GROUP,
-      THING_TYPE,
-      THING_GROUP_MEMBERSHIP,
-      THING_GROUP_HIERARCHY,
-      THING_TYPE_ASSOCIATION,
-      JOB,
-      JOB_EXECUTION,
-      POLICY,
-      CERTIFICATE,
-      CA_CERTIFICATE
+    val values = js.Object.freeze(
+      js.Array(
+        THING,
+        THING_GROUP,
+        THING_TYPE,
+        THING_GROUP_MEMBERSHIP,
+        THING_GROUP_HIERARCHY,
+        THING_TYPE_ASSOCIATION,
+        JOB,
+        JOB_EXECUTION,
+        POLICY,
+        CERTIFICATE,
+        CA_CERTIFICATE
+      )
     )
   }
 
@@ -6269,7 +6271,7 @@ package iot {
     val BUILDING   = "BUILDING"
     val REBUILDING = "REBUILDING"
 
-    val values = IndexedSeq(ACTIVE, BUILDING, REBUILDING)
+    val values = js.Object.freeze(js.Array(ACTIVE, BUILDING, REBUILDING))
   }
 
   /**
@@ -6444,7 +6446,7 @@ package iot {
     val TIMED_OUT = "TIMED_OUT"
     val ALL       = "ALL"
 
-    val values = IndexedSeq(FAILED, REJECTED, TIMED_OUT, ALL)
+    val values = js.Object.freeze(js.Array(FAILED, REJECTED, TIMED_OUT, ALL))
   }
 
   object JobExecutionStatusEnum {
@@ -6457,7 +6459,8 @@ package iot {
     val REMOVED     = "REMOVED"
     val CANCELED    = "CANCELED"
 
-    val values = IndexedSeq(QUEUED, IN_PROGRESS, SUCCEEDED, FAILED, TIMED_OUT, REJECTED, REMOVED, CANCELED)
+    val values =
+      js.Object.freeze(js.Array(QUEUED, IN_PROGRESS, SUCCEEDED, FAILED, TIMED_OUT, REJECTED, REMOVED, CANCELED))
   }
 
   /**
@@ -6619,7 +6622,7 @@ package iot {
     val COMPLETED            = "COMPLETED"
     val DELETION_IN_PROGRESS = "DELETION_IN_PROGRESS"
 
-    val values = IndexedSeq(IN_PROGRESS, CANCELED, COMPLETED, DELETION_IN_PROGRESS)
+    val values = js.Object.freeze(js.Array(IN_PROGRESS, CANCELED, COMPLETED, DELETION_IN_PROGRESS))
   }
 
   /**
@@ -8612,7 +8615,7 @@ package iot {
     val WARN     = "WARN"
     val DISABLED = "DISABLED"
 
-    val values = IndexedSeq(DEBUG, INFO, ERROR, WARN, DISABLED)
+    val values = js.Object.freeze(js.Array(DEBUG, INFO, ERROR, WARN, DISABLED))
   }
 
   /**
@@ -8663,7 +8666,7 @@ package iot {
     val DEFAULT     = "DEFAULT"
     val THING_GROUP = "THING_GROUP"
 
-    val values = IndexedSeq(DEFAULT, THING_GROUP)
+    val values = js.Object.freeze(js.Array(DEFAULT, THING_GROUP))
   }
 
   /**
@@ -8693,7 +8696,7 @@ package iot {
     val RAW  = "RAW"
     val JSON = "JSON"
 
-    val values = IndexedSeq(RAW, JSON)
+    val values = js.Object.freeze(js.Array(RAW, JSON))
   }
 
   /**
@@ -8816,13 +8819,15 @@ package iot {
     val ENABLE_IOT_LOGGING             = "ENABLE_IOT_LOGGING"
     val PUBLISH_FINDING_TO_SNS         = "PUBLISH_FINDING_TO_SNS"
 
-    val values = IndexedSeq(
-      UPDATE_DEVICE_CERTIFICATE,
-      UPDATE_CA_CERTIFICATE,
-      ADD_THINGS_TO_THING_GROUP,
-      REPLACE_DEFAULT_POLICY_VERSION,
-      ENABLE_IOT_LOGGING,
-      PUBLISH_FINDING_TO_SNS
+    val values = js.Object.freeze(
+      js.Array(
+        UPDATE_DEVICE_CERTIFICATE,
+        UPDATE_CA_CERTIFICATE,
+        ADD_THINGS_TO_THING_GROUP,
+        REPLACE_DEFAULT_POLICY_VERSION,
+        ENABLE_IOT_LOGGING,
+        PUBLISH_FINDING_TO_SNS
+      )
     )
   }
 
@@ -8945,7 +8950,7 @@ package iot {
     val CREATE_COMPLETE    = "CREATE_COMPLETE"
     val CREATE_FAILED      = "CREATE_FAILED"
 
-    val values = IndexedSeq(CREATE_PENDING, CREATE_IN_PROGRESS, CREATE_COMPLETE, CREATE_FAILED)
+    val values = js.Object.freeze(js.Array(CREATE_PENDING, CREATE_IN_PROGRESS, CREATE_COMPLETE, CREATE_FAILED))
   }
 
   /**
@@ -9029,7 +9034,7 @@ package iot {
   object PolicyTemplateNameEnum {
     val BLANK_POLICY = "BLANK_POLICY"
 
-    val values = IndexedSeq(BLANK_POLICY)
+    val values = js.Object.freeze(js.Array(BLANK_POLICY))
   }
 
   /**
@@ -9487,7 +9492,7 @@ package iot {
     val ERRORS  = "ERRORS"
     val RESULTS = "RESULTS"
 
-    val values = IndexedSeq(ERRORS, RESULTS)
+    val values = js.Object.freeze(js.Array(ERRORS, RESULTS))
   }
 
   /**
@@ -9557,8 +9562,9 @@ package iot {
     val CLIENT_ID             = "CLIENT_ID"
     val ACCOUNT_SETTINGS      = "ACCOUNT_SETTINGS"
 
-    val values =
-      IndexedSeq(DEVICE_CERTIFICATE, CA_CERTIFICATE, IOT_POLICY, COGNITO_IDENTITY_POOL, CLIENT_ID, ACCOUNT_SETTINGS)
+    val values = js.Object.freeze(
+      js.Array(DEVICE_CERTIFICATE, CA_CERTIFICATE, IOT_POLICY, COGNITO_IDENTITY_POOL, CLIENT_ID, ACCOUNT_SETTINGS)
+    )
   }
 
   /**
@@ -10214,7 +10220,7 @@ package iot {
     val Cancelled  = "Cancelled"
     val Cancelling = "Cancelling"
 
-    val values = IndexedSeq(InProgress, Completed, Failed, Cancelled, Cancelling)
+    val values = js.Object.freeze(js.Array(InProgress, Completed, Failed, Cancelled, Cancelling))
   }
 
   /**
@@ -10437,7 +10443,7 @@ package iot {
     val CONTINUOUS = "CONTINUOUS"
     val SNAPSHOT   = "SNAPSHOT"
 
-    val values = IndexedSeq(CONTINUOUS, SNAPSHOT)
+    val values = js.Object.freeze(js.Array(CONTINUOUS, SNAPSHOT))
   }
 
   /**
@@ -10660,7 +10666,7 @@ package iot {
     val OFF    = "OFF"
     val STATUS = "STATUS"
 
-    val values = IndexedSeq(OFF, STATUS)
+    val values = js.Object.freeze(js.Array(OFF, STATUS))
   }
 
   /**
@@ -10753,7 +10759,7 @@ package iot {
     val OFF = "OFF"
     val ON  = "ON"
 
-    val values = IndexedSeq(OFF, ON)
+    val values = js.Object.freeze(js.Array(OFF, ON))
   }
 
   /**
@@ -10831,7 +10837,7 @@ package iot {
     val REGISTRY            = "REGISTRY"
     val REGISTRY_AND_SHADOW = "REGISTRY_AND_SHADOW"
 
-    val values = IndexedSeq(OFF, REGISTRY, REGISTRY_AND_SHADOW)
+    val values = js.Object.freeze(js.Array(OFF, REGISTRY, REGISTRY_AND_SHADOW))
   }
 
   /**
@@ -11960,6 +11966,6 @@ package iot {
     val `alarm-cleared`     = "alarm-cleared"
     val `alarm-invalidated` = "alarm-invalidated"
 
-    val values = IndexedSeq(`in-alarm`, `alarm-cleared`, `alarm-invalidated`)
+    val values = js.Object.freeze(js.Array(`in-alarm`, `alarm-cleared`, `alarm-invalidated`))
   }
 }
diff --git a/services/iotanalytics/src/main/scala/facade/amazonaws/services/IoTAnalytics.scala b/services/iotanalytics/src/main/scala/facade/amazonaws/services/IoTAnalytics.scala
index 3550cc4de..d2ca2f7cc 100644
--- a/services/iotanalytics/src/main/scala/facade/amazonaws/services/IoTAnalytics.scala
+++ b/services/iotanalytics/src/main/scala/facade/amazonaws/services/IoTAnalytics.scala
@@ -421,7 +421,7 @@ package iotanalytics {
     val ACTIVE   = "ACTIVE"
     val DELETING = "DELETING"
 
-    val values = IndexedSeq(CREATING, ACTIVE, DELETING)
+    val values = js.Object.freeze(js.Array(CREATING, ACTIVE, DELETING))
   }
 
   /**
@@ -500,7 +500,7 @@ package iotanalytics {
     val ACU_1 = "ACU_1"
     val ACU_2 = "ACU_2"
 
-    val values = IndexedSeq(ACU_1, ACU_2)
+    val values = js.Object.freeze(js.Array(ACU_1, ACU_2))
   }
 
   /**
@@ -949,7 +949,7 @@ package iotanalytics {
     val QUERY     = "QUERY"
     val CONTAINER = "CONTAINER"
 
-    val values = IndexedSeq(QUERY, CONTAINER)
+    val values = js.Object.freeze(js.Array(QUERY, CONTAINER))
   }
 
   /**
@@ -1003,7 +1003,7 @@ package iotanalytics {
     val SUCCEEDED = "SUCCEEDED"
     val FAILED    = "FAILED"
 
-    val values = IndexedSeq(CREATING, SUCCEEDED, FAILED)
+    val values = js.Object.freeze(js.Array(CREATING, SUCCEEDED, FAILED))
   }
 
   /**
@@ -1100,7 +1100,7 @@ package iotanalytics {
     val ACTIVE   = "ACTIVE"
     val DELETING = "DELETING"
 
-    val values = IndexedSeq(CREATING, ACTIVE, DELETING)
+    val values = js.Object.freeze(js.Array(CREATING, ACTIVE, DELETING))
   }
 
   /**
@@ -1239,7 +1239,7 @@ package iotanalytics {
     val ACTIVE   = "ACTIVE"
     val DELETING = "DELETING"
 
-    val values = IndexedSeq(CREATING, ACTIVE, DELETING)
+    val values = js.Object.freeze(js.Array(CREATING, ACTIVE, DELETING))
   }
 
   /**
@@ -2045,7 +2045,7 @@ package iotanalytics {
   object LoggingLevelEnum {
     val ERROR = "ERROR"
 
-    val values = IndexedSeq(ERROR)
+    val values = js.Object.freeze(js.Array(ERROR))
   }
 
   /**
@@ -2318,7 +2318,7 @@ package iotanalytics {
     val CANCELLED = "CANCELLED"
     val FAILED    = "FAILED"
 
-    val values = IndexedSeq(RUNNING, SUCCEEDED, CANCELLED, FAILED)
+    val values = js.Object.freeze(js.Array(RUNNING, SUCCEEDED, CANCELLED, FAILED))
   }
 
   /**
diff --git a/services/iotevents/src/main/scala/facade/amazonaws/services/IoTEvents.scala b/services/iotevents/src/main/scala/facade/amazonaws/services/IoTEvents.scala
index ec003987b..689c48798 100644
--- a/services/iotevents/src/main/scala/facade/amazonaws/services/IoTEvents.scala
+++ b/services/iotevents/src/main/scala/facade/amazonaws/services/IoTEvents.scala
@@ -583,7 +583,7 @@ package iotevents {
     val PAUSED     = "PAUSED"
     val FAILED     = "FAILED"
 
-    val values = IndexedSeq(ACTIVE, ACTIVATING, INACTIVE, DEPRECATED, DRAFT, PAUSED, FAILED)
+    val values = js.Object.freeze(js.Array(ACTIVE, ACTIVATING, INACTIVE, DEPRECATED, DRAFT, PAUSED, FAILED))
   }
 
   /**
@@ -753,7 +753,7 @@ package iotevents {
     val ACTIVE   = "ACTIVE"
     val DELETING = "DELETING"
 
-    val values = IndexedSeq(CREATING, UPDATING, ACTIVE, DELETING)
+    val values = js.Object.freeze(js.Array(CREATING, UPDATING, ACTIVE, DELETING))
   }
 
   /**
@@ -1001,7 +1001,7 @@ package iotevents {
     val INFO  = "INFO"
     val DEBUG = "DEBUG"
 
-    val values = IndexedSeq(ERROR, INFO, DEBUG)
+    val values = js.Object.freeze(js.Array(ERROR, INFO, DEBUG))
   }
 
   /**
diff --git a/services/ioteventsdata/src/main/scala/facade/amazonaws/services/IoTEventsData.scala b/services/ioteventsdata/src/main/scala/facade/amazonaws/services/IoTEventsData.scala
index ce9fa601d..37bb0cc7b 100644
--- a/services/ioteventsdata/src/main/scala/facade/amazonaws/services/IoTEventsData.scala
+++ b/services/ioteventsdata/src/main/scala/facade/amazonaws/services/IoTEventsData.scala
@@ -352,12 +352,14 @@ package ioteventsdata {
     val ServiceUnavailableException = "ServiceUnavailableException"
     val ThrottlingException         = "ThrottlingException"
 
-    val values = IndexedSeq(
-      ResourceNotFoundException,
-      InvalidRequestException,
-      InternalFailureException,
-      ServiceUnavailableException,
-      ThrottlingException
+    val values = js.Object.freeze(
+      js.Array(
+        ResourceNotFoundException,
+        InvalidRequestException,
+        InternalFailureException,
+        ServiceUnavailableException,
+        ThrottlingException
+      )
     )
   }
 
diff --git a/services/iotjobsdataplane/src/main/scala/facade/amazonaws/services/IoTJobsDataPlane.scala b/services/iotjobsdataplane/src/main/scala/facade/amazonaws/services/IoTJobsDataPlane.scala
index 033742992..878736943 100644
--- a/services/iotjobsdataplane/src/main/scala/facade/amazonaws/services/IoTJobsDataPlane.scala
+++ b/services/iotjobsdataplane/src/main/scala/facade/amazonaws/services/IoTJobsDataPlane.scala
@@ -217,7 +217,8 @@ package iotjobsdataplane {
     val REMOVED     = "REMOVED"
     val CANCELED    = "CANCELED"
 
-    val values = IndexedSeq(QUEUED, IN_PROGRESS, SUCCEEDED, FAILED, TIMED_OUT, REJECTED, REMOVED, CANCELED)
+    val values =
+      js.Object.freeze(js.Array(QUEUED, IN_PROGRESS, SUCCEEDED, FAILED, TIMED_OUT, REJECTED, REMOVED, CANCELED))
   }
 
   /**
diff --git a/services/iotthingsgraph/src/main/scala/facade/amazonaws/services/IoTThingsGraph.scala b/services/iotthingsgraph/src/main/scala/facade/amazonaws/services/IoTThingsGraph.scala
index 871ba690e..1779f8e12 100644
--- a/services/iotthingsgraph/src/main/scala/facade/amazonaws/services/IoTThingsGraph.scala
+++ b/services/iotthingsgraph/src/main/scala/facade/amazonaws/services/IoTThingsGraph.scala
@@ -390,7 +390,7 @@ package iotthingsgraph {
   object DefinitionLanguageEnum {
     val GRAPHQL = "GRAPHQL"
 
-    val values = IndexedSeq(GRAPHQL)
+    val values = js.Object.freeze(js.Array(GRAPHQL))
   }
 
   @js.native
@@ -568,7 +568,7 @@ package iotthingsgraph {
     val GREENGRASS = "GREENGRASS"
     val CLOUD      = "CLOUD"
 
-    val values = IndexedSeq(GREENGRASS, CLOUD)
+    val values = js.Object.freeze(js.Array(GREENGRASS, CLOUD))
   }
 
   @js.native
@@ -760,7 +760,7 @@ package iotthingsgraph {
     val SEMANTIC_TYPE_PATH   = "SEMANTIC_TYPE_PATH"
     val REFERENCED_ENTITY_ID = "REFERENCED_ENTITY_ID"
 
-    val values = IndexedSeq(NAME, NAMESPACE, SEMANTIC_TYPE_PATH, REFERENCED_ENTITY_ID)
+    val values = js.Object.freeze(js.Array(NAME, NAMESPACE, SEMANTIC_TYPE_PATH, REFERENCED_ENTITY_ID))
   }
 
   object EntityTypeEnum {
@@ -775,7 +775,9 @@ package iotthingsgraph {
     val MAPPING      = "MAPPING"
     val ENUM         = "ENUM"
 
-    val values = IndexedSeq(DEVICE, SERVICE, DEVICE_MODEL, CAPABILITY, STATE, ACTION, EVENT, PROPERTY, MAPPING, ENUM)
+    val values = js.Object.freeze(
+      js.Array(DEVICE, SERVICE, DEVICE_MODEL, CAPABILITY, STATE, ACTION, EVENT, PROPERTY, MAPPING, ENUM)
+    )
   }
 
   object FlowExecutionEventTypeEnum {
@@ -797,24 +799,26 @@ package iotthingsgraph {
     val THING_ACTION_TASK_SUCCEEDED    = "THING_ACTION_TASK_SUCCEEDED"
     val ACKNOWLEDGE_TASK_MESSAGE       = "ACKNOWLEDGE_TASK_MESSAGE"
 
-    val values = IndexedSeq(
-      EXECUTION_STARTED,
-      EXECUTION_FAILED,
-      EXECUTION_ABORTED,
-      EXECUTION_SUCCEEDED,
-      STEP_STARTED,
-      STEP_FAILED,
-      STEP_SUCCEEDED,
-      ACTIVITY_SCHEDULED,
-      ACTIVITY_STARTED,
-      ACTIVITY_FAILED,
-      ACTIVITY_SUCCEEDED,
-      START_FLOW_EXECUTION_TASK,
-      SCHEDULE_NEXT_READY_STEPS_TASK,
-      THING_ACTION_TASK,
-      THING_ACTION_TASK_FAILED,
-      THING_ACTION_TASK_SUCCEEDED,
-      ACKNOWLEDGE_TASK_MESSAGE
+    val values = js.Object.freeze(
+      js.Array(
+        EXECUTION_STARTED,
+        EXECUTION_FAILED,
+        EXECUTION_ABORTED,
+        EXECUTION_SUCCEEDED,
+        STEP_STARTED,
+        STEP_FAILED,
+        STEP_SUCCEEDED,
+        ACTIVITY_SCHEDULED,
+        ACTIVITY_STARTED,
+        ACTIVITY_FAILED,
+        ACTIVITY_SUCCEEDED,
+        START_FLOW_EXECUTION_TASK,
+        SCHEDULE_NEXT_READY_STEPS_TASK,
+        THING_ACTION_TASK,
+        THING_ACTION_TASK_FAILED,
+        THING_ACTION_TASK_SUCCEEDED,
+        ACKNOWLEDGE_TASK_MESSAGE
+      )
     )
   }
 
@@ -851,7 +855,7 @@ package iotthingsgraph {
     val SUCCEEDED = "SUCCEEDED"
     val FAILED    = "FAILED"
 
-    val values = IndexedSeq(RUNNING, ABORTED, SUCCEEDED, FAILED)
+    val values = js.Object.freeze(js.Array(RUNNING, ABORTED, SUCCEEDED, FAILED))
   }
 
   /**
@@ -937,7 +941,7 @@ package iotthingsgraph {
   object FlowTemplateFilterNameEnum {
     val DEVICE_MODEL_ID = "DEVICE_MODEL_ID"
 
-    val values = IndexedSeq(DEVICE_MODEL_ID)
+    val values = js.Object.freeze(js.Array(DEVICE_MODEL_ID))
   }
 
   /**
@@ -1385,13 +1389,13 @@ package iotthingsgraph {
     val SUCCEEDED   = "SUCCEEDED"
     val FAILED      = "FAILED"
 
-    val values = IndexedSeq(IN_PROGRESS, SUCCEEDED, FAILED)
+    val values = js.Object.freeze(js.Array(IN_PROGRESS, SUCCEEDED, FAILED))
   }
 
   object NamespaceDeletionStatusErrorCodesEnum {
     val VALIDATION_FAILED = "VALIDATION_FAILED"
 
-    val values = IndexedSeq(VALIDATION_FAILED)
+    val values = js.Object.freeze(js.Array(VALIDATION_FAILED))
   }
 
   @js.native
@@ -1662,15 +1666,17 @@ package iotthingsgraph {
     val PENDING_DELETE       = "PENDING_DELETE"
     val DELETED_IN_TARGET    = "DELETED_IN_TARGET"
 
-    val values = IndexedSeq(
-      NOT_DEPLOYED,
-      BOOTSTRAP,
-      DEPLOY_IN_PROGRESS,
-      DEPLOYED_IN_TARGET,
-      UNDEPLOY_IN_PROGRESS,
-      FAILED,
-      PENDING_DELETE,
-      DELETED_IN_TARGET
+    val values = js.Object.freeze(
+      js.Array(
+        NOT_DEPLOYED,
+        BOOTSTRAP,
+        DEPLOY_IN_PROGRESS,
+        DEPLOYED_IN_TARGET,
+        UNDEPLOY_IN_PROGRESS,
+        FAILED,
+        PENDING_DELETE,
+        DELETED_IN_TARGET
+      )
     )
   }
 
@@ -1738,7 +1744,7 @@ package iotthingsgraph {
     val STATUS                = "STATUS"
     val GREENGRASS_GROUP_NAME = "GREENGRASS_GROUP_NAME"
 
-    val values = IndexedSeq(SYSTEM_TEMPLATE_ID, STATUS, GREENGRASS_GROUP_NAME)
+    val values = js.Object.freeze(js.Array(SYSTEM_TEMPLATE_ID, STATUS, GREENGRASS_GROUP_NAME))
   }
 
   /**
@@ -1833,7 +1839,7 @@ package iotthingsgraph {
   object SystemTemplateFilterNameEnum {
     val FLOW_TEMPLATE_ID = "FLOW_TEMPLATE_ID"
 
-    val values = IndexedSeq(FLOW_TEMPLATE_ID)
+    val values = js.Object.freeze(js.Array(FLOW_TEMPLATE_ID))
   }
 
   /**
@@ -2120,6 +2126,6 @@ package iotthingsgraph {
     val SUCCEEDED   = "SUCCEEDED"
     val FAILED      = "FAILED"
 
-    val values = IndexedSeq(IN_PROGRESS, SUCCEEDED, FAILED)
+    val values = js.Object.freeze(js.Array(IN_PROGRESS, SUCCEEDED, FAILED))
   }
 }
diff --git a/services/kafka/src/main/scala/facade/amazonaws/services/Kafka.scala b/services/kafka/src/main/scala/facade/amazonaws/services/Kafka.scala
index 417b82554..046b338eb 100644
--- a/services/kafka/src/main/scala/facade/amazonaws/services/Kafka.scala
+++ b/services/kafka/src/main/scala/facade/amazonaws/services/Kafka.scala
@@ -119,7 +119,7 @@ package kafka {
   object BrokerAZDistributionEnum {
     val DEFAULT = "DEFAULT"
 
-    val values = IndexedSeq(DEFAULT)
+    val values = js.Object.freeze(js.Array(DEFAULT))
   }
 
   /**
@@ -266,7 +266,7 @@ package kafka {
     val TLS_PLAINTEXT = "TLS_PLAINTEXT"
     val PLAINTEXT     = "PLAINTEXT"
 
-    val values = IndexedSeq(TLS, TLS_PLAINTEXT, PLAINTEXT)
+    val values = js.Object.freeze(js.Array(TLS, TLS_PLAINTEXT, PLAINTEXT))
   }
 
   /**
@@ -384,7 +384,7 @@ package kafka {
     val DELETING = "DELETING"
     val FAILED   = "FAILED"
 
-    val values = IndexedSeq(ACTIVE, CREATING, UPDATING, DELETING, FAILED)
+    val values = js.Object.freeze(js.Array(ACTIVE, CREATING, UPDATING, DELETING, FAILED))
   }
 
   /**
@@ -875,7 +875,7 @@ package kafka {
     val PER_BROKER           = "PER_BROKER"
     val PER_TOPIC_PER_BROKER = "PER_TOPIC_PER_BROKER"
 
-    val values = IndexedSeq(DEFAULT, PER_BROKER, PER_TOPIC_PER_BROKER)
+    val values = js.Object.freeze(js.Array(DEFAULT, PER_BROKER, PER_TOPIC_PER_BROKER))
   }
 
   /**
@@ -1231,7 +1231,7 @@ package kafka {
   object NodeTypeEnum {
     val BROKER = "BROKER"
 
-    val values = IndexedSeq(BROKER)
+    val values = js.Object.freeze(js.Array(BROKER))
   }
 
   /**
diff --git a/services/kinesis/src/main/scala/facade/amazonaws/services/Kinesis.scala b/services/kinesis/src/main/scala/facade/amazonaws/services/Kinesis.scala
index 28a110899..724626ae7 100644
--- a/services/kinesis/src/main/scala/facade/amazonaws/services/Kinesis.scala
+++ b/services/kinesis/src/main/scala/facade/amazonaws/services/Kinesis.scala
@@ -233,7 +233,7 @@ package kinesis {
     val DELETING = "DELETING"
     val ACTIVE   = "ACTIVE"
 
-    val values = IndexedSeq(CREATING, DELETING, ACTIVE)
+    val values = js.Object.freeze(js.Array(CREATING, DELETING, ACTIVE))
   }
 
   /**
@@ -526,7 +526,7 @@ package kinesis {
     val NONE = "NONE"
     val KMS  = "KMS"
 
-    val values = IndexedSeq(NONE, KMS)
+    val values = js.Object.freeze(js.Array(NONE, KMS))
   }
 
   /**
@@ -1019,15 +1019,17 @@ package kinesis {
     val IteratorAgeMilliseconds            = "IteratorAgeMilliseconds"
     val ALL                                = "ALL"
 
-    val values = IndexedSeq(
-      IncomingBytes,
-      IncomingRecords,
-      OutgoingBytes,
-      OutgoingRecords,
-      WriteProvisionedThroughputExceeded,
-      ReadProvisionedThroughputExceeded,
-      IteratorAgeMilliseconds,
-      ALL
+    val values = js.Object.freeze(
+      js.Array(
+        IncomingBytes,
+        IncomingRecords,
+        OutgoingBytes,
+        OutgoingRecords,
+        WriteProvisionedThroughputExceeded,
+        ReadProvisionedThroughputExceeded,
+        IteratorAgeMilliseconds,
+        ALL
+      )
     )
   }
 
@@ -1310,7 +1312,7 @@ package kinesis {
   object ScalingTypeEnum {
     val UNIFORM_SCALING = "UNIFORM_SCALING"
 
-    val values = IndexedSeq(UNIFORM_SCALING)
+    val values = js.Object.freeze(js.Array(UNIFORM_SCALING))
   }
 
   /**
@@ -1375,7 +1377,8 @@ package kinesis {
     val LATEST                = "LATEST"
     val AT_TIMESTAMP          = "AT_TIMESTAMP"
 
-    val values = IndexedSeq(AT_SEQUENCE_NUMBER, AFTER_SEQUENCE_NUMBER, TRIM_HORIZON, LATEST, AT_TIMESTAMP)
+    val values =
+      js.Object.freeze(js.Array(AT_SEQUENCE_NUMBER, AFTER_SEQUENCE_NUMBER, TRIM_HORIZON, LATEST, AT_TIMESTAMP))
   }
 
   /**
@@ -1573,7 +1576,7 @@ package kinesis {
     val ACTIVE   = "ACTIVE"
     val UPDATING = "UPDATING"
 
-    val values = IndexedSeq(CREATING, DELETING, ACTIVE, UPDATING)
+    val values = js.Object.freeze(js.Array(CREATING, DELETING, ACTIVE, UPDATING))
   }
 
   /**
diff --git a/services/kinesisanalytics/src/main/scala/facade/amazonaws/services/KinesisAnalytics.scala b/services/kinesisanalytics/src/main/scala/facade/amazonaws/services/KinesisAnalytics.scala
index b992609df..5b085501a 100644
--- a/services/kinesisanalytics/src/main/scala/facade/amazonaws/services/KinesisAnalytics.scala
+++ b/services/kinesisanalytics/src/main/scala/facade/amazonaws/services/KinesisAnalytics.scala
@@ -422,7 +422,7 @@ package kinesisanalytics {
     val RUNNING  = "RUNNING"
     val UPDATING = "UPDATING"
 
-    val values = IndexedSeq(DELETING, STARTING, STOPPING, READY, RUNNING, UPDATING)
+    val values = js.Object.freeze(js.Array(DELETING, STARTING, STOPPING, READY, RUNNING, UPDATING))
   }
 
   /**
@@ -1244,7 +1244,7 @@ package kinesisanalytics {
     val TRIM_HORIZON       = "TRIM_HORIZON"
     val LAST_STOPPED_POINT = "LAST_STOPPED_POINT"
 
-    val values = IndexedSeq(NOW, TRIM_HORIZON, LAST_STOPPED_POINT)
+    val values = js.Object.freeze(js.Array(NOW, TRIM_HORIZON, LAST_STOPPED_POINT))
   }
 
   /**
@@ -1908,7 +1908,7 @@ package kinesisanalytics {
     val JSON = "JSON"
     val CSV  = "CSV"
 
-    val values = IndexedSeq(JSON, CSV)
+    val values = js.Object.freeze(js.Array(JSON, CSV))
   }
 
   /**
diff --git a/services/kinesisanalyticsv2/src/main/scala/facade/amazonaws/services/KinesisAnalyticsV2.scala b/services/kinesisanalyticsv2/src/main/scala/facade/amazonaws/services/KinesisAnalyticsV2.scala
index 7b5704a78..47790e649 100644
--- a/services/kinesisanalyticsv2/src/main/scala/facade/amazonaws/services/KinesisAnalyticsV2.scala
+++ b/services/kinesisanalyticsv2/src/main/scala/facade/amazonaws/services/KinesisAnalyticsV2.scala
@@ -708,7 +708,8 @@ package kinesisanalyticsv2 {
     val RESTORE_FROM_LATEST_SNAPSHOT = "RESTORE_FROM_LATEST_SNAPSHOT"
     val RESTORE_FROM_CUSTOM_SNAPSHOT = "RESTORE_FROM_CUSTOM_SNAPSHOT"
 
-    val values = IndexedSeq(SKIP_RESTORE_FROM_SNAPSHOT, RESTORE_FROM_LATEST_SNAPSHOT, RESTORE_FROM_CUSTOM_SNAPSHOT)
+    val values =
+      js.Object.freeze(js.Array(SKIP_RESTORE_FROM_SNAPSHOT, RESTORE_FROM_LATEST_SNAPSHOT, RESTORE_FROM_CUSTOM_SNAPSHOT))
   }
 
   /**
@@ -779,7 +780,7 @@ package kinesisanalyticsv2 {
     val RUNNING  = "RUNNING"
     val UPDATING = "UPDATING"
 
-    val values = IndexedSeq(DELETING, STARTING, STOPPING, READY, RUNNING, UPDATING)
+    val values = js.Object.freeze(js.Array(DELETING, STARTING, STOPPING, READY, RUNNING, UPDATING))
   }
 
   /**
@@ -1050,7 +1051,7 @@ package kinesisanalyticsv2 {
     val PLAINTEXT = "PLAINTEXT"
     val ZIPFILE   = "ZIPFILE"
 
-    val values = IndexedSeq(PLAINTEXT, ZIPFILE)
+    val values = js.Object.freeze(js.Array(PLAINTEXT, ZIPFILE))
   }
 
   /**
@@ -1081,7 +1082,7 @@ package kinesisanalyticsv2 {
     val DEFAULT = "DEFAULT"
     val CUSTOM  = "CUSTOM"
 
-    val values = IndexedSeq(DEFAULT, CUSTOM)
+    val values = js.Object.freeze(js.Array(DEFAULT, CUSTOM))
   }
 
   @js.native
@@ -1977,7 +1978,7 @@ package kinesisanalyticsv2 {
     val TRIM_HORIZON       = "TRIM_HORIZON"
     val LAST_STOPPED_POINT = "LAST_STOPPED_POINT"
 
-    val values = IndexedSeq(NOW, TRIM_HORIZON, LAST_STOPPED_POINT)
+    val values = js.Object.freeze(js.Array(NOW, TRIM_HORIZON, LAST_STOPPED_POINT))
   }
 
   /**
@@ -2490,7 +2491,7 @@ package kinesisanalyticsv2 {
     val ERROR = "ERROR"
     val DEBUG = "DEBUG"
 
-    val values = IndexedSeq(INFO, WARN, ERROR, DEBUG)
+    val values = js.Object.freeze(js.Array(INFO, WARN, ERROR, DEBUG))
   }
 
   /**
@@ -2520,7 +2521,7 @@ package kinesisanalyticsv2 {
     val OPERATOR    = "OPERATOR"
     val PARALLELISM = "PARALLELISM"
 
-    val values = IndexedSeq(APPLICATION, TASK, OPERATOR, PARALLELISM)
+    val values = js.Object.freeze(js.Array(APPLICATION, TASK, OPERATOR, PARALLELISM))
   }
 
   /**
@@ -2865,7 +2866,7 @@ package kinesisanalyticsv2 {
     val JSON = "JSON"
     val CSV  = "CSV"
 
-    val values = IndexedSeq(JSON, CSV)
+    val values = js.Object.freeze(js.Array(JSON, CSV))
   }
 
   /**
@@ -3019,7 +3020,7 @@ package kinesisanalyticsv2 {
     val `SQL-1_0`   = "SQL-1_0"
     val `FLINK-1_6` = "FLINK-1_6"
 
-    val values = IndexedSeq(`SQL-1_0`, `FLINK-1_6`)
+    val values = js.Object.freeze(js.Array(`SQL-1_0`, `FLINK-1_6`))
   }
 
   /**
@@ -3225,7 +3226,7 @@ package kinesisanalyticsv2 {
     val DELETING = "DELETING"
     val FAILED   = "FAILED"
 
-    val values = IndexedSeq(CREATING, READY, DELETING, FAILED)
+    val values = js.Object.freeze(js.Array(CREATING, READY, DELETING, FAILED))
   }
 
   /**
diff --git a/services/kinesisvideo/src/main/scala/facade/amazonaws/services/KinesisVideo.scala b/services/kinesisvideo/src/main/scala/facade/amazonaws/services/KinesisVideo.scala
index 6e01b1088..9d216a706 100644
--- a/services/kinesisvideo/src/main/scala/facade/amazonaws/services/KinesisVideo.scala
+++ b/services/kinesisvideo/src/main/scala/facade/amazonaws/services/KinesisVideo.scala
@@ -80,20 +80,22 @@ package kinesisvideo {
     val GET_HLS_STREAMING_SESSION_URL  = "GET_HLS_STREAMING_SESSION_URL"
     val GET_DASH_STREAMING_SESSION_URL = "GET_DASH_STREAMING_SESSION_URL"
 
-    val values = IndexedSeq(
-      PUT_MEDIA,
-      GET_MEDIA,
-      LIST_FRAGMENTS,
-      GET_MEDIA_FOR_FRAGMENT_LIST,
-      GET_HLS_STREAMING_SESSION_URL,
-      GET_DASH_STREAMING_SESSION_URL
+    val values = js.Object.freeze(
+      js.Array(
+        PUT_MEDIA,
+        GET_MEDIA,
+        LIST_FRAGMENTS,
+        GET_MEDIA_FOR_FRAGMENT_LIST,
+        GET_HLS_STREAMING_SESSION_URL,
+        GET_DASH_STREAMING_SESSION_URL
+      )
     )
   }
 
   object ComparisonOperatorEnum {
     val BEGINS_WITH = "BEGINS_WITH"
 
-    val values = IndexedSeq(BEGINS_WITH)
+    val values = js.Object.freeze(js.Array(BEGINS_WITH))
   }
 
   @js.native
@@ -330,7 +332,7 @@ package kinesisvideo {
     val UPDATING = "UPDATING"
     val DELETING = "DELETING"
 
-    val values = IndexedSeq(CREATING, ACTIVE, UPDATING, DELETING)
+    val values = js.Object.freeze(js.Array(CREATING, ACTIVE, UPDATING, DELETING))
   }
 
   /**
@@ -499,7 +501,7 @@ package kinesisvideo {
     val INCREASE_DATA_RETENTION = "INCREASE_DATA_RETENTION"
     val DECREASE_DATA_RETENTION = "DECREASE_DATA_RETENTION"
 
-    val values = IndexedSeq(INCREASE_DATA_RETENTION, DECREASE_DATA_RETENTION)
+    val values = js.Object.freeze(js.Array(INCREASE_DATA_RETENTION, DECREASE_DATA_RETENTION))
   }
 
   @js.native
diff --git a/services/kinesisvideoarchivedmedia/src/main/scala/facade/amazonaws/services/KinesisVideoArchivedMedia.scala b/services/kinesisvideoarchivedmedia/src/main/scala/facade/amazonaws/services/KinesisVideoArchivedMedia.scala
index 27609a30c..b44171d78 100644
--- a/services/kinesisvideoarchivedmedia/src/main/scala/facade/amazonaws/services/KinesisVideoArchivedMedia.scala
+++ b/services/kinesisvideoarchivedmedia/src/main/scala/facade/amazonaws/services/KinesisVideoArchivedMedia.scala
@@ -66,21 +66,21 @@ package kinesisvideoarchivedmedia {
     val FRAGMENTED_MP4 = "FRAGMENTED_MP4"
     val MPEG_TS        = "MPEG_TS"
 
-    val values = IndexedSeq(FRAGMENTED_MP4, MPEG_TS)
+    val values = js.Object.freeze(js.Array(FRAGMENTED_MP4, MPEG_TS))
   }
 
   object DASHDisplayFragmentNumberEnum {
     val ALWAYS = "ALWAYS"
     val NEVER  = "NEVER"
 
-    val values = IndexedSeq(ALWAYS, NEVER)
+    val values = js.Object.freeze(js.Array(ALWAYS, NEVER))
   }
 
   object DASHDisplayFragmentTimestampEnum {
     val ALWAYS = "ALWAYS"
     val NEVER  = "NEVER"
 
-    val values = IndexedSeq(ALWAYS, NEVER)
+    val values = js.Object.freeze(js.Array(ALWAYS, NEVER))
   }
 
   /**
@@ -108,7 +108,7 @@ package kinesisvideoarchivedmedia {
     val PRODUCER_TIMESTAMP = "PRODUCER_TIMESTAMP"
     val SERVER_TIMESTAMP   = "SERVER_TIMESTAMP"
 
-    val values = IndexedSeq(PRODUCER_TIMESTAMP, SERVER_TIMESTAMP)
+    val values = js.Object.freeze(js.Array(PRODUCER_TIMESTAMP, SERVER_TIMESTAMP))
   }
 
   object DASHPlaybackModeEnum {
@@ -116,7 +116,7 @@ package kinesisvideoarchivedmedia {
     val LIVE_REPLAY = "LIVE_REPLAY"
     val ON_DEMAND   = "ON_DEMAND"
 
-    val values = IndexedSeq(LIVE, LIVE_REPLAY, ON_DEMAND)
+    val values = js.Object.freeze(js.Array(LIVE, LIVE_REPLAY, ON_DEMAND))
   }
 
   /**
@@ -208,7 +208,7 @@ package kinesisvideoarchivedmedia {
     val PRODUCER_TIMESTAMP = "PRODUCER_TIMESTAMP"
     val SERVER_TIMESTAMP   = "SERVER_TIMESTAMP"
 
-    val values = IndexedSeq(PRODUCER_TIMESTAMP, SERVER_TIMESTAMP)
+    val values = js.Object.freeze(js.Array(PRODUCER_TIMESTAMP, SERVER_TIMESTAMP))
   }
 
   @js.native
@@ -360,14 +360,14 @@ package kinesisvideoarchivedmedia {
     val ALWAYS = "ALWAYS"
     val NEVER  = "NEVER"
 
-    val values = IndexedSeq(ALWAYS, NEVER)
+    val values = js.Object.freeze(js.Array(ALWAYS, NEVER))
   }
 
   object HLSDisplayFragmentTimestampEnum {
     val ALWAYS = "ALWAYS"
     val NEVER  = "NEVER"
 
-    val values = IndexedSeq(ALWAYS, NEVER)
+    val values = js.Object.freeze(js.Array(ALWAYS, NEVER))
   }
 
   /**
@@ -395,7 +395,7 @@ package kinesisvideoarchivedmedia {
     val PRODUCER_TIMESTAMP = "PRODUCER_TIMESTAMP"
     val SERVER_TIMESTAMP   = "SERVER_TIMESTAMP"
 
-    val values = IndexedSeq(PRODUCER_TIMESTAMP, SERVER_TIMESTAMP)
+    val values = js.Object.freeze(js.Array(PRODUCER_TIMESTAMP, SERVER_TIMESTAMP))
   }
 
   object HLSPlaybackModeEnum {
@@ -403,7 +403,7 @@ package kinesisvideoarchivedmedia {
     val LIVE_REPLAY = "LIVE_REPLAY"
     val ON_DEMAND   = "ON_DEMAND"
 
-    val values = IndexedSeq(LIVE, LIVE_REPLAY, ON_DEMAND)
+    val values = js.Object.freeze(js.Array(LIVE, LIVE_REPLAY, ON_DEMAND))
   }
 
   /**
diff --git a/services/kinesisvideomedia/src/main/scala/facade/amazonaws/services/KinesisVideoMedia.scala b/services/kinesisvideomedia/src/main/scala/facade/amazonaws/services/KinesisVideoMedia.scala
index f31377a2d..61528bfa5 100644
--- a/services/kinesisvideomedia/src/main/scala/facade/amazonaws/services/KinesisVideoMedia.scala
+++ b/services/kinesisvideomedia/src/main/scala/facade/amazonaws/services/KinesisVideoMedia.scala
@@ -114,6 +114,8 @@ package kinesisvideomedia {
     val EARLIEST           = "EARLIEST"
     val CONTINUATION_TOKEN = "CONTINUATION_TOKEN"
 
-    val values = IndexedSeq(FRAGMENT_NUMBER, SERVER_TIMESTAMP, PRODUCER_TIMESTAMP, NOW, EARLIEST, CONTINUATION_TOKEN)
+    val values = js.Object.freeze(
+      js.Array(FRAGMENT_NUMBER, SERVER_TIMESTAMP, PRODUCER_TIMESTAMP, NOW, EARLIEST, CONTINUATION_TOKEN)
+    )
   }
 }
diff --git a/services/kms/src/main/scala/facade/amazonaws/services/KMS.scala b/services/kms/src/main/scala/facade/amazonaws/services/KMS.scala
index 0a54d4247..b4c2e6be2 100644
--- a/services/kms/src/main/scala/facade/amazonaws/services/KMS.scala
+++ b/services/kms/src/main/scala/facade/amazonaws/services/KMS.scala
@@ -198,7 +198,7 @@ package kms {
     val RSAES_OAEP_SHA_1   = "RSAES_OAEP_SHA_1"
     val RSAES_OAEP_SHA_256 = "RSAES_OAEP_SHA_256"
 
-    val values = IndexedSeq(RSAES_PKCS1_V1_5, RSAES_OAEP_SHA_1, RSAES_OAEP_SHA_256)
+    val values = js.Object.freeze(js.Array(RSAES_PKCS1_V1_5, RSAES_OAEP_SHA_1, RSAES_OAEP_SHA_256))
   }
 
   /**
@@ -294,13 +294,15 @@ package kms {
     val INSUFFICIENT_CLOUDHSM_HSMS = "INSUFFICIENT_CLOUDHSM_HSMS"
     val USER_LOCKED_OUT            = "USER_LOCKED_OUT"
 
-    val values = IndexedSeq(
-      INVALID_CREDENTIALS,
-      CLUSTER_NOT_FOUND,
-      NETWORK_ERRORS,
-      INTERNAL_ERROR,
-      INSUFFICIENT_CLOUDHSM_HSMS,
-      USER_LOCKED_OUT
+    val values = js.Object.freeze(
+      js.Array(
+        INVALID_CREDENTIALS,
+        CLUSTER_NOT_FOUND,
+        NETWORK_ERRORS,
+        INTERNAL_ERROR,
+        INSUFFICIENT_CLOUDHSM_HSMS,
+        USER_LOCKED_OUT
+      )
     )
   }
 
@@ -311,7 +313,7 @@ package kms {
     val DISCONNECTED  = "DISCONNECTED"
     val DISCONNECTING = "DISCONNECTING"
 
-    val values = IndexedSeq(CONNECTED, CONNECTING, FAILED, DISCONNECTED, DISCONNECTING)
+    val values = js.Object.freeze(js.Array(CONNECTED, CONNECTING, FAILED, DISCONNECTED, DISCONNECTING))
   }
 
   @js.native
@@ -518,7 +520,7 @@ package kms {
     val AES_256 = "AES_256"
     val AES_128 = "AES_128"
 
-    val values = IndexedSeq(AES_256, AES_128)
+    val values = js.Object.freeze(js.Array(AES_256, AES_128))
   }
 
   @js.native
@@ -850,7 +852,7 @@ package kms {
     val KEY_MATERIAL_EXPIRES         = "KEY_MATERIAL_EXPIRES"
     val KEY_MATERIAL_DOES_NOT_EXPIRE = "KEY_MATERIAL_DOES_NOT_EXPIRE"
 
-    val values = IndexedSeq(KEY_MATERIAL_EXPIRES, KEY_MATERIAL_DOES_NOT_EXPIRE)
+    val values = js.Object.freeze(js.Array(KEY_MATERIAL_EXPIRES, KEY_MATERIAL_DOES_NOT_EXPIRE))
   }
 
   @js.native
@@ -1182,16 +1184,18 @@ package kms {
     val RetireGrant                     = "RetireGrant"
     val DescribeKey                     = "DescribeKey"
 
-    val values = IndexedSeq(
-      Decrypt,
-      Encrypt,
-      GenerateDataKey,
-      GenerateDataKeyWithoutPlaintext,
-      ReEncryptFrom,
-      ReEncryptTo,
-      CreateGrant,
-      RetireGrant,
-      DescribeKey
+    val values = js.Object.freeze(
+      js.Array(
+        Decrypt,
+        Encrypt,
+        GenerateDataKey,
+        GenerateDataKeyWithoutPlaintext,
+        ReEncryptFrom,
+        ReEncryptTo,
+        CreateGrant,
+        RetireGrant,
+        DescribeKey
+      )
     )
   }
 
@@ -1261,7 +1265,7 @@ package kms {
     val AWS      = "AWS"
     val CUSTOMER = "CUSTOMER"
 
-    val values = IndexedSeq(AWS, CUSTOMER)
+    val values = js.Object.freeze(js.Array(AWS, CUSTOMER))
   }
 
   /**
@@ -1334,13 +1338,13 @@ package kms {
     val PendingImport   = "PendingImport"
     val Unavailable     = "Unavailable"
 
-    val values = IndexedSeq(Enabled, Disabled, PendingDeletion, PendingImport, Unavailable)
+    val values = js.Object.freeze(js.Array(Enabled, Disabled, PendingDeletion, PendingImport, Unavailable))
   }
 
   object KeyUsageTypeEnum {
     val ENCRYPT_DECRYPT = "ENCRYPT_DECRYPT"
 
-    val values = IndexedSeq(ENCRYPT_DECRYPT)
+    val values = js.Object.freeze(js.Array(ENCRYPT_DECRYPT))
   }
 
   @js.native
@@ -1584,7 +1588,7 @@ package kms {
     val EXTERNAL     = "EXTERNAL"
     val AWS_CLOUDHSM = "AWS_CLOUDHSM"
 
-    val values = IndexedSeq(AWS_KMS, EXTERNAL, AWS_CLOUDHSM)
+    val values = js.Object.freeze(js.Array(AWS_KMS, EXTERNAL, AWS_CLOUDHSM))
   }
 
   @js.native
@@ -1891,6 +1895,6 @@ package kms {
   object WrappingKeySpecEnum {
     val RSA_2048 = "RSA_2048"
 
-    val values = IndexedSeq(RSA_2048)
+    val values = js.Object.freeze(js.Array(RSA_2048))
   }
 }
diff --git a/services/lakeformation/src/main/scala/facade/amazonaws/services/LakeFormation.scala b/services/lakeformation/src/main/scala/facade/amazonaws/services/LakeFormation.scala
index 13cf5ebaa..a89583b75 100644
--- a/services/lakeformation/src/main/scala/facade/amazonaws/services/LakeFormation.scala
+++ b/services/lakeformation/src/main/scala/facade/amazonaws/services/LakeFormation.scala
@@ -260,7 +260,7 @@ package lakeformation {
     val IN           = "IN"
     val BETWEEN      = "BETWEEN"
 
-    val values = IndexedSeq(EQ, NE, LE, LT, GE, GT, CONTAINS, NOT_CONTAINS, BEGINS_WITH, IN, BETWEEN)
+    val values = js.Object.freeze(js.Array(EQ, NE, LE, LT, GE, GT, CONTAINS, NOT_CONTAINS, BEGINS_WITH, IN, BETWEEN))
   }
 
   /**
@@ -287,7 +287,7 @@ package lakeformation {
     val TABLE         = "TABLE"
     val DATA_LOCATION = "DATA_LOCATION"
 
-    val values = IndexedSeq(CATALOG, DATABASE, TABLE, DATA_LOCATION)
+    val values = js.Object.freeze(js.Array(CATALOG, DATABASE, TABLE, DATA_LOCATION))
   }
 
   /**
@@ -445,7 +445,7 @@ package lakeformation {
     val ROLE_ARN      = "ROLE_ARN"
     val LAST_MODIFIED = "LAST_MODIFIED"
 
-    val values = IndexedSeq(RESOURCE_ARN, ROLE_ARN, LAST_MODIFIED)
+    val values = js.Object.freeze(js.Array(RESOURCE_ARN, ROLE_ARN, LAST_MODIFIED))
   }
 
   /**
@@ -687,8 +687,9 @@ package lakeformation {
     val CREATE_TABLE         = "CREATE_TABLE"
     val DATA_LOCATION_ACCESS = "DATA_LOCATION_ACCESS"
 
-    val values =
-      IndexedSeq(ALL, SELECT, ALTER, DROP, DELETE, INSERT, CREATE_DATABASE, CREATE_TABLE, DATA_LOCATION_ACCESS)
+    val values = js.Object.freeze(
+      js.Array(ALL, SELECT, ALTER, DROP, DELETE, INSERT, CREATE_DATABASE, CREATE_TABLE, DATA_LOCATION_ACCESS)
+    )
   }
 
   /**
diff --git a/services/lambda/src/main/scala/facade/amazonaws/services/Lambda.scala b/services/lambda/src/main/scala/facade/amazonaws/services/Lambda.scala
index 4eefd393d..047cb26ad 100644
--- a/services/lambda/src/main/scala/facade/amazonaws/services/Lambda.scala
+++ b/services/lambda/src/main/scala/facade/amazonaws/services/Lambda.scala
@@ -791,7 +791,7 @@ package lambda {
     val LATEST       = "LATEST"
     val AT_TIMESTAMP = "AT_TIMESTAMP"
 
-    val values = IndexedSeq(TRIM_HORIZON, LATEST, AT_TIMESTAMP)
+    val values = js.Object.freeze(js.Array(TRIM_HORIZON, LATEST, AT_TIMESTAMP))
   }
 
   /**
@@ -920,7 +920,7 @@ package lambda {
   object FunctionVersionEnum {
     val ALL = "ALL"
 
-    val values = IndexedSeq(ALL)
+    val values = js.Object.freeze(js.Array(ALL))
   }
 
   @js.native
@@ -1267,7 +1267,7 @@ package lambda {
     val RequestResponse = "RequestResponse"
     val DryRun          = "DryRun"
 
-    val values = IndexedSeq(Event, RequestResponse, DryRun)
+    val values = js.Object.freeze(js.Array(Event, RequestResponse, DryRun))
   }
 
   @deprecated("Deprecated in AWS SDK", "forever")
@@ -1730,7 +1730,7 @@ package lambda {
     val None = "None"
     val Tail = "Tail"
 
-    val values = IndexedSeq(None, Tail)
+    val values = js.Object.freeze(js.Array(None, Tail))
   }
 
   @js.native
@@ -1914,23 +1914,25 @@ package lambda {
     val `ruby2.5`        = "ruby2.5"
     val provided         = "provided"
 
-    val values = IndexedSeq(
-      nodejs,
-      `nodejs4.3`,
-      `nodejs6.10`,
-      `nodejs8.10`,
-      `nodejs10.x`,
-      java8,
-      `python2.7`,
-      `python3.6`,
-      `python3.7`,
-      `dotnetcore1.0`,
-      `dotnetcore2.0`,
-      `dotnetcore2.1`,
-      `nodejs4.3-edge`,
-      `go1.x`,
-      `ruby2.5`,
-      provided
+    val values = js.Object.freeze(
+      js.Array(
+        nodejs,
+        `nodejs4.3`,
+        `nodejs6.10`,
+        `nodejs8.10`,
+        `nodejs10.x`,
+        java8,
+        `python2.7`,
+        `python3.6`,
+        `python3.7`,
+        `dotnetcore1.0`,
+        `dotnetcore2.0`,
+        `dotnetcore2.1`,
+        `nodejs4.3-edge`,
+        `go1.x`,
+        `ruby2.5`,
+        provided
+      )
     )
   }
 
@@ -1994,7 +1996,7 @@ package lambda {
     val Active      = "Active"
     val PassThrough = "PassThrough"
 
-    val values = IndexedSeq(Active, PassThrough)
+    val values = js.Object.freeze(js.Array(Active, PassThrough))
   }
 
   @js.native
diff --git a/services/lexmodelbuildingservice/src/main/scala/facade/amazonaws/services/LexModelBuildingService.scala b/services/lexmodelbuildingservice/src/main/scala/facade/amazonaws/services/LexModelBuildingService.scala
index 2222f6af5..e45241189 100644
--- a/services/lexmodelbuildingservice/src/main/scala/facade/amazonaws/services/LexModelBuildingService.scala
+++ b/services/lexmodelbuildingservice/src/main/scala/facade/amazonaws/services/LexModelBuildingService.scala
@@ -374,7 +374,7 @@ package lexmodelbuildingservice {
     val CREATED     = "CREATED"
     val FAILED      = "FAILED"
 
-    val values = IndexedSeq(IN_PROGRESS, CREATED, FAILED)
+    val values = js.Object.freeze(js.Array(IN_PROGRESS, CREATED, FAILED))
   }
 
   object ChannelTypeEnum {
@@ -383,7 +383,7 @@ package lexmodelbuildingservice {
     val `Twilio-Sms` = "Twilio-Sms"
     val Kik          = "Kik"
 
-    val values = IndexedSeq(Facebook, Slack, `Twilio-Sms`, Kik)
+    val values = js.Object.freeze(js.Array(Facebook, Slack, `Twilio-Sms`, Kik))
   }
 
   /**
@@ -414,7 +414,7 @@ package lexmodelbuildingservice {
     val SSML          = "SSML"
     val CustomPayload = "CustomPayload"
 
-    val values = IndexedSeq(PlainText, SSML, CustomPayload)
+    val values = js.Object.freeze(js.Array(PlainText, SSML, CustomPayload))
   }
 
   @js.native
@@ -833,14 +833,14 @@ package lexmodelbuildingservice {
     val READY       = "READY"
     val FAILED      = "FAILED"
 
-    val values = IndexedSeq(IN_PROGRESS, READY, FAILED)
+    val values = js.Object.freeze(js.Array(IN_PROGRESS, READY, FAILED))
   }
 
   object ExportTypeEnum {
     val ALEXA_SKILLS_KIT = "ALEXA_SKILLS_KIT"
     val LEX              = "LEX"
 
-    val values = IndexedSeq(ALEXA_SKILLS_KIT, LEX)
+    val values = js.Object.freeze(js.Array(ALEXA_SKILLS_KIT, LEX))
   }
 
   /**
@@ -896,7 +896,7 @@ package lexmodelbuildingservice {
     val ReturnIntent = "ReturnIntent"
     val CodeHook     = "CodeHook"
 
-    val values = IndexedSeq(ReturnIntent, CodeHook)
+    val values = js.Object.freeze(js.Array(ReturnIntent, CodeHook))
   }
 
   @js.native
@@ -1832,7 +1832,7 @@ package lexmodelbuildingservice {
     val COMPLETE    = "COMPLETE"
     val FAILED      = "FAILED"
 
-    val values = IndexedSeq(IN_PROGRESS, COMPLETE, FAILED)
+    val values = js.Object.freeze(js.Array(IN_PROGRESS, COMPLETE, FAILED))
   }
 
   /**
@@ -1893,14 +1893,14 @@ package lexmodelbuildingservice {
     val `en-GB` = "en-GB"
     val `de-DE` = "de-DE"
 
-    val values = IndexedSeq(`en-US`, `en-GB`, `de-DE`)
+    val values = js.Object.freeze(js.Array(`en-US`, `en-GB`, `de-DE`))
   }
 
   object MergeStrategyEnum {
     val OVERWRITE_LATEST = "OVERWRITE_LATEST"
     val FAIL_ON_CONFLICT = "FAIL_ON_CONFLICT"
 
-    val values = IndexedSeq(OVERWRITE_LATEST, FAIL_ON_CONFLICT)
+    val values = js.Object.freeze(js.Array(OVERWRITE_LATEST, FAIL_ON_CONFLICT))
   }
 
   /**
@@ -1933,7 +1933,7 @@ package lexmodelbuildingservice {
     val SAVE  = "SAVE"
     val BUILD = "BUILD"
 
-    val values = IndexedSeq(SAVE, BUILD)
+    val values = js.Object.freeze(js.Array(SAVE, BUILD))
   }
 
   /**
@@ -2323,7 +2323,7 @@ package lexmodelbuildingservice {
     val INTENT    = "INTENT"
     val SLOT_TYPE = "SLOT_TYPE"
 
-    val values = IndexedSeq(BOT, INTENT, SLOT_TYPE)
+    val values = js.Object.freeze(js.Array(BOT, INTENT, SLOT_TYPE))
   }
 
   /**
@@ -2374,7 +2374,7 @@ package lexmodelbuildingservice {
     val Required = "Required"
     val Optional = "Optional"
 
-    val values = IndexedSeq(Required, Optional)
+    val values = js.Object.freeze(js.Array(Required, Optional))
   }
 
   /**
@@ -2411,7 +2411,7 @@ package lexmodelbuildingservice {
     val ORIGINAL_VALUE = "ORIGINAL_VALUE"
     val TOP_RESOLUTION = "TOP_RESOLUTION"
 
-    val values = IndexedSeq(ORIGINAL_VALUE, TOP_RESOLUTION)
+    val values = js.Object.freeze(js.Array(ORIGINAL_VALUE, TOP_RESOLUTION))
   }
 
   @js.native
@@ -2497,14 +2497,14 @@ package lexmodelbuildingservice {
     val FAILED              = "FAILED"
     val NOT_BUILT           = "NOT_BUILT"
 
-    val values = IndexedSeq(BUILDING, READY, READY_BASIC_TESTING, FAILED, NOT_BUILT)
+    val values = js.Object.freeze(js.Array(BUILDING, READY, READY_BASIC_TESTING, FAILED, NOT_BUILT))
   }
 
   object StatusTypeEnum {
     val Detected = "Detected"
     val Missed   = "Missed"
 
-    val values = IndexedSeq(Detected, Missed)
+    val values = js.Object.freeze(js.Array(Detected, Missed))
   }
 
   /**
diff --git a/services/lexruntime/src/main/scala/facade/amazonaws/services/LexRuntime.scala b/services/lexruntime/src/main/scala/facade/amazonaws/services/LexRuntime.scala
index fcce37301..cb6d308b5 100644
--- a/services/lexruntime/src/main/scala/facade/amazonaws/services/LexRuntime.scala
+++ b/services/lexruntime/src/main/scala/facade/amazonaws/services/LexRuntime.scala
@@ -88,13 +88,13 @@ package lexruntime {
     val Confirmed = "Confirmed"
     val Denied    = "Denied"
 
-    val values = IndexedSeq(None, Confirmed, Denied)
+    val values = js.Object.freeze(js.Array(None, Confirmed, Denied))
   }
 
   object ContentTypeEnum {
     val `application/vnd.amazonaws.card.generic` = "application/vnd.amazonaws.card.generic"
 
-    val values = IndexedSeq(`application/vnd.amazonaws.card.generic`)
+    val values = js.Object.freeze(js.Array(`application/vnd.amazonaws.card.generic`))
   }
 
   @js.native
@@ -189,7 +189,7 @@ package lexruntime {
     val Close         = "Close"
     val Delegate      = "Delegate"
 
-    val values = IndexedSeq(ElicitIntent, ConfirmIntent, ElicitSlot, Close, Delegate)
+    val values = js.Object.freeze(js.Array(ElicitIntent, ConfirmIntent, ElicitSlot, Close, Delegate))
   }
 
   object DialogStateEnum {
@@ -200,7 +200,8 @@ package lexruntime {
     val ReadyForFulfillment = "ReadyForFulfillment"
     val Failed              = "Failed"
 
-    val values = IndexedSeq(ElicitIntent, ConfirmIntent, ElicitSlot, Fulfilled, ReadyForFulfillment, Failed)
+    val values =
+      js.Object.freeze(js.Array(ElicitIntent, ConfirmIntent, ElicitSlot, Fulfilled, ReadyForFulfillment, Failed))
   }
 
   object FulfillmentStateEnum {
@@ -208,7 +209,7 @@ package lexruntime {
     val Failed              = "Failed"
     val ReadyForFulfillment = "ReadyForFulfillment"
 
-    val values = IndexedSeq(Fulfilled, Failed, ReadyForFulfillment)
+    val values = js.Object.freeze(js.Array(Fulfilled, Failed, ReadyForFulfillment))
   }
 
   /**
@@ -329,7 +330,7 @@ package lexruntime {
     val SSML          = "SSML"
     val Composite     = "Composite"
 
-    val values = IndexedSeq(PlainText, CustomPayload, SSML, Composite)
+    val values = js.Object.freeze(js.Array(PlainText, CustomPayload, SSML, Composite))
   }
 
   @js.native
diff --git a/services/licensemanager/src/main/scala/facade/amazonaws/services/LicenseManager.scala b/services/licensemanager/src/main/scala/facade/amazonaws/services/LicenseManager.scala
index b54b36b2e..aa2b9b106 100644
--- a/services/licensemanager/src/main/scala/facade/amazonaws/services/LicenseManager.scala
+++ b/services/licensemanager/src/main/scala/facade/amazonaws/services/LicenseManager.scala
@@ -381,7 +381,7 @@ package licensemanager {
     val BEGINS_WITH = "BEGINS_WITH"
     val CONTAINS    = "CONTAINS"
 
-    val values = IndexedSeq(EQUALS, NOT_EQUALS, BEGINS_WITH, CONTAINS)
+    val values = js.Object.freeze(js.Array(EQUALS, NOT_EQUALS, BEGINS_WITH, CONTAINS))
   }
 
   /**
@@ -469,7 +469,7 @@ package licensemanager {
     val AVAILABLE = "AVAILABLE"
     val DISABLED  = "DISABLED"
 
-    val values = IndexedSeq(AVAILABLE, DISABLED)
+    val values = js.Object.freeze(js.Array(AVAILABLE, DISABLED))
   }
 
   /**
@@ -511,7 +511,7 @@ package licensemanager {
     val Core     = "Core"
     val Socket   = "Socket"
 
-    val values = IndexedSeq(vCPU, Instance, Core, Socket)
+    val values = js.Object.freeze(js.Array(vCPU, Instance, Core, Socket))
   }
 
   /**
@@ -856,7 +856,7 @@ package licensemanager {
     val EC2_HOST     = "EC2_HOST"
     val EC2_AMI      = "EC2_AMI"
 
-    val values = IndexedSeq(EC2_INSTANCE, EC2_HOST, EC2_AMI)
+    val values = js.Object.freeze(js.Array(EC2_INSTANCE, EC2_HOST, EC2_AMI))
   }
 
   /**
diff --git a/services/lightsail/src/main/scala/facade/amazonaws/services/Lightsail.scala b/services/lightsail/src/main/scala/facade/amazonaws/services/Lightsail.scala
index 9e4a70d1e..8f4181cad 100644
--- a/services/lightsail/src/main/scala/facade/amazonaws/services/Lightsail.scala
+++ b/services/lightsail/src/main/scala/facade/amazonaws/services/Lightsail.scala
@@ -524,7 +524,7 @@ package lightsail {
     val inbound  = "inbound"
     val outbound = "outbound"
 
-    val values = IndexedSeq(inbound, outbound)
+    val values = js.Object.freeze(js.Array(inbound, outbound))
   }
 
   @js.native
@@ -778,7 +778,7 @@ package lightsail {
     val os  = "os"
     val app = "app"
 
-    val values = IndexedSeq(os, app)
+    val values = js.Object.freeze(js.Array(os, app))
   }
 
   /**
@@ -931,7 +931,7 @@ package lightsail {
   object CloudFormationStackRecordSourceTypeEnum {
     val ExportSnapshotRecord = "ExportSnapshotRecord"
 
-    val values = IndexedSeq(ExportSnapshotRecord)
+    val values = js.Object.freeze(js.Array(ExportSnapshotRecord))
   }
 
   @js.native
@@ -2355,7 +2355,7 @@ package lightsail {
     val error     = "error"
     val unknown   = "unknown"
 
-    val values = IndexedSeq(pending, completed, error, unknown)
+    val values = js.Object.freeze(js.Array(pending, completed, error, unknown))
   }
 
   object DiskStateEnum {
@@ -2365,7 +2365,7 @@ package lightsail {
     val `in-use`  = "in-use"
     val unknown   = "unknown"
 
-    val values = IndexedSeq(pending, error, available, `in-use`, unknown)
+    val values = js.Object.freeze(js.Array(pending, error, available, `in-use`, unknown))
   }
 
   /**
@@ -2552,7 +2552,7 @@ package lightsail {
     val InstanceSnapshot = "InstanceSnapshot"
     val DiskSnapshot     = "DiskSnapshot"
 
-    val values = IndexedSeq(InstanceSnapshot, DiskSnapshot)
+    val values = js.Object.freeze(js.Array(InstanceSnapshot, DiskSnapshot))
   }
 
   @js.native
@@ -4299,7 +4299,7 @@ package lightsail {
     val ssh = "ssh"
     val rdp = "rdp"
 
-    val values = IndexedSeq(ssh, rdp)
+    val values = js.Object.freeze(js.Array(ssh, rdp))
   }
 
   /**
@@ -4371,18 +4371,20 @@ package lightsail {
     val `Instance.InvalidState`             = "Instance.InvalidState"
     val `Instance.IpUnusable`               = "Instance.IpUnusable"
 
-    val values = IndexedSeq(
-      `Lb.RegistrationInProgress`,
-      `Lb.InitialHealthChecking`,
-      `Lb.InternalError`,
-      `Instance.ResponseCodeMismatch`,
-      `Instance.Timeout`,
-      `Instance.FailedHealthChecks`,
-      `Instance.NotRegistered`,
-      `Instance.NotInUse`,
-      `Instance.DeregistrationInProgress`,
-      `Instance.InvalidState`,
-      `Instance.IpUnusable`
+    val values = js.Object.freeze(
+      js.Array(
+        `Lb.RegistrationInProgress`,
+        `Lb.InitialHealthChecking`,
+        `Lb.InternalError`,
+        `Instance.ResponseCodeMismatch`,
+        `Instance.Timeout`,
+        `Instance.FailedHealthChecks`,
+        `Instance.NotRegistered`,
+        `Instance.NotInUse`,
+        `Instance.DeregistrationInProgress`,
+        `Instance.InvalidState`,
+        `Instance.IpUnusable`
+      )
     )
   }
 
@@ -4394,7 +4396,7 @@ package lightsail {
     val draining    = "draining"
     val unavailable = "unavailable"
 
-    val values = IndexedSeq(initial, healthy, unhealthy, unused, draining, unavailable)
+    val values = js.Object.freeze(js.Array(initial, healthy, unhealthy, unused, draining, unavailable))
   }
 
   /**
@@ -4429,13 +4431,15 @@ package lightsail {
     val StatusCheckFailed_Instance = "StatusCheckFailed_Instance"
     val StatusCheckFailed_System   = "StatusCheckFailed_System"
 
-    val values = IndexedSeq(
-      CPUUtilization,
-      NetworkIn,
-      NetworkOut,
-      StatusCheckFailed,
-      StatusCheckFailed_Instance,
-      StatusCheckFailed_System
+    val values = js.Object.freeze(
+      js.Array(
+        CPUUtilization,
+        NetworkIn,
+        NetworkOut,
+        StatusCheckFailed,
+        StatusCheckFailed_Instance,
+        StatusCheckFailed_System
+      )
     )
   }
 
@@ -4464,7 +4468,7 @@ package lightsail {
     val LINUX_UNIX = "LINUX_UNIX"
     val WINDOWS    = "WINDOWS"
 
-    val values = IndexedSeq(LINUX_UNIX, WINDOWS)
+    val values = js.Object.freeze(js.Array(LINUX_UNIX, WINDOWS))
   }
 
   /**
@@ -4619,7 +4623,7 @@ package lightsail {
     val error     = "error"
     val available = "available"
 
-    val values = IndexedSeq(pending, error, available)
+    val values = js.Object.freeze(js.Array(pending, error, available))
   }
 
   /**
@@ -4777,7 +4781,8 @@ package lightsail {
     val SessionStickinessEnabled                   = "SessionStickinessEnabled"
     val SessionStickiness_LB_CookieDurationSeconds = "SessionStickiness_LB_CookieDurationSeconds"
 
-    val values = IndexedSeq(HealthCheckPath, SessionStickinessEnabled, SessionStickiness_LB_CookieDurationSeconds)
+    val values =
+      js.Object.freeze(js.Array(HealthCheckPath, SessionStickinessEnabled, SessionStickiness_LB_CookieDurationSeconds))
   }
 
   object LoadBalancerMetricNameEnum {
@@ -4794,19 +4799,21 @@ package lightsail {
     val RejectedConnectionCount        = "RejectedConnectionCount"
     val RequestCount                   = "RequestCount"
 
-    val values = IndexedSeq(
-      ClientTLSNegotiationErrorCount,
-      HealthyHostCount,
-      UnhealthyHostCount,
-      HTTPCode_LB_4XX_Count,
-      HTTPCode_LB_5XX_Count,
-      HTTPCode_Instance_2XX_Count,
-      HTTPCode_Instance_3XX_Count,
-      HTTPCode_Instance_4XX_Count,
-      HTTPCode_Instance_5XX_Count,
-      InstanceResponseTime,
-      RejectedConnectionCount,
-      RequestCount
+    val values = js.Object.freeze(
+      js.Array(
+        ClientTLSNegotiationErrorCount,
+        HealthyHostCount,
+        UnhealthyHostCount,
+        HTTPCode_LB_4XX_Count,
+        HTTPCode_LB_5XX_Count,
+        HTTPCode_Instance_2XX_Count,
+        HTTPCode_Instance_3XX_Count,
+        HTTPCode_Instance_4XX_Count,
+        HTTPCode_Instance_5XX_Count,
+        InstanceResponseTime,
+        RejectedConnectionCount,
+        RequestCount
+      )
     )
   }
 
@@ -4814,7 +4821,7 @@ package lightsail {
     val HTTP_HTTPS = "HTTP_HTTPS"
     val HTTP       = "HTTP"
 
-    val values = IndexedSeq(HTTP_HTTPS, HTTP)
+    val values = js.Object.freeze(js.Array(HTTP_HTTPS, HTTP))
   }
 
   object LoadBalancerStateEnum {
@@ -4824,7 +4831,7 @@ package lightsail {
     val failed          = "failed"
     val unknown         = "unknown"
 
-    val values = IndexedSeq(active, provisioning, active_impaired, failed, unknown)
+    val values = js.Object.freeze(js.Array(active, provisioning, active_impaired, failed, unknown))
   }
 
   /**
@@ -4923,7 +4930,7 @@ package lightsail {
     val FAILED             = "FAILED"
     val SUCCESS            = "SUCCESS"
 
-    val values = IndexedSeq(PENDING_VALIDATION, FAILED, SUCCESS)
+    val values = js.Object.freeze(js.Array(PENDING_VALIDATION, FAILED, SUCCESS))
   }
 
   /**
@@ -4984,12 +4991,14 @@ package lightsail {
     val INVALID_PUBLIC_DOMAIN            = "INVALID_PUBLIC_DOMAIN"
     val OTHER                            = "OTHER"
 
-    val values = IndexedSeq(
-      NO_AVAILABLE_CONTACTS,
-      ADDITIONAL_VERIFICATION_REQUIRED,
-      DOMAIN_NOT_ALLOWED,
-      INVALID_PUBLIC_DOMAIN,
-      OTHER
+    val values = js.Object.freeze(
+      js.Array(
+        NO_AVAILABLE_CONTACTS,
+        ADDITIONAL_VERIFICATION_REQUIRED,
+        DOMAIN_NOT_ALLOWED,
+        INVALID_PUBLIC_DOMAIN,
+        OTHER
+      )
     )
   }
 
@@ -4999,7 +5008,7 @@ package lightsail {
     val SUCCESS              = "SUCCESS"
     val FAILED               = "FAILED"
 
-    val values = IndexedSeq(PENDING_AUTO_RENEWAL, PENDING_VALIDATION, SUCCESS, FAILED)
+    val values = js.Object.freeze(js.Array(PENDING_AUTO_RENEWAL, PENDING_VALIDATION, SUCCESS, FAILED))
   }
 
   /**
@@ -5035,17 +5044,19 @@ package lightsail {
     val PRIVILEGE_WITHDRAWN    = "PRIVILEGE_WITHDRAWN"
     val A_A_COMPROMISE         = "A_A_COMPROMISE"
 
-    val values = IndexedSeq(
-      UNSPECIFIED,
-      KEY_COMPROMISE,
-      CA_COMPROMISE,
-      AFFILIATION_CHANGED,
-      SUPERCEDED,
-      CESSATION_OF_OPERATION,
-      CERTIFICATE_HOLD,
-      REMOVE_FROM_CRL,
-      PRIVILEGE_WITHDRAWN,
-      A_A_COMPROMISE
+    val values = js.Object.freeze(
+      js.Array(
+        UNSPECIFIED,
+        KEY_COMPROMISE,
+        CA_COMPROMISE,
+        AFFILIATION_CHANGED,
+        SUPERCEDED,
+        CESSATION_OF_OPERATION,
+        CERTIFICATE_HOLD,
+        REMOVE_FROM_CRL,
+        PRIVILEGE_WITHDRAWN,
+        A_A_COMPROMISE
+      )
     )
   }
 
@@ -5059,8 +5070,9 @@ package lightsail {
     val FAILED               = "FAILED"
     val UNKNOWN              = "UNKNOWN"
 
-    val values =
-      IndexedSeq(PENDING_VALIDATION, ISSUED, INACTIVE, EXPIRED, VALIDATION_TIMED_OUT, REVOKED, FAILED, UNKNOWN)
+    val values = js.Object.freeze(
+      js.Array(PENDING_VALIDATION, ISSUED, INACTIVE, EXPIRED, VALIDATION_TIMED_OUT, REVOKED, FAILED, UNKNOWN)
+    )
   }
 
   /**
@@ -5148,7 +5160,7 @@ package lightsail {
     val Average     = "Average"
     val SampleCount = "SampleCount"
 
-    val values = IndexedSeq(Minimum, Maximum, Sum, Average, SampleCount)
+    val values = js.Object.freeze(js.Array(Minimum, Maximum, Sum, Average, SampleCount))
   }
 
   object MetricUnitEnum {
@@ -5180,34 +5192,36 @@ package lightsail {
     val `Count/Second`     = "Count/Second"
     val None               = "None"
 
-    val values = IndexedSeq(
-      Seconds,
-      Microseconds,
-      Milliseconds,
-      Bytes,
-      Kilobytes,
-      Megabytes,
-      Gigabytes,
-      Terabytes,
-      Bits,
-      Kilobits,
-      Megabits,
-      Gigabits,
-      Terabits,
-      Percent,
-      Count,
-      `Bytes/Second`,
-      `Kilobytes/Second`,
-      `Megabytes/Second`,
-      `Gigabytes/Second`,
-      `Terabytes/Second`,
-      `Bits/Second`,
-      `Kilobits/Second`,
-      `Megabits/Second`,
-      `Gigabits/Second`,
-      `Terabits/Second`,
-      `Count/Second`,
-      None
+    val values = js.Object.freeze(
+      js.Array(
+        Seconds,
+        Microseconds,
+        Milliseconds,
+        Bytes,
+        Kilobytes,
+        Megabytes,
+        Gigabytes,
+        Terabytes,
+        Bits,
+        Kilobits,
+        Megabits,
+        Gigabits,
+        Terabits,
+        Percent,
+        Count,
+        `Bytes/Second`,
+        `Kilobytes/Second`,
+        `Megabytes/Second`,
+        `Gigabytes/Second`,
+        `Terabytes/Second`,
+        `Bits/Second`,
+        `Kilobits/Second`,
+        `Megabits/Second`,
+        `Gigabits/Second`,
+        `Terabits/Second`,
+        `Count/Second`,
+        None
+      )
     )
   }
 
@@ -5234,7 +5248,7 @@ package lightsail {
     val all = "all"
     val udp = "udp"
 
-    val values = IndexedSeq(tcp, all, udp)
+    val values = js.Object.freeze(js.Array(tcp, all, udp))
   }
 
   @js.native
@@ -5330,7 +5344,7 @@ package lightsail {
     val Completed  = "Completed"
     val Succeeded  = "Succeeded"
 
-    val values = IndexedSeq(NotStarted, Started, Failed, Completed, Succeeded)
+    val values = js.Object.freeze(js.Array(NotStarted, Started, Failed, Completed, Succeeded))
   }
 
   object OperationTypeEnum {
@@ -5380,52 +5394,54 @@ package lightsail {
     val RebootRelationalDatabase             = "RebootRelationalDatabase"
     val StopRelationalDatabase               = "StopRelationalDatabase"
 
-    val values = IndexedSeq(
-      DeleteKnownHostKeys,
-      DeleteInstance,
-      CreateInstance,
-      StopInstance,
-      StartInstance,
-      RebootInstance,
-      OpenInstancePublicPorts,
-      PutInstancePublicPorts,
-      CloseInstancePublicPorts,
-      AllocateStaticIp,
-      ReleaseStaticIp,
-      AttachStaticIp,
-      DetachStaticIp,
-      UpdateDomainEntry,
-      DeleteDomainEntry,
-      CreateDomain,
-      DeleteDomain,
-      CreateInstanceSnapshot,
-      DeleteInstanceSnapshot,
-      CreateInstancesFromSnapshot,
-      CreateLoadBalancer,
-      DeleteLoadBalancer,
-      AttachInstancesToLoadBalancer,
-      DetachInstancesFromLoadBalancer,
-      UpdateLoadBalancerAttribute,
-      CreateLoadBalancerTlsCertificate,
-      DeleteLoadBalancerTlsCertificate,
-      AttachLoadBalancerTlsCertificate,
-      CreateDisk,
-      DeleteDisk,
-      AttachDisk,
-      DetachDisk,
-      CreateDiskSnapshot,
-      DeleteDiskSnapshot,
-      CreateDiskFromSnapshot,
-      CreateRelationalDatabase,
-      UpdateRelationalDatabase,
-      DeleteRelationalDatabase,
-      CreateRelationalDatabaseFromSnapshot,
-      CreateRelationalDatabaseSnapshot,
-      DeleteRelationalDatabaseSnapshot,
-      UpdateRelationalDatabaseParameters,
-      StartRelationalDatabase,
-      RebootRelationalDatabase,
-      StopRelationalDatabase
+    val values = js.Object.freeze(
+      js.Array(
+        DeleteKnownHostKeys,
+        DeleteInstance,
+        CreateInstance,
+        StopInstance,
+        StartInstance,
+        RebootInstance,
+        OpenInstancePublicPorts,
+        PutInstancePublicPorts,
+        CloseInstancePublicPorts,
+        AllocateStaticIp,
+        ReleaseStaticIp,
+        AttachStaticIp,
+        DetachStaticIp,
+        UpdateDomainEntry,
+        DeleteDomainEntry,
+        CreateDomain,
+        DeleteDomain,
+        CreateInstanceSnapshot,
+        DeleteInstanceSnapshot,
+        CreateInstancesFromSnapshot,
+        CreateLoadBalancer,
+        DeleteLoadBalancer,
+        AttachInstancesToLoadBalancer,
+        DetachInstancesFromLoadBalancer,
+        UpdateLoadBalancerAttribute,
+        CreateLoadBalancerTlsCertificate,
+        DeleteLoadBalancerTlsCertificate,
+        AttachLoadBalancerTlsCertificate,
+        CreateDisk,
+        DeleteDisk,
+        AttachDisk,
+        DetachDisk,
+        CreateDiskSnapshot,
+        DeleteDiskSnapshot,
+        CreateDiskFromSnapshot,
+        CreateRelationalDatabase,
+        UpdateRelationalDatabase,
+        DeleteRelationalDatabase,
+        CreateRelationalDatabaseFromSnapshot,
+        CreateRelationalDatabaseSnapshot,
+        DeleteRelationalDatabaseSnapshot,
+        UpdateRelationalDatabaseParameters,
+        StartRelationalDatabase,
+        RebootRelationalDatabase,
+        StopRelationalDatabase
+      )
     )
   }
 
@@ -5529,7 +5545,7 @@ package lightsail {
     val Public  = "Public"
     val Private = "Private"
 
-    val values = IndexedSeq(Public, Private)
+    val values = js.Object.freeze(js.Array(Public, Private))
   }
 
   /**
@@ -5562,14 +5578,14 @@ package lightsail {
     val NONE     = "NONE"
     val CLOSED   = "CLOSED"
 
-    val values = IndexedSeq(DEFAULT, INSTANCE, NONE, CLOSED)
+    val values = js.Object.freeze(js.Array(DEFAULT, INSTANCE, NONE, CLOSED))
   }
 
   object PortStateEnum {
     val open   = "open"
     val closed = "closed"
 
-    val values = IndexedSeq(open, closed)
+    val values = js.Object.freeze(js.Array(open, closed))
   }
 
   @js.native
@@ -5676,7 +5692,7 @@ package lightsail {
     val Succeeded = "Succeeded"
     val Failed    = "Failed"
 
-    val values = IndexedSeq(Started, Succeeded, Failed)
+    val values = js.Object.freeze(js.Array(Started, Succeeded, Failed))
   }
 
   /**
@@ -5730,21 +5746,23 @@ package lightsail {
     val `ap-northeast-1` = "ap-northeast-1"
     val `ap-northeast-2` = "ap-northeast-2"
 
-    val values = IndexedSeq(
-      `us-east-1`,
-      `us-east-2`,
-      `us-west-1`,
-      `us-west-2`,
-      `eu-west-1`,
-      `eu-west-2`,
-      `eu-west-3`,
-      `eu-central-1`,
-      `ca-central-1`,
-      `ap-south-1`,
-      `ap-southeast-1`,
-      `ap-southeast-2`,
-      `ap-northeast-1`,
-      `ap-northeast-2`
+    val values = js.Object.freeze(
+      js.Array(
+        `us-east-1`,
+        `us-east-2`,
+        `us-west-1`,
+        `us-west-2`,
+        `eu-west-1`,
+        `eu-west-2`,
+        `eu-west-3`,
+        `eu-central-1`,
+        `ca-central-1`,
+        `ap-south-1`,
+        `ap-southeast-1`,
+        `ap-southeast-2`,
+        `ap-northeast-1`,
+        `ap-northeast-2`
+      )
     )
   }
 
@@ -5939,7 +5957,7 @@ package lightsail {
   object RelationalDatabaseEngineEnum {
     val mysql = "mysql"
 
-    val values = IndexedSeq(mysql)
+    val values = js.Object.freeze(js.Array(mysql))
   }
 
   /**
@@ -6001,13 +6019,15 @@ package lightsail {
     val NetworkReceiveThroughput  = "NetworkReceiveThroughput"
     val NetworkTransmitThroughput = "NetworkTransmitThroughput"
 
-    val values = IndexedSeq(
-      CPUUtilization,
-      DatabaseConnections,
-      DiskQueueDepth,
-      FreeStorageSpace,
-      NetworkReceiveThroughput,
-      NetworkTransmitThroughput
+    val values = js.Object.freeze(
+      js.Array(
+        CPUUtilization,
+        DatabaseConnections,
+        DiskQueueDepth,
+        FreeStorageSpace,
+        NetworkReceiveThroughput,
+        NetworkTransmitThroughput
+      )
     )
   }
 
@@ -6055,7 +6075,7 @@ package lightsail {
     val PREVIOUS = "PREVIOUS"
     val PENDING  = "PENDING"
 
-    val values = IndexedSeq(CURRENT, PREVIOUS, PENDING)
+    val values = js.Object.freeze(js.Array(CURRENT, PREVIOUS, PENDING))
   }
 
   /**
@@ -6191,21 +6211,23 @@ package lightsail {
     val ExportSnapshotRecord       = "ExportSnapshotRecord"
     val CloudFormationStackRecord  = "CloudFormationStackRecord"
 
-    val values = IndexedSeq(
-      Instance,
-      StaticIp,
-      KeyPair,
-      InstanceSnapshot,
-      Domain,
-      PeeredVpc,
-      LoadBalancer,
-      LoadBalancerTlsCertificate,
-      Disk,
-      DiskSnapshot,
-      RelationalDatabase,
-      RelationalDatabaseSnapshot,
-      ExportSnapshotRecord,
-      CloudFormationStackRecord
+    val values = js.Object.freeze(
+      js.Array(
+        Instance,
+        StaticIp,
+        KeyPair,
+        InstanceSnapshot,
+        Domain,
+        PeeredVpc,
+        LoadBalancer,
+        LoadBalancerTlsCertificate,
+        Disk,
+        DiskSnapshot,
+        RelationalDatabase,
+        RelationalDatabaseSnapshot,
+        ExportSnapshotRecord,
+        CloudFormationStackRecord
+      )
     )
   }
 
diff --git a/services/machinelearning/src/main/scala/facade/amazonaws/services/MachineLearning.scala b/services/machinelearning/src/main/scala/facade/amazonaws/services/MachineLearning.scala
index d3011a01c..1b2802188 100644
--- a/services/machinelearning/src/main/scala/facade/amazonaws/services/MachineLearning.scala
+++ b/services/machinelearning/src/main/scala/facade/amazonaws/services/MachineLearning.scala
@@ -232,7 +232,7 @@ package machinelearning {
   object AlgorithmEnum {
     val sgd = "sgd"
 
-    val values = IndexedSeq(sgd)
+    val values = js.Object.freeze(js.Array(sgd))
   }
 
   /**
@@ -319,7 +319,8 @@ package machinelearning {
     val DataSourceId  = "DataSourceId"
     val DataURI       = "DataURI"
 
-    val values = IndexedSeq(CreatedAt, LastUpdatedAt, Status, Name, IAMUser, MLModelId, DataSourceId, DataURI)
+    val values =
+      js.Object.freeze(js.Array(CreatedAt, LastUpdatedAt, Status, Name, IAMUser, MLModelId, DataSourceId, DataURI))
   }
 
   @js.native
@@ -738,7 +739,7 @@ package machinelearning {
     val DataLocationS3 = "DataLocationS3"
     val IAMUser        = "IAMUser"
 
-    val values = IndexedSeq(CreatedAt, LastUpdatedAt, Status, Name, DataLocationS3, IAMUser)
+    val values = js.Object.freeze(js.Array(CreatedAt, LastUpdatedAt, Status, Name, DataLocationS3, IAMUser))
   }
 
   @js.native
@@ -1282,7 +1283,7 @@ package machinelearning {
     val PredictiveModelType = "PredictiveModelType"
     val Algorithm           = "Algorithm"
 
-    val values = IndexedSeq(PredictiveModelType, Algorithm)
+    val values = js.Object.freeze(js.Array(PredictiveModelType, Algorithm))
   }
 
   /**
@@ -1300,7 +1301,7 @@ package machinelearning {
     val COMPLETED  = "COMPLETED"
     val DELETED    = "DELETED"
 
-    val values = IndexedSeq(PENDING, INPROGRESS, FAILED, COMPLETED, DELETED)
+    val values = js.Object.freeze(js.Array(PENDING, INPROGRESS, FAILED, COMPLETED, DELETED))
   }
 
   /**
@@ -1381,7 +1382,8 @@ package machinelearning {
     val DataSourceId  = "DataSourceId"
     val DataURI       = "DataURI"
 
-    val values = IndexedSeq(CreatedAt, LastUpdatedAt, Status, Name, IAMUser, MLModelId, DataSourceId, DataURI)
+    val values =
+      js.Object.freeze(js.Array(CreatedAt, LastUpdatedAt, Status, Name, IAMUser, MLModelId, DataSourceId, DataURI))
   }
 
   @js.native
@@ -1863,17 +1865,19 @@ package machinelearning {
     val Algorithm              = "Algorithm"
     val TrainingDataURI        = "TrainingDataURI"
 
-    val values = IndexedSeq(
-      CreatedAt,
-      LastUpdatedAt,
-      Status,
-      Name,
-      IAMUser,
-      TrainingDataSourceId,
-      RealtimeEndpointStatus,
-      MLModelType,
-      Algorithm,
-      TrainingDataURI
+    val values = js.Object.freeze(
+      js.Array(
+        CreatedAt,
+        LastUpdatedAt,
+        Status,
+        Name,
+        IAMUser,
+        TrainingDataSourceId,
+        RealtimeEndpointStatus,
+        MLModelType,
+        Algorithm,
+        TrainingDataURI
+      )
     )
   }
 
@@ -1882,7 +1886,7 @@ package machinelearning {
     val BINARY     = "BINARY"
     val MULTICLASS = "MULTICLASS"
 
-    val values = IndexedSeq(REGRESSION, BINARY, MULTICLASS)
+    val values = js.Object.freeze(js.Array(REGRESSION, BINARY, MULTICLASS))
   }
 
   /**
@@ -2146,7 +2150,7 @@ package machinelearning {
     val UPDATING = "UPDATING"
     val FAILED   = "FAILED"
 
-    val values = IndexedSeq(NONE, READY, UPDATING, FAILED)
+    val values = js.Object.freeze(js.Array(NONE, READY, UPDATING, FAILED))
   }
 
   /**
@@ -2304,7 +2308,7 @@ package machinelearning {
     val asc = "asc"
     val dsc = "dsc"
 
-    val values = IndexedSeq(asc, dsc)
+    val values = js.Object.freeze(js.Array(asc, dsc))
   }
 
   /**
@@ -2339,7 +2343,7 @@ package machinelearning {
     val Evaluation      = "Evaluation"
     val MLModel         = "MLModel"
 
-    val values = IndexedSeq(BatchPrediction, DataSource, Evaluation, MLModel)
+    val values = js.Object.freeze(js.Array(BatchPrediction, DataSource, Evaluation, MLModel))
   }
 
   @js.native
diff --git a/services/macie/src/main/scala/facade/amazonaws/services/Macie.scala b/services/macie/src/main/scala/facade/amazonaws/services/Macie.scala
index b536e62fc..cc57bd8a8 100644
--- a/services/macie/src/main/scala/facade/amazonaws/services/Macie.scala
+++ b/services/macie/src/main/scala/facade/amazonaws/services/Macie.scala
@@ -366,14 +366,14 @@ package macie {
   object S3ContinuousClassificationTypeEnum {
     val FULL = "FULL"
 
-    val values = IndexedSeq(FULL)
+    val values = js.Object.freeze(js.Array(FULL))
   }
 
   object S3OneTimeClassificationTypeEnum {
     val FULL = "FULL"
     val NONE = "NONE"
 
-    val values = IndexedSeq(FULL, NONE)
+    val values = js.Object.freeze(js.Array(FULL, NONE))
   }
 
   /**
diff --git a/services/managedblockchain/src/main/scala/facade/amazonaws/services/ManagedBlockchain.scala b/services/managedblockchain/src/main/scala/facade/amazonaws/services/ManagedBlockchain.scala
index ca8c153f9..ac86dbdfe 100644
--- a/services/managedblockchain/src/main/scala/facade/amazonaws/services/ManagedBlockchain.scala
+++ b/services/managedblockchain/src/main/scala/facade/amazonaws/services/ManagedBlockchain.scala
@@ -388,13 +388,13 @@ package managedblockchain {
     val STARTER  = "STARTER"
     val STANDARD = "STANDARD"
 
-    val values = IndexedSeq(STARTER, STANDARD)
+    val values = js.Object.freeze(js.Array(STARTER, STANDARD))
   }
 
   object FrameworkEnum {
     val HYPERLEDGER_FABRIC = "HYPERLEDGER_FABRIC"
 
-    val values = IndexedSeq(HYPERLEDGER_FABRIC)
+    val values = js.Object.freeze(js.Array(HYPERLEDGER_FABRIC))
   }
 
   @js.native
@@ -574,7 +574,7 @@ package managedblockchain {
     val REJECTED  = "REJECTED"
     val EXPIRED   = "EXPIRED"
 
-    val values = IndexedSeq(PENDING, ACCEPTED, ACCEPTING, REJECTED, EXPIRED)
+    val values = js.Object.freeze(js.Array(PENDING, ACCEPTED, ACCEPTING, REJECTED, EXPIRED))
   }
 
   /**
@@ -1009,7 +1009,7 @@ package managedblockchain {
     val DELETING      = "DELETING"
     val DELETED       = "DELETED"
 
-    val values = IndexedSeq(CREATING, AVAILABLE, CREATE_FAILED, DELETING, DELETED)
+    val values = js.Object.freeze(js.Array(CREATING, AVAILABLE, CREATE_FAILED, DELETING, DELETED))
   }
 
   /**
@@ -1174,7 +1174,7 @@ package managedblockchain {
     val DELETING      = "DELETING"
     val DELETED       = "DELETED"
 
-    val values = IndexedSeq(CREATING, AVAILABLE, CREATE_FAILED, DELETING, DELETED)
+    val values = js.Object.freeze(js.Array(CREATING, AVAILABLE, CREATE_FAILED, DELETING, DELETED))
   }
 
   /**
@@ -1322,7 +1322,7 @@ package managedblockchain {
     val DELETED       = "DELETED"
     val FAILED        = "FAILED"
 
-    val values = IndexedSeq(CREATING, AVAILABLE, CREATE_FAILED, DELETING, DELETED, FAILED)
+    val values = js.Object.freeze(js.Array(CREATING, AVAILABLE, CREATE_FAILED, DELETING, DELETED, FAILED))
   }
 
   /**
@@ -1434,7 +1434,7 @@ package managedblockchain {
     val EXPIRED       = "EXPIRED"
     val ACTION_FAILED = "ACTION_FAILED"
 
-    val values = IndexedSeq(IN_PROGRESS, APPROVED, REJECTED, EXPIRED, ACTION_FAILED)
+    val values = js.Object.freeze(js.Array(IN_PROGRESS, APPROVED, REJECTED, EXPIRED, ACTION_FAILED))
   }
 
   /**
@@ -1526,7 +1526,7 @@ package managedblockchain {
     val GREATER_THAN             = "GREATER_THAN"
     val GREATER_THAN_OR_EQUAL_TO = "GREATER_THAN_OR_EQUAL_TO"
 
-    val values = IndexedSeq(GREATER_THAN, GREATER_THAN_OR_EQUAL_TO)
+    val values = js.Object.freeze(js.Array(GREATER_THAN, GREATER_THAN_OR_EQUAL_TO))
   }
 
   @js.native
@@ -1595,7 +1595,7 @@ package managedblockchain {
     val YES = "YES"
     val NO  = "NO"
 
-    val values = IndexedSeq(YES, NO)
+    val values = js.Object.freeze(js.Array(YES, NO))
   }
 
   /**
diff --git a/services/marketplacecommerceanalytics/src/main/scala/facade/amazonaws/services/MarketplaceCommerceAnalytics.scala b/services/marketplacecommerceanalytics/src/main/scala/facade/amazonaws/services/MarketplaceCommerceAnalytics.scala
index 2b4cc775d..4d4f06fcc 100644
--- a/services/marketplacecommerceanalytics/src/main/scala/facade/amazonaws/services/MarketplaceCommerceAnalytics.scala
+++ b/services/marketplacecommerceanalytics/src/main/scala/facade/amazonaws/services/MarketplaceCommerceAnalytics.scala
@@ -64,28 +64,30 @@ package marketplacecommerceanalytics {
     val sales_compensation_billed_revenue                  = "sales_compensation_billed_revenue"
     val us_sales_and_use_tax_records                       = "us_sales_and_use_tax_records"
 
-    val values = IndexedSeq(
-      customer_subscriber_hourly_monthly_subscriptions,
-      customer_subscriber_annual_subscriptions,
-      daily_business_usage_by_instance_type,
-      daily_business_fees,
-      daily_business_free_trial_conversions,
-      daily_business_new_instances,
-      daily_business_new_product_subscribers,
-      daily_business_canceled_product_subscribers,
-      monthly_revenue_billing_and_revenue_data,
-      monthly_revenue_annual_subscriptions,
-      disbursed_amount_by_product,
-      disbursed_amount_by_product_with_uncollected_funds,
-      disbursed_amount_by_instance_hours,
-      disbursed_amount_by_customer_geo,
-      disbursed_amount_by_age_of_uncollected_funds,
-      disbursed_amount_by_age_of_disbursed_funds,
-      customer_profile_by_industry,
-      customer_profile_by_revenue,
-      customer_profile_by_geography,
-      sales_compensation_billed_revenue,
-      us_sales_and_use_tax_records
+    val values = js.Object.freeze(
+      js.Array(
+        customer_subscriber_hourly_monthly_subscriptions,
+        customer_subscriber_annual_subscriptions,
+        daily_business_usage_by_instance_type,
+        daily_business_fees,
+        daily_business_free_trial_conversions,
+        daily_business_new_instances,
+        daily_business_new_product_subscribers,
+        daily_business_canceled_product_subscribers,
+        monthly_revenue_billing_and_revenue_data,
+        monthly_revenue_annual_subscriptions,
+        disbursed_amount_by_product,
+        disbursed_amount_by_product_with_uncollected_funds,
+        disbursed_amount_by_instance_hours,
+        disbursed_amount_by_customer_geo,
+        disbursed_amount_by_age_of_uncollected_funds,
+        disbursed_amount_by_age_of_disbursed_funds,
+        customer_profile_by_industry,
+        customer_profile_by_revenue,
+        customer_profile_by_geography,
+        sales_compensation_billed_revenue,
+        us_sales_and_use_tax_records
+      )
     )
   }
 
@@ -213,6 +215,6 @@ package marketplacecommerceanalytics {
     val customer_support_contacts_data      = "customer_support_contacts_data"
     val test_customer_support_contacts_data = "test_customer_support_contacts_data"
 
-    val values = IndexedSeq(customer_support_contacts_data, test_customer_support_contacts_data)
+    val values = js.Object.freeze(js.Array(customer_support_contacts_data, test_customer_support_contacts_data))
   }
 }
diff --git a/services/marketplaceentitlementservice/src/main/scala/facade/amazonaws/services/MarketplaceEntitlementService.scala b/services/marketplaceentitlementservice/src/main/scala/facade/amazonaws/services/MarketplaceEntitlementService.scala
index e701eff24..c6acfb369 100644
--- a/services/marketplaceentitlementservice/src/main/scala/facade/amazonaws/services/MarketplaceEntitlementService.scala
+++ b/services/marketplaceentitlementservice/src/main/scala/facade/amazonaws/services/MarketplaceEntitlementService.scala
@@ -95,7 +95,7 @@ package marketplaceentitlementservice {
     val CUSTOMER_IDENTIFIER = "CUSTOMER_IDENTIFIER"
     val DIMENSION           = "DIMENSION"
 
-    val values = IndexedSeq(CUSTOMER_IDENTIFIER, DIMENSION)
+    val values = js.Object.freeze(js.Array(CUSTOMER_IDENTIFIER, DIMENSION))
   }
 
   /**
diff --git a/services/marketplacemetering/src/main/scala/facade/amazonaws/services/MarketplaceMetering.scala b/services/marketplacemetering/src/main/scala/facade/amazonaws/services/MarketplaceMetering.scala
index 622cff015..b1f654df7 100644
--- a/services/marketplacemetering/src/main/scala/facade/amazonaws/services/MarketplaceMetering.scala
+++ b/services/marketplacemetering/src/main/scala/facade/amazonaws/services/MarketplaceMetering.scala
@@ -274,6 +274,6 @@ package marketplacemetering {
     val CustomerNotSubscribed = "CustomerNotSubscribed"
     val DuplicateRecord       = "DuplicateRecord"
 
-    val values = IndexedSeq(Success, CustomerNotSubscribed, DuplicateRecord)
+    val values = js.Object.freeze(js.Array(Success, CustomerNotSubscribed, DuplicateRecord))
   }
 }
diff --git a/services/mediaconnect/src/main/scala/facade/amazonaws/services/MediaConnect.scala b/services/mediaconnect/src/main/scala/facade/amazonaws/services/MediaConnect.scala
index 836e21d7d..1542a4323 100644
--- a/services/mediaconnect/src/main/scala/facade/amazonaws/services/MediaConnect.scala
+++ b/services/mediaconnect/src/main/scala/facade/amazonaws/services/MediaConnect.scala
@@ -183,7 +183,7 @@ package mediaconnect {
     val aes192 = "aes192"
     val aes256 = "aes256"
 
-    val values = IndexedSeq(aes128, aes192, aes256)
+    val values = js.Object.freeze(js.Array(aes128, aes192, aes256))
   }
 
   /**
@@ -499,7 +499,7 @@ package mediaconnect {
     val speke        = "speke"
     val `static-key` = "static-key"
 
-    val values = IndexedSeq(speke, `static-key`)
+    val values = js.Object.freeze(js.Array(speke, `static-key`))
   }
 
   @js.native
@@ -734,7 +734,7 @@ package mediaconnect {
     val rtp         = "rtp"
     val `zixi-pull` = "zixi-pull"
 
-    val values = IndexedSeq(`zixi-push`, `rtp-fec`, rtp, `zixi-pull`)
+    val values = js.Object.freeze(js.Array(`zixi-push`, `rtp-fec`, rtp, `zixi-pull`))
   }
 
   @js.native
@@ -906,7 +906,7 @@ package mediaconnect {
     val OWNED    = "OWNED"
     val ENTITLED = "ENTITLED"
 
-    val values = IndexedSeq(OWNED, ENTITLED)
+    val values = js.Object.freeze(js.Array(OWNED, ENTITLED))
   }
 
   @js.native
@@ -953,7 +953,7 @@ package mediaconnect {
     val STOPPING = "STOPPING"
     val ERROR    = "ERROR"
 
-    val values = IndexedSeq(STANDBY, ACTIVE, UPDATING, DELETING, STARTING, STOPPING, ERROR)
+    val values = js.Object.freeze(js.Array(STANDBY, ACTIVE, UPDATING, DELETING, STARTING, STOPPING, ERROR))
   }
 
   @js.native
diff --git a/services/mediaconvert/src/main/scala/facade/amazonaws/services/MediaConvert.scala b/services/mediaconvert/src/main/scala/facade/amazonaws/services/MediaConvert.scala
index 0af14dde0..ce675cdb8 100644
--- a/services/mediaconvert/src/main/scala/facade/amazonaws/services/MediaConvert.scala
+++ b/services/mediaconvert/src/main/scala/facade/amazonaws/services/MediaConvert.scala
@@ -501,7 +501,7 @@ package mediaconvert {
     val BROADCASTER_MIXED_AD = "BROADCASTER_MIXED_AD"
     val NORMAL               = "NORMAL"
 
-    val values = IndexedSeq(BROADCASTER_MIXED_AD, NORMAL)
+    val values = js.Object.freeze(js.Array(BROADCASTER_MIXED_AD, NORMAL))
   }
 
   /**
@@ -512,7 +512,7 @@ package mediaconvert {
     val HEV1 = "HEV1"
     val HEV2 = "HEV2"
 
-    val values = IndexedSeq(LC, HEV1, HEV2)
+    val values = js.Object.freeze(js.Array(LC, HEV1, HEV2))
   }
 
   /**
@@ -525,7 +525,8 @@ package mediaconvert {
     val CODING_MODE_2_0 = "CODING_MODE_2_0"
     val CODING_MODE_5_1 = "CODING_MODE_5_1"
 
-    val values = IndexedSeq(AD_RECEIVER_MIX, CODING_MODE_1_0, CODING_MODE_1_1, CODING_MODE_2_0, CODING_MODE_5_1)
+    val values =
+      js.Object.freeze(js.Array(AD_RECEIVER_MIX, CODING_MODE_1_0, CODING_MODE_1_1, CODING_MODE_2_0, CODING_MODE_5_1))
   }
 
   /**
@@ -535,7 +536,7 @@ package mediaconvert {
     val CBR = "CBR"
     val VBR = "VBR"
 
-    val values = IndexedSeq(CBR, VBR)
+    val values = js.Object.freeze(js.Array(CBR, VBR))
   }
 
   /**
@@ -545,7 +546,7 @@ package mediaconvert {
     val LATM_LOAS = "LATM_LOAS"
     val NONE      = "NONE"
 
-    val values = IndexedSeq(LATM_LOAS, NONE)
+    val values = js.Object.freeze(js.Array(LATM_LOAS, NONE))
   }
 
   /**
@@ -599,7 +600,7 @@ package mediaconvert {
     val MPEG2 = "MPEG2"
     val MPEG4 = "MPEG4"
 
-    val values = IndexedSeq(MPEG2, MPEG4)
+    val values = js.Object.freeze(js.Array(MPEG2, MPEG4))
   }
 
   /**
@@ -611,7 +612,7 @@ package mediaconvert {
     val MEDIUM_HIGH = "MEDIUM_HIGH"
     val HIGH        = "HIGH"
 
-    val values = IndexedSeq(LOW, MEDIUM_LOW, MEDIUM_HIGH, HIGH)
+    val values = js.Object.freeze(js.Array(LOW, MEDIUM_LOW, MEDIUM_HIGH, HIGH))
   }
 
   /**
@@ -627,15 +628,17 @@ package mediaconvert {
     val VISUALLY_IMPAIRED = "VISUALLY_IMPAIRED"
     val VOICE_OVER        = "VOICE_OVER"
 
-    val values = IndexedSeq(
-      COMPLETE_MAIN,
-      COMMENTARY,
-      DIALOGUE,
-      EMERGENCY,
-      HEARING_IMPAIRED,
-      MUSIC_AND_EFFECTS,
-      VISUALLY_IMPAIRED,
-      VOICE_OVER
+    val values = js.Object.freeze(
+      js.Array(
+        COMPLETE_MAIN,
+        COMMENTARY,
+        DIALOGUE,
+        EMERGENCY,
+        HEARING_IMPAIRED,
+        MUSIC_AND_EFFECTS,
+        VISUALLY_IMPAIRED,
+        VOICE_OVER
+      )
     )
   }
 
@@ -648,7 +651,7 @@ package mediaconvert {
     val CODING_MODE_2_0     = "CODING_MODE_2_0"
     val CODING_MODE_3_2_LFE = "CODING_MODE_3_2_LFE"
 
-    val values = IndexedSeq(CODING_MODE_1_0, CODING_MODE_1_1, CODING_MODE_2_0, CODING_MODE_3_2_LFE)
+    val values = js.Object.freeze(js.Array(CODING_MODE_1_0, CODING_MODE_1_1, CODING_MODE_2_0, CODING_MODE_3_2_LFE))
   }
 
   /**
@@ -658,7 +661,7 @@ package mediaconvert {
     val FILM_STANDARD = "FILM_STANDARD"
     val NONE          = "NONE"
 
-    val values = IndexedSeq(FILM_STANDARD, NONE)
+    val values = js.Object.freeze(js.Array(FILM_STANDARD, NONE))
   }
 
   /**
@@ -668,7 +671,7 @@ package mediaconvert {
     val ENABLED  = "ENABLED"
     val DISABLED = "DISABLED"
 
-    val values = IndexedSeq(ENABLED, DISABLED)
+    val values = js.Object.freeze(js.Array(ENABLED, DISABLED))
   }
 
   /**
@@ -678,7 +681,7 @@ package mediaconvert {
     val FOLLOW_INPUT   = "FOLLOW_INPUT"
     val USE_CONFIGURED = "USE_CONFIGURED"
 
-    val values = IndexedSeq(FOLLOW_INPUT, USE_CONFIGURED)
+    val values = js.Object.freeze(js.Array(FOLLOW_INPUT, USE_CONFIGURED))
   }
 
   /**
@@ -729,7 +732,7 @@ package mediaconvert {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -760,7 +763,7 @@ package mediaconvert {
     val AUTO  = "AUTO"
     val FIXED = "FIXED"
 
-    val values = IndexedSeq(NONE, AUTO, FIXED)
+    val values = js.Object.freeze(js.Array(NONE, AUTO, FIXED))
   }
 
   /**
@@ -814,7 +817,7 @@ package mediaconvert {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   @js.native
@@ -859,7 +862,7 @@ package mediaconvert {
     val EAC3_ATMOS  = "EAC3_ATMOS"
     val PASSTHROUGH = "PASSTHROUGH"
 
-    val values = IndexedSeq(AAC, MP2, WAV, AIFF, AC3, EAC3, EAC3_ATMOS, PASSTHROUGH)
+    val values = js.Object.freeze(js.Array(AAC, MP2, WAV, AIFF, AC3, EAC3, EAC3_ATMOS, PASSTHROUGH))
   }
 
   /**
@@ -908,7 +911,7 @@ package mediaconvert {
     val DEFAULT     = "DEFAULT"
     val NOT_DEFAULT = "NOT_DEFAULT"
 
-    val values = IndexedSeq(DEFAULT, NOT_DEFAULT)
+    val values = js.Object.freeze(js.Array(DEFAULT, NOT_DEFAULT))
   }
 
   /**
@@ -963,7 +966,7 @@ package mediaconvert {
     val FOLLOW_INPUT   = "FOLLOW_INPUT"
     val USE_CONFIGURED = "USE_CONFIGURED"
 
-    val values = IndexedSeq(FOLLOW_INPUT, USE_CONFIGURED)
+    val values = js.Object.freeze(js.Array(FOLLOW_INPUT, USE_CONFIGURED))
   }
 
   /**
@@ -975,7 +978,7 @@ package mediaconvert {
     val ITU_BS_1770_3 = "ITU_BS_1770_3"
     val ITU_BS_1770_4 = "ITU_BS_1770_4"
 
-    val values = IndexedSeq(ITU_BS_1770_1, ITU_BS_1770_2, ITU_BS_1770_3, ITU_BS_1770_4)
+    val values = js.Object.freeze(js.Array(ITU_BS_1770_1, ITU_BS_1770_2, ITU_BS_1770_3, ITU_BS_1770_4))
   }
 
   /**
@@ -985,7 +988,7 @@ package mediaconvert {
     val CORRECT_AUDIO = "CORRECT_AUDIO"
     val MEASURE_ONLY  = "MEASURE_ONLY"
 
-    val values = IndexedSeq(CORRECT_AUDIO, MEASURE_ONLY)
+    val values = js.Object.freeze(js.Array(CORRECT_AUDIO, MEASURE_ONLY))
   }
 
   /**
@@ -995,7 +998,7 @@ package mediaconvert {
     val LOG      = "LOG"
     val DONT_LOG = "DONT_LOG"
 
-    val values = IndexedSeq(LOG, DONT_LOG)
+    val values = js.Object.freeze(js.Array(LOG, DONT_LOG))
   }
 
   /**
@@ -1005,7 +1008,7 @@ package mediaconvert {
     val TRUE_PEAK = "TRUE_PEAK"
     val NONE      = "NONE"
 
-    val values = IndexedSeq(TRUE_PEAK, NONE)
+    val values = js.Object.freeze(js.Array(TRUE_PEAK, NONE))
   }
 
   /**
@@ -1116,7 +1119,7 @@ package mediaconvert {
     val TRACK         = "TRACK"
     val LANGUAGE_CODE = "LANGUAGE_CODE"
 
-    val values = IndexedSeq(PID, TRACK, LANGUAGE_CODE)
+    val values = js.Object.freeze(js.Array(PID, TRACK, LANGUAGE_CODE))
   }
 
   /**
@@ -1126,7 +1129,7 @@ package mediaconvert {
     val FOLLOW_INPUT   = "FOLLOW_INPUT"
     val USE_CONFIGURED = "USE_CONFIGURED"
 
-    val values = IndexedSeq(FOLLOW_INPUT, USE_CONFIGURED)
+    val values = js.Object.freeze(js.Array(FOLLOW_INPUT, USE_CONFIGURED))
   }
 
   /**
@@ -1155,7 +1158,7 @@ package mediaconvert {
     val PRESET       = "PRESET"
     val JOB_TEMPLATE = "JOB_TEMPLATE"
 
-    val values = IndexedSeq(QUEUE, PRESET, JOB_TEMPLATE)
+    val values = js.Object.freeze(js.Array(QUEUE, PRESET, JOB_TEMPLATE))
   }
 
   /**
@@ -1231,7 +1234,7 @@ package mediaconvert {
     val CENTERED = "CENTERED"
     val LEFT     = "LEFT"
 
-    val values = IndexedSeq(CENTERED, LEFT)
+    val values = js.Object.freeze(js.Array(CENTERED, LEFT))
   }
 
   /**
@@ -1243,7 +1246,7 @@ package mediaconvert {
     val BLACK = "BLACK"
     val WHITE = "WHITE"
 
-    val values = IndexedSeq(NONE, BLACK, WHITE)
+    val values = js.Object.freeze(js.Array(NONE, BLACK, WHITE))
   }
 
   /**
@@ -1257,7 +1260,7 @@ package mediaconvert {
     val GREEN  = "GREEN"
     val BLUE   = "BLUE"
 
-    val values = IndexedSeq(WHITE, BLACK, YELLOW, RED, GREEN, BLUE)
+    val values = js.Object.freeze(js.Array(WHITE, BLACK, YELLOW, RED, GREEN, BLUE))
   }
 
   /**
@@ -1271,7 +1274,7 @@ package mediaconvert {
     val GREEN  = "GREEN"
     val BLUE   = "BLUE"
 
-    val values = IndexedSeq(BLACK, WHITE, YELLOW, RED, GREEN, BLUE)
+    val values = js.Object.freeze(js.Array(BLACK, WHITE, YELLOW, RED, GREEN, BLUE))
   }
 
   /**
@@ -1283,7 +1286,7 @@ package mediaconvert {
     val BLACK = "BLACK"
     val WHITE = "WHITE"
 
-    val values = IndexedSeq(NONE, BLACK, WHITE)
+    val values = js.Object.freeze(js.Array(NONE, BLACK, WHITE))
   }
 
   /**
@@ -1293,7 +1296,7 @@ package mediaconvert {
     val FIXED_GRID   = "FIXED_GRID"
     val PROPORTIONAL = "PROPORTIONAL"
 
-    val values = IndexedSeq(FIXED_GRID, PROPORTIONAL)
+    val values = js.Object.freeze(js.Array(FIXED_GRID, PROPORTIONAL))
   }
 
   @js.native
@@ -1434,18 +1437,20 @@ package mediaconvert {
     val TTML                 = "TTML"
     val WEBVTT               = "WEBVTT"
 
-    val values = IndexedSeq(
-      BURN_IN,
-      DVB_SUB,
-      EMBEDDED,
-      EMBEDDED_PLUS_SCTE20,
-      SCTE20_PLUS_EMBEDDED,
-      SCC,
-      SRT,
-      SMI,
-      TELETEXT,
-      TTML,
-      WEBVTT
+    val values = js.Object.freeze(
+      js.Array(
+        BURN_IN,
+        DVB_SUB,
+        EMBEDDED,
+        EMBEDDED_PLUS_SCTE20,
+        SCTE20_PLUS_EMBEDDED,
+        SCC,
+        SRT,
+        SMI,
+        TELETEXT,
+        TTML,
+        WEBVTT
+      )
     )
   }
 
@@ -1526,7 +1531,9 @@ package mediaconvert {
     val NULL_SOURCE = "NULL_SOURCE"
     val IMSC        = "IMSC"
 
-    val values = IndexedSeq(ANCILLARY, DVB_SUB, EMBEDDED, SCTE20, SCC, TTML, STL, SRT, SMI, TELETEXT, NULL_SOURCE, IMSC)
+    val values = js.Object.freeze(
+      js.Array(ANCILLARY, DVB_SUB, EMBEDDED, SCTE20, SCC, TTML, STL, SRT, SMI, TELETEXT, NULL_SOURCE, IMSC)
+    )
   }
 
   /**
@@ -1554,7 +1561,7 @@ package mediaconvert {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -1564,7 +1571,7 @@ package mediaconvert {
     val RFC_6381 = "RFC_6381"
     val RFC_4281 = "RFC_4281"
 
-    val values = IndexedSeq(RFC_6381, RFC_4281)
+    val values = js.Object.freeze(js.Array(RFC_6381, RFC_4281))
   }
 
   /**
@@ -1610,7 +1617,7 @@ package mediaconvert {
   object CmafEncryptionTypeEnum {
     val SAMPLE_AES = "SAMPLE_AES"
 
-    val values = IndexedSeq(SAMPLE_AES)
+    val values = js.Object.freeze(js.Array(SAMPLE_AES))
   }
 
   /**
@@ -1683,7 +1690,7 @@ package mediaconvert {
     val INCLUDE = "INCLUDE"
     val EXCLUDE = "EXCLUDE"
 
-    val values = IndexedSeq(INCLUDE, EXCLUDE)
+    val values = js.Object.freeze(js.Array(INCLUDE, EXCLUDE))
   }
 
   /**
@@ -1693,7 +1700,7 @@ package mediaconvert {
     val SPEKE      = "SPEKE"
     val STATIC_KEY = "STATIC_KEY"
 
-    val values = IndexedSeq(SPEKE, STATIC_KEY)
+    val values = js.Object.freeze(js.Array(SPEKE, STATIC_KEY))
   }
 
   /**
@@ -1703,7 +1710,7 @@ package mediaconvert {
     val GZIP = "GZIP"
     val NONE = "NONE"
 
-    val values = IndexedSeq(GZIP, NONE)
+    val values = js.Object.freeze(js.Array(GZIP, NONE))
   }
 
   /**
@@ -1713,7 +1720,7 @@ package mediaconvert {
     val FLOATING_POINT = "FLOATING_POINT"
     val INTEGER        = "INTEGER"
 
-    val values = IndexedSeq(FLOATING_POINT, INTEGER)
+    val values = js.Object.freeze(js.Array(FLOATING_POINT, INTEGER))
   }
 
   /**
@@ -1723,7 +1730,7 @@ package mediaconvert {
     val SINGLE_FILE     = "SINGLE_FILE"
     val SEGMENTED_FILES = "SEGMENTED_FILES"
 
-    val values = IndexedSeq(SINGLE_FILE, SEGMENTED_FILES)
+    val values = js.Object.freeze(js.Array(SINGLE_FILE, SEGMENTED_FILES))
   }
 
   /**
@@ -1733,7 +1740,7 @@ package mediaconvert {
     val INCLUDE = "INCLUDE"
     val EXCLUDE = "EXCLUDE"
 
-    val values = IndexedSeq(INCLUDE, EXCLUDE)
+    val values = js.Object.freeze(js.Array(INCLUDE, EXCLUDE))
   }
 
   /**
@@ -1743,7 +1750,7 @@ package mediaconvert {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -1753,7 +1760,7 @@ package mediaconvert {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -1796,7 +1803,7 @@ package mediaconvert {
     val IGNORE = "IGNORE"
     val INSERT = "INSERT"
 
-    val values = IndexedSeq(IGNORE, INSERT)
+    val values = js.Object.freeze(js.Array(IGNORE, INSERT))
   }
 
   /**
@@ -1809,7 +1816,7 @@ package mediaconvert {
     val HDR10    = "HDR10"
     val HLG_2020 = "HLG_2020"
 
-    val values = IndexedSeq(FOLLOW, REC_601, REC_709, HDR10, HLG_2020)
+    val values = js.Object.freeze(js.Array(FOLLOW, REC_601, REC_709, HDR10, HLG_2020))
   }
 
   /**
@@ -1822,7 +1829,7 @@ package mediaconvert {
     val FORCE_HDR10    = "FORCE_HDR10"
     val FORCE_HLG_2020 = "FORCE_HLG_2020"
 
-    val values = IndexedSeq(NONE, FORCE_601, FORCE_709, FORCE_HDR10, FORCE_HLG_2020)
+    val values = js.Object.freeze(js.Array(NONE, FORCE_601, FORCE_709, FORCE_HDR10, FORCE_HLG_2020))
   }
 
   /**
@@ -1832,7 +1839,7 @@ package mediaconvert {
     val FORCE    = "FORCE"
     val FALLBACK = "FALLBACK"
 
-    val values = IndexedSeq(FORCE, FALLBACK)
+    val values = js.Object.freeze(js.Array(FORCE, FALLBACK))
   }
 
   /**
@@ -1841,7 +1848,7 @@ package mediaconvert {
   object CommitmentEnum {
     val ONE_YEAR = "ONE_YEAR"
 
-    val values = IndexedSeq(ONE_YEAR)
+    val values = js.Object.freeze(js.Array(ONE_YEAR))
   }
 
   /**
@@ -1892,7 +1899,7 @@ package mediaconvert {
     val MXF  = "MXF"
     val RAW  = "RAW"
 
-    val values = IndexedSeq(F4V, ISMV, M2TS, M3U8, CMFC, MOV, MP4, MPD, MXF, RAW)
+    val values = js.Object.freeze(js.Array(F4V, ISMV, M2TS, M3U8, CMFC, MOV, MP4, MPD, MXF, RAW))
   }
 
   @js.native
@@ -2176,7 +2183,7 @@ package mediaconvert {
     val HBBTV_1_5 = "HBBTV_1_5"
     val NONE      = "NONE"
 
-    val values = IndexedSeq(HBBTV_1_5, NONE)
+    val values = js.Object.freeze(js.Array(HBBTV_1_5, NONE))
   }
 
   /**
@@ -2186,7 +2193,7 @@ package mediaconvert {
     val CENC_V1         = "CENC_V1"
     val UNENCRYPTED_SEI = "UNENCRYPTED_SEI"
 
-    val values = IndexedSeq(CENC_V1, UNENCRYPTED_SEI)
+    val values = js.Object.freeze(js.Array(CENC_V1, UNENCRYPTED_SEI))
   }
 
   /**
@@ -2196,7 +2203,7 @@ package mediaconvert {
     val SINGLE_FILE     = "SINGLE_FILE"
     val SEGMENTED_FILES = "SEGMENTED_FILES"
 
-    val values = IndexedSeq(SINGLE_FILE, SEGMENTED_FILES)
+    val values = js.Object.freeze(js.Array(SINGLE_FILE, SEGMENTED_FILES))
   }
 
   /**
@@ -2206,7 +2213,7 @@ package mediaconvert {
     val ENABLED  = "ENABLED"
     val DISABLED = "DISABLED"
 
-    val values = IndexedSeq(ENABLED, DISABLED)
+    val values = js.Object.freeze(js.Array(ENABLED, DISABLED))
   }
 
   /**
@@ -2217,7 +2224,7 @@ package mediaconvert {
     val AES_CBC = "AES_CBC"
     val AES_GCM = "AES_GCM"
 
-    val values = IndexedSeq(AES_CTR, AES_CBC, AES_GCM)
+    val values = js.Object.freeze(js.Array(AES_CTR, AES_CBC, AES_GCM))
   }
 
   /**
@@ -2229,7 +2236,7 @@ package mediaconvert {
     val BLEND              = "BLEND"
     val BLEND_TICKER       = "BLEND_TICKER"
 
-    val values = IndexedSeq(INTERPOLATE, INTERPOLATE_TICKER, BLEND, BLEND_TICKER)
+    val values = js.Object.freeze(js.Array(INTERPOLATE, INTERPOLATE_TICKER, BLEND, BLEND_TICKER))
   }
 
   /**
@@ -2263,7 +2270,7 @@ package mediaconvert {
     val FORCE_ALL_FRAMES = "FORCE_ALL_FRAMES"
     val NORMAL           = "NORMAL"
 
-    val values = IndexedSeq(FORCE_ALL_FRAMES, NORMAL)
+    val values = js.Object.freeze(js.Array(FORCE_ALL_FRAMES, NORMAL))
   }
 
   /**
@@ -2274,7 +2281,7 @@ package mediaconvert {
     val INVERSE_TELECINE = "INVERSE_TELECINE"
     val ADAPTIVE         = "ADAPTIVE"
 
-    val values = IndexedSeq(DEINTERLACE, INVERSE_TELECINE, ADAPTIVE)
+    val values = js.Object.freeze(js.Array(DEINTERLACE, INVERSE_TELECINE, ADAPTIVE))
   }
 
   @js.native
@@ -2371,7 +2378,7 @@ package mediaconvert {
     val DEFAULT  = "DEFAULT"
     val GET_ONLY = "GET_ONLY"
 
-    val values = IndexedSeq(DEFAULT, GET_ONLY)
+    val values = js.Object.freeze(js.Array(DEFAULT, GET_ONLY))
   }
 
   /**
@@ -2470,7 +2477,7 @@ package mediaconvert {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -2615,7 +2622,7 @@ package mediaconvert {
     val CENTERED = "CENTERED"
     val LEFT     = "LEFT"
 
-    val values = IndexedSeq(CENTERED, LEFT)
+    val values = js.Object.freeze(js.Array(CENTERED, LEFT))
   }
 
   /**
@@ -2627,7 +2634,7 @@ package mediaconvert {
     val BLACK = "BLACK"
     val WHITE = "WHITE"
 
-    val values = IndexedSeq(NONE, BLACK, WHITE)
+    val values = js.Object.freeze(js.Array(NONE, BLACK, WHITE))
   }
 
   /**
@@ -2641,7 +2648,7 @@ package mediaconvert {
     val GREEN  = "GREEN"
     val BLUE   = "BLUE"
 
-    val values = IndexedSeq(WHITE, BLACK, YELLOW, RED, GREEN, BLUE)
+    val values = js.Object.freeze(js.Array(WHITE, BLACK, YELLOW, RED, GREEN, BLUE))
   }
 
   /**
@@ -2655,7 +2662,7 @@ package mediaconvert {
     val GREEN  = "GREEN"
     val BLUE   = "BLUE"
 
-    val values = IndexedSeq(BLACK, WHITE, YELLOW, RED, GREEN, BLUE)
+    val values = js.Object.freeze(js.Array(BLACK, WHITE, YELLOW, RED, GREEN, BLUE))
   }
 
   /**
@@ -2667,7 +2674,7 @@ package mediaconvert {
     val BLACK = "BLACK"
     val WHITE = "WHITE"
 
-    val values = IndexedSeq(NONE, BLACK, WHITE)
+    val values = js.Object.freeze(js.Array(NONE, BLACK, WHITE))
   }
 
   /**
@@ -2677,7 +2684,7 @@ package mediaconvert {
     val FIXED_GRID   = "FIXED_GRID"
     val PROPORTIONAL = "PROPORTIONAL"
 
-    val values = IndexedSeq(FIXED_GRID, PROPORTIONAL)
+    val values = js.Object.freeze(js.Array(FIXED_GRID, PROPORTIONAL))
   }
 
   /**
@@ -2704,7 +2711,7 @@ package mediaconvert {
   object Eac3AtmosBitstreamModeEnum {
     val COMPLETE_MAIN = "COMPLETE_MAIN"
 
-    val values = IndexedSeq(COMPLETE_MAIN)
+    val values = js.Object.freeze(js.Array(COMPLETE_MAIN))
   }
 
   /**
@@ -2713,7 +2720,7 @@ package mediaconvert {
   object Eac3AtmosCodingModeEnum {
     val CODING_MODE_9_1_6 = "CODING_MODE_9_1_6"
 
-    val values = IndexedSeq(CODING_MODE_9_1_6)
+    val values = js.Object.freeze(js.Array(CODING_MODE_9_1_6))
   }
 
   /**
@@ -2723,7 +2730,7 @@ package mediaconvert {
     val ENABLED  = "ENABLED"
     val DISABLED = "DISABLED"
 
-    val values = IndexedSeq(ENABLED, DISABLED)
+    val values = js.Object.freeze(js.Array(ENABLED, DISABLED))
   }
 
   /**
@@ -2737,7 +2744,7 @@ package mediaconvert {
     val MUSIC_LIGHT    = "MUSIC_LIGHT"
     val SPEECH         = "SPEECH"
 
-    val values = IndexedSeq(NONE, FILM_STANDARD, FILM_LIGHT, MUSIC_STANDARD, MUSIC_LIGHT, SPEECH)
+    val values = js.Object.freeze(js.Array(NONE, FILM_STANDARD, FILM_LIGHT, MUSIC_STANDARD, MUSIC_LIGHT, SPEECH))
   }
 
   /**
@@ -2751,7 +2758,7 @@ package mediaconvert {
     val MUSIC_LIGHT    = "MUSIC_LIGHT"
     val SPEECH         = "SPEECH"
 
-    val values = IndexedSeq(NONE, FILM_STANDARD, FILM_LIGHT, MUSIC_STANDARD, MUSIC_LIGHT, SPEECH)
+    val values = js.Object.freeze(js.Array(NONE, FILM_STANDARD, FILM_LIGHT, MUSIC_STANDARD, MUSIC_LIGHT, SPEECH))
   }
 
   /**
@@ -2764,7 +2771,7 @@ package mediaconvert {
     val ITU_BS_1770_3 = "ITU_BS_1770_3"
     val ITU_BS_1770_4 = "ITU_BS_1770_4"
 
-    val values = IndexedSeq(LEQ_A, ITU_BS_1770_1, ITU_BS_1770_2, ITU_BS_1770_3, ITU_BS_1770_4)
+    val values = js.Object.freeze(js.Array(LEQ_A, ITU_BS_1770_1, ITU_BS_1770_2, ITU_BS_1770_3, ITU_BS_1770_4))
   }
 
   /**
@@ -2836,7 +2843,7 @@ package mediaconvert {
     val SURROUND      = "SURROUND"
     val DPL2          = "DPL2"
 
-    val values = IndexedSeq(NOT_INDICATED, STEREO, SURROUND, DPL2)
+    val values = js.Object.freeze(js.Array(NOT_INDICATED, STEREO, SURROUND, DPL2))
   }
 
   /**
@@ -2847,7 +2854,7 @@ package mediaconvert {
     val ENABLED       = "ENABLED"
     val DISABLED      = "DISABLED"
 
-    val values = IndexedSeq(NOT_INDICATED, ENABLED, DISABLED)
+    val values = js.Object.freeze(js.Array(NOT_INDICATED, ENABLED, DISABLED))
   }
 
   /**
@@ -2857,7 +2864,7 @@ package mediaconvert {
     val ATTENUATE_3_DB = "ATTENUATE_3_DB"
     val NONE           = "NONE"
 
-    val values = IndexedSeq(ATTENUATE_3_DB, NONE)
+    val values = js.Object.freeze(js.Array(ATTENUATE_3_DB, NONE))
   }
 
   /**
@@ -2870,7 +2877,7 @@ package mediaconvert {
     val HEARING_IMPAIRED  = "HEARING_IMPAIRED"
     val VISUALLY_IMPAIRED = "VISUALLY_IMPAIRED"
 
-    val values = IndexedSeq(COMPLETE_MAIN, COMMENTARY, EMERGENCY, HEARING_IMPAIRED, VISUALLY_IMPAIRED)
+    val values = js.Object.freeze(js.Array(COMPLETE_MAIN, COMMENTARY, EMERGENCY, HEARING_IMPAIRED, VISUALLY_IMPAIRED))
   }
 
   /**
@@ -2881,7 +2888,7 @@ package mediaconvert {
     val CODING_MODE_2_0 = "CODING_MODE_2_0"
     val CODING_MODE_3_2 = "CODING_MODE_3_2"
 
-    val values = IndexedSeq(CODING_MODE_1_0, CODING_MODE_2_0, CODING_MODE_3_2)
+    val values = js.Object.freeze(js.Array(CODING_MODE_1_0, CODING_MODE_2_0, CODING_MODE_3_2))
   }
 
   /**
@@ -2891,7 +2898,7 @@ package mediaconvert {
     val ENABLED  = "ENABLED"
     val DISABLED = "DISABLED"
 
-    val values = IndexedSeq(ENABLED, DISABLED)
+    val values = js.Object.freeze(js.Array(ENABLED, DISABLED))
   }
 
   /**
@@ -2905,7 +2912,7 @@ package mediaconvert {
     val MUSIC_LIGHT    = "MUSIC_LIGHT"
     val SPEECH         = "SPEECH"
 
-    val values = IndexedSeq(NONE, FILM_STANDARD, FILM_LIGHT, MUSIC_STANDARD, MUSIC_LIGHT, SPEECH)
+    val values = js.Object.freeze(js.Array(NONE, FILM_STANDARD, FILM_LIGHT, MUSIC_STANDARD, MUSIC_LIGHT, SPEECH))
   }
 
   /**
@@ -2919,7 +2926,7 @@ package mediaconvert {
     val MUSIC_LIGHT    = "MUSIC_LIGHT"
     val SPEECH         = "SPEECH"
 
-    val values = IndexedSeq(NONE, FILM_STANDARD, FILM_LIGHT, MUSIC_STANDARD, MUSIC_LIGHT, SPEECH)
+    val values = js.Object.freeze(js.Array(NONE, FILM_STANDARD, FILM_LIGHT, MUSIC_STANDARD, MUSIC_LIGHT, SPEECH))
   }
 
   /**
@@ -2929,7 +2936,7 @@ package mediaconvert {
     val LFE    = "LFE"
     val NO_LFE = "NO_LFE"
 
-    val values = IndexedSeq(LFE, NO_LFE)
+    val values = js.Object.freeze(js.Array(LFE, NO_LFE))
   }
 
   /**
@@ -2939,7 +2946,7 @@ package mediaconvert {
     val ENABLED  = "ENABLED"
     val DISABLED = "DISABLED"
 
-    val values = IndexedSeq(ENABLED, DISABLED)
+    val values = js.Object.freeze(js.Array(ENABLED, DISABLED))
   }
 
   /**
@@ -2949,7 +2956,7 @@ package mediaconvert {
     val FOLLOW_INPUT   = "FOLLOW_INPUT"
     val USE_CONFIGURED = "USE_CONFIGURED"
 
-    val values = IndexedSeq(FOLLOW_INPUT, USE_CONFIGURED)
+    val values = js.Object.freeze(js.Array(FOLLOW_INPUT, USE_CONFIGURED))
   }
 
   /**
@@ -2959,7 +2966,7 @@ package mediaconvert {
     val WHEN_POSSIBLE  = "WHEN_POSSIBLE"
     val NO_PASSTHROUGH = "NO_PASSTHROUGH"
 
-    val values = IndexedSeq(WHEN_POSSIBLE, NO_PASSTHROUGH)
+    val values = js.Object.freeze(js.Array(WHEN_POSSIBLE, NO_PASSTHROUGH))
   }
 
   /**
@@ -2969,7 +2976,7 @@ package mediaconvert {
     val SHIFT_90_DEGREES = "SHIFT_90_DEGREES"
     val NO_SHIFT         = "NO_SHIFT"
 
-    val values = IndexedSeq(SHIFT_90_DEGREES, NO_SHIFT)
+    val values = js.Object.freeze(js.Array(SHIFT_90_DEGREES, NO_SHIFT))
   }
 
   /**
@@ -3059,7 +3066,7 @@ package mediaconvert {
     val LT_RT         = "LT_RT"
     val DPL2          = "DPL2"
 
-    val values = IndexedSeq(NOT_INDICATED, LO_RO, LT_RT, DPL2)
+    val values = js.Object.freeze(js.Array(NOT_INDICATED, LO_RO, LT_RT, DPL2))
   }
 
   /**
@@ -3070,7 +3077,7 @@ package mediaconvert {
     val ENABLED       = "ENABLED"
     val DISABLED      = "DISABLED"
 
-    val values = IndexedSeq(NOT_INDICATED, ENABLED, DISABLED)
+    val values = js.Object.freeze(js.Array(NOT_INDICATED, ENABLED, DISABLED))
   }
 
   /**
@@ -3081,7 +3088,7 @@ package mediaconvert {
     val ENABLED       = "ENABLED"
     val DISABLED      = "DISABLED"
 
-    val values = IndexedSeq(NOT_INDICATED, ENABLED, DISABLED)
+    val values = js.Object.freeze(js.Array(NOT_INDICATED, ENABLED, DISABLED))
   }
 
   /**
@@ -3091,7 +3098,7 @@ package mediaconvert {
     val UPCONVERT = "UPCONVERT"
     val DISABLED  = "DISABLED"
 
-    val values = IndexedSeq(UPCONVERT, DISABLED)
+    val values = js.Object.freeze(js.Array(UPCONVERT, DISABLED))
   }
 
   /**
@@ -3228,7 +3235,7 @@ package mediaconvert {
     val PROGRESSIVE_DOWNLOAD = "PROGRESSIVE_DOWNLOAD"
     val NORMAL               = "NORMAL"
 
-    val values = IndexedSeq(PROGRESSIVE_DOWNLOAD, NORMAL)
+    val values = js.Object.freeze(js.Array(PROGRESSIVE_DOWNLOAD, NORMAL))
   }
 
   /**
@@ -3277,7 +3284,7 @@ package mediaconvert {
     val UPCONVERT = "UPCONVERT"
     val DISABLED  = "DISABLED"
 
-    val values = IndexedSeq(UPCONVERT, DISABLED)
+    val values = js.Object.freeze(js.Array(UPCONVERT, DISABLED))
   }
 
   /**
@@ -3312,7 +3319,7 @@ package mediaconvert {
     val HANS      = "HANS"
     val HANT      = "HANT"
 
-    val values = IndexedSeq(AUTOMATIC, HANS, HANT)
+    val values = js.Object.freeze(js.Array(AUTOMATIC, HANS, HANT))
   }
 
   /**
@@ -3481,7 +3488,7 @@ package mediaconvert {
     val HIGHER = "HIGHER"
     val MAX    = "MAX"
 
-    val values = IndexedSeq(OFF, LOW, MEDIUM, HIGH, HIGHER, MAX)
+    val values = js.Object.freeze(js.Array(OFF, LOW, MEDIUM, HIGH, HIGHER, MAX))
   }
 
   /**
@@ -3506,24 +3513,26 @@ package mediaconvert {
     val LEVEL_5_1 = "LEVEL_5_1"
     val LEVEL_5_2 = "LEVEL_5_2"
 
-    val values = IndexedSeq(
-      AUTO,
-      LEVEL_1,
-      LEVEL_1_1,
-      LEVEL_1_2,
-      LEVEL_1_3,
-      LEVEL_2,
-      LEVEL_2_1,
-      LEVEL_2_2,
-      LEVEL_3,
-      LEVEL_3_1,
-      LEVEL_3_2,
-      LEVEL_4,
-      LEVEL_4_1,
-      LEVEL_4_2,
-      LEVEL_5,
-      LEVEL_5_1,
-      LEVEL_5_2
+    val values = js.Object.freeze(
+      js.Array(
+        AUTO,
+        LEVEL_1,
+        LEVEL_1_1,
+        LEVEL_1_2,
+        LEVEL_1_3,
+        LEVEL_2,
+        LEVEL_2_1,
+        LEVEL_2_2,
+        LEVEL_3,
+        LEVEL_3_1,
+        LEVEL_3_2,
+        LEVEL_4,
+        LEVEL_4_1,
+        LEVEL_4_2,
+        LEVEL_5,
+        LEVEL_5_1,
+        LEVEL_5_2
+      )
     )
   }
 
@@ -3538,7 +3547,7 @@ package mediaconvert {
     val HIGH_422_10BIT = "HIGH_422_10BIT"
     val MAIN           = "MAIN"
 
-    val values = IndexedSeq(BASELINE, HIGH, HIGH_10BIT, HIGH_422, HIGH_422_10BIT, MAIN)
+    val values = js.Object.freeze(js.Array(BASELINE, HIGH, HIGH_10BIT, HIGH_422, HIGH_422_10BIT, MAIN))
   }
 
   /**
@@ -3548,7 +3557,7 @@ package mediaconvert {
     val ADAPTIVE = "ADAPTIVE"
     val STATIC   = "STATIC"
 
-    val values = IndexedSeq(ADAPTIVE, STATIC)
+    val values = js.Object.freeze(js.Array(ADAPTIVE, STATIC))
   }
 
   /**
@@ -3558,7 +3567,7 @@ package mediaconvert {
     val CABAC = "CABAC"
     val CAVLC = "CAVLC"
 
-    val values = IndexedSeq(CABAC, CAVLC)
+    val values = js.Object.freeze(js.Array(CABAC, CAVLC))
   }
 
   /**
@@ -3568,7 +3577,7 @@ package mediaconvert {
     val PAFF        = "PAFF"
     val FORCE_FIELD = "FORCE_FIELD"
 
-    val values = IndexedSeq(PAFF, FORCE_FIELD)
+    val values = js.Object.freeze(js.Array(PAFF, FORCE_FIELD))
   }
 
   /**
@@ -3578,7 +3587,7 @@ package mediaconvert {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -3588,7 +3597,7 @@ package mediaconvert {
     val INITIALIZE_FROM_SOURCE = "INITIALIZE_FROM_SOURCE"
     val SPECIFIED              = "SPECIFIED"
 
-    val values = IndexedSeq(INITIALIZE_FROM_SOURCE, SPECIFIED)
+    val values = js.Object.freeze(js.Array(INITIALIZE_FROM_SOURCE, SPECIFIED))
   }
 
   /**
@@ -3598,7 +3607,7 @@ package mediaconvert {
     val DUPLICATE_DROP = "DUPLICATE_DROP"
     val INTERPOLATE    = "INTERPOLATE"
 
-    val values = IndexedSeq(DUPLICATE_DROP, INTERPOLATE)
+    val values = js.Object.freeze(js.Array(DUPLICATE_DROP, INTERPOLATE))
   }
 
   /**
@@ -3608,7 +3617,7 @@ package mediaconvert {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -3618,7 +3627,7 @@ package mediaconvert {
     val FRAMES  = "FRAMES"
     val SECONDS = "SECONDS"
 
-    val values = IndexedSeq(FRAMES, SECONDS)
+    val values = js.Object.freeze(js.Array(FRAMES, SECONDS))
   }
 
   /**
@@ -3633,7 +3642,7 @@ package mediaconvert {
     val FOLLOW_TOP_FIELD    = "FOLLOW_TOP_FIELD"
     val FOLLOW_BOTTOM_FIELD = "FOLLOW_BOTTOM_FIELD"
 
-    val values = IndexedSeq(PROGRESSIVE, TOP_FIELD, BOTTOM_FIELD, FOLLOW_TOP_FIELD, FOLLOW_BOTTOM_FIELD)
+    val values = js.Object.freeze(js.Array(PROGRESSIVE, TOP_FIELD, BOTTOM_FIELD, FOLLOW_TOP_FIELD, FOLLOW_BOTTOM_FIELD))
   }
 
   /**
@@ -3643,7 +3652,7 @@ package mediaconvert {
     val INITIALIZE_FROM_SOURCE = "INITIALIZE_FROM_SOURCE"
     val SPECIFIED              = "SPECIFIED"
 
-    val values = IndexedSeq(INITIALIZE_FROM_SOURCE, SPECIFIED)
+    val values = js.Object.freeze(js.Array(INITIALIZE_FROM_SOURCE, SPECIFIED))
   }
 
   /**
@@ -3654,7 +3663,7 @@ package mediaconvert {
     val SINGLE_PASS_HQ = "SINGLE_PASS_HQ"
     val MULTI_PASS_HQ  = "MULTI_PASS_HQ"
 
-    val values = IndexedSeq(SINGLE_PASS, SINGLE_PASS_HQ, MULTI_PASS_HQ)
+    val values = js.Object.freeze(js.Array(SINGLE_PASS, SINGLE_PASS_HQ, MULTI_PASS_HQ))
   }
 
   /**
@@ -3686,7 +3695,7 @@ package mediaconvert {
     val CBR  = "CBR"
     val QVBR = "QVBR"
 
-    val values = IndexedSeq(VBR, CBR, QVBR)
+    val values = js.Object.freeze(js.Array(VBR, CBR, QVBR))
   }
 
   /**
@@ -3696,7 +3705,7 @@ package mediaconvert {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -3707,7 +3716,7 @@ package mediaconvert {
     val ENABLED              = "ENABLED"
     val TRANSITION_DETECTION = "TRANSITION_DETECTION"
 
-    val values = IndexedSeq(DISABLED, ENABLED, TRANSITION_DETECTION)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED, TRANSITION_DETECTION))
   }
 
   /**
@@ -3857,7 +3866,7 @@ package mediaconvert {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -3867,7 +3876,7 @@ package mediaconvert {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -3877,7 +3886,7 @@ package mediaconvert {
     val DEFAULT = "DEFAULT"
     val RP2027  = "RP2027"
 
-    val values = IndexedSeq(DEFAULT, RP2027)
+    val values = js.Object.freeze(js.Array(DEFAULT, RP2027))
   }
 
   /**
@@ -3888,7 +3897,7 @@ package mediaconvert {
     val SOFT = "SOFT"
     val HARD = "HARD"
 
-    val values = IndexedSeq(NONE, SOFT, HARD)
+    val values = js.Object.freeze(js.Array(NONE, SOFT, HARD))
   }
 
   /**
@@ -3898,7 +3907,7 @@ package mediaconvert {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -3908,7 +3917,7 @@ package mediaconvert {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -3922,7 +3931,7 @@ package mediaconvert {
     val HIGHER = "HIGHER"
     val MAX    = "MAX"
 
-    val values = IndexedSeq(OFF, LOW, MEDIUM, HIGH, HIGHER, MAX)
+    val values = js.Object.freeze(js.Array(OFF, LOW, MEDIUM, HIGH, HIGHER, MAX))
   }
 
   /**
@@ -3932,7 +3941,7 @@ package mediaconvert {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -3954,21 +3963,23 @@ package mediaconvert {
     val LEVEL_6_1 = "LEVEL_6_1"
     val LEVEL_6_2 = "LEVEL_6_2"
 
-    val values = IndexedSeq(
-      AUTO,
-      LEVEL_1,
-      LEVEL_2,
-      LEVEL_2_1,
-      LEVEL_3,
-      LEVEL_3_1,
-      LEVEL_4,
-      LEVEL_4_1,
-      LEVEL_5,
-      LEVEL_5_1,
-      LEVEL_5_2,
-      LEVEL_6,
-      LEVEL_6_1,
-      LEVEL_6_2
+    val values = js.Object.freeze(
+      js.Array(
+        AUTO,
+        LEVEL_1,
+        LEVEL_2,
+        LEVEL_2_1,
+        LEVEL_3,
+        LEVEL_3_1,
+        LEVEL_4,
+        LEVEL_4_1,
+        LEVEL_5,
+        LEVEL_5_1,
+        LEVEL_5_2,
+        LEVEL_6,
+        LEVEL_6_1,
+        LEVEL_6_2
+      )
     )
   }
 
@@ -3985,15 +3996,17 @@ package mediaconvert {
     val MAIN_422_10BIT_MAIN = "MAIN_422_10BIT_MAIN"
     val MAIN_422_10BIT_HIGH = "MAIN_422_10BIT_HIGH"
 
-    val values = IndexedSeq(
-      MAIN_MAIN,
-      MAIN_HIGH,
-      MAIN10_MAIN,
-      MAIN10_HIGH,
-      MAIN_422_8BIT_MAIN,
-      MAIN_422_8BIT_HIGH,
-      MAIN_422_10BIT_MAIN,
-      MAIN_422_10BIT_HIGH
+    val values = js.Object.freeze(
+      js.Array(
+        MAIN_MAIN,
+        MAIN_HIGH,
+        MAIN10_MAIN,
+        MAIN10_HIGH,
+        MAIN_422_8BIT_MAIN,
+        MAIN_422_8BIT_HIGH,
+        MAIN_422_10BIT_MAIN,
+        MAIN_422_10BIT_HIGH
+      )
     )
   }
 
@@ -4004,7 +4017,7 @@ package mediaconvert {
     val ADAPTIVE = "ADAPTIVE"
     val STATIC   = "STATIC"
 
-    val values = IndexedSeq(ADAPTIVE, STATIC)
+    val values = js.Object.freeze(js.Array(ADAPTIVE, STATIC))
   }
 
   /**
@@ -4014,7 +4027,7 @@ package mediaconvert {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -4024,7 +4037,7 @@ package mediaconvert {
     val INITIALIZE_FROM_SOURCE = "INITIALIZE_FROM_SOURCE"
     val SPECIFIED              = "SPECIFIED"
 
-    val values = IndexedSeq(INITIALIZE_FROM_SOURCE, SPECIFIED)
+    val values = js.Object.freeze(js.Array(INITIALIZE_FROM_SOURCE, SPECIFIED))
   }
 
   /**
@@ -4034,7 +4047,7 @@ package mediaconvert {
     val DUPLICATE_DROP = "DUPLICATE_DROP"
     val INTERPOLATE    = "INTERPOLATE"
 
-    val values = IndexedSeq(DUPLICATE_DROP, INTERPOLATE)
+    val values = js.Object.freeze(js.Array(DUPLICATE_DROP, INTERPOLATE))
   }
 
   /**
@@ -4044,7 +4057,7 @@ package mediaconvert {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -4054,7 +4067,7 @@ package mediaconvert {
     val FRAMES  = "FRAMES"
     val SECONDS = "SECONDS"
 
-    val values = IndexedSeq(FRAMES, SECONDS)
+    val values = js.Object.freeze(js.Array(FRAMES, SECONDS))
   }
 
   /**
@@ -4067,7 +4080,7 @@ package mediaconvert {
     val FOLLOW_TOP_FIELD    = "FOLLOW_TOP_FIELD"
     val FOLLOW_BOTTOM_FIELD = "FOLLOW_BOTTOM_FIELD"
 
-    val values = IndexedSeq(PROGRESSIVE, TOP_FIELD, BOTTOM_FIELD, FOLLOW_TOP_FIELD, FOLLOW_BOTTOM_FIELD)
+    val values = js.Object.freeze(js.Array(PROGRESSIVE, TOP_FIELD, BOTTOM_FIELD, FOLLOW_TOP_FIELD, FOLLOW_BOTTOM_FIELD))
   }
 
   /**
@@ -4077,7 +4090,7 @@ package mediaconvert {
     val INITIALIZE_FROM_SOURCE = "INITIALIZE_FROM_SOURCE"
     val SPECIFIED              = "SPECIFIED"
 
-    val values = IndexedSeq(INITIALIZE_FROM_SOURCE, SPECIFIED)
+    val values = js.Object.freeze(js.Array(INITIALIZE_FROM_SOURCE, SPECIFIED))
   }
 
   /**
@@ -4088,7 +4101,7 @@ package mediaconvert {
     val SINGLE_PASS_HQ = "SINGLE_PASS_HQ"
     val MULTI_PASS_HQ  = "MULTI_PASS_HQ"
 
-    val values = IndexedSeq(SINGLE_PASS, SINGLE_PASS_HQ, MULTI_PASS_HQ)
+    val values = js.Object.freeze(js.Array(SINGLE_PASS, SINGLE_PASS_HQ, MULTI_PASS_HQ))
   }
 
   /**
@@ -4120,7 +4133,7 @@ package mediaconvert {
     val CBR  = "CBR"
     val QVBR = "QVBR"
 
-    val values = IndexedSeq(VBR, CBR, QVBR)
+    val values = js.Object.freeze(js.Array(VBR, CBR, QVBR))
   }
 
   /**
@@ -4131,7 +4144,7 @@ package mediaconvert {
     val ADAPTIVE = "ADAPTIVE"
     val OFF      = "OFF"
 
-    val values = IndexedSeq(DEFAULT, ADAPTIVE, OFF)
+    val values = js.Object.freeze(js.Array(DEFAULT, ADAPTIVE, OFF))
   }
 
   /**
@@ -4142,7 +4155,7 @@ package mediaconvert {
     val ENABLED              = "ENABLED"
     val TRANSITION_DETECTION = "TRANSITION_DETECTION"
 
-    val values = IndexedSeq(DISABLED, ENABLED, TRANSITION_DETECTION)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED, TRANSITION_DETECTION))
   }
 
   /**
@@ -4296,7 +4309,7 @@ package mediaconvert {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -4306,7 +4319,7 @@ package mediaconvert {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -4317,7 +4330,7 @@ package mediaconvert {
     val SOFT = "SOFT"
     val HARD = "HARD"
 
-    val values = IndexedSeq(NONE, SOFT, HARD)
+    val values = js.Object.freeze(js.Array(NONE, SOFT, HARD))
   }
 
   /**
@@ -4327,7 +4340,7 @@ package mediaconvert {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -4337,7 +4350,7 @@ package mediaconvert {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -4347,7 +4360,7 @@ package mediaconvert {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -4357,7 +4370,7 @@ package mediaconvert {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -4367,7 +4380,7 @@ package mediaconvert {
     val HVC1 = "HVC1"
     val HEV1 = "HEV1"
 
-    val values = IndexedSeq(HVC1, HEV1)
+    val values = js.Object.freeze(js.Array(HVC1, HEV1))
   }
 
   /**
@@ -4425,7 +4438,7 @@ package mediaconvert {
     val ELEMENTAL        = "ELEMENTAL"
     val ELEMENTAL_SCTE35 = "ELEMENTAL_SCTE35"
 
-    val values = IndexedSeq(ELEMENTAL, ELEMENTAL_SCTE35)
+    val values = js.Object.freeze(js.Array(ELEMENTAL, ELEMENTAL_SCTE35))
   }
 
   /**
@@ -4435,7 +4448,7 @@ package mediaconvert {
     val AUTOMATIC = "AUTOMATIC"
     val M2TS      = "M2TS"
 
-    val values = IndexedSeq(AUTOMATIC, M2TS)
+    val values = js.Object.freeze(js.Array(AUTOMATIC, M2TS))
   }
 
   /**
@@ -4447,11 +4460,13 @@ package mediaconvert {
     val ALTERNATE_AUDIO_NOT_AUTO_SELECT     = "ALTERNATE_AUDIO_NOT_AUTO_SELECT"
     val AUDIO_ONLY_VARIANT_STREAM           = "AUDIO_ONLY_VARIANT_STREAM"
 
-    val values = IndexedSeq(
-      ALTERNATE_AUDIO_AUTO_SELECT_DEFAULT,
-      ALTERNATE_AUDIO_AUTO_SELECT,
-      ALTERNATE_AUDIO_NOT_AUTO_SELECT,
-      AUDIO_ONLY_VARIANT_STREAM
+    val values = js.Object.freeze(
+      js.Array(
+        ALTERNATE_AUDIO_AUTO_SELECT_DEFAULT,
+        ALTERNATE_AUDIO_AUTO_SELECT,
+        ALTERNATE_AUDIO_NOT_AUTO_SELECT,
+        AUDIO_ONLY_VARIANT_STREAM
+      )
     )
   }
 
@@ -4490,7 +4505,7 @@ package mediaconvert {
     val OMIT   = "OMIT"
     val NONE   = "NONE"
 
-    val values = IndexedSeq(INSERT, OMIT, NONE)
+    val values = js.Object.freeze(js.Array(INSERT, OMIT, NONE))
   }
 
   /**
@@ -4500,7 +4515,7 @@ package mediaconvert {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -4510,7 +4525,7 @@ package mediaconvert {
     val RFC_6381 = "RFC_6381"
     val RFC_4281 = "RFC_4281"
 
-    val values = IndexedSeq(RFC_6381, RFC_4281)
+    val values = js.Object.freeze(js.Array(RFC_6381, RFC_4281))
   }
 
   /**
@@ -4520,7 +4535,7 @@ package mediaconvert {
     val SINGLE_DIRECTORY        = "SINGLE_DIRECTORY"
     val SUBDIRECTORY_PER_STREAM = "SUBDIRECTORY_PER_STREAM"
 
-    val values = IndexedSeq(SINGLE_DIRECTORY, SUBDIRECTORY_PER_STREAM)
+    val values = js.Object.freeze(js.Array(SINGLE_DIRECTORY, SUBDIRECTORY_PER_STREAM))
   }
 
   /**
@@ -4570,7 +4585,7 @@ package mediaconvert {
     val AES128     = "AES128"
     val SAMPLE_AES = "SAMPLE_AES"
 
-    val values = IndexedSeq(AES128, SAMPLE_AES)
+    val values = js.Object.freeze(js.Array(AES128, SAMPLE_AES))
   }
 
   /**
@@ -4667,7 +4682,7 @@ package mediaconvert {
     val INCLUDE = "INCLUDE"
     val EXCLUDE = "EXCLUDE"
 
-    val values = IndexedSeq(INCLUDE, EXCLUDE)
+    val values = js.Object.freeze(js.Array(INCLUDE, EXCLUDE))
   }
 
   /**
@@ -4677,7 +4692,7 @@ package mediaconvert {
     val INCLUDE = "INCLUDE"
     val EXCLUDE = "EXCLUDE"
 
-    val values = IndexedSeq(INCLUDE, EXCLUDE)
+    val values = js.Object.freeze(js.Array(INCLUDE, EXCLUDE))
   }
 
   /**
@@ -4687,7 +4702,7 @@ package mediaconvert {
     val SPEKE      = "SPEKE"
     val STATIC_KEY = "STATIC_KEY"
 
-    val values = IndexedSeq(SPEKE, STATIC_KEY)
+    val values = js.Object.freeze(js.Array(SPEKE, STATIC_KEY))
   }
 
   /**
@@ -4697,7 +4712,7 @@ package mediaconvert {
     val GZIP = "GZIP"
     val NONE = "NONE"
 
-    val values = IndexedSeq(GZIP, NONE)
+    val values = js.Object.freeze(js.Array(GZIP, NONE))
   }
 
   /**
@@ -4707,7 +4722,7 @@ package mediaconvert {
     val FLOATING_POINT = "FLOATING_POINT"
     val INTEGER        = "INTEGER"
 
-    val values = IndexedSeq(FLOATING_POINT, INTEGER)
+    val values = js.Object.freeze(js.Array(FLOATING_POINT, INTEGER))
   }
 
   /**
@@ -4717,7 +4732,7 @@ package mediaconvert {
     val ENABLED  = "ENABLED"
     val DISABLED = "DISABLED"
 
-    val values = IndexedSeq(ENABLED, DISABLED)
+    val values = js.Object.freeze(js.Array(ENABLED, DISABLED))
   }
 
   /**
@@ -4727,7 +4742,7 @@ package mediaconvert {
     val MANIFESTS_AND_SEGMENTS = "MANIFESTS_AND_SEGMENTS"
     val SEGMENTS_ONLY          = "SEGMENTS_ONLY"
 
-    val values = IndexedSeq(MANIFESTS_AND_SEGMENTS, SEGMENTS_ONLY)
+    val values = js.Object.freeze(js.Array(MANIFESTS_AND_SEGMENTS, SEGMENTS_ONLY))
   }
 
   /**
@@ -4737,7 +4752,7 @@ package mediaconvert {
     val INCLUDE = "INCLUDE"
     val EXCLUDE = "EXCLUDE"
 
-    val values = IndexedSeq(INCLUDE, EXCLUDE)
+    val values = js.Object.freeze(js.Array(INCLUDE, EXCLUDE))
   }
 
   /**
@@ -4747,7 +4762,7 @@ package mediaconvert {
     val SINGLE_FILE     = "SINGLE_FILE"
     val SEGMENTED_FILES = "SEGMENTED_FILES"
 
-    val values = IndexedSeq(SINGLE_FILE, SEGMENTED_FILES)
+    val values = js.Object.freeze(js.Array(SINGLE_FILE, SEGMENTED_FILES))
   }
 
   /**
@@ -4790,7 +4805,7 @@ package mediaconvert {
     val INCLUDE = "INCLUDE"
     val EXCLUDE = "EXCLUDE"
 
-    val values = IndexedSeq(INCLUDE, EXCLUDE)
+    val values = js.Object.freeze(js.Array(INCLUDE, EXCLUDE))
   }
 
   /**
@@ -4801,7 +4816,7 @@ package mediaconvert {
     val PRIV = "PRIV"
     val TDRL = "TDRL"
 
-    val values = IndexedSeq(NONE, PRIV, TDRL)
+    val values = js.Object.freeze(js.Array(NONE, PRIV, TDRL))
   }
 
   /**
@@ -4944,7 +4959,7 @@ package mediaconvert {
     val ENABLED  = "ENABLED"
     val DISABLED = "DISABLED"
 
-    val values = IndexedSeq(ENABLED, DISABLED)
+    val values = js.Object.freeze(js.Array(ENABLED, DISABLED))
   }
 
   /**
@@ -4981,7 +4996,7 @@ package mediaconvert {
     val ENABLED  = "ENABLED"
     val DISABLED = "DISABLED"
 
-    val values = IndexedSeq(ENABLED, DISABLED)
+    val values = js.Object.freeze(js.Array(ENABLED, DISABLED))
   }
 
   /**
@@ -4992,7 +5007,7 @@ package mediaconvert {
     val DISABLE = "DISABLE"
     val FORCE   = "FORCE"
 
-    val values = IndexedSeq(AUTO, DISABLE, FORCE)
+    val values = js.Object.freeze(js.Array(AUTO, DISABLE, FORCE))
   }
 
   /**
@@ -5002,7 +5017,7 @@ package mediaconvert {
     val IGNORE_PSI = "IGNORE_PSI"
     val USE_PSI    = "USE_PSI"
 
-    val values = IndexedSeq(IGNORE_PSI, USE_PSI)
+    val values = js.Object.freeze(js.Array(IGNORE_PSI, USE_PSI))
   }
 
   /**
@@ -5015,7 +5030,7 @@ package mediaconvert {
     val DEGREES_270 = "DEGREES_270"
     val AUTO        = "AUTO"
 
-    val values = IndexedSeq(DEGREE_0, DEGREES_90, DEGREES_180, DEGREES_270, AUTO)
+    val values = js.Object.freeze(js.Array(DEGREE_0, DEGREES_90, DEGREES_180, DEGREES_270, AUTO))
   }
 
   /**
@@ -5086,7 +5101,7 @@ package mediaconvert {
     val ZEROBASED      = "ZEROBASED"
     val SPECIFIEDSTART = "SPECIFIEDSTART"
 
-    val values = IndexedSeq(EMBEDDED, ZEROBASED, SPECIFIEDSTART)
+    val values = js.Object.freeze(js.Array(EMBEDDED, ZEROBASED, SPECIFIEDSTART))
   }
 
   /**
@@ -5222,7 +5237,7 @@ package mediaconvert {
     val TRANSCODING = "TRANSCODING"
     val UPLOADING   = "UPLOADING"
 
-    val values = IndexedSeq(PROBING, TRANSCODING, UPLOADING)
+    val values = js.Object.freeze(js.Array(PROBING, TRANSCODING, UPLOADING))
   }
 
   /**
@@ -5277,7 +5292,7 @@ package mediaconvert {
     val CANCELED    = "CANCELED"
     val ERROR       = "ERROR"
 
-    val values = IndexedSeq(SUBMITTED, PROGRESSING, COMPLETE, CANCELED, ERROR)
+    val values = js.Object.freeze(js.Array(SUBMITTED, PROGRESSING, COMPLETE, CANCELED, ERROR))
   }
 
   /**
@@ -5341,7 +5356,7 @@ package mediaconvert {
     val CREATION_DATE = "CREATION_DATE"
     val SYSTEM        = "SYSTEM"
 
-    val values = IndexedSeq(NAME, CREATION_DATE, SYSTEM)
+    val values = js.Object.freeze(js.Array(NAME, CREATION_DATE, SYSTEM))
   }
 
   /**
@@ -5582,198 +5597,200 @@ package mediaconvert {
     val QPC = "QPC"
     val TNG = "TNG"
 
-    val values = IndexedSeq(
-      ENG,
-      SPA,
-      FRA,
-      DEU,
-      GER,
-      ZHO,
-      ARA,
-      HIN,
-      JPN,
-      RUS,
-      POR,
-      ITA,
-      URD,
-      VIE,
-      KOR,
-      PAN,
-      ABK,
-      AAR,
-      AFR,
-      AKA,
-      SQI,
-      AMH,
-      ARG,
-      HYE,
-      ASM,
-      AVA,
-      AVE,
-      AYM,
-      AZE,
-      BAM,
-      BAK,
-      EUS,
-      BEL,
-      BEN,
-      BIH,
-      BIS,
-      BOS,
-      BRE,
-      BUL,
-      MYA,
-      CAT,
-      KHM,
-      CHA,
-      CHE,
-      NYA,
-      CHU,
-      CHV,
-      COR,
-      COS,
-      CRE,
-      HRV,
-      CES,
-      DAN,
-      DIV,
-      NLD,
-      DZO,
-      ENM,
-      EPO,
-      EST,
-      EWE,
-      FAO,
-      FIJ,
-      FIN,
-      FRM,
-      FUL,
-      GLA,
-      GLG,
-      LUG,
-      KAT,
-      ELL,
-      GRN,
-      GUJ,
-      HAT,
-      HAU,
-      HEB,
-      HER,
-      HMO,
-      HUN,
-      ISL,
-      IDO,
-      IBO,
-      IND,
-      INA,
-      ILE,
-      IKU,
-      IPK,
-      GLE,
-      JAV,
-      KAL,
-      KAN,
-      KAU,
-      KAS,
-      KAZ,
-      KIK,
-      KIN,
-      KIR,
-      KOM,
-      KON,
-      KUA,
-      KUR,
-      LAO,
-      LAT,
-      LAV,
-      LIM,
-      LIN,
-      LIT,
-      LUB,
-      LTZ,
-      MKD,
-      MLG,
-      MSA,
-      MAL,
-      MLT,
-      GLV,
-      MRI,
-      MAR,
-      MAH,
-      MON,
-      NAU,
-      NAV,
-      NDE,
-      NBL,
-      NDO,
-      NEP,
-      SME,
-      NOR,
-      NOB,
-      NNO,
-      OCI,
-      OJI,
-      ORI,
-      ORM,
-      OSS,
-      PLI,
-      FAS,
-      POL,
-      PUS,
-      QUE,
-      QAA,
-      RON,
-      ROH,
-      RUN,
-      SMO,
-      SAG,
-      SAN,
-      SRD,
-      SRB,
-      SNA,
-      III,
-      SND,
-      SIN,
-      SLK,
-      SLV,
-      SOM,
-      SOT,
-      SUN,
-      SWA,
-      SSW,
-      SWE,
-      TGL,
-      TAH,
-      TGK,
-      TAM,
-      TAT,
-      TEL,
-      THA,
-      BOD,
-      TIR,
-      TON,
-      TSO,
-      TSN,
-      TUR,
-      TUK,
-      TWI,
-      UIG,
-      UKR,
-      UZB,
-      VEN,
-      VOL,
-      WLN,
-      CYM,
-      FRY,
-      WOL,
-      XHO,
-      YID,
-      YOR,
-      ZHA,
-      ZUL,
-      ORJ,
-      QPC,
-      TNG
+    val values = js.Object.freeze(
+      js.Array(
+        ENG,
+        SPA,
+        FRA,
+        DEU,
+        GER,
+        ZHO,
+        ARA,
+        HIN,
+        JPN,
+        RUS,
+        POR,
+        ITA,
+        URD,
+        VIE,
+        KOR,
+        PAN,
+        ABK,
+        AAR,
+        AFR,
+        AKA,
+        SQI,
+        AMH,
+        ARG,
+        HYE,
+        ASM,
+        AVA,
+        AVE,
+        AYM,
+        AZE,
+        BAM,
+        BAK,
+        EUS,
+        BEL,
+        BEN,
+        BIH,
+        BIS,
+        BOS,
+        BRE,
+        BUL,
+        MYA,
+        CAT,
+        KHM,
+        CHA,
+        CHE,
+        NYA,
+        CHU,
+        CHV,
+        COR,
+        COS,
+        CRE,
+        HRV,
+        CES,
+        DAN,
+        DIV,
+        NLD,
+        DZO,
+        ENM,
+        EPO,
+        EST,
+        EWE,
+        FAO,
+        FIJ,
+        FIN,
+        FRM,
+        FUL,
+        GLA,
+        GLG,
+        LUG,
+        KAT,
+        ELL,
+        GRN,
+        GUJ,
+        HAT,
+        HAU,
+        HEB,
+        HER,
+        HMO,
+        HUN,
+        ISL,
+        IDO,
+        IBO,
+        IND,
+        INA,
+        ILE,
+        IKU,
+        IPK,
+        GLE,
+        JAV,
+        KAL,
+        KAN,
+        KAU,
+        KAS,
+        KAZ,
+        KIK,
+        KIN,
+        KIR,
+        KOM,
+        KON,
+        KUA,
+        KUR,
+        LAO,
+        LAT,
+        LAV,
+        LIM,
+        LIN,
+        LIT,
+        LUB,
+        LTZ,
+        MKD,
+        MLG,
+        MSA,
+        MAL,
+        MLT,
+        GLV,
+        MRI,
+        MAR,
+        MAH,
+        MON,
+        NAU,
+        NAV,
+        NDE,
+        NBL,
+        NDO,
+        NEP,
+        SME,
+        NOR,
+        NOB,
+        NNO,
+        OCI,
+        OJI,
+        ORI,
+        ORM,
+        OSS,
+        PLI,
+        FAS,
+        POL,
+        PUS,
+        QUE,
+        QAA,
+        RON,
+        ROH,
+        RUN,
+        SMO,
+        SAG,
+        SAN,
+        SRD,
+        SRB,
+        SNA,
+        III,
+        SND,
+        SIN,
+        SLK,
+        SLV,
+        SOM,
+        SOT,
+        SUN,
+        SWA,
+        SSW,
+        SWE,
+        TGL,
+        TAH,
+        TGK,
+        TAM,
+        TAT,
+        TEL,
+        THA,
+        BOD,
+        TIR,
+        TON,
+        TSO,
+        TSN,
+        TUR,
+        TUK,
+        TWI,
+        UIG,
+        UKR,
+        UZB,
+        VEN,
+        VOL,
+        WLN,
+        CYM,
+        FRY,
+        WOL,
+        XHO,
+        YID,
+        YOR,
+        ZHA,
+        ZUL,
+        ORJ,
+        QPC,
+        TNG
+      )
     )
   }
 
@@ -5993,7 +6010,7 @@ package mediaconvert {
     val DVB  = "DVB"
     val ATSC = "ATSC"
 
-    val values = IndexedSeq(DVB, ATSC)
+    val values = js.Object.freeze(js.Array(DVB, ATSC))
   }
 
   /**
@@ -6003,7 +6020,7 @@ package mediaconvert {
     val MULTIPLEX = "MULTIPLEX"
     val NONE      = "NONE"
 
-    val values = IndexedSeq(MULTIPLEX, NONE)
+    val values = js.Object.freeze(js.Array(MULTIPLEX, NONE))
   }
 
   /**
@@ -6013,7 +6030,7 @@ package mediaconvert {
     val VIDEO_AND_FIXED_INTERVALS = "VIDEO_AND_FIXED_INTERVALS"
     val VIDEO_INTERVAL            = "VIDEO_INTERVAL"
 
-    val values = IndexedSeq(VIDEO_AND_FIXED_INTERVALS, VIDEO_INTERVAL)
+    val values = js.Object.freeze(js.Array(VIDEO_AND_FIXED_INTERVALS, VIDEO_INTERVAL))
   }
 
   /**
@@ -6023,7 +6040,7 @@ package mediaconvert {
     val VIDEO_AND_AUDIO_PIDS = "VIDEO_AND_AUDIO_PIDS"
     val VIDEO_PID            = "VIDEO_PID"
 
-    val values = IndexedSeq(VIDEO_AND_AUDIO_PIDS, VIDEO_PID)
+    val values = js.Object.freeze(js.Array(VIDEO_AND_AUDIO_PIDS, VIDEO_PID))
   }
 
   /**
@@ -6033,7 +6050,7 @@ package mediaconvert {
     val INCLUDE = "INCLUDE"
     val EXCLUDE = "EXCLUDE"
 
-    val values = IndexedSeq(INCLUDE, EXCLUDE)
+    val values = js.Object.freeze(js.Array(INCLUDE, EXCLUDE))
   }
 
   /**
@@ -6043,7 +6060,7 @@ package mediaconvert {
     val FORCE   = "FORCE"
     val DEFAULT = "DEFAULT"
 
-    val values = IndexedSeq(FORCE, DEFAULT)
+    val values = js.Object.freeze(js.Array(FORCE, DEFAULT))
   }
 
   /**
@@ -6053,7 +6070,7 @@ package mediaconvert {
     val INSERT = "INSERT"
     val NONE   = "NONE"
 
-    val values = IndexedSeq(INSERT, NONE)
+    val values = js.Object.freeze(js.Array(INSERT, NONE))
   }
 
   /**
@@ -6063,7 +6080,7 @@ package mediaconvert {
     val PCR_EVERY_PES_PACKET  = "PCR_EVERY_PES_PACKET"
     val CONFIGURED_PCR_PERIOD = "CONFIGURED_PCR_PERIOD"
 
-    val values = IndexedSeq(PCR_EVERY_PES_PACKET, CONFIGURED_PCR_PERIOD)
+    val values = js.Object.freeze(js.Array(PCR_EVERY_PES_PACKET, CONFIGURED_PCR_PERIOD))
   }
 
   /**
@@ -6073,7 +6090,7 @@ package mediaconvert {
     val VBR = "VBR"
     val CBR = "CBR"
 
-    val values = IndexedSeq(VBR, CBR)
+    val values = js.Object.freeze(js.Array(VBR, CBR))
   }
 
   /**
@@ -6101,7 +6118,7 @@ package mediaconvert {
     val PASSTHROUGH = "PASSTHROUGH"
     val NONE        = "NONE"
 
-    val values = IndexedSeq(PASSTHROUGH, NONE)
+    val values = js.Object.freeze(js.Array(PASSTHROUGH, NONE))
   }
 
   /**
@@ -6115,7 +6132,7 @@ package mediaconvert {
     val EBP          = "EBP"
     val EBP_LEGACY   = "EBP_LEGACY"
 
-    val values = IndexedSeq(NONE, RAI_SEGSTART, RAI_ADAPT, PSI_SEGSTART, EBP, EBP_LEGACY)
+    val values = js.Object.freeze(js.Array(NONE, RAI_SEGSTART, RAI_ADAPT, PSI_SEGSTART, EBP, EBP_LEGACY))
   }
 
   /**
@@ -6125,7 +6142,7 @@ package mediaconvert {
     val MAINTAIN_CADENCE = "MAINTAIN_CADENCE"
     val RESET_CADENCE    = "RESET_CADENCE"
 
-    val values = IndexedSeq(MAINTAIN_CADENCE, RESET_CADENCE)
+    val values = js.Object.freeze(js.Array(MAINTAIN_CADENCE, RESET_CADENCE))
   }
 
   /**
@@ -6258,7 +6275,7 @@ package mediaconvert {
     val INSERT = "INSERT"
     val NONE   = "NONE"
 
-    val values = IndexedSeq(INSERT, NONE)
+    val values = js.Object.freeze(js.Array(INSERT, NONE))
   }
 
   /**
@@ -6268,7 +6285,7 @@ package mediaconvert {
     val PCR_EVERY_PES_PACKET  = "PCR_EVERY_PES_PACKET"
     val CONFIGURED_PCR_PERIOD = "CONFIGURED_PCR_PERIOD"
 
-    val values = IndexedSeq(PCR_EVERY_PES_PACKET, CONFIGURED_PCR_PERIOD)
+    val values = js.Object.freeze(js.Array(PCR_EVERY_PES_PACKET, CONFIGURED_PCR_PERIOD))
   }
 
   /**
@@ -6278,7 +6295,7 @@ package mediaconvert {
     val PASSTHROUGH = "PASSTHROUGH"
     val NONE        = "NONE"
 
-    val values = IndexedSeq(PASSTHROUGH, NONE)
+    val values = js.Object.freeze(js.Array(PASSTHROUGH, NONE))
   }
 
   /**
@@ -6405,7 +6422,7 @@ package mediaconvert {
     val MOV = "MOV"
     val PNG = "PNG"
 
-    val values = IndexedSeq(MOV, PNG)
+    val values = js.Object.freeze(js.Array(MOV, PNG))
   }
 
   /**
@@ -6436,7 +6453,7 @@ package mediaconvert {
     val ONCE   = "ONCE"
     val REPEAT = "REPEAT"
 
-    val values = IndexedSeq(ONCE, REPEAT)
+    val values = js.Object.freeze(js.Array(ONCE, REPEAT))
   }
 
   /**
@@ -6446,7 +6463,7 @@ package mediaconvert {
     val INCLUDE = "INCLUDE"
     val EXCLUDE = "EXCLUDE"
 
-    val values = IndexedSeq(INCLUDE, EXCLUDE)
+    val values = js.Object.freeze(js.Array(INCLUDE, EXCLUDE))
   }
 
   /**
@@ -6456,7 +6473,7 @@ package mediaconvert {
     val INCLUDE = "INCLUDE"
     val EXCLUDE = "EXCLUDE"
 
-    val values = IndexedSeq(INCLUDE, EXCLUDE)
+    val values = js.Object.freeze(js.Array(INCLUDE, EXCLUDE))
   }
 
   /**
@@ -6466,7 +6483,7 @@ package mediaconvert {
     val XDCAM = "XDCAM"
     val MPEG  = "MPEG"
 
-    val values = IndexedSeq(XDCAM, MPEG)
+    val values = js.Object.freeze(js.Array(XDCAM, MPEG))
   }
 
   /**
@@ -6476,7 +6493,7 @@ package mediaconvert {
     val OMNEON = "OMNEON"
     val NONE   = "NONE"
 
-    val values = IndexedSeq(OMNEON, NONE)
+    val values = js.Object.freeze(js.Array(OMNEON, NONE))
   }
 
   /**
@@ -6486,7 +6503,7 @@ package mediaconvert {
     val SELF_CONTAINED = "SELF_CONTAINED"
     val EXTERNAL       = "EXTERNAL"
 
-    val values = IndexedSeq(SELF_CONTAINED, EXTERNAL)
+    val values = js.Object.freeze(js.Array(SELF_CONTAINED, EXTERNAL))
   }
 
   /**
@@ -6550,7 +6567,7 @@ package mediaconvert {
     val INCLUDE = "INCLUDE"
     val EXCLUDE = "EXCLUDE"
 
-    val values = IndexedSeq(INCLUDE, EXCLUDE)
+    val values = js.Object.freeze(js.Array(INCLUDE, EXCLUDE))
   }
 
   /**
@@ -6560,7 +6577,7 @@ package mediaconvert {
     val INCLUDE = "INCLUDE"
     val EXCLUDE = "EXCLUDE"
 
-    val values = IndexedSeq(INCLUDE, EXCLUDE)
+    val values = js.Object.freeze(js.Array(INCLUDE, EXCLUDE))
   }
 
   /**
@@ -6570,7 +6587,7 @@ package mediaconvert {
     val PROGRESSIVE_DOWNLOAD = "PROGRESSIVE_DOWNLOAD"
     val NORMAL               = "NORMAL"
 
-    val values = IndexedSeq(PROGRESSIVE_DOWNLOAD, NORMAL)
+    val values = js.Object.freeze(js.Array(PROGRESSIVE_DOWNLOAD, NORMAL))
   }
 
   /**
@@ -6609,7 +6626,7 @@ package mediaconvert {
     val MEDIUM = "MEDIUM"
     val HIGH   = "HIGH"
 
-    val values = IndexedSeq(OFF, LOW, MEDIUM, HIGH)
+    val values = js.Object.freeze(js.Array(OFF, LOW, MEDIUM, HIGH))
   }
 
   /**
@@ -6622,7 +6639,7 @@ package mediaconvert {
     val HIGH1440 = "HIGH1440"
     val HIGH     = "HIGH"
 
-    val values = IndexedSeq(AUTO, LOW, MAIN, HIGH1440, HIGH)
+    val values = js.Object.freeze(js.Array(AUTO, LOW, MAIN, HIGH1440, HIGH))
   }
 
   /**
@@ -6632,7 +6649,7 @@ package mediaconvert {
     val MAIN        = "MAIN"
     val PROFILE_422 = "PROFILE_422"
 
-    val values = IndexedSeq(MAIN, PROFILE_422)
+    val values = js.Object.freeze(js.Array(MAIN, PROFILE_422))
   }
 
   /**
@@ -6642,7 +6659,7 @@ package mediaconvert {
     val ADAPTIVE = "ADAPTIVE"
     val STATIC   = "STATIC"
 
-    val values = IndexedSeq(ADAPTIVE, STATIC)
+    val values = js.Object.freeze(js.Array(ADAPTIVE, STATIC))
   }
 
   /**
@@ -6652,7 +6669,7 @@ package mediaconvert {
     val INITIALIZE_FROM_SOURCE = "INITIALIZE_FROM_SOURCE"
     val SPECIFIED              = "SPECIFIED"
 
-    val values = IndexedSeq(INITIALIZE_FROM_SOURCE, SPECIFIED)
+    val values = js.Object.freeze(js.Array(INITIALIZE_FROM_SOURCE, SPECIFIED))
   }
 
   /**
@@ -6662,7 +6679,7 @@ package mediaconvert {
     val DUPLICATE_DROP = "DUPLICATE_DROP"
     val INTERPOLATE    = "INTERPOLATE"
 
-    val values = IndexedSeq(DUPLICATE_DROP, INTERPOLATE)
+    val values = js.Object.freeze(js.Array(DUPLICATE_DROP, INTERPOLATE))
   }
 
   /**
@@ -6672,7 +6689,7 @@ package mediaconvert {
     val FRAMES  = "FRAMES"
     val SECONDS = "SECONDS"
 
-    val values = IndexedSeq(FRAMES, SECONDS)
+    val values = js.Object.freeze(js.Array(FRAMES, SECONDS))
   }
 
   /**
@@ -6687,7 +6704,7 @@ package mediaconvert {
     val FOLLOW_TOP_FIELD    = "FOLLOW_TOP_FIELD"
     val FOLLOW_BOTTOM_FIELD = "FOLLOW_BOTTOM_FIELD"
 
-    val values = IndexedSeq(PROGRESSIVE, TOP_FIELD, BOTTOM_FIELD, FOLLOW_TOP_FIELD, FOLLOW_BOTTOM_FIELD)
+    val values = js.Object.freeze(js.Array(PROGRESSIVE, TOP_FIELD, BOTTOM_FIELD, FOLLOW_TOP_FIELD, FOLLOW_BOTTOM_FIELD))
   }
 
   /**
@@ -6700,8 +6717,9 @@ package mediaconvert {
     val INTRA_DC_PRECISION_10 = "INTRA_DC_PRECISION_10"
     val INTRA_DC_PRECISION_11 = "INTRA_DC_PRECISION_11"
 
-    val values =
-      IndexedSeq(AUTO, INTRA_DC_PRECISION_8, INTRA_DC_PRECISION_9, INTRA_DC_PRECISION_10, INTRA_DC_PRECISION_11)
+    val values = js.Object.freeze(
+      js.Array(AUTO, INTRA_DC_PRECISION_8, INTRA_DC_PRECISION_9, INTRA_DC_PRECISION_10, INTRA_DC_PRECISION_11)
+    )
   }
 
   /**
@@ -6711,7 +6729,7 @@ package mediaconvert {
     val INITIALIZE_FROM_SOURCE = "INITIALIZE_FROM_SOURCE"
     val SPECIFIED              = "SPECIFIED"
 
-    val values = IndexedSeq(INITIALIZE_FROM_SOURCE, SPECIFIED)
+    val values = js.Object.freeze(js.Array(INITIALIZE_FROM_SOURCE, SPECIFIED))
   }
 
   /**
@@ -6721,7 +6739,7 @@ package mediaconvert {
     val SINGLE_PASS = "SINGLE_PASS"
     val MULTI_PASS  = "MULTI_PASS"
 
-    val values = IndexedSeq(SINGLE_PASS, MULTI_PASS)
+    val values = js.Object.freeze(js.Array(SINGLE_PASS, MULTI_PASS))
   }
 
   /**
@@ -6731,7 +6749,7 @@ package mediaconvert {
     val VBR = "VBR"
     val CBR = "CBR"
 
-    val values = IndexedSeq(VBR, CBR)
+    val values = js.Object.freeze(js.Array(VBR, CBR))
   }
 
   /**
@@ -6741,7 +6759,7 @@ package mediaconvert {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -6867,7 +6885,7 @@ package mediaconvert {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -6877,7 +6895,7 @@ package mediaconvert {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -6887,7 +6905,7 @@ package mediaconvert {
     val DEFAULT = "DEFAULT"
     val D_10    = "D_10"
 
-    val values = IndexedSeq(DEFAULT, D_10)
+    val values = js.Object.freeze(js.Array(DEFAULT, D_10))
   }
 
   /**
@@ -6898,7 +6916,7 @@ package mediaconvert {
     val SOFT = "SOFT"
     val HARD = "HARD"
 
-    val values = IndexedSeq(NONE, SOFT, HARD)
+    val values = js.Object.freeze(js.Array(NONE, SOFT, HARD))
   }
 
   /**
@@ -6908,7 +6926,7 @@ package mediaconvert {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -6918,7 +6936,7 @@ package mediaconvert {
     val COMBINE_DUPLICATE_STREAMS = "COMBINE_DUPLICATE_STREAMS"
     val NONE                      = "NONE"
 
-    val values = IndexedSeq(COMBINE_DUPLICATE_STREAMS, NONE)
+    val values = js.Object.freeze(js.Array(COMBINE_DUPLICATE_STREAMS, NONE))
   }
 
   /**
@@ -6979,7 +6997,7 @@ package mediaconvert {
     val UTF8  = "UTF8"
     val UTF16 = "UTF16"
 
-    val values = IndexedSeq(UTF8, UTF16)
+    val values = js.Object.freeze(js.Array(UTF8, UTF16))
   }
 
   /**
@@ -7043,7 +7061,7 @@ package mediaconvert {
     val SPATIAL   = "SPATIAL"
     val TEMPORAL  = "TEMPORAL"
 
-    val values = IndexedSeq(BILATERAL, MEAN, GAUSSIAN, LANCZOS, SHARPEN, CONSERVE, SPATIAL, TEMPORAL)
+    val values = js.Object.freeze(js.Array(BILATERAL, MEAN, GAUSSIAN, LANCZOS, SHARPEN, CONSERVE, SPATIAL, TEMPORAL))
   }
 
   /**
@@ -7119,7 +7137,7 @@ package mediaconvert {
     val ASCENDING  = "ASCENDING"
     val DESCENDING = "DESCENDING"
 
-    val values = IndexedSeq(ASCENDING, DESCENDING)
+    val values = js.Object.freeze(js.Array(ASCENDING, DESCENDING))
   }
 
   /**
@@ -7288,12 +7306,14 @@ package mediaconvert {
     val MS_SMOOTH_GROUP_SETTINGS = "MS_SMOOTH_GROUP_SETTINGS"
     val CMAF_GROUP_SETTINGS      = "CMAF_GROUP_SETTINGS"
 
-    val values = IndexedSeq(
-      HLS_GROUP_SETTINGS,
-      DASH_ISO_GROUP_SETTINGS,
-      FILE_GROUP_SETTINGS,
-      MS_SMOOTH_GROUP_SETTINGS,
-      CMAF_GROUP_SETTINGS
+    val values = js.Object.freeze(
+      js.Array(
+        HLS_GROUP_SETTINGS,
+        DASH_ISO_GROUP_SETTINGS,
+        FILE_GROUP_SETTINGS,
+        MS_SMOOTH_GROUP_SETTINGS,
+        CMAF_GROUP_SETTINGS
+      )
     )
   }
 
@@ -7306,7 +7326,7 @@ package mediaconvert {
     val SDT_MANUAL            = "SDT_MANUAL"
     val SDT_NONE              = "SDT_NONE"
 
-    val values = IndexedSeq(SDT_FOLLOW, SDT_FOLLOW_IF_PRESENT, SDT_MANUAL, SDT_NONE)
+    val values = js.Object.freeze(js.Array(SDT_FOLLOW, SDT_FOLLOW_IF_PRESENT, SDT_MANUAL, SDT_NONE))
   }
 
   /**
@@ -7376,7 +7396,7 @@ package mediaconvert {
     val CREATION_DATE = "CREATION_DATE"
     val SYSTEM        = "SYSTEM"
 
-    val values = IndexedSeq(NAME, CREATION_DATE, SYSTEM)
+    val values = js.Object.freeze(js.Array(NAME, CREATION_DATE, SYSTEM))
   }
 
   /**
@@ -7413,7 +7433,7 @@ package mediaconvert {
     val ON_DEMAND = "ON_DEMAND"
     val RESERVED  = "RESERVED"
 
-    val values = IndexedSeq(ON_DEMAND, RESERVED)
+    val values = js.Object.freeze(js.Array(ON_DEMAND, RESERVED))
   }
 
   /**
@@ -7425,7 +7445,8 @@ package mediaconvert {
     val APPLE_PRORES_422_LT    = "APPLE_PRORES_422_LT"
     val APPLE_PRORES_422_PROXY = "APPLE_PRORES_422_PROXY"
 
-    val values = IndexedSeq(APPLE_PRORES_422, APPLE_PRORES_422_HQ, APPLE_PRORES_422_LT, APPLE_PRORES_422_PROXY)
+    val values =
+      js.Object.freeze(js.Array(APPLE_PRORES_422, APPLE_PRORES_422_HQ, APPLE_PRORES_422_LT, APPLE_PRORES_422_PROXY))
   }
 
   /**
@@ -7435,7 +7456,7 @@ package mediaconvert {
     val INITIALIZE_FROM_SOURCE = "INITIALIZE_FROM_SOURCE"
     val SPECIFIED              = "SPECIFIED"
 
-    val values = IndexedSeq(INITIALIZE_FROM_SOURCE, SPECIFIED)
+    val values = js.Object.freeze(js.Array(INITIALIZE_FROM_SOURCE, SPECIFIED))
   }
 
   /**
@@ -7445,7 +7466,7 @@ package mediaconvert {
     val DUPLICATE_DROP = "DUPLICATE_DROP"
     val INTERPOLATE    = "INTERPOLATE"
 
-    val values = IndexedSeq(DUPLICATE_DROP, INTERPOLATE)
+    val values = js.Object.freeze(js.Array(DUPLICATE_DROP, INTERPOLATE))
   }
 
   /**
@@ -7460,7 +7481,7 @@ package mediaconvert {
     val FOLLOW_TOP_FIELD    = "FOLLOW_TOP_FIELD"
     val FOLLOW_BOTTOM_FIELD = "FOLLOW_BOTTOM_FIELD"
 
-    val values = IndexedSeq(PROGRESSIVE, TOP_FIELD, BOTTOM_FIELD, FOLLOW_TOP_FIELD, FOLLOW_BOTTOM_FIELD)
+    val values = js.Object.freeze(js.Array(PROGRESSIVE, TOP_FIELD, BOTTOM_FIELD, FOLLOW_TOP_FIELD, FOLLOW_BOTTOM_FIELD))
   }
 
   /**
@@ -7470,7 +7491,7 @@ package mediaconvert {
     val INITIALIZE_FROM_SOURCE = "INITIALIZE_FROM_SOURCE"
     val SPECIFIED              = "SPECIFIED"
 
-    val values = IndexedSeq(INITIALIZE_FROM_SOURCE, SPECIFIED)
+    val values = js.Object.freeze(js.Array(INITIALIZE_FROM_SOURCE, SPECIFIED))
   }
 
   /**
@@ -7530,7 +7551,7 @@ package mediaconvert {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -7540,7 +7561,7 @@ package mediaconvert {
     val NONE = "NONE"
     val HARD = "HARD"
 
-    val values = IndexedSeq(NONE, HARD)
+    val values = js.Object.freeze(js.Array(NONE, HARD))
   }
 
   /**
@@ -7600,7 +7621,7 @@ package mediaconvert {
     val NAME          = "NAME"
     val CREATION_DATE = "CREATION_DATE"
 
-    val values = IndexedSeq(NAME, CREATION_DATE)
+    val values = js.Object.freeze(js.Array(NAME, CREATION_DATE))
   }
 
   /**
@@ -7610,7 +7631,7 @@ package mediaconvert {
     val ACTIVE = "ACTIVE"
     val PAUSED = "PAUSED"
 
-    val values = IndexedSeq(ACTIVE, PAUSED)
+    val values = js.Object.freeze(js.Array(ACTIVE, PAUSED))
   }
 
   /**
@@ -7671,7 +7692,7 @@ package mediaconvert {
     val AUTO_RENEW = "AUTO_RENEW"
     val EXPIRE     = "EXPIRE"
 
-    val values = IndexedSeq(AUTO_RENEW, EXPIRE)
+    val values = js.Object.freeze(js.Array(AUTO_RENEW, EXPIRE))
   }
 
   /**
@@ -7740,7 +7761,7 @@ package mediaconvert {
     val ACTIVE  = "ACTIVE"
     val EXPIRED = "EXPIRED"
 
-    val values = IndexedSeq(ACTIVE, EXPIRED)
+    val values = js.Object.freeze(js.Array(ACTIVE, EXPIRED))
   }
 
   /**
@@ -7772,7 +7793,7 @@ package mediaconvert {
     val RESPOND     = "RESPOND"
     val PASSTHROUGH = "PASSTHROUGH"
 
-    val values = IndexedSeq(NONE, RESPOND, PASSTHROUGH)
+    val values = js.Object.freeze(js.Array(NONE, RESPOND, PASSTHROUGH))
   }
 
   /**
@@ -7825,7 +7846,7 @@ package mediaconvert {
     val SERVER_SIDE_ENCRYPTION_S3  = "SERVER_SIDE_ENCRYPTION_S3"
     val SERVER_SIDE_ENCRYPTION_KMS = "SERVER_SIDE_ENCRYPTION_KMS"
 
-    val values = IndexedSeq(SERVER_SIDE_ENCRYPTION_S3, SERVER_SIDE_ENCRYPTION_KMS)
+    val values = js.Object.freeze(js.Array(SERVER_SIDE_ENCRYPTION_S3, SERVER_SIDE_ENCRYPTION_KMS))
   }
 
   /**
@@ -7835,7 +7856,7 @@ package mediaconvert {
     val DEFAULT           = "DEFAULT"
     val STRETCH_TO_OUTPUT = "STRETCH_TO_OUTPUT"
 
-    val values = IndexedSeq(DEFAULT, STRETCH_TO_OUTPUT)
+    val values = js.Object.freeze(js.Array(DEFAULT, STRETCH_TO_OUTPUT))
   }
 
   /**
@@ -7847,7 +7868,9 @@ package mediaconvert {
     val FRAMERATE_29_97_DROPFRAME     = "FRAMERATE_29_97_DROPFRAME"
     val FRAMERATE_29_97_NON_DROPFRAME = "FRAMERATE_29_97_NON_DROPFRAME"
 
-    val values = IndexedSeq(FRAMERATE_23_97, FRAMERATE_24, FRAMERATE_29_97_DROPFRAME, FRAMERATE_29_97_NON_DROPFRAME)
+    val values = js.Object.freeze(
+      js.Array(FRAMERATE_23_97, FRAMERATE_24, FRAMERATE_29_97_DROPFRAME, FRAMERATE_29_97_NON_DROPFRAME)
+    )
   }
 
   /**
@@ -7974,22 +7997,24 @@ package mediaconvert {
     val SECONDS_540 = "SECONDS_540"
     val SECONDS_600 = "SECONDS_600"
 
-    val values = IndexedSeq(
-      SECONDS_10,
-      SECONDS_12,
-      SECONDS_15,
-      SECONDS_20,
-      SECONDS_30,
-      SECONDS_60,
-      SECONDS_120,
-      SECONDS_180,
-      SECONDS_240,
-      SECONDS_300,
-      SECONDS_360,
-      SECONDS_420,
-      SECONDS_480,
-      SECONDS_540,
-      SECONDS_600
+    val values = js.Object.freeze(
+      js.Array(
+        SECONDS_10,
+        SECONDS_12,
+        SECONDS_15,
+        SECONDS_20,
+        SECONDS_30,
+        SECONDS_60,
+        SECONDS_120,
+        SECONDS_180,
+        SECONDS_240,
+        SECONDS_300,
+        SECONDS_360,
+        SECONDS_420,
+        SECONDS_480,
+        SECONDS_540,
+        SECONDS_600
+      )
     )
   }
 
@@ -8056,12 +8081,14 @@ package mediaconvert {
     val PAGE_TYPE_PROGRAM_SCHEDULE          = "PAGE_TYPE_PROGRAM_SCHEDULE"
     val PAGE_TYPE_HEARING_IMPAIRED_SUBTITLE = "PAGE_TYPE_HEARING_IMPAIRED_SUBTITLE"
 
-    val values = IndexedSeq(
-      PAGE_TYPE_INITIAL,
-      PAGE_TYPE_SUBTITLE,
-      PAGE_TYPE_ADDL_INFO,
-      PAGE_TYPE_PROGRAM_SCHEDULE,
-      PAGE_TYPE_HEARING_IMPAIRED_SUBTITLE
+    val values = js.Object.freeze(
+      js.Array(
+        PAGE_TYPE_INITIAL,
+        PAGE_TYPE_SUBTITLE,
+        PAGE_TYPE_ADDL_INFO,
+        PAGE_TYPE_PROGRAM_SCHEDULE,
+        PAGE_TYPE_HEARING_IMPAIRED_SUBTITLE
+      )
     )
   }
 
@@ -8121,16 +8148,18 @@ package mediaconvert {
     val BOTTOM_CENTER = "BOTTOM_CENTER"
     val BOTTOM_RIGHT  = "BOTTOM_RIGHT"
 
-    val values = IndexedSeq(
-      TOP_CENTER,
-      TOP_LEFT,
-      TOP_RIGHT,
-      MIDDLE_LEFT,
-      MIDDLE_CENTER,
-      MIDDLE_RIGHT,
-      BOTTOM_LEFT,
-      BOTTOM_CENTER,
-      BOTTOM_RIGHT
+    val values = js.Object.freeze(
+      js.Array(
+        TOP_CENTER,
+        TOP_LEFT,
+        TOP_RIGHT,
+        MIDDLE_LEFT,
+        MIDDLE_CENTER,
+        MIDDLE_RIGHT,
+        BOTTOM_LEFT,
+        BOTTOM_CENTER,
+        BOTTOM_RIGHT
+      )
     )
   }
 
@@ -8169,7 +8198,7 @@ package mediaconvert {
     val ZEROBASED      = "ZEROBASED"
     val SPECIFIEDSTART = "SPECIFIEDSTART"
 
-    val values = IndexedSeq(EMBEDDED, ZEROBASED, SPECIFIEDSTART)
+    val values = js.Object.freeze(js.Array(EMBEDDED, ZEROBASED, SPECIFIEDSTART))
   }
 
   /**
@@ -8179,7 +8208,7 @@ package mediaconvert {
     val PASSTHROUGH = "PASSTHROUGH"
     val NONE        = "NONE"
 
-    val values = IndexedSeq(PASSTHROUGH, NONE)
+    val values = js.Object.freeze(js.Array(PASSTHROUGH, NONE))
   }
 
   /**
@@ -8267,14 +8296,14 @@ package mediaconvert {
     val ENABLED  = "ENABLED"
     val DISABLED = "DISABLED"
 
-    val values = IndexedSeq(ENABLED, DISABLED)
+    val values = js.Object.freeze(js.Array(ENABLED, DISABLED))
   }
 
   object TypeEnum {
     val SYSTEM = "SYSTEM"
     val CUSTOM = "CUSTOM"
 
-    val values = IndexedSeq(SYSTEM, CUSTOM)
+    val values = js.Object.freeze(js.Array(SYSTEM, CUSTOM))
   }
 
   @js.native
@@ -8454,7 +8483,7 @@ package mediaconvert {
     val MPEG2         = "MPEG2"
     val PRORES        = "PRORES"
 
-    val values = IndexedSeq(FRAME_CAPTURE, H_264, H_265, MPEG2, PRORES)
+    val values = js.Object.freeze(js.Array(FRAME_CAPTURE, H_264, H_265, MPEG2, PRORES))
   }
 
   /**
@@ -8641,7 +8670,7 @@ package mediaconvert {
     val DISABLED       = "DISABLED"
     val PIC_TIMING_SEI = "PIC_TIMING_SEI"
 
-    val values = IndexedSeq(DISABLED, PIC_TIMING_SEI)
+    val values = js.Object.freeze(js.Array(DISABLED, PIC_TIMING_SEI))
   }
 
   /**
@@ -8651,7 +8680,7 @@ package mediaconvert {
     val RIFF = "RIFF"
     val RF64 = "RF64"
 
-    val values = IndexedSeq(RIFF, RF64)
+    val values = js.Object.freeze(js.Array(RIFF, RF64))
   }
 
   /**
diff --git a/services/medialive/src/main/scala/facade/amazonaws/services/MediaLive.scala b/services/medialive/src/main/scala/facade/amazonaws/services/MediaLive.scala
index 00c069b0e..bc245b2e5 100644
--- a/services/medialive/src/main/scala/facade/amazonaws/services/MediaLive.scala
+++ b/services/medialive/src/main/scala/facade/amazonaws/services/MediaLive.scala
@@ -411,7 +411,8 @@ package medialive {
     val CODING_MODE_2_0 = "CODING_MODE_2_0"
     val CODING_MODE_5_1 = "CODING_MODE_5_1"
 
-    val values = IndexedSeq(AD_RECEIVER_MIX, CODING_MODE_1_0, CODING_MODE_1_1, CODING_MODE_2_0, CODING_MODE_5_1)
+    val values =
+      js.Object.freeze(js.Array(AD_RECEIVER_MIX, CODING_MODE_1_0, CODING_MODE_1_1, CODING_MODE_2_0, CODING_MODE_5_1))
   }
 
   /**
@@ -421,7 +422,7 @@ package medialive {
     val BROADCASTER_MIXED_AD = "BROADCASTER_MIXED_AD"
     val NORMAL               = "NORMAL"
 
-    val values = IndexedSeq(BROADCASTER_MIXED_AD, NORMAL)
+    val values = js.Object.freeze(js.Array(BROADCASTER_MIXED_AD, NORMAL))
   }
 
   /**
@@ -432,7 +433,7 @@ package medialive {
     val HEV2 = "HEV2"
     val LC   = "LC"
 
-    val values = IndexedSeq(HEV1, HEV2, LC)
+    val values = js.Object.freeze(js.Array(HEV1, HEV2, LC))
   }
 
   /**
@@ -442,7 +443,7 @@ package medialive {
     val CBR = "CBR"
     val VBR = "VBR"
 
-    val values = IndexedSeq(CBR, VBR)
+    val values = js.Object.freeze(js.Array(CBR, VBR))
   }
 
   /**
@@ -452,7 +453,7 @@ package medialive {
     val LATM_LOAS = "LATM_LOAS"
     val NONE      = "NONE"
 
-    val values = IndexedSeq(LATM_LOAS, NONE)
+    val values = js.Object.freeze(js.Array(LATM_LOAS, NONE))
   }
 
   /**
@@ -504,7 +505,7 @@ package medialive {
     val MPEG2 = "MPEG2"
     val MPEG4 = "MPEG4"
 
-    val values = IndexedSeq(MPEG2, MPEG4)
+    val values = js.Object.freeze(js.Array(MPEG2, MPEG4))
   }
 
   /**
@@ -516,7 +517,7 @@ package medialive {
     val MEDIUM_HIGH = "MEDIUM_HIGH"
     val MEDIUM_LOW  = "MEDIUM_LOW"
 
-    val values = IndexedSeq(HIGH, LOW, MEDIUM_HIGH, MEDIUM_LOW)
+    val values = js.Object.freeze(js.Array(HIGH, LOW, MEDIUM_HIGH, MEDIUM_LOW))
   }
 
   /**
@@ -532,15 +533,17 @@ package medialive {
     val VISUALLY_IMPAIRED = "VISUALLY_IMPAIRED"
     val VOICE_OVER        = "VOICE_OVER"
 
-    val values = IndexedSeq(
-      COMMENTARY,
-      COMPLETE_MAIN,
-      DIALOGUE,
-      EMERGENCY,
-      HEARING_IMPAIRED,
-      MUSIC_AND_EFFECTS,
-      VISUALLY_IMPAIRED,
-      VOICE_OVER
+    val values = js.Object.freeze(
+      js.Array(
+        COMMENTARY,
+        COMPLETE_MAIN,
+        DIALOGUE,
+        EMERGENCY,
+        HEARING_IMPAIRED,
+        MUSIC_AND_EFFECTS,
+        VISUALLY_IMPAIRED,
+        VOICE_OVER
+      )
     )
   }
 
@@ -553,7 +556,7 @@ package medialive {
     val CODING_MODE_2_0     = "CODING_MODE_2_0"
     val CODING_MODE_3_2_LFE = "CODING_MODE_3_2_LFE"
 
-    val values = IndexedSeq(CODING_MODE_1_0, CODING_MODE_1_1, CODING_MODE_2_0, CODING_MODE_3_2_LFE)
+    val values = js.Object.freeze(js.Array(CODING_MODE_1_0, CODING_MODE_1_1, CODING_MODE_2_0, CODING_MODE_3_2_LFE))
   }
 
   /**
@@ -563,7 +566,7 @@ package medialive {
     val FILM_STANDARD = "FILM_STANDARD"
     val NONE          = "NONE"
 
-    val values = IndexedSeq(FILM_STANDARD, NONE)
+    val values = js.Object.freeze(js.Array(FILM_STANDARD, NONE))
   }
 
   /**
@@ -573,7 +576,7 @@ package medialive {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -583,7 +586,7 @@ package medialive {
     val FOLLOW_INPUT   = "FOLLOW_INPUT"
     val USE_CONFIGURED = "USE_CONFIGURED"
 
-    val values = IndexedSeq(FOLLOW_INPUT, USE_CONFIGURED)
+    val values = js.Object.freeze(js.Array(FOLLOW_INPUT, USE_CONFIGURED))
   }
 
   /**
@@ -630,7 +633,7 @@ package medialive {
     val FIXED = "FIXED"
     val NONE  = "NONE"
 
-    val values = IndexedSeq(AUTO, FIXED, NONE)
+    val values = js.Object.freeze(js.Array(AUTO, FIXED, NONE))
   }
 
   /**
@@ -837,7 +840,7 @@ package medialive {
     val FOLLOW_INPUT   = "FOLLOW_INPUT"
     val USE_CONFIGURED = "USE_CONFIGURED"
 
-    val values = IndexedSeq(FOLLOW_INPUT, USE_CONFIGURED)
+    val values = js.Object.freeze(js.Array(FOLLOW_INPUT, USE_CONFIGURED))
   }
 
   /**
@@ -847,7 +850,7 @@ package medialive {
     val FOLLOW_INPUT   = "FOLLOW_INPUT"
     val USE_CONFIGURED = "USE_CONFIGURED"
 
-    val values = IndexedSeq(FOLLOW_INPUT, USE_CONFIGURED)
+    val values = js.Object.freeze(js.Array(FOLLOW_INPUT, USE_CONFIGURED))
   }
 
   /**
@@ -880,7 +883,7 @@ package medialive {
     val LOOSE  = "LOOSE"
     val STRICT = "STRICT"
 
-    val values = IndexedSeq(LOOSE, STRICT)
+    val values = js.Object.freeze(js.Array(LOOSE, STRICT))
   }
 
   /**
@@ -890,7 +893,7 @@ package medialive {
     val ITU_1770_1 = "ITU_1770_1"
     val ITU_1770_2 = "ITU_1770_2"
 
-    val values = IndexedSeq(ITU_1770_1, ITU_1770_2)
+    val values = js.Object.freeze(js.Array(ITU_1770_1, ITU_1770_2))
   }
 
   /**
@@ -899,7 +902,7 @@ package medialive {
   object AudioNormalizationAlgorithmControlEnum {
     val CORRECT_AUDIO = "CORRECT_AUDIO"
 
-    val values = IndexedSeq(CORRECT_AUDIO)
+    val values = js.Object.freeze(js.Array(CORRECT_AUDIO))
   }
 
   /**
@@ -959,11 +962,13 @@ package medialive {
     val ALTERNATE_AUDIO_NOT_AUTO_SELECT     = "ALTERNATE_AUDIO_NOT_AUTO_SELECT"
     val AUDIO_ONLY_VARIANT_STREAM           = "AUDIO_ONLY_VARIANT_STREAM"
 
-    val values = IndexedSeq(
-      ALTERNATE_AUDIO_AUTO_SELECT,
-      ALTERNATE_AUDIO_AUTO_SELECT_DEFAULT,
-      ALTERNATE_AUDIO_NOT_AUTO_SELECT,
-      AUDIO_ONLY_VARIANT_STREAM
+    val values = js.Object.freeze(
+      js.Array(
+        ALTERNATE_AUDIO_AUTO_SELECT,
+        ALTERNATE_AUDIO_AUTO_SELECT_DEFAULT,
+        ALTERNATE_AUDIO_NOT_AUTO_SELECT,
+        AUDIO_ONLY_VARIANT_STREAM
+      )
     )
   }
 
@@ -1040,7 +1045,7 @@ package medialive {
     val UNDEFINED                  = "UNDEFINED"
     val VISUAL_IMPAIRED_COMMENTARY = "VISUAL_IMPAIRED_COMMENTARY"
 
-    val values = IndexedSeq(CLEAN_EFFECTS, HEARING_IMPAIRED, UNDEFINED, VISUAL_IMPAIRED_COMMENTARY)
+    val values = js.Object.freeze(js.Array(CLEAN_EFFECTS, HEARING_IMPAIRED, UNDEFINED, VISUAL_IMPAIRED_COMMENTARY))
   }
 
   /**
@@ -1050,7 +1055,7 @@ package medialive {
     val AKAMAI = "AKAMAI"
     val COMMON = "COMMON"
 
-    val values = IndexedSeq(AKAMAI, COMMON)
+    val values = js.Object.freeze(js.Array(AKAMAI, COMMON))
   }
 
   /**
@@ -1081,7 +1086,7 @@ package medialive {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -1287,7 +1292,7 @@ package medialive {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -1297,7 +1302,7 @@ package medialive {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -1308,7 +1313,7 @@ package medialive {
     val LEFT     = "LEFT"
     val SMART    = "SMART"
 
-    val values = IndexedSeq(CENTERED, LEFT, SMART)
+    val values = js.Object.freeze(js.Array(CENTERED, LEFT, SMART))
   }
 
   /**
@@ -1319,7 +1324,7 @@ package medialive {
     val NONE  = "NONE"
     val WHITE = "WHITE"
 
-    val values = IndexedSeq(BLACK, NONE, WHITE)
+    val values = js.Object.freeze(js.Array(BLACK, NONE, WHITE))
   }
 
   /**
@@ -1399,7 +1404,7 @@ package medialive {
     val WHITE  = "WHITE"
     val YELLOW = "YELLOW"
 
-    val values = IndexedSeq(BLACK, BLUE, GREEN, RED, WHITE, YELLOW)
+    val values = js.Object.freeze(js.Array(BLACK, BLUE, GREEN, RED, WHITE, YELLOW))
   }
 
   /**
@@ -1413,7 +1418,7 @@ package medialive {
     val WHITE  = "WHITE"
     val YELLOW = "YELLOW"
 
-    val values = IndexedSeq(BLACK, BLUE, GREEN, RED, WHITE, YELLOW)
+    val values = js.Object.freeze(js.Array(BLACK, BLUE, GREEN, RED, WHITE, YELLOW))
   }
 
   /**
@@ -1424,7 +1429,7 @@ package medialive {
     val NONE  = "NONE"
     val WHITE = "WHITE"
 
-    val values = IndexedSeq(BLACK, NONE, WHITE)
+    val values = js.Object.freeze(js.Array(BLACK, NONE, WHITE))
   }
 
   /**
@@ -1434,7 +1439,7 @@ package medialive {
     val FIXED  = "FIXED"
     val SCALED = "SCALED"
 
-    val values = IndexedSeq(FIXED, SCALED)
+    val values = js.Object.freeze(js.Array(FIXED, SCALED))
   }
 
   /**
@@ -1678,7 +1683,7 @@ package medialive {
     val STANDARD        = "STANDARD"
     val SINGLE_PIPELINE = "SINGLE_PIPELINE"
 
-    val values = IndexedSeq(STANDARD, SINGLE_PIPELINE)
+    val values = js.Object.freeze(js.Array(STANDARD, SINGLE_PIPELINE))
   }
 
   /**
@@ -1715,18 +1720,20 @@ package medialive {
     val UPDATING      = "UPDATING"
     val UPDATE_FAILED = "UPDATE_FAILED"
 
-    val values = IndexedSeq(
-      CREATING,
-      CREATE_FAILED,
-      IDLE,
-      STARTING,
-      RUNNING,
-      RECOVERING,
-      STOPPING,
-      DELETING,
-      DELETED,
-      UPDATING,
-      UPDATE_FAILED
+    val values = js.Object.freeze(
+      js.Array(
+        CREATING,
+        CREATE_FAILED,
+        IDLE,
+        STARTING,
+        RUNNING,
+        RECOVERING,
+        STOPPING,
+        DELETING,
+        DELETED,
+        UPDATING,
+        UPDATE_FAILED
+      )
     )
   }
 
@@ -2721,7 +2728,7 @@ package medialive {
     val SDT_MANUAL            = "SDT_MANUAL"
     val SDT_NONE              = "SDT_NONE"
 
-    val values = IndexedSeq(SDT_FOLLOW, SDT_FOLLOW_IF_PRESENT, SDT_MANUAL, SDT_NONE)
+    val values = js.Object.freeze(js.Array(SDT_FOLLOW, SDT_FOLLOW_IF_PRESENT, SDT_MANUAL, SDT_NONE))
   }
 
   /**
@@ -2759,7 +2766,7 @@ package medialive {
     val LEFT     = "LEFT"
     val SMART    = "SMART"
 
-    val values = IndexedSeq(CENTERED, LEFT, SMART)
+    val values = js.Object.freeze(js.Array(CENTERED, LEFT, SMART))
   }
 
   /**
@@ -2770,7 +2777,7 @@ package medialive {
     val NONE  = "NONE"
     val WHITE = "WHITE"
 
-    val values = IndexedSeq(BLACK, NONE, WHITE)
+    val values = js.Object.freeze(js.Array(BLACK, NONE, WHITE))
   }
 
   /**
@@ -2784,7 +2791,7 @@ package medialive {
     val WHITE  = "WHITE"
     val YELLOW = "YELLOW"
 
-    val values = IndexedSeq(BLACK, BLUE, GREEN, RED, WHITE, YELLOW)
+    val values = js.Object.freeze(js.Array(BLACK, BLUE, GREEN, RED, WHITE, YELLOW))
   }
 
   /**
@@ -2798,7 +2805,7 @@ package medialive {
     val WHITE  = "WHITE"
     val YELLOW = "YELLOW"
 
-    val values = IndexedSeq(BLACK, BLUE, GREEN, RED, WHITE, YELLOW)
+    val values = js.Object.freeze(js.Array(BLACK, BLUE, GREEN, RED, WHITE, YELLOW))
   }
 
   /**
@@ -2875,7 +2882,7 @@ package medialive {
     val NONE  = "NONE"
     val WHITE = "WHITE"
 
-    val values = IndexedSeq(BLACK, NONE, WHITE)
+    val values = js.Object.freeze(js.Array(BLACK, NONE, WHITE))
   }
 
   /**
@@ -2885,7 +2892,7 @@ package medialive {
     val FIXED  = "FIXED"
     val SCALED = "SCALED"
 
-    val values = IndexedSeq(FIXED, SCALED)
+    val values = js.Object.freeze(js.Array(FIXED, SCALED))
   }
 
   /**
@@ -2931,7 +2938,7 @@ package medialive {
     val ATTENUATE_3_DB = "ATTENUATE_3_DB"
     val NONE           = "NONE"
 
-    val values = IndexedSeq(ATTENUATE_3_DB, NONE)
+    val values = js.Object.freeze(js.Array(ATTENUATE_3_DB, NONE))
   }
 
   /**
@@ -2944,7 +2951,7 @@ package medialive {
     val HEARING_IMPAIRED  = "HEARING_IMPAIRED"
     val VISUALLY_IMPAIRED = "VISUALLY_IMPAIRED"
 
-    val values = IndexedSeq(COMMENTARY, COMPLETE_MAIN, EMERGENCY, HEARING_IMPAIRED, VISUALLY_IMPAIRED)
+    val values = js.Object.freeze(js.Array(COMMENTARY, COMPLETE_MAIN, EMERGENCY, HEARING_IMPAIRED, VISUALLY_IMPAIRED))
   }
 
   /**
@@ -2955,7 +2962,7 @@ package medialive {
     val CODING_MODE_2_0 = "CODING_MODE_2_0"
     val CODING_MODE_3_2 = "CODING_MODE_3_2"
 
-    val values = IndexedSeq(CODING_MODE_1_0, CODING_MODE_2_0, CODING_MODE_3_2)
+    val values = js.Object.freeze(js.Array(CODING_MODE_1_0, CODING_MODE_2_0, CODING_MODE_3_2))
   }
 
   /**
@@ -2965,7 +2972,7 @@ package medialive {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -2979,7 +2986,7 @@ package medialive {
     val NONE           = "NONE"
     val SPEECH         = "SPEECH"
 
-    val values = IndexedSeq(FILM_LIGHT, FILM_STANDARD, MUSIC_LIGHT, MUSIC_STANDARD, NONE, SPEECH)
+    val values = js.Object.freeze(js.Array(FILM_LIGHT, FILM_STANDARD, MUSIC_LIGHT, MUSIC_STANDARD, NONE, SPEECH))
   }
 
   /**
@@ -2993,7 +3000,7 @@ package medialive {
     val NONE           = "NONE"
     val SPEECH         = "SPEECH"
 
-    val values = IndexedSeq(FILM_LIGHT, FILM_STANDARD, MUSIC_LIGHT, MUSIC_STANDARD, NONE, SPEECH)
+    val values = js.Object.freeze(js.Array(FILM_LIGHT, FILM_STANDARD, MUSIC_LIGHT, MUSIC_STANDARD, NONE, SPEECH))
   }
 
   /**
@@ -3003,7 +3010,7 @@ package medialive {
     val LFE    = "LFE"
     val NO_LFE = "NO_LFE"
 
-    val values = IndexedSeq(LFE, NO_LFE)
+    val values = js.Object.freeze(js.Array(LFE, NO_LFE))
   }
 
   /**
@@ -3013,7 +3020,7 @@ package medialive {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -3023,7 +3030,7 @@ package medialive {
     val FOLLOW_INPUT   = "FOLLOW_INPUT"
     val USE_CONFIGURED = "USE_CONFIGURED"
 
-    val values = IndexedSeq(FOLLOW_INPUT, USE_CONFIGURED)
+    val values = js.Object.freeze(js.Array(FOLLOW_INPUT, USE_CONFIGURED))
   }
 
   /**
@@ -3033,7 +3040,7 @@ package medialive {
     val NO_PASSTHROUGH = "NO_PASSTHROUGH"
     val WHEN_POSSIBLE  = "WHEN_POSSIBLE"
 
-    val values = IndexedSeq(NO_PASSTHROUGH, WHEN_POSSIBLE)
+    val values = js.Object.freeze(js.Array(NO_PASSTHROUGH, WHEN_POSSIBLE))
   }
 
   /**
@@ -3043,7 +3050,7 @@ package medialive {
     val NO_SHIFT         = "NO_SHIFT"
     val SHIFT_90_DEGREES = "SHIFT_90_DEGREES"
 
-    val values = IndexedSeq(NO_SHIFT, SHIFT_90_DEGREES)
+    val values = js.Object.freeze(js.Array(NO_SHIFT, SHIFT_90_DEGREES))
   }
 
   /**
@@ -3130,7 +3137,7 @@ package medialive {
     val LT_RT         = "LT_RT"
     val NOT_INDICATED = "NOT_INDICATED"
 
-    val values = IndexedSeq(DPL2, LO_RO, LT_RT, NOT_INDICATED)
+    val values = js.Object.freeze(js.Array(DPL2, LO_RO, LT_RT, NOT_INDICATED))
   }
 
   /**
@@ -3141,7 +3148,7 @@ package medialive {
     val ENABLED       = "ENABLED"
     val NOT_INDICATED = "NOT_INDICATED"
 
-    val values = IndexedSeq(DISABLED, ENABLED, NOT_INDICATED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED, NOT_INDICATED))
   }
 
   /**
@@ -3152,7 +3159,7 @@ package medialive {
     val ENABLED       = "ENABLED"
     val NOT_INDICATED = "NOT_INDICATED"
 
-    val values = IndexedSeq(DISABLED, ENABLED, NOT_INDICATED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED, NOT_INDICATED))
   }
 
   /**
@@ -3162,7 +3169,7 @@ package medialive {
     val DISABLED  = "DISABLED"
     val UPCONVERT = "UPCONVERT"
 
-    val values = IndexedSeq(DISABLED, UPCONVERT)
+    val values = js.Object.freeze(js.Array(DISABLED, UPCONVERT))
   }
 
   /**
@@ -3202,7 +3209,7 @@ package medialive {
     val AUTO = "AUTO"
     val OFF  = "OFF"
 
-    val values = IndexedSeq(AUTO, OFF)
+    val values = js.Object.freeze(js.Array(AUTO, OFF))
   }
 
   /**
@@ -3283,7 +3290,7 @@ package medialive {
     val COLUMN         = "COLUMN"
     val COLUMN_AND_ROW = "COLUMN_AND_ROW"
 
-    val values = IndexedSeq(COLUMN, COLUMN_AND_ROW)
+    val values = js.Object.freeze(js.Array(COLUMN, COLUMN_AND_ROW))
   }
 
   /**
@@ -3326,18 +3333,20 @@ package medialive {
     val AFD_1110 = "AFD_1110"
     val AFD_1111 = "AFD_1111"
 
-    val values = IndexedSeq(
-      AFD_0000,
-      AFD_0010,
-      AFD_0011,
-      AFD_0100,
-      AFD_1000,
-      AFD_1001,
-      AFD_1010,
-      AFD_1011,
-      AFD_1101,
-      AFD_1110,
-      AFD_1111
+    val values = js.Object.freeze(
+      js.Array(
+        AFD_0000,
+        AFD_0010,
+        AFD_0011,
+        AFD_0100,
+        AFD_1000,
+        AFD_1001,
+        AFD_1010,
+        AFD_1011,
+        AFD_1101,
+        AFD_1110,
+        AFD_1111
+      )
     )
   }
 
@@ -3391,7 +3400,7 @@ package medialive {
     val END   = "END"
     val START = "START"
 
-    val values = IndexedSeq(END, START)
+    val values = js.Object.freeze(js.Array(END, START))
   }
 
   /**
@@ -3492,7 +3501,7 @@ package medialive {
     val NONE                   = "NONE"
     val SWITCH_AND_LOOP_INPUTS = "SWITCH_AND_LOOP_INPUTS"
 
-    val values = IndexedSeq(NONE, SWITCH_AND_LOOP_INPUTS)
+    val values = js.Object.freeze(js.Array(NONE, SWITCH_AND_LOOP_INPUTS))
   }
 
   /**
@@ -3502,7 +3511,7 @@ package medialive {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -3512,7 +3521,7 @@ package medialive {
     val EPOCH_LOCKING    = "EPOCH_LOCKING"
     val PIPELINE_LOCKING = "PIPELINE_LOCKING"
 
-    val values = IndexedSeq(EPOCH_LOCKING, PIPELINE_LOCKING)
+    val values = js.Object.freeze(js.Array(EPOCH_LOCKING, PIPELINE_LOCKING))
   }
 
   /**
@@ -3522,7 +3531,7 @@ package medialive {
     val INPUT_CLOCK  = "INPUT_CLOCK"
     val SYSTEM_CLOCK = "SYSTEM_CLOCK"
 
-    val values = IndexedSeq(INPUT_CLOCK, SYSTEM_CLOCK)
+    val values = js.Object.freeze(js.Array(INPUT_CLOCK, SYSTEM_CLOCK))
   }
 
   /**
@@ -3536,7 +3545,7 @@ package medialive {
     val MEDIUM = "MEDIUM"
     val OFF    = "OFF"
 
-    val values = IndexedSeq(HIGH, HIGHER, LOW, MAX, MEDIUM, OFF)
+    val values = js.Object.freeze(js.Array(HIGH, HIGHER, LOW, MAX, MEDIUM, OFF))
   }
 
   /**
@@ -3546,7 +3555,7 @@ package medialive {
     val IGNORE = "IGNORE"
     val INSERT = "INSERT"
 
-    val values = IndexedSeq(IGNORE, INSERT)
+    val values = js.Object.freeze(js.Array(IGNORE, INSERT))
   }
 
   /**
@@ -3556,7 +3565,7 @@ package medialive {
     val CABAC = "CABAC"
     val CAVLC = "CAVLC"
 
-    val values = IndexedSeq(CABAC, CAVLC)
+    val values = js.Object.freeze(js.Array(CABAC, CAVLC))
   }
 
   /**
@@ -3566,7 +3575,7 @@ package medialive {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -3576,7 +3585,7 @@ package medialive {
     val INITIALIZE_FROM_SOURCE = "INITIALIZE_FROM_SOURCE"
     val SPECIFIED              = "SPECIFIED"
 
-    val values = IndexedSeq(INITIALIZE_FROM_SOURCE, SPECIFIED)
+    val values = js.Object.freeze(js.Array(INITIALIZE_FROM_SOURCE, SPECIFIED))
   }
 
   /**
@@ -3586,7 +3595,7 @@ package medialive {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -3596,7 +3605,7 @@ package medialive {
     val FRAMES  = "FRAMES"
     val SECONDS = "SECONDS"
 
-    val values = IndexedSeq(FRAMES, SECONDS)
+    val values = js.Object.freeze(js.Array(FRAMES, SECONDS))
   }
 
   /**
@@ -3621,24 +3630,26 @@ package medialive {
     val H264_LEVEL_5_2  = "H264_LEVEL_5_2"
     val H264_LEVEL_AUTO = "H264_LEVEL_AUTO"
 
-    val values = IndexedSeq(
-      H264_LEVEL_1,
-      H264_LEVEL_1_1,
-      H264_LEVEL_1_2,
-      H264_LEVEL_1_3,
-      H264_LEVEL_2,
-      H264_LEVEL_2_1,
-      H264_LEVEL_2_2,
-      H264_LEVEL_3,
-      H264_LEVEL_3_1,
-      H264_LEVEL_3_2,
-      H264_LEVEL_4,
-      H264_LEVEL_4_1,
-      H264_LEVEL_4_2,
-      H264_LEVEL_5,
-      H264_LEVEL_5_1,
-      H264_LEVEL_5_2,
-      H264_LEVEL_AUTO
+    val values = js.Object.freeze(
+      js.Array(
+        H264_LEVEL_1,
+        H264_LEVEL_1_1,
+        H264_LEVEL_1_2,
+        H264_LEVEL_1_3,
+        H264_LEVEL_2,
+        H264_LEVEL_2_1,
+        H264_LEVEL_2_2,
+        H264_LEVEL_3,
+        H264_LEVEL_3_1,
+        H264_LEVEL_3_2,
+        H264_LEVEL_4,
+        H264_LEVEL_4_1,
+        H264_LEVEL_4_2,
+        H264_LEVEL_5,
+        H264_LEVEL_5_1,
+        H264_LEVEL_5_2,
+        H264_LEVEL_AUTO
+      )
     )
   }
 
@@ -3650,7 +3661,7 @@ package medialive {
     val LOW    = "LOW"
     val MEDIUM = "MEDIUM"
 
-    val values = IndexedSeq(HIGH, LOW, MEDIUM)
+    val values = js.Object.freeze(js.Array(HIGH, LOW, MEDIUM))
   }
 
   /**
@@ -3660,7 +3671,7 @@ package medialive {
     val INITIALIZE_FROM_SOURCE = "INITIALIZE_FROM_SOURCE"
     val SPECIFIED              = "SPECIFIED"
 
-    val values = IndexedSeq(INITIALIZE_FROM_SOURCE, SPECIFIED)
+    val values = js.Object.freeze(js.Array(INITIALIZE_FROM_SOURCE, SPECIFIED))
   }
 
   /**
@@ -3674,7 +3685,7 @@ package medialive {
     val HIGH_422_10BIT = "HIGH_422_10BIT"
     val MAIN           = "MAIN"
 
-    val values = IndexedSeq(BASELINE, HIGH, HIGH_10BIT, HIGH_422, HIGH_422_10BIT, MAIN)
+    val values = js.Object.freeze(js.Array(BASELINE, HIGH, HIGH_10BIT, HIGH_422, HIGH_422_10BIT, MAIN))
   }
 
   /**
@@ -3685,7 +3696,7 @@ package medialive {
     val QVBR = "QVBR"
     val VBR  = "VBR"
 
-    val values = IndexedSeq(CBR, QVBR, VBR)
+    val values = js.Object.freeze(js.Array(CBR, QVBR, VBR))
   }
 
   /**
@@ -3695,7 +3706,7 @@ package medialive {
     val INTERLACED  = "INTERLACED"
     val PROGRESSIVE = "PROGRESSIVE"
 
-    val values = IndexedSeq(INTERLACED, PROGRESSIVE)
+    val values = js.Object.freeze(js.Array(INTERLACED, PROGRESSIVE))
   }
 
   /**
@@ -3705,7 +3716,7 @@ package medialive {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -3841,7 +3852,7 @@ package medialive {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -3851,7 +3862,7 @@ package medialive {
     val DYNAMIC = "DYNAMIC"
     val FIXED   = "FIXED"
 
-    val values = IndexedSeq(DYNAMIC, FIXED)
+    val values = js.Object.freeze(js.Array(DYNAMIC, FIXED))
   }
 
   /**
@@ -3861,7 +3872,7 @@ package medialive {
     val DEFAULT = "DEFAULT"
     val RP2027  = "RP2027"
 
-    val values = IndexedSeq(DEFAULT, RP2027)
+    val values = js.Object.freeze(js.Array(DEFAULT, RP2027))
   }
 
   /**
@@ -3871,7 +3882,7 @@ package medialive {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -3881,7 +3892,7 @@ package medialive {
     val DISABLED       = "DISABLED"
     val PIC_TIMING_SEI = "PIC_TIMING_SEI"
 
-    val values = IndexedSeq(DISABLED, PIC_TIMING_SEI)
+    val values = js.Object.freeze(js.Array(DISABLED, PIC_TIMING_SEI))
   }
 
   /**
@@ -3892,7 +3903,7 @@ package medialive {
     val ELEMENTAL        = "ELEMENTAL"
     val ELEMENTAL_SCTE35 = "ELEMENTAL_SCTE35"
 
-    val values = IndexedSeq(ADOBE, ELEMENTAL, ELEMENTAL_SCTE35)
+    val values = js.Object.freeze(js.Array(ADOBE, ELEMENTAL, ELEMENTAL_SCTE35))
   }
 
   /**
@@ -3902,7 +3913,7 @@ package medialive {
     val CHUNKED     = "CHUNKED"
     val NON_CHUNKED = "NON_CHUNKED"
 
-    val values = IndexedSeq(CHUNKED, NON_CHUNKED)
+    val values = js.Object.freeze(js.Array(CHUNKED, NON_CHUNKED))
   }
 
   /**
@@ -3976,7 +3987,7 @@ package medialive {
     val NONE   = "NONE"
     val OMIT   = "OMIT"
 
-    val values = IndexedSeq(INSERT, NONE, OMIT)
+    val values = js.Object.freeze(js.Array(INSERT, NONE, OMIT))
   }
 
   /**
@@ -4013,7 +4024,7 @@ package medialive {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -4023,7 +4034,7 @@ package medialive {
     val RFC_4281 = "RFC_4281"
     val RFC_6381 = "RFC_6381"
 
-    val values = IndexedSeq(RFC_4281, RFC_6381)
+    val values = js.Object.freeze(js.Array(RFC_4281, RFC_6381))
   }
 
   /**
@@ -4033,7 +4044,7 @@ package medialive {
     val SINGLE_DIRECTORY        = "SINGLE_DIRECTORY"
     val SUBDIRECTORY_PER_STREAM = "SUBDIRECTORY_PER_STREAM"
 
-    val values = IndexedSeq(SINGLE_DIRECTORY, SUBDIRECTORY_PER_STREAM)
+    val values = js.Object.freeze(js.Array(SINGLE_DIRECTORY, SUBDIRECTORY_PER_STREAM))
   }
 
   /**
@@ -4043,7 +4054,7 @@ package medialive {
     val AES128     = "AES128"
     val SAMPLE_AES = "SAMPLE_AES"
 
-    val values = IndexedSeq(AES128, SAMPLE_AES)
+    val values = js.Object.freeze(js.Array(AES128, SAMPLE_AES))
   }
 
   /**
@@ -4208,7 +4219,7 @@ package medialive {
     val EXCLUDE = "EXCLUDE"
     val INCLUDE = "INCLUDE"
 
-    val values = IndexedSeq(EXCLUDE, INCLUDE)
+    val values = js.Object.freeze(js.Array(EXCLUDE, INCLUDE))
   }
 
   /**
@@ -4218,7 +4229,7 @@ package medialive {
     val EXPLICIT               = "EXPLICIT"
     val FOLLOWS_SEGMENT_NUMBER = "FOLLOWS_SEGMENT_NUMBER"
 
-    val values = IndexedSeq(EXPLICIT, FOLLOWS_SEGMENT_NUMBER)
+    val values = js.Object.freeze(js.Array(EXPLICIT, FOLLOWS_SEGMENT_NUMBER))
   }
 
   /**
@@ -4228,7 +4239,7 @@ package medialive {
     val GZIP = "GZIP"
     val NONE = "NONE"
 
-    val values = IndexedSeq(GZIP, NONE)
+    val values = js.Object.freeze(js.Array(GZIP, NONE))
   }
 
   /**
@@ -4238,7 +4249,7 @@ package medialive {
     val FLOATING_POINT = "FLOATING_POINT"
     val INTEGER        = "INTEGER"
 
-    val values = IndexedSeq(FLOATING_POINT, INTEGER)
+    val values = js.Object.freeze(js.Array(FLOATING_POINT, INTEGER))
   }
 
   /**
@@ -4277,7 +4288,7 @@ package medialive {
   object HlsMediaStoreStorageClassEnum {
     val TEMPORAL = "TEMPORAL"
 
-    val values = IndexedSeq(TEMPORAL)
+    val values = js.Object.freeze(js.Array(TEMPORAL))
   }
 
   /**
@@ -4287,7 +4298,7 @@ package medialive {
     val LIVE = "LIVE"
     val VOD  = "VOD"
 
-    val values = IndexedSeq(LIVE, VOD)
+    val values = js.Object.freeze(js.Array(LIVE, VOD))
   }
 
   /**
@@ -4297,7 +4308,7 @@ package medialive {
     val MANIFESTS_AND_SEGMENTS = "MANIFESTS_AND_SEGMENTS"
     val SEGMENTS_ONLY          = "SEGMENTS_ONLY"
 
-    val values = IndexedSeq(MANIFESTS_AND_SEGMENTS, SEGMENTS_ONLY)
+    val values = js.Object.freeze(js.Array(MANIFESTS_AND_SEGMENTS, SEGMENTS_ONLY))
   }
 
   /**
@@ -4333,7 +4344,7 @@ package medialive {
     val EXCLUDE = "EXCLUDE"
     val INCLUDE = "INCLUDE"
 
-    val values = IndexedSeq(EXCLUDE, INCLUDE)
+    val values = js.Object.freeze(js.Array(EXCLUDE, INCLUDE))
   }
 
   /**
@@ -4343,7 +4354,7 @@ package medialive {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -4353,7 +4364,7 @@ package medialive {
     val USE_INPUT_SEGMENTATION = "USE_INPUT_SEGMENTATION"
     val USE_SEGMENT_DURATION   = "USE_SEGMENT_DURATION"
 
-    val values = IndexedSeq(USE_INPUT_SEGMENTATION, USE_SEGMENT_DURATION)
+    val values = js.Object.freeze(js.Array(USE_INPUT_SEGMENTATION, USE_SEGMENT_DURATION))
   }
 
   /**
@@ -4384,7 +4395,7 @@ package medialive {
     val EXCLUDE = "EXCLUDE"
     val INCLUDE = "INCLUDE"
 
-    val values = IndexedSeq(EXCLUDE, INCLUDE)
+    val values = js.Object.freeze(js.Array(EXCLUDE, INCLUDE))
   }
 
   /**
@@ -4395,7 +4406,7 @@ package medialive {
     val PRIV = "PRIV"
     val TDRL = "TDRL"
 
-    val values = IndexedSeq(NONE, PRIV, TDRL)
+    val values = js.Object.freeze(js.Array(NONE, PRIV, TDRL))
   }
 
   /**
@@ -4425,7 +4436,7 @@ package medialive {
     val SEGMENTED_FILES = "SEGMENTED_FILES"
     val SINGLE_FILE     = "SINGLE_FILE"
 
-    val values = IndexedSeq(SEGMENTED_FILES, SINGLE_FILE)
+    val values = js.Object.freeze(js.Array(SEGMENTED_FILES, SINGLE_FILE))
   }
 
   /**
@@ -4435,7 +4446,7 @@ package medialive {
     val CHUNKED     = "CHUNKED"
     val NON_CHUNKED = "NON_CHUNKED"
 
-    val values = IndexedSeq(CHUNKED, NON_CHUNKED)
+    val values = js.Object.freeze(js.Array(CHUNKED, NON_CHUNKED))
   }
 
   /**
@@ -4475,7 +4486,7 @@ package medialive {
     val DISABLED = "DISABLED"
     val STANDARD = "STANDARD"
 
-    val values = IndexedSeq(DISABLED, STANDARD)
+    val values = js.Object.freeze(js.Array(DISABLED, STANDARD))
   }
 
   /**
@@ -4604,7 +4615,7 @@ package medialive {
     val STANDARD        = "STANDARD"
     val SINGLE_PIPELINE = "SINGLE_PIPELINE"
 
-    val values = IndexedSeq(STANDARD, SINGLE_PIPELINE)
+    val values = js.Object.freeze(js.Array(STANDARD, SINGLE_PIPELINE))
   }
 
   /**
@@ -4641,7 +4652,7 @@ package medialive {
     val AVC   = "AVC"
     val HEVC  = "HEVC"
 
-    val values = IndexedSeq(MPEG2, AVC, HEVC)
+    val values = js.Object.freeze(js.Array(MPEG2, AVC, HEVC))
   }
 
   /**
@@ -4651,7 +4662,7 @@ package medialive {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -4661,7 +4672,7 @@ package medialive {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -4738,7 +4749,7 @@ package medialive {
     val DISABLED = "DISABLED"
     val FORCED   = "FORCED"
 
-    val values = IndexedSeq(AUTO, DISABLED, FORCED)
+    val values = js.Object.freeze(js.Array(AUTO, DISABLED, FORCED))
   }
 
   /**
@@ -4774,7 +4785,7 @@ package medialive {
     val EMIT_OUTPUT  = "EMIT_OUTPUT"
     val PAUSE_OUTPUT = "PAUSE_OUTPUT"
 
-    val values = IndexedSeq(EMIT_OUTPUT, PAUSE_OUTPUT)
+    val values = js.Object.freeze(js.Array(EMIT_OUTPUT, PAUSE_OUTPUT))
   }
 
   /**
@@ -4784,7 +4795,7 @@ package medialive {
     val EMIT_OUTPUT  = "EMIT_OUTPUT"
     val PAUSE_OUTPUT = "PAUSE_OUTPUT"
 
-    val values = IndexedSeq(EMIT_OUTPUT, PAUSE_OUTPUT)
+    val values = js.Object.freeze(js.Array(EMIT_OUTPUT, PAUSE_OUTPUT))
   }
 
   /**
@@ -4794,7 +4805,7 @@ package medialive {
     val EMIT_OUTPUT  = "EMIT_OUTPUT"
     val PAUSE_OUTPUT = "PAUSE_OUTPUT"
 
-    val values = IndexedSeq(EMIT_OUTPUT, PAUSE_OUTPUT)
+    val values = js.Object.freeze(js.Array(EMIT_OUTPUT, PAUSE_OUTPUT))
   }
 
   /**
@@ -4805,7 +4816,7 @@ package medialive {
     val DROP_TS      = "DROP_TS"
     val EMIT_PROGRAM = "EMIT_PROGRAM"
 
-    val values = IndexedSeq(DROP_PROGRAM, DROP_TS, EMIT_PROGRAM)
+    val values = js.Object.freeze(js.Array(DROP_PROGRAM, DROP_TS, EMIT_PROGRAM))
   }
 
   /**
@@ -4845,7 +4856,7 @@ package medialive {
     val COLOR = "COLOR"
     val SLATE = "SLATE"
 
-    val values = IndexedSeq(COLOR, SLATE)
+    val values = js.Object.freeze(js.Array(COLOR, SLATE))
   }
 
   /**
@@ -4856,7 +4867,7 @@ package medialive {
     val MAX_20_MBPS = "MAX_20_MBPS"
     val MAX_50_MBPS = "MAX_50_MBPS"
 
-    val values = IndexedSeq(MAX_10_MBPS, MAX_20_MBPS, MAX_50_MBPS)
+    val values = js.Object.freeze(js.Array(MAX_10_MBPS, MAX_20_MBPS, MAX_50_MBPS))
   }
 
   /**
@@ -4867,7 +4878,7 @@ package medialive {
     val HD  = "HD"
     val UHD = "UHD"
 
-    val values = IndexedSeq(SD, HD, UHD)
+    val values = js.Object.freeze(js.Array(SD, HD, UHD))
   }
 
   /**
@@ -4912,7 +4923,7 @@ package medialive {
     val UPDATING = "UPDATING"
     val DELETED  = "DELETED"
 
-    val values = IndexedSeq(IDLE, IN_USE, UPDATING, DELETED)
+    val values = js.Object.freeze(js.Array(IDLE, IN_USE, UPDATING, DELETED))
   }
 
   /**
@@ -4988,7 +4999,7 @@ package medialive {
     val CONTINUE = "CONTINUE"
     val LOOP     = "LOOP"
 
-    val values = IndexedSeq(CONTINUE, LOOP)
+    val values = js.Object.freeze(js.Array(CONTINUE, LOOP))
   }
 
   /**
@@ -5024,7 +5035,7 @@ package medialive {
     val STATIC  = "STATIC"
     val DYNAMIC = "DYNAMIC"
 
-    val values = IndexedSeq(STATIC, DYNAMIC)
+    val values = js.Object.freeze(js.Array(STATIC, DYNAMIC))
   }
 
   /**
@@ -5061,7 +5072,7 @@ package medialive {
     val DELETING = "DELETING"
     val DELETED  = "DELETED"
 
-    val values = IndexedSeq(CREATING, DETACHED, ATTACHED, DELETING, DELETED)
+    val values = js.Object.freeze(js.Array(CREATING, DETACHED, ATTACHED, DELETING, DELETED))
   }
 
   /**
@@ -5097,7 +5108,7 @@ package medialive {
     val ZEROBASED = "ZEROBASED"
     val EMBEDDED  = "EMBEDDED"
 
-    val values = IndexedSeq(ZEROBASED, EMBEDDED)
+    val values = js.Object.freeze(js.Array(ZEROBASED, EMBEDDED))
   }
 
   /**
@@ -5112,7 +5123,7 @@ package medialive {
     val MP4_FILE     = "MP4_FILE"
     val MEDIACONNECT = "MEDIACONNECT"
 
-    val values = IndexedSeq(UDP_PUSH, RTP_PUSH, RTMP_PUSH, RTMP_PULL, URL_PULL, MP4_FILE, MEDIACONNECT)
+    val values = js.Object.freeze(js.Array(UDP_PUSH, RTP_PUSH, RTMP_PUSH, RTMP_PULL, URL_PULL, MP4_FILE, MEDIACONNECT))
   }
 
   /**
@@ -5202,7 +5213,7 @@ package medialive {
     val EXCLUDE_LAST_FRAME = "EXCLUDE_LAST_FRAME"
     val INCLUDE_LAST_FRAME = "INCLUDE_LAST_FRAME"
 
-    val values = IndexedSeq(EXCLUDE_LAST_FRAME, INCLUDE_LAST_FRAME)
+    val values = js.Object.freeze(js.Array(EXCLUDE_LAST_FRAME, INCLUDE_LAST_FRAME))
   }
 
   /**
@@ -5514,7 +5525,7 @@ package medialive {
     val DEBUG    = "DEBUG"
     val DISABLED = "DISABLED"
 
-    val values = IndexedSeq(ERROR, WARNING, INFO, DEBUG, DISABLED)
+    val values = js.Object.freeze(js.Array(ERROR, WARNING, INFO, DEBUG, DISABLED))
   }
 
   /**
@@ -5524,7 +5535,7 @@ package medialive {
     val DROP           = "DROP"
     val ENCODE_SILENCE = "ENCODE_SILENCE"
 
-    val values = IndexedSeq(DROP, ENCODE_SILENCE)
+    val values = js.Object.freeze(js.Array(DROP, ENCODE_SILENCE))
   }
 
   /**
@@ -5534,7 +5545,7 @@ package medialive {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -5544,7 +5555,7 @@ package medialive {
     val AUTO           = "AUTO"
     val USE_CONFIGURED = "USE_CONFIGURED"
 
-    val values = IndexedSeq(AUTO, USE_CONFIGURED)
+    val values = js.Object.freeze(js.Array(AUTO, USE_CONFIGURED))
   }
 
   /**
@@ -5554,7 +5565,7 @@ package medialive {
     val ATSC = "ATSC"
     val DVB  = "DVB"
 
-    val values = IndexedSeq(ATSC, DVB)
+    val values = js.Object.freeze(js.Array(ATSC, DVB))
   }
 
   /**
@@ -5564,7 +5575,7 @@ package medialive {
     val VIDEO_AND_FIXED_INTERVALS = "VIDEO_AND_FIXED_INTERVALS"
     val VIDEO_INTERVAL            = "VIDEO_INTERVAL"
 
-    val values = IndexedSeq(VIDEO_AND_FIXED_INTERVALS, VIDEO_INTERVAL)
+    val values = js.Object.freeze(js.Array(VIDEO_AND_FIXED_INTERVALS, VIDEO_INTERVAL))
   }
 
   /**
@@ -5574,7 +5585,7 @@ package medialive {
     val ATSC = "ATSC"
     val DVB  = "DVB"
 
-    val values = IndexedSeq(ATSC, DVB)
+    val values = js.Object.freeze(js.Array(ATSC, DVB))
   }
 
   /**
@@ -5584,7 +5595,7 @@ package medialive {
     val MULTIPLEX = "MULTIPLEX"
     val NONE      = "NONE"
 
-    val values = IndexedSeq(MULTIPLEX, NONE)
+    val values = js.Object.freeze(js.Array(MULTIPLEX, NONE))
   }
 
   /**
@@ -5594,7 +5605,7 @@ package medialive {
     val DISABLED = "DISABLED"
     val ENABLED  = "ENABLED"
 
-    val values = IndexedSeq(DISABLED, ENABLED)
+    val values = js.Object.freeze(js.Array(DISABLED, ENABLED))
   }
 
   /**
@@ -5604,7 +5615,7 @@ package medialive {
     val NONE        = "NONE"
     val PASSTHROUGH = "PASSTHROUGH"
 
-    val values = IndexedSeq(NONE, PASSTHROUGH)
+    val values = js.Object.freeze(js.Array(NONE, PASSTHROUGH))
   }
 
   /**
@@ -5614,7 +5625,7 @@ package medialive {
     val VIDEO_AND_AUDIO_PIDS = "VIDEO_AND_AUDIO_PIDS"
     val VIDEO_PID            = "VIDEO_PID"
 
-    val values = IndexedSeq(VIDEO_AND_AUDIO_PIDS, VIDEO_PID)
+    val values = js.Object.freeze(js.Array(VIDEO_AND_AUDIO_PIDS, VIDEO_PID))
   }
 
   /**
@@ -5624,7 +5635,7 @@ package medialive {
     val EXCLUDE = "EXCLUDE"
     val INCLUDE = "INCLUDE"
 
-    val values = IndexedSeq(EXCLUDE, INCLUDE)
+    val values = js.Object.freeze(js.Array(EXCLUDE, INCLUDE))
   }
 
   /**
@@ -5634,7 +5645,7 @@ package medialive {
     val NONE        = "NONE"
     val PASSTHROUGH = "PASSTHROUGH"
 
-    val values = IndexedSeq(NONE, PASSTHROUGH)
+    val values = js.Object.freeze(js.Array(NONE, PASSTHROUGH))
   }
 
   /**
@@ -5644,7 +5655,7 @@ package medialive {
     val CONFIGURED_PCR_PERIOD = "CONFIGURED_PCR_PERIOD"
     val PCR_EVERY_PES_PACKET  = "PCR_EVERY_PES_PACKET"
 
-    val values = IndexedSeq(CONFIGURED_PCR_PERIOD, PCR_EVERY_PES_PACKET)
+    val values = js.Object.freeze(js.Array(CONFIGURED_PCR_PERIOD, PCR_EVERY_PES_PACKET))
   }
 
   /**
@@ -5654,7 +5665,7 @@ package medialive {
     val CBR = "CBR"
     val VBR = "VBR"
 
-    val values = IndexedSeq(CBR, VBR)
+    val values = js.Object.freeze(js.Array(CBR, VBR))
   }
 
   /**
@@ -5664,7 +5675,7 @@ package medialive {
     val NONE        = "NONE"
     val PASSTHROUGH = "PASSTHROUGH"
 
-    val values = IndexedSeq(NONE, PASSTHROUGH)
+    val values = js.Object.freeze(js.Array(NONE, PASSTHROUGH))
   }
 
   /**
@@ -5678,7 +5689,7 @@ package medialive {
     val RAI_ADAPT    = "RAI_ADAPT"
     val RAI_SEGSTART = "RAI_SEGSTART"
 
-    val values = IndexedSeq(EBP, EBP_LEGACY, NONE, PSI_SEGSTART, RAI_ADAPT, RAI_SEGSTART)
+    val values = js.Object.freeze(js.Array(EBP, EBP_LEGACY, NONE, PSI_SEGSTART, RAI_ADAPT, RAI_SEGSTART))
   }
 
   /**
@@ -5688,7 +5699,7 @@ package medialive {
     val MAINTAIN_CADENCE = "MAINTAIN_CADENCE"
     val RESET_CADENCE    = "RESET_CADENCE"
 
-    val values = IndexedSeq(MAINTAIN_CADENCE, RESET_CADENCE)
+    val values = js.Object.freeze(js.Array(MAINTAIN_CADENCE, RESET_CADENCE))
   }
 
   /**
@@ -5851,7 +5862,7 @@ package medialive {
     val NO_PASSTHROUGH = "NO_PASSTHROUGH"
     val PASSTHROUGH    = "PASSTHROUGH"
 
-    val values = IndexedSeq(NO_PASSTHROUGH, PASSTHROUGH)
+    val values = js.Object.freeze(js.Array(NO_PASSTHROUGH, PASSTHROUGH))
   }
 
   /**
@@ -5861,7 +5872,7 @@ package medialive {
     val CONFIGURED_PCR_PERIOD = "CONFIGURED_PCR_PERIOD"
     val PCR_EVERY_PES_PACKET  = "PCR_EVERY_PES_PACKET"
 
-    val values = IndexedSeq(CONFIGURED_PCR_PERIOD, PCR_EVERY_PES_PACKET)
+    val values = js.Object.freeze(js.Array(CONFIGURED_PCR_PERIOD, PCR_EVERY_PES_PACKET))
   }
 
   /**
@@ -5871,7 +5882,7 @@ package medialive {
     val NO_PASSTHROUGH = "NO_PASSTHROUGH"
     val PASSTHROUGH    = "PASSTHROUGH"
 
-    val values = IndexedSeq(NO_PASSTHROUGH, PASSTHROUGH)
+    val values = js.Object.freeze(js.Array(NO_PASSTHROUGH, PASSTHROUGH))
   }
 
   /**
@@ -5944,7 +5955,7 @@ package medialive {
     val NO_PASSTHROUGH = "NO_PASSTHROUGH"
     val PASSTHROUGH    = "PASSTHROUGH"
 
-    val values = IndexedSeq(NO_PASSTHROUGH, PASSTHROUGH)
+    val values = js.Object.freeze(js.Array(NO_PASSTHROUGH, PASSTHROUGH))
   }
 
   /**
@@ -6043,7 +6054,7 @@ package medialive {
     val CODING_MODE_1_0 = "CODING_MODE_1_0"
     val CODING_MODE_2_0 = "CODING_MODE_2_0"
 
-    val values = IndexedSeq(CODING_MODE_1_0, CODING_MODE_2_0)
+    val values = js.Object.freeze(js.Array(CODING_MODE_1_0, CODING_MODE_2_0))
   }
 
   /**
@@ -6169,7 +6180,7 @@ package medialive {
     val CHECK_CRYPTOGRAPHY_AND_VALIDATE_NAME = "CHECK_CRYPTOGRAPHY_AND_VALIDATE_NAME"
     val CHECK_CRYPTOGRAPHY_ONLY              = "CHECK_CRYPTOGRAPHY_ONLY"
 
-    val values = IndexedSeq(CHECK_CRYPTOGRAPHY_AND_VALIDATE_NAME, CHECK_CRYPTOGRAPHY_ONLY)
+    val values = js.Object.freeze(js.Array(CHECK_CRYPTOGRAPHY_AND_VALIDATE_NAME, CHECK_CRYPTOGRAPHY_ONLY))
   }
 
   /**
@@ -6247,7 +6258,7 @@ package medialive {
   object OfferingDurationUnitsEnum {
     val MONTHS = "MONTHS"
 
-    val values = IndexedSeq(MONTHS)
+    val values = js.Object.freeze(js.Array(MONTHS))
   }
 
   /**
@@ -6256,7 +6267,7 @@ package medialive {
   object OfferingTypeEnum {
     val NO_UPFRONT = "NO_UPFRONT"
 
-    val values = IndexedSeq(NO_UPFRONT)
+    val values = js.Object.freeze(js.Array(NO_UPFRONT))
   }
 
   /**
@@ -6522,7 +6533,7 @@ package medialive {
     val PIPELINE_0 = "PIPELINE_0"
     val PIPELINE_1 = "PIPELINE_1"
 
-    val values = IndexedSeq(PIPELINE_0, PIPELINE_1)
+    val values = js.Object.freeze(js.Array(PIPELINE_0, PIPELINE_1))
   }
 
   /**
@@ -6702,7 +6713,7 @@ package medialive {
     val HEVC  = "HEVC"
     val AUDIO = "AUDIO"
 
-    val values = IndexedSeq(MPEG2, AVC, HEVC, AUDIO)
+    val values = js.Object.freeze(js.Array(MPEG2, AVC, HEVC, AUDIO))
   }
 
   /**
@@ -6713,7 +6724,7 @@ package medialive {
     val MAX_20_MBPS = "MAX_20_MBPS"
     val MAX_50_MBPS = "MAX_50_MBPS"
 
-    val values = IndexedSeq(MAX_10_MBPS, MAX_20_MBPS, MAX_50_MBPS)
+    val values = js.Object.freeze(js.Array(MAX_10_MBPS, MAX_20_MBPS, MAX_50_MBPS))
   }
 
   /**
@@ -6723,7 +6734,7 @@ package medialive {
     val MAX_30_FPS = "MAX_30_FPS"
     val MAX_60_FPS = "MAX_60_FPS"
 
-    val values = IndexedSeq(MAX_30_FPS, MAX_60_FPS)
+    val values = js.Object.freeze(js.Array(MAX_30_FPS, MAX_60_FPS))
   }
 
   /**
@@ -6734,7 +6745,7 @@ package medialive {
     val HD  = "HD"
     val UHD = "UHD"
 
-    val values = IndexedSeq(SD, HD, UHD)
+    val values = js.Object.freeze(js.Array(SD, HD, UHD))
   }
 
   /**
@@ -6784,7 +6795,7 @@ package medialive {
     val OUTPUT  = "OUTPUT"
     val CHANNEL = "CHANNEL"
 
-    val values = IndexedSeq(INPUT, OUTPUT, CHANNEL)
+    val values = js.Object.freeze(js.Array(INPUT, OUTPUT, CHANNEL))
   }
 
   /**
@@ -6794,7 +6805,7 @@ package medialive {
     val ADVANCED_AUDIO      = "ADVANCED_AUDIO"
     val AUDIO_NORMALIZATION = "AUDIO_NORMALIZATION"
 
-    val values = IndexedSeq(ADVANCED_AUDIO, AUDIO_NORMALIZATION)
+    val values = js.Object.freeze(js.Array(ADVANCED_AUDIO, AUDIO_NORMALIZATION))
   }
 
   /**
@@ -6806,7 +6817,7 @@ package medialive {
     val CANCELED = "CANCELED"
     val DELETED  = "DELETED"
 
-    val values = IndexedSeq(ACTIVE, EXPIRED, CANCELED, DELETED)
+    val values = js.Object.freeze(js.Array(ACTIVE, EXPIRED, CANCELED, DELETED))
   }
 
   /**
@@ -6817,7 +6828,7 @@ package medialive {
     val ENHANCED = "ENHANCED"
     val PREMIUM  = "PREMIUM"
 
-    val values = IndexedSeq(STANDARD, ENHANCED, PREMIUM)
+    val values = js.Object.freeze(js.Array(STANDARD, ENHANCED, PREMIUM))
   }
 
   /**
@@ -6827,7 +6838,7 @@ package medialive {
     val DISCONNECT_IMMEDIATELY = "DISCONNECT_IMMEDIATELY"
     val WAIT_FOR_SERVER        = "WAIT_FOR_SERVER"
 
-    val values = IndexedSeq(DISCONNECT_IMMEDIATELY, WAIT_FOR_SERVER)
+    val values = js.Object.freeze(js.Array(DISCONNECT_IMMEDIATELY, WAIT_FOR_SERVER))
   }
 
   /**
@@ -6838,7 +6849,7 @@ package medialive {
     val FIELD1_608            = "FIELD1_608"
     val FIELD1_AND_FIELD2_608 = "FIELD1_AND_FIELD2_608"
 
-    val values = IndexedSeq(ALL, FIELD1_608, FIELD1_AND_FIELD2_608)
+    val values = js.Object.freeze(js.Array(ALL, FIELD1_608, FIELD1_AND_FIELD2_608))
   }
 
   /**
@@ -6896,7 +6907,7 @@ package medialive {
     val SELF_SIGNED         = "SELF_SIGNED"
     val VERIFY_AUTHENTICITY = "VERIFY_AUTHENTICITY"
 
-    val values = IndexedSeq(SELF_SIGNED, VERIFY_AUTHENTICITY)
+    val values = js.Object.freeze(js.Array(SELF_SIGNED, VERIFY_AUTHENTICITY))
   }
 
   /**
@@ -7034,7 +7045,7 @@ package medialive {
     val DISABLED  = "DISABLED"
     val UPCONVERT = "UPCONVERT"
 
-    val values = IndexedSeq(DISABLED, UPCONVERT)
+    val values = js.Object.freeze(js.Array(DISABLED, UPCONVERT))
   }
 
   /**
@@ -7113,7 +7124,7 @@ package medialive {
     val FOLLOW = "FOLLOW"
     val IGNORE = "IGNORE"
 
-    val values = IndexedSeq(FOLLOW, IGNORE)
+    val values = js.Object.freeze(js.Array(FOLLOW, IGNORE))
   }
 
   /**
@@ -7123,7 +7134,7 @@ package medialive {
     val FOLLOW = "FOLLOW"
     val IGNORE = "IGNORE"
 
-    val values = IndexedSeq(FOLLOW, IGNORE)
+    val values = js.Object.freeze(js.Array(FOLLOW, IGNORE))
   }
 
   /**
@@ -7133,7 +7144,7 @@ package medialive {
     val ARCHIVE_NOT_ALLOWED = "ARCHIVE_NOT_ALLOWED"
     val ARCHIVE_ALLOWED     = "ARCHIVE_ALLOWED"
 
-    val values = IndexedSeq(ARCHIVE_NOT_ALLOWED, ARCHIVE_ALLOWED)
+    val values = js.Object.freeze(js.Array(ARCHIVE_NOT_ALLOWED, ARCHIVE_ALLOWED))
   }
 
   /**
@@ -7215,7 +7226,7 @@ package medialive {
     val RESTRICT_GROUP1 = "RESTRICT_GROUP1"
     val RESTRICT_GROUP2 = "RESTRICT_GROUP2"
 
-    val values = IndexedSeq(NONE, RESTRICT_GROUP0, RESTRICT_GROUP1, RESTRICT_GROUP2)
+    val values = js.Object.freeze(js.Array(NONE, RESTRICT_GROUP0, RESTRICT_GROUP1, RESTRICT_GROUP2))
   }
 
   /**
@@ -7225,7 +7236,7 @@ package medialive {
     val REGIONAL_BLACKOUT    = "REGIONAL_BLACKOUT"
     val NO_REGIONAL_BLACKOUT = "NO_REGIONAL_BLACKOUT"
 
-    val values = IndexedSeq(REGIONAL_BLACKOUT, NO_REGIONAL_BLACKOUT)
+    val values = js.Object.freeze(js.Array(REGIONAL_BLACKOUT, NO_REGIONAL_BLACKOUT))
   }
 
   /**
@@ -7255,7 +7266,7 @@ package medialive {
     val SEGMENTATION_EVENT_NOT_CANCELED = "SEGMENTATION_EVENT_NOT_CANCELED"
     val SEGMENTATION_EVENT_CANCELED     = "SEGMENTATION_EVENT_CANCELED"
 
-    val values = IndexedSeq(SEGMENTATION_EVENT_NOT_CANCELED, SEGMENTATION_EVENT_CANCELED)
+    val values = js.Object.freeze(js.Array(SEGMENTATION_EVENT_NOT_CANCELED, SEGMENTATION_EVENT_CANCELED))
   }
 
   /**
@@ -7339,7 +7350,7 @@ package medialive {
     val FOLLOW = "FOLLOW"
     val IGNORE = "IGNORE"
 
-    val values = IndexedSeq(FOLLOW, IGNORE)
+    val values = js.Object.freeze(js.Array(FOLLOW, IGNORE))
   }
 
   /**
@@ -7372,7 +7383,7 @@ package medialive {
     val FOLLOW = "FOLLOW"
     val IGNORE = "IGNORE"
 
-    val values = IndexedSeq(FOLLOW, IGNORE)
+    val values = js.Object.freeze(js.Array(FOLLOW, IGNORE))
   }
 
   /**
@@ -7426,7 +7437,7 @@ package medialive {
     val WEB_DELIVERY_NOT_ALLOWED = "WEB_DELIVERY_NOT_ALLOWED"
     val WEB_DELIVERY_ALLOWED     = "WEB_DELIVERY_ALLOWED"
 
-    val values = IndexedSeq(WEB_DELIVERY_NOT_ALLOWED, WEB_DELIVERY_ALLOWED)
+    val values = js.Object.freeze(js.Array(WEB_DELIVERY_NOT_ALLOWED, WEB_DELIVERY_ALLOWED))
   }
 
   /**
@@ -7436,7 +7447,7 @@ package medialive {
     val PASSTHROUGH          = "PASSTHROUGH"
     val USE_CONFIGURED_CLOCK = "USE_CONFIGURED_CLOCK"
 
-    val values = IndexedSeq(PASSTHROUGH, USE_CONFIGURED_CLOCK)
+    val values = js.Object.freeze(js.Array(PASSTHROUGH, USE_CONFIGURED_CLOCK))
   }
 
   /**
@@ -7446,7 +7457,7 @@ package medialive {
     val SELF_SIGNED         = "SELF_SIGNED"
     val VERIFY_AUTHENTICITY = "VERIFY_AUTHENTICITY"
 
-    val values = IndexedSeq(SELF_SIGNED, VERIFY_AUTHENTICITY)
+    val values = js.Object.freeze(js.Array(SELF_SIGNED, VERIFY_AUTHENTICITY))
   }
 
   /**
@@ -7457,7 +7468,7 @@ package medialive {
     val USE_CONFIGURED = "USE_CONFIGURED"
     val USE_TIMESTAMP  = "USE_TIMESTAMP"
 
-    val values = IndexedSeq(NO_EVENT_ID, USE_CONFIGURED, USE_TIMESTAMP)
+    val values = js.Object.freeze(js.Array(NO_EVENT_ID, USE_CONFIGURED, USE_TIMESTAMP))
   }
 
   /**
@@ -7467,7 +7478,7 @@ package medialive {
     val NONE     = "NONE"
     val SEND_EOS = "SEND_EOS"
 
-    val values = IndexedSeq(NONE, SEND_EOS)
+    val values = js.Object.freeze(js.Array(NONE, SEND_EOS))
   }
 
   /**
@@ -7477,7 +7488,7 @@ package medialive {
     val USE_INPUT_SEGMENTATION = "USE_INPUT_SEGMENTATION"
     val USE_SEGMENT_DURATION   = "USE_SEGMENT_DURATION"
 
-    val values = IndexedSeq(USE_INPUT_SEGMENTATION, USE_SEGMENT_DURATION)
+    val values = js.Object.freeze(js.Array(USE_INPUT_SEGMENTATION, USE_SEGMENT_DURATION))
   }
 
   /**
@@ -7487,7 +7498,7 @@ package medialive {
     val NONE    = "NONE"
     val SCTE_35 = "SCTE_35"
 
-    val values = IndexedSeq(NONE, SCTE_35)
+    val values = js.Object.freeze(js.Array(NONE, SCTE_35))
   }
 
   /**
@@ -7497,7 +7508,7 @@ package medialive {
     val DO_NOT_SEND = "DO_NOT_SEND"
     val SEND        = "SEND"
 
-    val values = IndexedSeq(DO_NOT_SEND, SEND)
+    val values = js.Object.freeze(js.Array(DO_NOT_SEND, SEND))
   }
 
   /**
@@ -7507,7 +7518,7 @@ package medialive {
     val USE_CONFIGURED_OFFSET = "USE_CONFIGURED_OFFSET"
     val USE_EVENT_START_DATE  = "USE_EVENT_START_DATE"
 
-    val values = IndexedSeq(USE_CONFIGURED_OFFSET, USE_EVENT_START_DATE)
+    val values = js.Object.freeze(js.Array(USE_CONFIGURED_OFFSET, USE_EVENT_START_DATE))
   }
 
   /**
@@ -7902,7 +7913,7 @@ package medialive {
     val SYSTEMCLOCK = "SYSTEMCLOCK"
     val ZEROBASED   = "ZEROBASED"
 
-    val values = IndexedSeq(EMBEDDED, SYSTEMCLOCK, ZEROBASED)
+    val values = js.Object.freeze(js.Array(EMBEDDED, SYSTEMCLOCK, ZEROBASED))
   }
 
   /**
@@ -7930,7 +7941,7 @@ package medialive {
     val PASSTHROUGH    = "PASSTHROUGH"
     val USE_CONFIGURED = "USE_CONFIGURED"
 
-    val values = IndexedSeq(PASSTHROUGH, USE_CONFIGURED)
+    val values = js.Object.freeze(js.Array(PASSTHROUGH, USE_CONFIGURED))
   }
 
   /**
@@ -8012,7 +8023,7 @@ package medialive {
     val PRIV = "PRIV"
     val TDRL = "TDRL"
 
-    val values = IndexedSeq(NONE, PRIV, TDRL)
+    val values = js.Object.freeze(js.Array(NONE, PRIV, TDRL))
   }
 
   /**
@@ -8326,7 +8337,7 @@ package medialive {
     val PASSTHROUGH = "PASSTHROUGH"
     val RESPOND     = "RESPOND"
 
-    val values = IndexedSeq(NONE, PASSTHROUGH, RESPOND)
+    val values = js.Object.freeze(js.Array(NONE, PASSTHROUGH, RESPOND))
   }
 
   /**
@@ -8336,7 +8347,7 @@ package medialive {
     val DEFAULT           = "DEFAULT"
     val STRETCH_TO_OUTPUT = "STRETCH_TO_OUTPUT"
 
-    val values = IndexedSeq(DEFAULT, STRETCH_TO_OUTPUT)
+    val values = js.Object.freeze(js.Array(DEFAULT, STRETCH_TO_OUTPUT))
   }
 
   /**
@@ -8371,7 +8382,7 @@ package medialive {
     val REC_601 = "REC_601"
     val REC_709 = "REC_709"
 
-    val values = IndexedSeq(FOLLOW, REC_601, REC_709)
+    val values = js.Object.freeze(js.Array(FOLLOW, REC_601, REC_709))
   }
 
   /**
@@ -8381,7 +8392,7 @@ package medialive {
     val FALLBACK = "FALLBACK"
     val FORCE    = "FORCE"
 
-    val values = IndexedSeq(FALLBACK, FORCE)
+    val values = js.Object.freeze(js.Array(FALLBACK, FORCE))
   }
 
   /**
diff --git a/services/mediapackage/src/main/scala/facade/amazonaws/services/MediaPackage.scala b/services/mediapackage/src/main/scala/facade/amazonaws/services/MediaPackage.scala
index a1b704e84..11a7de272 100644
--- a/services/mediapackage/src/main/scala/facade/amazonaws/services/MediaPackage.scala
+++ b/services/mediapackage/src/main/scala/facade/amazonaws/services/MediaPackage.scala
@@ -100,7 +100,7 @@ package mediapackage {
     val SCTE35_ENHANCED = "SCTE35_ENHANCED"
     val PASSTHROUGH     = "PASSTHROUGH"
 
-    val values = IndexedSeq(NONE, SCTE35_ENHANCED, PASSTHROUGH)
+    val values = js.Object.freeze(js.Array(NONE, SCTE35_ENHANCED, PASSTHROUGH))
   }
 
   /**
@@ -119,7 +119,7 @@ package mediapackage {
     val UNRESTRICTED = "UNRESTRICTED"
     val BOTH         = "BOTH"
 
-    val values = IndexedSeq(NONE, RESTRICTED, UNRESTRICTED, BOTH)
+    val values = js.Object.freeze(js.Array(NONE, RESTRICTED, UNRESTRICTED, BOTH))
   }
 
   /**
@@ -651,7 +651,7 @@ package mediapackage {
     val AES_128    = "AES_128"
     val SAMPLE_AES = "SAMPLE_AES"
 
-    val values = IndexedSeq(AES_128, SAMPLE_AES)
+    val values = js.Object.freeze(js.Array(AES_128, SAMPLE_AES))
   }
 
   /**
@@ -983,7 +983,7 @@ package mediapackage {
     val FULL    = "FULL"
     val COMPACT = "COMPACT"
 
-    val values = IndexedSeq(FULL, COMPACT)
+    val values = js.Object.freeze(js.Array(FULL, COMPACT))
   }
 
   /**
@@ -1095,14 +1095,14 @@ package mediapackage {
     val EVENT = "EVENT"
     val VOD   = "VOD"
 
-    val values = IndexedSeq(NONE, EVENT, VOD)
+    val values = js.Object.freeze(js.Array(NONE, EVENT, VOD))
   }
 
   object ProfileEnum {
     val NONE      = "NONE"
     val HBBTV_1_5 = "HBBTV_1_5"
 
-    val values = IndexedSeq(NONE, HBBTV_1_5)
+    val values = js.Object.freeze(js.Array(NONE, HBBTV_1_5))
   }
 
   @deprecated("Deprecated in AWS SDK", "forever")
@@ -1203,7 +1203,7 @@ package mediapackage {
     val TIME_WITH_TIMELINE   = "TIME_WITH_TIMELINE"
     val NUMBER_WITH_DURATION = "NUMBER_WITH_DURATION"
 
-    val values = IndexedSeq(NUMBER_WITH_TIMELINE, TIME_WITH_TIMELINE, NUMBER_WITH_DURATION)
+    val values = js.Object.freeze(js.Array(NUMBER_WITH_TIMELINE, TIME_WITH_TIMELINE, NUMBER_WITH_DURATION))
   }
 
   /**
@@ -1243,7 +1243,7 @@ package mediapackage {
     val VIDEO_BITRATE_ASCENDING  = "VIDEO_BITRATE_ASCENDING"
     val VIDEO_BITRATE_DESCENDING = "VIDEO_BITRATE_DESCENDING"
 
-    val values = IndexedSeq(ORIGINAL, VIDEO_BITRATE_ASCENDING, VIDEO_BITRATE_DESCENDING)
+    val values = js.Object.freeze(js.Array(ORIGINAL, VIDEO_BITRATE_ASCENDING, VIDEO_BITRATE_DESCENDING))
   }
 
   /**
@@ -1471,21 +1471,23 @@ package mediapackage {
     val PROVIDER_OVERLAY_PLACEMENT_OPPORTUNITY    = "PROVIDER_OVERLAY_PLACEMENT_OPPORTUNITY"
     val DISTRIBUTOR_OVERLAY_PLACEMENT_OPPORTUNITY = "DISTRIBUTOR_OVERLAY_PLACEMENT_OPPORTUNITY"
 
-    val values = IndexedSeq(
-      SPLICE_INSERT,
-      BREAK,
-      PROVIDER_ADVERTISEMENT,
-      DISTRIBUTOR_ADVERTISEMENT,
-      PROVIDER_PLACEMENT_OPPORTUNITY,
-      DISTRIBUTOR_PLACEMENT_OPPORTUNITY,
-      PROVIDER_OVERLAY_PLACEMENT_OPPORTUNITY,
-      DISTRIBUTOR_OVERLAY_PLACEMENT_OPPORTUNITY
+    val values = js.Object.freeze(
+      js.Array(
+        SPLICE_INSERT,
+        BREAK,
+        PROVIDER_ADVERTISEMENT,
+        DISTRIBUTOR_ADVERTISEMENT,
+        PROVIDER_PLACEMENT_OPPORTUNITY,
+        DISTRIBUTOR_PLACEMENT_OPPORTUNITY,
+        PROVIDER_OVERLAY_PLACEMENT_OPPORTUNITY,
+        DISTRIBUTOR_OVERLAY_PLACEMENT_OPPORTUNITY
+      )
     )
   }
 
   object __PeriodTriggersElementEnum {
     val ADS = "ADS"
 
-    val values = IndexedSeq(ADS)
+    val values = js.Object.freeze(js.Array(ADS))
   }
 }
diff --git a/services/mediapackagevod/src/main/scala/facade/amazonaws/services/MediaPackageVod.scala b/services/mediapackagevod/src/main/scala/facade/amazonaws/services/MediaPackageVod.scala
index 5fc3f56fe..d4305e3c8 100644
--- a/services/mediapackagevod/src/main/scala/facade/amazonaws/services/MediaPackageVod.scala
+++ b/services/mediapackagevod/src/main/scala/facade/amazonaws/services/MediaPackageVod.scala
@@ -92,7 +92,7 @@ package mediapackagevod {
     val SCTE35_ENHANCED = "SCTE35_ENHANCED"
     val PASSTHROUGH     = "PASSTHROUGH"
 
-    val values = IndexedSeq(NONE, SCTE35_ENHANCED, PASSTHROUGH)
+    val values = js.Object.freeze(js.Array(NONE, SCTE35_ENHANCED, PASSTHROUGH))
   }
 
   /**
@@ -665,7 +665,7 @@ package mediapackagevod {
     val AES_128    = "AES_128"
     val SAMPLE_AES = "SAMPLE_AES"
 
-    val values = IndexedSeq(AES_128, SAMPLE_AES)
+    val values = js.Object.freeze(js.Array(AES_128, SAMPLE_AES))
   }
 
   /**
@@ -1002,7 +1002,7 @@ package mediapackagevod {
     val NONE      = "NONE"
     val HBBTV_1_5 = "HBBTV_1_5"
 
-    val values = IndexedSeq(NONE, HBBTV_1_5)
+    val values = js.Object.freeze(js.Array(NONE, HBBTV_1_5))
   }
 
   /**
@@ -1036,7 +1036,7 @@ package mediapackagevod {
     val VIDEO_BITRATE_ASCENDING  = "VIDEO_BITRATE_ASCENDING"
     val VIDEO_BITRATE_DESCENDING = "VIDEO_BITRATE_DESCENDING"
 
-    val values = IndexedSeq(ORIGINAL, VIDEO_BITRATE_ASCENDING, VIDEO_BITRATE_DESCENDING)
+    val values = js.Object.freeze(js.Array(ORIGINAL, VIDEO_BITRATE_ASCENDING, VIDEO_BITRATE_DESCENDING))
   }
 
   /**
diff --git a/services/mediastore/src/main/scala/facade/amazonaws/services/MediaStore.scala b/services/mediastore/src/main/scala/facade/amazonaws/services/MediaStore.scala
index 0ad4d26bb..08fcb97f5 100644
--- a/services/mediastore/src/main/scala/facade/amazonaws/services/MediaStore.scala
+++ b/services/mediastore/src/main/scala/facade/amazonaws/services/MediaStore.scala
@@ -138,7 +138,7 @@ package mediastore {
     val CREATING = "CREATING"
     val DELETING = "DELETING"
 
-    val values = IndexedSeq(ACTIVE, CREATING, DELETING)
+    val values = js.Object.freeze(js.Array(ACTIVE, CREATING, DELETING))
   }
 
   /**
@@ -534,7 +534,7 @@ package mediastore {
     val DELETE = "DELETE"
     val HEAD   = "HEAD"
 
-    val values = IndexedSeq(PUT, GET, DELETE, HEAD)
+    val values = js.Object.freeze(js.Array(PUT, GET, DELETE, HEAD))
   }
 
   @js.native
diff --git a/services/mediastoredata/src/main/scala/facade/amazonaws/services/MediaStoreData.scala b/services/mediastoredata/src/main/scala/facade/amazonaws/services/MediaStoreData.scala
index 44c08a14c..c1677f7b2 100644
--- a/services/mediastoredata/src/main/scala/facade/amazonaws/services/MediaStoreData.scala
+++ b/services/mediastoredata/src/main/scala/facade/amazonaws/services/MediaStoreData.scala
@@ -225,7 +225,7 @@ package mediastoredata {
     val OBJECT = "OBJECT"
     val FOLDER = "FOLDER"
 
-    val values = IndexedSeq(OBJECT, FOLDER)
+    val values = js.Object.freeze(js.Array(OBJECT, FOLDER))
   }
 
   @js.native
@@ -323,13 +323,13 @@ package mediastoredata {
   object StorageClassEnum {
     val TEMPORAL = "TEMPORAL"
 
-    val values = IndexedSeq(TEMPORAL)
+    val values = js.Object.freeze(js.Array(TEMPORAL))
   }
 
   object UploadAvailabilityEnum {
     val STANDARD  = "STANDARD"
     val STREAMING = "STREAMING"
 
-    val values = IndexedSeq(STANDARD, STREAMING)
+    val values = js.Object.freeze(js.Array(STANDARD, STREAMING))
   }
 }
diff --git a/services/mediatailor/src/main/scala/facade/amazonaws/services/MediaTailor.scala b/services/mediatailor/src/main/scala/facade/amazonaws/services/MediaTailor.scala
index 5731c7e8f..a66c2d7eb 100644
--- a/services/mediatailor/src/main/scala/facade/amazonaws/services/MediaTailor.scala
+++ b/services/mediatailor/src/main/scala/facade/amazonaws/services/MediaTailor.scala
@@ -310,7 +310,7 @@ package mediatailor {
     val SINGLE_PERIOD = "SINGLE_PERIOD"
     val MULTI_PERIOD  = "MULTI_PERIOD"
 
-    val values = IndexedSeq(SINGLE_PERIOD, MULTI_PERIOD)
+    val values = js.Object.freeze(js.Array(SINGLE_PERIOD, MULTI_PERIOD))
   }
 
   /**
diff --git a/services/migrationhub/src/main/scala/facade/amazonaws/services/MigrationHub.scala b/services/migrationhub/src/main/scala/facade/amazonaws/services/MigrationHub.scala
index 2ac385663..779dc426a 100644
--- a/services/migrationhub/src/main/scala/facade/amazonaws/services/MigrationHub.scala
+++ b/services/migrationhub/src/main/scala/facade/amazonaws/services/MigrationHub.scala
@@ -135,7 +135,7 @@ package migrationhub {
     val IN_PROGRESS = "IN_PROGRESS"
     val COMPLETED   = "COMPLETED"
 
-    val values = IndexedSeq(NOT_STARTED, IN_PROGRESS, COMPLETED)
+    val values = js.Object.freeze(js.Array(NOT_STARTED, IN_PROGRESS, COMPLETED))
   }
 
   @js.native
@@ -943,17 +943,19 @@ package migrationhub {
     val BIOS_ID                     = "BIOS_ID"
     val MOTHERBOARD_SERIAL_NUMBER   = "MOTHERBOARD_SERIAL_NUMBER"
 
-    val values = IndexedSeq(
-      IPV4_ADDRESS,
-      IPV6_ADDRESS,
-      MAC_ADDRESS,
-      FQDN,
-      VM_MANAGER_ID,
-      VM_MANAGED_OBJECT_REFERENCE,
-      VM_NAME,
-      VM_PATH,
-      BIOS_ID,
-      MOTHERBOARD_SERIAL_NUMBER
+    val values = js.Object.freeze(
+      js.Array(
+        IPV4_ADDRESS,
+        IPV6_ADDRESS,
+        MAC_ADDRESS,
+        FQDN,
+        VM_MANAGER_ID,
+        VM_MANAGED_OBJECT_REFERENCE,
+        VM_NAME,
+        VM_PATH,
+        BIOS_ID,
+        MOTHERBOARD_SERIAL_NUMBER
+      )
     )
   }
 
@@ -979,7 +981,7 @@ package migrationhub {
     val FAILED      = "FAILED"
     val COMPLETED   = "COMPLETED"
 
-    val values = IndexedSeq(NOT_STARTED, IN_PROGRESS, FAILED, COMPLETED)
+    val values = js.Object.freeze(js.Array(NOT_STARTED, IN_PROGRESS, FAILED, COMPLETED))
   }
 
   /**
diff --git a/services/mobile/src/main/scala/facade/amazonaws/services/Mobile.scala b/services/mobile/src/main/scala/facade/amazonaws/services/Mobile.scala
index 4523924fc..c00be58a4 100644
--- a/services/mobile/src/main/scala/facade/amazonaws/services/Mobile.scala
+++ b/services/mobile/src/main/scala/facade/amazonaws/services/Mobile.scala
@@ -503,7 +503,7 @@ package mobile {
     val ANDROID    = "ANDROID"
     val JAVASCRIPT = "JAVASCRIPT"
 
-    val values = IndexedSeq(OSX, WINDOWS, LINUX, OBJC, SWIFT, ANDROID, JAVASCRIPT)
+    val values = js.Object.freeze(js.Array(OSX, WINDOWS, LINUX, OBJC, SWIFT, ANDROID, JAVASCRIPT))
   }
 
   /**
@@ -553,7 +553,7 @@ package mobile {
     val SYNCING   = "SYNCING"
     val IMPORTING = "IMPORTING"
 
-    val values = IndexedSeq(NORMAL, SYNCING, IMPORTING)
+    val values = js.Object.freeze(js.Array(NORMAL, SYNCING, IMPORTING))
   }
 
   /**
diff --git a/services/mq/src/main/scala/facade/amazonaws/services/MQ.scala b/services/mq/src/main/scala/facade/amazonaws/services/MQ.scala
index dbddc480a..b8ad384eb 100644
--- a/services/mq/src/main/scala/facade/amazonaws/services/MQ.scala
+++ b/services/mq/src/main/scala/facade/amazonaws/services/MQ.scala
@@ -223,7 +223,9 @@ package mq {
     val RUNNING              = "RUNNING"
     val REBOOT_IN_PROGRESS   = "REBOOT_IN_PROGRESS"
 
-    val values = IndexedSeq(CREATION_IN_PROGRESS, CREATION_FAILED, DELETION_IN_PROGRESS, RUNNING, REBOOT_IN_PROGRESS)
+    val values = js.Object.freeze(
+      js.Array(CREATION_IN_PROGRESS, CREATION_FAILED, DELETION_IN_PROGRESS, RUNNING, REBOOT_IN_PROGRESS)
+    )
   }
 
   /**
@@ -270,7 +272,7 @@ package mq {
     val UPDATE = "UPDATE"
     val DELETE = "DELETE"
 
-    val values = IndexedSeq(CREATE, UPDATE, DELETE)
+    val values = js.Object.freeze(js.Array(CREATE, UPDATE, DELETE))
   }
 
   /**
@@ -595,7 +597,7 @@ package mq {
     val SATURDAY  = "SATURDAY"
     val SUNDAY    = "SUNDAY"
 
-    val values = IndexedSeq(MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY, SUNDAY)
+    val values = js.Object.freeze(js.Array(MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY, SUNDAY))
   }
 
   @js.native
@@ -689,7 +691,7 @@ package mq {
     val SINGLE_INSTANCE         = "SINGLE_INSTANCE"
     val ACTIVE_STANDBY_MULTI_AZ = "ACTIVE_STANDBY_MULTI_AZ"
 
-    val values = IndexedSeq(SINGLE_INSTANCE, ACTIVE_STANDBY_MULTI_AZ)
+    val values = js.Object.freeze(js.Array(SINGLE_INSTANCE, ACTIVE_STANDBY_MULTI_AZ))
   }
 
   @js.native
@@ -1047,7 +1049,7 @@ package mq {
   object EngineTypeEnum {
     val ACTIVEMQ = "ACTIVEMQ"
 
-    val values = IndexedSeq(ACTIVEMQ)
+    val values = js.Object.freeze(js.Array(ACTIVEMQ))
   }
 
   /**
@@ -1402,7 +1404,9 @@ package mq {
     val DISALLOWED_ATTRIBUTE_REMOVED    = "DISALLOWED_ATTRIBUTE_REMOVED"
     val INVALID_ATTRIBUTE_VALUE_REMOVED = "INVALID_ATTRIBUTE_VALUE_REMOVED"
 
-    val values = IndexedSeq(DISALLOWED_ELEMENT_REMOVED, DISALLOWED_ATTRIBUTE_REMOVED, INVALID_ATTRIBUTE_VALUE_REMOVED)
+    val values = js.Object.freeze(
+      js.Array(DISALLOWED_ELEMENT_REMOVED, DISALLOWED_ATTRIBUTE_REMOVED, INVALID_ATTRIBUTE_VALUE_REMOVED)
+    )
   }
 
   /**
diff --git a/services/mturk/src/main/scala/facade/amazonaws/services/MTurk.scala b/services/mturk/src/main/scala/facade/amazonaws/services/MTurk.scala
index 4dcb02f8d..c18110a2a 100644
--- a/services/mturk/src/main/scala/facade/amazonaws/services/MTurk.scala
+++ b/services/mturk/src/main/scala/facade/amazonaws/services/MTurk.scala
@@ -346,7 +346,7 @@ package mturk {
     val Approved  = "Approved"
     val Rejected  = "Rejected"
 
-    val values = IndexedSeq(Submitted, Approved, Rejected)
+    val values = js.Object.freeze(js.Array(Submitted, Approved, Rejected))
   }
 
   @js.native
@@ -429,17 +429,19 @@ package mturk {
     val In                   = "In"
     val NotIn                = "NotIn"
 
-    val values = IndexedSeq(
-      LessThan,
-      LessThanOrEqualTo,
-      GreaterThan,
-      GreaterThanOrEqualTo,
-      EqualTo,
-      NotEqualTo,
-      Exists,
-      DoesNotExist,
-      In,
-      NotIn
+    val values = js.Object.freeze(
+      js.Array(
+        LessThan,
+        LessThanOrEqualTo,
+        GreaterThan,
+        GreaterThanOrEqualTo,
+        EqualTo,
+        NotEqualTo,
+        Exists,
+        DoesNotExist,
+        In,
+        NotIn
+      )
     )
   }
 
@@ -894,19 +896,21 @@ package mturk {
     val HITDisposed         = "HITDisposed"
     val Ping                = "Ping"
 
-    val values = IndexedSeq(
-      AssignmentAccepted,
-      AssignmentAbandoned,
-      AssignmentReturned,
-      AssignmentSubmitted,
-      AssignmentRejected,
-      AssignmentApproved,
-      HITCreated,
-      HITExpired,
-      HITReviewable,
-      HITExtended,
-      HITDisposed,
-      Ping
+    val values = js.Object.freeze(
+      js.Array(
+        AssignmentAccepted,
+        AssignmentAbandoned,
+        AssignmentReturned,
+        AssignmentSubmitted,
+        AssignmentRejected,
+        AssignmentApproved,
+        HITCreated,
+        HITExpired,
+        HITReviewable,
+        HITExtended,
+        HITDisposed,
+        Ping
+      )
     )
   }
 
@@ -1196,7 +1200,7 @@ package mturk {
     val PreviewAndAccept         = "PreviewAndAccept"
     val DiscoverPreviewAndAccept = "DiscoverPreviewAndAccept"
 
-    val values = IndexedSeq(Accept, PreviewAndAccept, DiscoverPreviewAndAccept)
+    val values = js.Object.freeze(js.Array(Accept, PreviewAndAccept, DiscoverPreviewAndAccept))
   }
 
   /**
@@ -1228,7 +1232,7 @@ package mturk {
     val ReviewedAppropriate   = "ReviewedAppropriate"
     val ReviewedInappropriate = "ReviewedInappropriate"
 
-    val values = IndexedSeq(NotReviewed, MarkedForReview, ReviewedAppropriate, ReviewedInappropriate)
+    val values = js.Object.freeze(js.Array(NotReviewed, MarkedForReview, ReviewedAppropriate, ReviewedInappropriate))
   }
 
   object HITStatusEnum {
@@ -1238,7 +1242,7 @@ package mturk {
     val Reviewing    = "Reviewing"
     val Disposed     = "Disposed"
 
-    val values = IndexedSeq(Assignable, Unassignable, Reviewable, Reviewing, Disposed)
+    val values = js.Object.freeze(js.Array(Assignable, Unassignable, Reviewable, Reviewing, Disposed))
   }
 
   @js.native
@@ -1758,14 +1762,14 @@ package mturk {
     val SQS   = "SQS"
     val SNS   = "SNS"
 
-    val values = IndexedSeq(Email, SQS, SNS)
+    val values = js.Object.freeze(js.Array(Email, SQS, SNS))
   }
 
   object NotifyWorkersFailureCodeEnum {
     val SoftFailure = "SoftFailure"
     val HardFailure = "HardFailure"
 
-    val values = IndexedSeq(SoftFailure, HardFailure)
+    val values = js.Object.freeze(js.Array(SoftFailure, HardFailure))
   }
 
   /**
@@ -1982,7 +1986,7 @@ package mturk {
     val Granted = "Granted"
     val Revoked = "Revoked"
 
-    val values = IndexedSeq(Granted, Revoked)
+    val values = js.Object.freeze(js.Array(Granted, Revoked))
   }
 
   /**
@@ -2043,7 +2047,7 @@ package mturk {
     val Active   = "Active"
     val Inactive = "Inactive"
 
-    val values = IndexedSeq(Active, Inactive)
+    val values = js.Object.freeze(js.Array(Active, Inactive))
   }
 
   @js.native
@@ -2164,7 +2168,7 @@ package mturk {
     val Failed    = "Failed"
     val Cancelled = "Cancelled"
 
-    val values = IndexedSeq(Intended, Succeeded, Failed, Cancelled)
+    val values = js.Object.freeze(js.Array(Intended, Succeeded, Failed, Cancelled))
   }
 
   /**
@@ -2194,7 +2198,7 @@ package mturk {
     val Assignment = "Assignment"
     val HIT        = "HIT"
 
-    val values = IndexedSeq(Assignment, HIT)
+    val values = js.Object.freeze(js.Array(Assignment, HIT))
   }
 
   /**
@@ -2255,7 +2259,7 @@ package mturk {
     val Reviewable = "Reviewable"
     val Reviewing  = "Reviewing"
 
-    val values = IndexedSeq(Reviewable, Reviewing)
+    val values = js.Object.freeze(js.Array(Reviewable, Reviewing))
   }
 
   @js.native
diff --git a/services/neptune/src/main/scala/facade/amazonaws/services/Neptune.scala b/services/neptune/src/main/scala/facade/amazonaws/services/Neptune.scala
index 4bf61f522..06c6d5770 100644
--- a/services/neptune/src/main/scala/facade/amazonaws/services/Neptune.scala
+++ b/services/neptune/src/main/scala/facade/amazonaws/services/Neptune.scala
@@ -396,7 +396,7 @@ package neptune {
     val immediate        = "immediate"
     val `pending-reboot` = "pending-reboot"
 
-    val values = IndexedSeq(immediate, `pending-reboot`)
+    val values = js.Object.freeze(js.Array(immediate, `pending-reboot`))
   }
 
   @js.native
@@ -4138,13 +4138,15 @@ package neptune {
     val `db-cluster`          = "db-cluster"
     val `db-cluster-snapshot` = "db-cluster-snapshot"
 
-    val values = IndexedSeq(
-      `db-instance`,
-      `db-parameter-group`,
-      `db-security-group`,
-      `db-snapshot`,
-      `db-cluster`,
-      `db-cluster-snapshot`
+    val values = js.Object.freeze(
+      js.Array(
+        `db-instance`,
+        `db-parameter-group`,
+        `db-security-group`,
+        `db-snapshot`,
+        `db-cluster`,
+        `db-cluster-snapshot`
+      )
     )
   }
 
diff --git a/services/opsworks/src/main/scala/facade/amazonaws/services/OpsWorks.scala b/services/opsworks/src/main/scala/facade/amazonaws/services/OpsWorks.scala
index 7abb2429a..67f92d4e6 100644
--- a/services/opsworks/src/main/scala/facade/amazonaws/services/OpsWorks.scala
+++ b/services/opsworks/src/main/scala/facade/amazonaws/services/OpsWorks.scala
@@ -389,7 +389,7 @@ package opsworks {
     val AutoBundleOnDeploy  = "AutoBundleOnDeploy"
     val AwsFlowRubySettings = "AwsFlowRubySettings"
 
-    val values = IndexedSeq(DocumentRoot, RailsEnv, AutoBundleOnDeploy, AwsFlowRubySettings)
+    val values = js.Object.freeze(js.Array(DocumentRoot, RailsEnv, AutoBundleOnDeploy, AwsFlowRubySettings))
   }
 
   object AppTypeEnum {
@@ -401,14 +401,14 @@ package opsworks {
     val static          = "static"
     val other           = "other"
 
-    val values = IndexedSeq(`aws-flow-ruby`, java, rails, php, nodejs, static, other)
+    val values = js.Object.freeze(js.Array(`aws-flow-ruby`, java, rails, php, nodejs, static, other))
   }
 
   object ArchitectureEnum {
     val x86_64 = "x86_64"
     val i386   = "i386"
 
-    val values = IndexedSeq(x86_64, i386)
+    val values = js.Object.freeze(js.Array(x86_64, i386))
   }
 
   @js.native
@@ -531,7 +531,7 @@ package opsworks {
     val load  = "load"
     val timer = "timer"
 
-    val values = IndexedSeq(load, timer)
+    val values = js.Object.freeze(js.Array(load, timer))
   }
 
   /**
@@ -798,99 +798,101 @@ package opsworks {
     val utf_8           = "utf_8"
     val utf_8_sig       = "utf_8_sig"
 
-    val values = IndexedSeq(
-      ascii,
-      big5,
-      big5hkscs,
-      cp037,
-      cp424,
-      cp437,
-      cp500,
-      cp720,
-      cp737,
-      cp775,
-      cp850,
-      cp852,
-      cp855,
-      cp856,
-      cp857,
-      cp858,
-      cp860,
-      cp861,
-      cp862,
-      cp863,
-      cp864,
-      cp865,
-      cp866,
-      cp869,
-      cp874,
-      cp875,
-      cp932,
-      cp949,
-      cp950,
-      cp1006,
-      cp1026,
-      cp1140,
-      cp1250,
-      cp1251,
-      cp1252,
-      cp1253,
-      cp1254,
-      cp1255,
-      cp1256,
-      cp1257,
-      cp1258,
-      euc_jp,
-      euc_jis_2004,
-      euc_jisx0213,
-      euc_kr,
-      gb2312,
-      gbk,
-      gb18030,
-      hz,
-      iso2022_jp,
-      iso2022_jp_1,
-      iso2022_jp_2,
-      iso2022_jp_2004,
-      iso2022_jp_3,
-      iso2022_jp_ext,
-      iso2022_kr,
-      latin_1,
-      iso8859_2,
-      iso8859_3,
-      iso8859_4,
-      iso8859_5,
-      iso8859_6,
-      iso8859_7,
-      iso8859_8,
-      iso8859_9,
-      iso8859_10,
-      iso8859_13,
-      iso8859_14,
-      iso8859_15,
-      iso8859_16,
-      johab,
-      koi8_r,
-      koi8_u,
-      mac_cyrillic,
-      mac_greek,
-      mac_iceland,
-      mac_latin2,
-      mac_roman,
-      mac_turkish,
-      ptcp154,
-      shift_jis,
-      shift_jis_2004,
-      shift_jisx0213,
-      utf_32,
-      utf_32_be,
-      utf_32_le,
-      utf_16,
-      utf_16_be,
-      utf_16_le,
-      utf_7,
-      utf_8,
-      utf_8_sig
+    val values = js.Object.freeze(
+      js.Array(
+        ascii,
+        big5,
+        big5hkscs,
+        cp037,
+        cp424,
+        cp437,
+        cp500,
+        cp720,
+        cp737,
+        cp775,
+        cp850,
+        cp852,
+        cp855,
+        cp856,
+        cp857,
+        cp858,
+        cp860,
+        cp861,
+        cp862,
+        cp863,
+        cp864,
+        cp865,
+        cp866,
+        cp869,
+        cp874,
+        cp875,
+        cp932,
+        cp949,
+        cp950,
+        cp1006,
+        cp1026,
+        cp1140,
+        cp1250,
+        cp1251,
+        cp1252,
+        cp1253,
+        cp1254,
+        cp1255,
+        cp1256,
+        cp1257,
+        cp1258,
+        euc_jp,
+        euc_jis_2004,
+        euc_jisx0213,
+        euc_kr,
+        gb2312,
+        gbk,
+        gb18030,
+        hz,
+        iso2022_jp,
+        iso2022_jp_1,
+        iso2022_jp_2,
+        iso2022_jp_2004,
+        iso2022_jp_3,
+        iso2022_jp_ext,
+        iso2022_kr,
+        latin_1,
+        iso8859_2,
+        iso8859_3,
+        iso8859_4,
+        iso8859_5,
+        iso8859_6,
+        iso8859_7,
+        iso8859_8,
+        iso8859_9,
+        iso8859_10,
+        iso8859_13,
+        iso8859_14,
+        iso8859_15,
+        iso8859_16,
+        johab,
+        koi8_r,
+        koi8_u,
+        mac_cyrillic,
+        mac_greek,
+        mac_iceland,
+        mac_latin2,
+        mac_roman,
+        mac_turkish,
+        ptcp154,
+        shift_jis,
+        shift_jis_2004,
+        shift_jisx0213,
+        utf_32,
+        utf_32_be,
+        utf_32_le,
+        utf_16,
+        utf_16_be,
+        utf_16_le,
+        utf_7,
+        utf_8,
+        utf_8_sig
+      )
     )
   }
 
@@ -901,7 +903,7 @@ package opsworks {
     val start_of_file = "start_of_file"
     val end_of_file   = "end_of_file"
 
-    val values = IndexedSeq(start_of_file, end_of_file)
+    val values = js.Object.freeze(js.Array(start_of_file, end_of_file))
   }
 
   /**
@@ -959,7 +961,7 @@ package opsworks {
     val LOCAL = "LOCAL"
     val UTC   = "UTC"
 
-    val values = IndexedSeq(LOCAL, UTC)
+    val values = js.Object.freeze(js.Array(LOCAL, UTC))
   }
 
   /**
@@ -1636,19 +1638,21 @@ package opsworks {
     val restart                 = "restart"
     val undeploy                = "undeploy"
 
-    val values = IndexedSeq(
-      install_dependencies,
-      update_dependencies,
-      update_custom_cookbooks,
-      execute_recipes,
-      configure,
-      setup,
-      deploy,
-      rollback,
-      start,
-      stop,
-      restart,
-      undeploy
+    val values = js.Object.freeze(
+      js.Array(
+        install_dependencies,
+        update_dependencies,
+        update_custom_cookbooks,
+        execute_recipes,
+        configure,
+        setup,
+        deploy,
+        rollback,
+        start,
+        stop,
+        restart,
+        undeploy
+      )
     )
   }
 
@@ -3138,32 +3142,34 @@ package opsworks {
     val JavaAppServer               = "JavaAppServer"
     val JavaAppServerVersion        = "JavaAppServerVersion"
 
-    val values = IndexedSeq(
-      EcsClusterArn,
-      EnableHaproxyStats,
-      HaproxyStatsUrl,
-      HaproxyStatsUser,
-      HaproxyStatsPassword,
-      HaproxyHealthCheckUrl,
-      HaproxyHealthCheckMethod,
-      MysqlRootPassword,
-      MysqlRootPasswordUbiquitous,
-      GangliaUrl,
-      GangliaUser,
-      GangliaPassword,
-      MemcachedMemory,
-      NodejsVersion,
-      RubyVersion,
-      RubygemsVersion,
-      ManageBundler,
-      BundlerVersion,
-      RailsStack,
-      PassengerVersion,
-      Jvm,
-      JvmVersion,
-      JvmOptions,
-      JavaAppServer,
-      JavaAppServerVersion
+    val values = js.Object.freeze(
+      js.Array(
+        EcsClusterArn,
+        EnableHaproxyStats,
+        HaproxyStatsUrl,
+        HaproxyStatsUser,
+        HaproxyStatsPassword,
+        HaproxyHealthCheckUrl,
+        HaproxyHealthCheckMethod,
+        MysqlRootPassword,
+        MysqlRootPasswordUbiquitous,
+        GangliaUrl,
+        GangliaUser,
+        GangliaPassword,
+        MemcachedMemory,
+        NodejsVersion,
+        RubyVersion,
+        RubygemsVersion,
+        ManageBundler,
+        BundlerVersion,
+        RailsStack,
+        PassengerVersion,
+        Jvm,
+        JvmVersion,
+        JvmOptions,
+        JavaAppServer,
+        JavaAppServerVersion
+      )
     )
   }
 
@@ -3181,19 +3187,21 @@ package opsworks {
     val `monitoring-master` = "monitoring-master"
     val custom              = "custom"
 
-    val values = IndexedSeq(
-      `aws-flow-ruby`,
-      `ecs-cluster`,
-      `java-app`,
-      lb,
-      web,
-      `php-app`,
-      `rails-app`,
-      `nodejs-app`,
-      memcached,
-      `db-master`,
-      `monitoring-master`,
-      custom
+    val values = js.Object.freeze(
+      js.Array(
+        `aws-flow-ruby`,
+        `ecs-cluster`,
+        `java-app`,
+        lb,
+        web,
+        `php-app`,
+        `rails-app`,
+        `nodejs-app`,
+        memcached,
+        `db-master`,
+        `monitoring-master`,
+        custom
+      )
     )
   }
 
@@ -3738,7 +3746,7 @@ package opsworks {
     val ebs              = "ebs"
     val `instance-store` = "instance-store"
 
-    val values = IndexedSeq(ebs, `instance-store`)
+    val values = js.Object.freeze(js.Array(ebs, `instance-store`))
   }
 
   /**
@@ -3938,7 +3946,7 @@ package opsworks {
     val archive = "archive"
     val s3      = "s3"
 
-    val values = IndexedSeq(git, svn, archive, s3)
+    val values = js.Object.freeze(js.Array(git, svn, archive, s3))
   }
 
   /**
@@ -4051,7 +4059,7 @@ package opsworks {
   object StackAttributesKeysEnum {
     val Color = "Color"
 
-    val values = IndexedSeq(Color)
+    val values = js.Object.freeze(js.Array(Color))
   }
 
   /**
@@ -4672,7 +4680,7 @@ package opsworks {
     val paravirtual = "paravirtual"
     val hvm         = "hvm"
 
-    val values = IndexedSeq(paravirtual, hvm)
+    val values = js.Object.freeze(js.Array(paravirtual, hvm))
   }
 
   /**
@@ -4775,7 +4783,7 @@ package opsworks {
     val io1      = "io1"
     val standard = "standard"
 
-    val values = IndexedSeq(gp2, io1, standard)
+    val values = js.Object.freeze(js.Array(gp2, io1, standard))
   }
 
   /**
diff --git a/services/opsworkscm/src/main/scala/facade/amazonaws/services/OpsWorksCM.scala b/services/opsworkscm/src/main/scala/facade/amazonaws/services/OpsWorksCM.scala
index ea6d51afc..c0dd9da9a 100644
--- a/services/opsworkscm/src/main/scala/facade/amazonaws/services/OpsWorksCM.scala
+++ b/services/opsworkscm/src/main/scala/facade/amazonaws/services/OpsWorksCM.scala
@@ -264,14 +264,14 @@ package opsworkscm {
     val FAILED      = "FAILED"
     val DELETING    = "DELETING"
 
-    val values = IndexedSeq(IN_PROGRESS, OK, FAILED, DELETING)
+    val values = js.Object.freeze(js.Array(IN_PROGRESS, OK, FAILED, DELETING))
   }
 
   object BackupTypeEnum {
     val AUTOMATED = "AUTOMATED"
     val MANUAL    = "MANUAL"
 
-    val values = IndexedSeq(AUTOMATED, MANUAL)
+    val values = js.Object.freeze(js.Array(AUTOMATED, MANUAL))
   }
 
   @js.native
@@ -738,7 +738,7 @@ package opsworkscm {
     val SUCCESS = "SUCCESS"
     val FAILED  = "FAILED"
 
-    val values = IndexedSeq(SUCCESS, FAILED)
+    val values = js.Object.freeze(js.Array(SUCCESS, FAILED))
   }
 
   /**
@@ -752,7 +752,7 @@ package opsworkscm {
     val FAILED      = "FAILED"
     val IN_PROGRESS = "IN_PROGRESS"
 
-    val values = IndexedSeq(SUCCESS, FAILED, IN_PROGRESS)
+    val values = js.Object.freeze(js.Array(SUCCESS, FAILED, IN_PROGRESS))
   }
 
   @js.native
@@ -919,20 +919,22 @@ package opsworkscm {
     val UNHEALTHY         = "UNHEALTHY"
     val TERMINATED        = "TERMINATED"
 
-    val values = IndexedSeq(
-      BACKING_UP,
-      CONNECTION_LOST,
-      CREATING,
-      DELETING,
-      MODIFYING,
-      FAILED,
-      HEALTHY,
-      RUNNING,
-      RESTORING,
-      SETUP,
-      UNDER_MAINTENANCE,
-      UNHEALTHY,
-      TERMINATED
+    val values = js.Object.freeze(
+      js.Array(
+        BACKING_UP,
+        CONNECTION_LOST,
+        CREATING,
+        DELETING,
+        MODIFYING,
+        FAILED,
+        HEALTHY,
+        RUNNING,
+        RESTORING,
+        SETUP,
+        UNDER_MAINTENANCE,
+        UNHEALTHY,
+        TERMINATED
+      )
     )
   }
 
diff --git a/services/organizations/src/main/scala/facade/amazonaws/services/Organizations.scala b/services/organizations/src/main/scala/facade/amazonaws/services/Organizations.scala
index aa3b993ca..3621213ec 100644
--- a/services/organizations/src/main/scala/facade/amazonaws/services/Organizations.scala
+++ b/services/organizations/src/main/scala/facade/amazonaws/services/Organizations.scala
@@ -323,14 +323,14 @@ package organizations {
     val INVITED = "INVITED"
     val CREATED = "CREATED"
 
-    val values = IndexedSeq(INVITED, CREATED)
+    val values = js.Object.freeze(js.Array(INVITED, CREATED))
   }
 
   object AccountStatusEnum {
     val ACTIVE    = "ACTIVE"
     val SUSPENDED = "SUSPENDED"
 
-    val values = IndexedSeq(ACTIVE, SUSPENDED)
+    val values = js.Object.freeze(js.Array(ACTIVE, SUSPENDED))
   }
 
   object ActionTypeEnum {
@@ -339,7 +339,9 @@ package organizations {
     val APPROVE_ALL_FEATURES                  = "APPROVE_ALL_FEATURES"
     val ADD_ORGANIZATIONS_SERVICE_LINKED_ROLE = "ADD_ORGANIZATIONS_SERVICE_LINKED_ROLE"
 
-    val values = IndexedSeq(INVITE, ENABLE_ALL_FEATURES, APPROVE_ALL_FEATURES, ADD_ORGANIZATIONS_SERVICE_LINKED_ROLE)
+    val values = js.Object.freeze(
+      js.Array(INVITE, ENABLE_ALL_FEATURES, APPROVE_ALL_FEATURES, ADD_ORGANIZATIONS_SERVICE_LINKED_ROLE)
+    )
   }
 
   @js.native
@@ -419,7 +421,7 @@ package organizations {
     val ACCOUNT             = "ACCOUNT"
     val ORGANIZATIONAL_UNIT = "ORGANIZATIONAL_UNIT"
 
-    val values = IndexedSeq(ACCOUNT, ORGANIZATIONAL_UNIT)
+    val values = js.Object.freeze(js.Array(ACCOUNT, ORGANIZATIONAL_UNIT))
   }
 
   object CreateAccountFailureReasonEnum {
@@ -430,13 +432,15 @@ package organizations {
     val CONCURRENT_ACCOUNT_MODIFICATION = "CONCURRENT_ACCOUNT_MODIFICATION"
     val INTERNAL_FAILURE                = "INTERNAL_FAILURE"
 
-    val values = IndexedSeq(
-      ACCOUNT_LIMIT_EXCEEDED,
-      EMAIL_ALREADY_EXISTS,
-      INVALID_ADDRESS,
-      INVALID_EMAIL,
-      CONCURRENT_ACCOUNT_MODIFICATION,
-      INTERNAL_FAILURE
+    val values = js.Object.freeze(
+      js.Array(
+        ACCOUNT_LIMIT_EXCEEDED,
+        EMAIL_ALREADY_EXISTS,
+        INVALID_ADDRESS,
+        INVALID_EMAIL,
+        CONCURRENT_ACCOUNT_MODIFICATION,
+        INTERNAL_FAILURE
+      )
     )
   }
 
@@ -486,7 +490,7 @@ package organizations {
     val SUCCEEDED   = "SUCCEEDED"
     val FAILED      = "FAILED"
 
-    val values = IndexedSeq(IN_PROGRESS, SUCCEEDED, FAILED)
+    val values = js.Object.freeze(js.Array(IN_PROGRESS, SUCCEEDED, FAILED))
   }
 
   /**
@@ -1177,7 +1181,7 @@ package organizations {
     val ORGANIZATION = "ORGANIZATION"
     val EMAIL        = "EMAIL"
 
-    val values = IndexedSeq(ACCOUNT, ORGANIZATION, EMAIL)
+    val values = js.Object.freeze(js.Array(ACCOUNT, ORGANIZATION, EMAIL))
   }
 
   /**
@@ -1214,15 +1218,17 @@ package organizations {
     val NOTES                    = "NOTES"
     val PARENT_HANDSHAKE         = "PARENT_HANDSHAKE"
 
-    val values = IndexedSeq(
-      ACCOUNT,
-      ORGANIZATION,
-      ORGANIZATION_FEATURE_SET,
-      EMAIL,
-      MASTER_EMAIL,
-      MASTER_NAME,
-      NOTES,
-      PARENT_HANDSHAKE
+    val values = js.Object.freeze(
+      js.Array(
+        ACCOUNT,
+        ORGANIZATION,
+        ORGANIZATION_FEATURE_SET,
+        EMAIL,
+        MASTER_EMAIL,
+        MASTER_NAME,
+        NOTES,
+        PARENT_HANDSHAKE
+      )
     )
   }
 
@@ -1234,14 +1240,14 @@ package organizations {
     val DECLINED  = "DECLINED"
     val EXPIRED   = "EXPIRED"
 
-    val values = IndexedSeq(REQUESTED, OPEN, CANCELED, ACCEPTED, DECLINED, EXPIRED)
+    val values = js.Object.freeze(js.Array(REQUESTED, OPEN, CANCELED, ACCEPTED, DECLINED, EXPIRED))
   }
 
   object IAMUserAccessToBillingEnum {
     val ALLOW = "ALLOW"
     val DENY  = "DENY"
 
-    val values = IndexedSeq(ALLOW, DENY)
+    val values = js.Object.freeze(js.Array(ALLOW, DENY))
   }
 
   @js.native
@@ -1898,7 +1904,7 @@ package organizations {
     val ALL                  = "ALL"
     val CONSOLIDATED_BILLING = "CONSOLIDATED_BILLING"
 
-    val values = IndexedSeq(ALL, CONSOLIDATED_BILLING)
+    val values = js.Object.freeze(js.Array(ALL, CONSOLIDATED_BILLING))
   }
 
   /**
@@ -1950,7 +1956,7 @@ package organizations {
     val ROOT                = "ROOT"
     val ORGANIZATIONAL_UNIT = "ORGANIZATIONAL_UNIT"
 
-    val values = IndexedSeq(ROOT, ORGANIZATIONAL_UNIT)
+    val values = js.Object.freeze(js.Array(ROOT, ORGANIZATIONAL_UNIT))
   }
 
   /**
@@ -2037,7 +2043,7 @@ package organizations {
   object PolicyTypeEnum {
     val SERVICE_CONTROL_POLICY = "SERVICE_CONTROL_POLICY"
 
-    val values = IndexedSeq(SERVICE_CONTROL_POLICY)
+    val values = js.Object.freeze(js.Array(SERVICE_CONTROL_POLICY))
   }
 
   object PolicyTypeStatusEnum {
@@ -2045,7 +2051,7 @@ package organizations {
     val PENDING_ENABLE  = "PENDING_ENABLE"
     val PENDING_DISABLE = "PENDING_DISABLE"
 
-    val values = IndexedSeq(ENABLED, PENDING_ENABLE, PENDING_DISABLE)
+    val values = js.Object.freeze(js.Array(ENABLED, PENDING_ENABLE, PENDING_DISABLE))
   }
 
   /**
@@ -2161,7 +2167,7 @@ package organizations {
     val ORGANIZATIONAL_UNIT = "ORGANIZATIONAL_UNIT"
     val ROOT                = "ROOT"
 
-    val values = IndexedSeq(ACCOUNT, ORGANIZATIONAL_UNIT, ROOT)
+    val values = js.Object.freeze(js.Array(ACCOUNT, ORGANIZATIONAL_UNIT, ROOT))
   }
 
   @js.native
diff --git a/services/personalize/src/main/scala/facade/amazonaws/services/Personalize.scala b/services/personalize/src/main/scala/facade/amazonaws/services/Personalize.scala
index 387482bc6..77c1ae3bf 100644
--- a/services/personalize/src/main/scala/facade/amazonaws/services/Personalize.scala
+++ b/services/personalize/src/main/scala/facade/amazonaws/services/Personalize.scala
@@ -2276,7 +2276,7 @@ package personalize {
   object RecipeProviderEnum {
     val SERVICE = "SERVICE"
 
-    val values = IndexedSeq(SERVICE)
+    val values = js.Object.freeze(js.Array(SERVICE))
   }
 
   /**
diff --git a/services/pi/src/main/scala/facade/amazonaws/services/PI.scala b/services/pi/src/main/scala/facade/amazonaws/services/PI.scala
index 27abc4f5e..3ba278645 100644
--- a/services/pi/src/main/scala/facade/amazonaws/services/PI.scala
+++ b/services/pi/src/main/scala/facade/amazonaws/services/PI.scala
@@ -370,6 +370,6 @@ package pi {
   object ServiceTypeEnum {
     val RDS = "RDS"
 
-    val values = IndexedSeq(RDS)
+    val values = js.Object.freeze(js.Array(RDS))
   }
 }
diff --git a/services/pinpoint/src/main/scala/facade/amazonaws/services/Pinpoint.scala b/services/pinpoint/src/main/scala/facade/amazonaws/services/Pinpoint.scala
index 33c183837..6c0e9a7a9 100644
--- a/services/pinpoint/src/main/scala/facade/amazonaws/services/Pinpoint.scala
+++ b/services/pinpoint/src/main/scala/facade/amazonaws/services/Pinpoint.scala
@@ -910,7 +910,7 @@ package pinpoint {
     val DEEP_LINK = "DEEP_LINK"
     val URL       = "URL"
 
-    val values = IndexedSeq(OPEN_APP, DEEP_LINK, URL)
+    val values = js.Object.freeze(js.Array(OPEN_APP, DEEP_LINK, URL))
   }
 
   /**
@@ -1169,7 +1169,7 @@ package pinpoint {
     val INCLUSIVE = "INCLUSIVE"
     val EXCLUSIVE = "EXCLUSIVE"
 
-    val values = IndexedSeq(INCLUSIVE, EXCLUSIVE)
+    val values = js.Object.freeze(js.Array(INCLUSIVE, EXCLUSIVE))
   }
 
   /**
@@ -1625,7 +1625,7 @@ package pinpoint {
     val PAUSED           = "PAUSED"
     val DELETED          = "DELETED"
 
-    val values = IndexedSeq(SCHEDULED, EXECUTING, PENDING_NEXT_RUN, COMPLETED, PAUSED, DELETED)
+    val values = js.Object.freeze(js.Array(SCHEDULED, EXECUTING, PENDING_NEXT_RUN, COMPLETED, PAUSED, DELETED))
   }
 
   /**
@@ -1706,8 +1706,9 @@ package pinpoint {
     val BAIDU             = "BAIDU"
     val CUSTOM            = "CUSTOM"
 
-    val values =
-      IndexedSeq(GCM, APNS, APNS_SANDBOX, APNS_VOIP, APNS_VOIP_SANDBOX, ADM, SMS, VOICE, EMAIL, BAIDU, CUSTOM)
+    val values = js.Object.freeze(
+      js.Array(GCM, APNS, APNS_SANDBOX, APNS_VOIP, APNS_VOIP_SANDBOX, ADM, SMS, VOICE, EMAIL, BAIDU, CUSTOM)
+    )
   }
 
   /**
@@ -2557,15 +2558,16 @@ package pinpoint {
     val OPT_OUT           = "OPT_OUT"
     val DUPLICATE         = "DUPLICATE"
 
-    val values =
-      IndexedSeq(SUCCESSFUL, THROTTLED, TEMPORARY_FAILURE, PERMANENT_FAILURE, UNKNOWN_FAILURE, OPT_OUT, DUPLICATE)
+    val values = js.Object.freeze(
+      js.Array(SUCCESSFUL, THROTTLED, TEMPORARY_FAILURE, PERMANENT_FAILURE, UNKNOWN_FAILURE, OPT_OUT, DUPLICATE)
+    )
   }
 
   object DimensionTypeEnum {
     val INCLUSIVE = "INCLUSIVE"
     val EXCLUSIVE = "EXCLUSIVE"
 
-    val values = IndexedSeq(INCLUSIVE, EXCLUSIVE)
+    val values = js.Object.freeze(js.Array(INCLUSIVE, EXCLUSIVE))
   }
 
   /**
@@ -2618,7 +2620,7 @@ package pinpoint {
     val DAY_14 = "DAY_14"
     val DAY_30 = "DAY_30"
 
-    val values = IndexedSeq(HR_24, DAY_7, DAY_14, DAY_30)
+    val values = js.Object.freeze(js.Array(HR_24, DAY_7, DAY_14, DAY_30))
   }
 
   /**
@@ -3458,14 +3460,14 @@ package pinpoint {
     val SYSTEM   = "SYSTEM"
     val ENDPOINT = "ENDPOINT"
 
-    val values = IndexedSeq(SYSTEM, ENDPOINT)
+    val values = js.Object.freeze(js.Array(SYSTEM, ENDPOINT))
   }
 
   object FormatEnum {
     val CSV  = "CSV"
     val JSON = "JSON"
 
-    val values = IndexedSeq(CSV, JSON)
+    val values = js.Object.freeze(js.Array(CSV, JSON))
   }
 
   object FrequencyEnum {
@@ -3476,7 +3478,7 @@ package pinpoint {
     val MONTHLY = "MONTHLY"
     val EVENT   = "EVENT"
 
-    val values = IndexedSeq(ONCE, HOURLY, DAILY, WEEKLY, MONTHLY, EVENT)
+    val values = js.Object.freeze(js.Array(ONCE, HOURLY, DAILY, WEEKLY, MONTHLY, EVENT))
   }
 
   /**
@@ -5119,7 +5121,7 @@ package pinpoint {
     val ANY  = "ANY"
     val NONE = "NONE"
 
-    val values = IndexedSeq(ALL, ANY, NONE)
+    val values = js.Object.freeze(js.Array(ALL, ANY, NONE))
   }
 
   /**
@@ -5152,7 +5154,7 @@ package pinpoint {
     val FAILING      = "FAILING"
     val FAILED       = "FAILED"
 
-    val values = IndexedSeq(CREATED, INITIALIZING, PROCESSING, COMPLETING, COMPLETED, FAILING, FAILED)
+    val values = js.Object.freeze(js.Array(CREATED, INITIALIZING, PROCESSING, COMPLETING, COMPLETED, FAILING, FAILED))
   }
 
   @js.native
@@ -5394,7 +5396,7 @@ package pinpoint {
     val TRANSACTIONAL = "TRANSACTIONAL"
     val PROMOTIONAL   = "PROMOTIONAL"
 
-    val values = IndexedSeq(TRANSACTIONAL, PROMOTIONAL)
+    val values = js.Object.freeze(js.Array(TRANSACTIONAL, PROMOTIONAL))
   }
 
   /**
@@ -5424,7 +5426,7 @@ package pinpoint {
     val DELIVERY = "DELIVERY"
     val FILTER   = "FILTER"
 
-    val values = IndexedSeq(DELIVERY, FILTER)
+    val values = js.Object.freeze(js.Array(DELIVERY, FILTER))
   }
 
   /**
@@ -5727,7 +5729,7 @@ package pinpoint {
     val ACTIVE   = "ACTIVE"
     val INACTIVE = "INACTIVE"
 
-    val values = IndexedSeq(ACTIVE, INACTIVE)
+    val values = js.Object.freeze(js.Array(ACTIVE, INACTIVE))
   }
 
   @js.native
@@ -6245,7 +6247,7 @@ package pinpoint {
     val DIMENSIONAL = "DIMENSIONAL"
     val IMPORT      = "IMPORT"
 
-    val values = IndexedSeq(DIMENSIONAL, IMPORT)
+    val values = js.Object.freeze(js.Array(DIMENSIONAL, IMPORT))
   }
 
   /**
@@ -6502,7 +6504,7 @@ package pinpoint {
     val ANY  = "ANY"
     val NONE = "NONE"
 
-    val values = IndexedSeq(ALL, ANY, NONE)
+    val values = js.Object.freeze(js.Array(ALL, ANY, NONE))
   }
 
   @js.native
@@ -6588,7 +6590,7 @@ package pinpoint {
     val ANY  = "ANY"
     val NONE = "NONE"
 
-    val values = IndexedSeq(ALL, ANY, NONE)
+    val values = js.Object.freeze(js.Array(ALL, ANY, NONE))
   }
 
   @js.native
diff --git a/services/pinpointemail/src/main/scala/facade/amazonaws/services/PinpointEmail.scala b/services/pinpointemail/src/main/scala/facade/amazonaws/services/PinpointEmail.scala
index c339ac3ba..31f473364 100644
--- a/services/pinpointemail/src/main/scala/facade/amazonaws/services/PinpointEmail.scala
+++ b/services/pinpointemail/src/main/scala/facade/amazonaws/services/PinpointEmail.scala
@@ -320,7 +320,7 @@ package pinpointemail {
     val USE_DEFAULT_VALUE = "USE_DEFAULT_VALUE"
     val REJECT_MESSAGE    = "REJECT_MESSAGE"
 
-    val values = IndexedSeq(USE_DEFAULT_VALUE, REJECT_MESSAGE)
+    val values = js.Object.freeze(js.Array(USE_DEFAULT_VALUE, REJECT_MESSAGE))
   }
 
   /**
@@ -871,7 +871,7 @@ package pinpointemail {
     val PENDING_EXPIRATION = "PENDING_EXPIRATION"
     val DISABLED           = "DISABLED"
 
-    val values = IndexedSeq(ACTIVE, PENDING_EXPIRATION, DISABLED)
+    val values = js.Object.freeze(js.Array(ACTIVE, PENDING_EXPIRATION, DISABLED))
   }
 
   /**
@@ -914,7 +914,7 @@ package pinpointemail {
     val IN_PROGRESS = "IN_PROGRESS"
     val COMPLETED   = "COMPLETED"
 
-    val values = IndexedSeq(IN_PROGRESS, COMPLETED)
+    val values = js.Object.freeze(js.Array(IN_PROGRESS, COMPLETED))
   }
 
   /**
@@ -970,7 +970,7 @@ package pinpointemail {
     val EMAIL_HEADER = "EMAIL_HEADER"
     val LINK_TAG     = "LINK_TAG"
 
-    val values = IndexedSeq(MESSAGE_TAG, EMAIL_HEADER, LINK_TAG)
+    val values = js.Object.freeze(js.Array(MESSAGE_TAG, EMAIL_HEADER, LINK_TAG))
   }
 
   /**
@@ -1012,7 +1012,7 @@ package pinpointemail {
     val TEMPORARY_FAILURE = "TEMPORARY_FAILURE"
     val NOT_STARTED       = "NOT_STARTED"
 
-    val values = IndexedSeq(PENDING, SUCCESS, FAILED, TEMPORARY_FAILURE, NOT_STARTED)
+    val values = js.Object.freeze(js.Array(PENDING, SUCCESS, FAILED, TEMPORARY_FAILURE, NOT_STARTED))
   }
 
   /**
@@ -1233,7 +1233,7 @@ package pinpointemail {
     val CLICK             = "CLICK"
     val RENDERING_FAILURE = "RENDERING_FAILURE"
 
-    val values = IndexedSeq(SEND, REJECT, BOUNCE, COMPLAINT, DELIVERY, OPEN, CLICK, RENDERING_FAILURE)
+    val values = js.Object.freeze(js.Array(SEND, REJECT, BOUNCE, COMPLAINT, DELIVERY, OPEN, CLICK, RENDERING_FAILURE))
   }
 
   /**
@@ -1775,7 +1775,7 @@ package pinpointemail {
     val DOMAIN         = "DOMAIN"
     val MANAGED_DOMAIN = "MANAGED_DOMAIN"
 
-    val values = IndexedSeq(EMAIL_ADDRESS, DOMAIN, MANAGED_DOMAIN)
+    val values = js.Object.freeze(js.Array(EMAIL_ADDRESS, DOMAIN, MANAGED_DOMAIN))
   }
 
   /**
@@ -2141,7 +2141,7 @@ package pinpointemail {
     val FAILED            = "FAILED"
     val TEMPORARY_FAILURE = "TEMPORARY_FAILURE"
 
-    val values = IndexedSeq(PENDING, SUCCESS, FAILED, TEMPORARY_FAILURE)
+    val values = js.Object.freeze(js.Array(PENDING, SUCCESS, FAILED, TEMPORARY_FAILURE))
   }
 
   /**
@@ -2943,7 +2943,7 @@ package pinpointemail {
     val REQUIRE  = "REQUIRE"
     val OPTIONAL = "OPTIONAL"
 
-    val values = IndexedSeq(REQUIRE, OPTIONAL)
+    val values = js.Object.freeze(js.Array(REQUIRE, OPTIONAL))
   }
 
   /**
@@ -3074,6 +3074,6 @@ package pinpointemail {
     val IN_PROGRESS = "IN_PROGRESS"
     val DONE        = "DONE"
 
-    val values = IndexedSeq(IN_PROGRESS, DONE)
+    val values = js.Object.freeze(js.Array(IN_PROGRESS, DONE))
   }
 }
diff --git a/services/pinpointsmsvoice/src/main/scala/facade/amazonaws/services/PinpointSMSVoice.scala b/services/pinpointsmsvoice/src/main/scala/facade/amazonaws/services/PinpointSMSVoice.scala
index f0259b826..73e5a8db9 100644
--- a/services/pinpointsmsvoice/src/main/scala/facade/amazonaws/services/PinpointSMSVoice.scala
+++ b/services/pinpointsmsvoice/src/main/scala/facade/amazonaws/services/PinpointSMSVoice.scala
@@ -327,7 +327,7 @@ package pinpointsmsvoice {
     val FAILED         = "FAILED"
     val NO_ANSWER      = "NO_ANSWER"
 
-    val values = IndexedSeq(INITIATED_CALL, RINGING, ANSWERED, COMPLETED_CALL, BUSY, FAILED, NO_ANSWER)
+    val values = js.Object.freeze(js.Array(INITIATED_CALL, RINGING, ANSWERED, COMPLETED_CALL, BUSY, FAILED, NO_ANSWER))
   }
 
   @js.native
diff --git a/services/polly/src/main/scala/facade/amazonaws/services/Polly.scala b/services/polly/src/main/scala/facade/amazonaws/services/Polly.scala
index 685e22d9a..843e2fffa 100644
--- a/services/polly/src/main/scala/facade/amazonaws/services/Polly.scala
+++ b/services/polly/src/main/scala/facade/amazonaws/services/Polly.scala
@@ -168,14 +168,14 @@ package polly {
     val standard = "standard"
     val neural   = "neural"
 
-    val values = IndexedSeq(standard, neural)
+    val values = js.Object.freeze(js.Array(standard, neural))
   }
 
   object GenderEnum {
     val Female = "Female"
     val Male   = "Male"
 
-    val values = IndexedSeq(Female, Male)
+    val values = js.Object.freeze(js.Array(Female, Male))
   }
 
   @js.native
@@ -276,36 +276,38 @@ package polly {
     val `sv-SE`     = "sv-SE"
     val `tr-TR`     = "tr-TR"
 
-    val values = IndexedSeq(
-      arb,
-      `cmn-CN`,
-      `cy-GB`,
-      `da-DK`,
-      `de-DE`,
-      `en-AU`,
-      `en-GB`,
-      `en-GB-WLS`,
-      `en-IN`,
-      `en-US`,
-      `es-ES`,
-      `es-MX`,
-      `es-US`,
-      `fr-CA`,
-      `fr-FR`,
-      `is-IS`,
-      `it-IT`,
-      `ja-JP`,
-      `hi-IN`,
-      `ko-KR`,
-      `nb-NO`,
-      `nl-NL`,
-      `pl-PL`,
-      `pt-BR`,
-      `pt-PT`,
-      `ro-RO`,
-      `ru-RU`,
-      `sv-SE`,
-      `tr-TR`
+    val values = js.Object.freeze(
+      js.Array(
+        arb,
+        `cmn-CN`,
+        `cy-GB`,
+        `da-DK`,
+        `de-DE`,
+        `en-AU`,
+        `en-GB`,
+        `en-GB-WLS`,
+        `en-IN`,
+        `en-US`,
+        `es-ES`,
+        `es-MX`,
+        `es-US`,
+        `fr-CA`,
+        `fr-FR`,
+        `is-IS`,
+        `it-IT`,
+        `ja-JP`,
+        `hi-IN`,
+        `ko-KR`,
+        `nb-NO`,
+        `nl-NL`,
+        `pl-PL`,
+        `pt-BR`,
+        `pt-PT`,
+        `ro-RO`,
+        `ru-RU`,
+        `sv-SE`,
+        `tr-TR`
+      )
     )
   }
 
@@ -462,7 +464,7 @@ package polly {
     val ogg_vorbis = "ogg_vorbis"
     val pcm        = "pcm"
 
-    val values = IndexedSeq(json, mp3, ogg_vorbis, pcm)
+    val values = js.Object.freeze(js.Array(json, mp3, ogg_vorbis, pcm))
   }
 
   @js.native
@@ -503,7 +505,7 @@ package polly {
     val viseme   = "viseme"
     val word     = "word"
 
-    val values = IndexedSeq(sentence, ssml, viseme, word)
+    val values = js.Object.freeze(js.Array(sentence, ssml, viseme, word))
   }
 
   @js.native
@@ -699,14 +701,14 @@ package polly {
     val completed  = "completed"
     val failed     = "failed"
 
-    val values = IndexedSeq(scheduled, inProgress, completed, failed)
+    val values = js.Object.freeze(js.Array(scheduled, inProgress, completed, failed))
   }
 
   object TextTypeEnum {
     val ssml = "ssml"
     val text = "text"
 
-    val values = IndexedSeq(ssml, text)
+    val values = js.Object.freeze(js.Array(ssml, text))
   }
 
   /**
@@ -805,65 +807,67 @@ package polly {
     val Zeina     = "Zeina"
     val Zhiyu     = "Zhiyu"
 
-    val values = IndexedSeq(
-      Aditi,
-      Amy,
-      Astrid,
-      Bianca,
-      Brian,
-      Carla,
-      Carmen,
-      Celine,
-      Chantal,
-      Conchita,
-      Cristiano,
-      Dora,
-      Emma,
-      Enrique,
-      Ewa,
-      Filiz,
-      Geraint,
-      Giorgio,
-      Gwyneth,
-      Hans,
-      Ines,
-      Ivy,
-      Jacek,
-      Jan,
-      Joanna,
-      Joey,
-      Justin,
-      Karl,
-      Kendra,
-      Kimberly,
-      Lea,
-      Liv,
-      Lotte,
-      Lucia,
-      Mads,
-      Maja,
-      Marlene,
-      Mathieu,
-      Matthew,
-      Maxim,
-      Mia,
-      Miguel,
-      Mizuki,
-      Naja,
-      Nicole,
-      Penelope,
-      Raveena,
-      Ricardo,
-      Ruben,
-      Russell,
-      Salli,
-      Seoyeon,
-      Takumi,
-      Tatyana,
-      Vicki,
-      Vitoria,
-      Zeina,
-      Zhiyu
+    val values = js.Object.freeze(
+      js.Array(
+        Aditi,
+        Amy,
+        Astrid,
+        Bianca,
+        Brian,
+        Carla,
+        Carmen,
+        Celine,
+        Chantal,
+        Conchita,
+        Cristiano,
+        Dora,
+        Emma,
+        Enrique,
+        Ewa,
+        Filiz,
+        Geraint,
+        Giorgio,
+        Gwyneth,
+        Hans,
+        Ines,
+        Ivy,
+        Jacek,
+        Jan,
+        Joanna,
+        Joey,
+        Justin,
+        Karl,
+        Kendra,
+        Kimberly,
+        Lea,
+        Liv,
+        Lotte,
+        Lucia,
+        Mads,
+        Maja,
+        Marlene,
+        Mathieu,
+        Matthew,
+        Maxim,
+        Mia,
+        Miguel,
+        Mizuki,
+        Naja,
+        Nicole,
+        Penelope,
+        Raveena,
+        Ricardo,
+        Ruben,
+        Russell,
+        Salli,
+        Seoyeon,
+        Takumi,
+        Tatyana,
+        Vicki,
+        Vitoria,
+        Zeina,
+        Zhiyu
+      )
     )
   }
 }
diff --git a/services/pricing/src/main/scala/facade/amazonaws/services/Pricing.scala b/services/pricing/src/main/scala/facade/amazonaws/services/Pricing.scala
index 1948d3a1c..e158300b8 100644
--- a/services/pricing/src/main/scala/facade/amazonaws/services/Pricing.scala
+++ b/services/pricing/src/main/scala/facade/amazonaws/services/Pricing.scala
@@ -140,7 +140,7 @@ package pricing {
   object FilterTypeEnum {
     val TERM_MATCH = "TERM_MATCH"
 
-    val values = IndexedSeq(TERM_MATCH)
+    val values = js.Object.freeze(js.Array(TERM_MATCH))
   }
 
   @js.native
diff --git a/services/quicksight/src/main/scala/facade/amazonaws/services/QuickSight.scala b/services/quicksight/src/main/scala/facade/amazonaws/services/QuickSight.scala
index bca551271..4c7c152ec 100644
--- a/services/quicksight/src/main/scala/facade/amazonaws/services/QuickSight.scala
+++ b/services/quicksight/src/main/scala/facade/amazonaws/services/QuickSight.scala
@@ -554,7 +554,7 @@ package quicksight {
     val IAM        = "IAM"
     val QUICKSIGHT = "QUICKSIGHT"
 
-    val values = IndexedSeq(IAM, QUICKSIGHT)
+    val values = js.Object.freeze(js.Array(IAM, QUICKSIGHT))
   }
 
   @js.native
@@ -965,6 +965,6 @@ package quicksight {
     val RESTRICTED_AUTHOR = "RESTRICTED_AUTHOR"
     val RESTRICTED_READER = "RESTRICTED_READER"
 
-    val values = IndexedSeq(ADMIN, AUTHOR, READER, RESTRICTED_AUTHOR, RESTRICTED_READER)
+    val values = js.Object.freeze(js.Array(ADMIN, AUTHOR, READER, RESTRICTED_AUTHOR, RESTRICTED_READER))
   }
 }
diff --git a/services/ram/src/main/scala/facade/amazonaws/services/RAM.scala b/services/ram/src/main/scala/facade/amazonaws/services/RAM.scala
index 0118bf889..682eef08f 100644
--- a/services/ram/src/main/scala/facade/amazonaws/services/RAM.scala
+++ b/services/ram/src/main/scala/facade/amazonaws/services/RAM.scala
@@ -762,7 +762,7 @@ package ram {
     val SELF             = "SELF"
     val `OTHER-ACCOUNTS` = "OTHER-ACCOUNTS"
 
-    val values = IndexedSeq(SELF, `OTHER-ACCOUNTS`)
+    val values = js.Object.freeze(js.Array(SELF, `OTHER-ACCOUNTS`))
   }
 
   /**
@@ -853,14 +853,14 @@ package ram {
     val DISASSOCIATING = "DISASSOCIATING"
     val DISASSOCIATED  = "DISASSOCIATED"
 
-    val values = IndexedSeq(ASSOCIATING, ASSOCIATED, FAILED, DISASSOCIATING, DISASSOCIATED)
+    val values = js.Object.freeze(js.Array(ASSOCIATING, ASSOCIATED, FAILED, DISASSOCIATING, DISASSOCIATED))
   }
 
   object ResourceShareAssociationTypeEnum {
     val PRINCIPAL = "PRINCIPAL"
     val RESOURCE  = "RESOURCE"
 
-    val values = IndexedSeq(PRINCIPAL, RESOURCE)
+    val values = js.Object.freeze(js.Array(PRINCIPAL, RESOURCE))
   }
 
   /**
@@ -908,7 +908,7 @@ package ram {
     val REJECTED = "REJECTED"
     val EXPIRED  = "EXPIRED"
 
-    val values = IndexedSeq(PENDING, ACCEPTED, REJECTED, EXPIRED)
+    val values = js.Object.freeze(js.Array(PENDING, ACCEPTED, REJECTED, EXPIRED))
   }
 
   object ResourceShareStatusEnum {
@@ -918,7 +918,7 @@ package ram {
     val DELETING = "DELETING"
     val DELETED  = "DELETED"
 
-    val values = IndexedSeq(PENDING, ACTIVE, FAILED, DELETING, DELETED)
+    val values = js.Object.freeze(js.Array(PENDING, ACTIVE, FAILED, DELETING, DELETED))
   }
 
   object ResourceStatusEnum {
@@ -927,7 +927,7 @@ package ram {
     val LIMIT_EXCEEDED              = "LIMIT_EXCEEDED"
     val UNAVAILABLE                 = "UNAVAILABLE"
 
-    val values = IndexedSeq(AVAILABLE, ZONAL_RESOURCE_INACCESSIBLE, LIMIT_EXCEEDED, UNAVAILABLE)
+    val values = js.Object.freeze(js.Array(AVAILABLE, ZONAL_RESOURCE_INACCESSIBLE, LIMIT_EXCEEDED, UNAVAILABLE))
   }
 
   /**
diff --git a/services/rds/src/main/scala/facade/amazonaws/services/RDS.scala b/services/rds/src/main/scala/facade/amazonaws/services/RDS.scala
index 4cb9edb13..77d697794 100644
--- a/services/rds/src/main/scala/facade/amazonaws/services/RDS.scala
+++ b/services/rds/src/main/scala/facade/amazonaws/services/RDS.scala
@@ -630,7 +630,7 @@ package rds {
     val sync  = "sync"
     val async = "async"
 
-    val values = IndexedSeq(sync, async)
+    val values = js.Object.freeze(js.Array(sync, async))
   }
 
   object ActivityStreamStatusEnum {
@@ -639,7 +639,7 @@ package rds {
     val started  = "started"
     val stopping = "stopping"
 
-    val values = IndexedSeq(stopped, starting, started, stopping)
+    val values = js.Object.freeze(js.Array(stopped, starting, started, stopping))
   }
 
   @js.native
@@ -753,7 +753,7 @@ package rds {
     val immediate        = "immediate"
     val `pending-reboot` = "pending-reboot"
 
-    val values = IndexedSeq(immediate, `pending-reboot`)
+    val values = js.Object.freeze(js.Array(immediate, `pending-reboot`))
   }
 
   /**
@@ -8509,13 +8509,15 @@ package rds {
     val `db-cluster`          = "db-cluster"
     val `db-cluster-snapshot` = "db-cluster-snapshot"
 
-    val values = IndexedSeq(
-      `db-instance`,
-      `db-parameter-group`,
-      `db-security-group`,
-      `db-snapshot`,
-      `db-cluster`,
-      `db-cluster-snapshot`
+    val values = js.Object.freeze(
+      js.Array(
+        `db-instance`,
+        `db-parameter-group`,
+        `db-security-group`,
+        `db-snapshot`,
+        `db-cluster`,
+        `db-cluster-snapshot`
+      )
     )
   }
 
diff --git a/services/redshift/src/main/scala/facade/amazonaws/services/Redshift.scala b/services/redshift/src/main/scala/facade/amazonaws/services/Redshift.scala
index e6e324da5..436b0f6f5 100644
--- a/services/redshift/src/main/scala/facade/amazonaws/services/Redshift.scala
+++ b/services/redshift/src/main/scala/facade/amazonaws/services/Redshift.scala
@@ -4324,7 +4324,7 @@ package redshift {
     val static  = "static"
     val dynamic = "dynamic"
 
-    val values = IndexedSeq(static, dynamic)
+    val values = js.Object.freeze(js.Array(static, dynamic))
   }
 
   /**
@@ -4571,7 +4571,7 @@ package redshift {
     val Regular    = "Regular"
     val Upgradable = "Upgradable"
 
-    val values = IndexedSeq(Regular, Upgradable)
+    val values = js.Object.freeze(js.Array(Regular, Upgradable))
   }
 
   /**
@@ -5129,7 +5129,7 @@ package redshift {
     val ACTIVE    = "ACTIVE"
     val FAILED    = "FAILED"
 
-    val values = IndexedSeq(MODIFYING, ACTIVE, FAILED)
+    val values = js.Object.freeze(js.Array(MODIFYING, ACTIVE, FAILED))
   }
 
   /**
@@ -5259,7 +5259,7 @@ package redshift {
     val TOTAL_SIZE  = "TOTAL_SIZE"
     val CREATE_TIME = "CREATE_TIME"
 
-    val values = IndexedSeq(SOURCE_TYPE, TOTAL_SIZE, CREATE_TIME)
+    val values = js.Object.freeze(js.Array(SOURCE_TYPE, TOTAL_SIZE, CREATE_TIME))
   }
 
   /**
@@ -5419,7 +5419,7 @@ package redshift {
     val ASC  = "ASC"
     val DESC = "DESC"
 
-    val values = IndexedSeq(ASC, DESC)
+    val values = js.Object.freeze(js.Array(ASC, DESC))
   }
 
   object SourceTypeEnum {
@@ -5428,7 +5428,8 @@ package redshift {
     val `cluster-security-group`  = "cluster-security-group"
     val `cluster-snapshot`        = "cluster-snapshot"
 
-    val values = IndexedSeq(cluster, `cluster-parameter-group`, `cluster-security-group`, `cluster-snapshot`)
+    val values =
+      js.Object.freeze(js.Array(cluster, `cluster-parameter-group`, `cluster-security-group`, `cluster-snapshot`))
   }
 
   /**
@@ -5576,7 +5577,7 @@ package redshift {
     val FAILED      = "FAILED"
     val CANCELED    = "CANCELED"
 
-    val values = IndexedSeq(PENDING, IN_PROGRESS, SUCCEEDED, FAILED, CANCELED)
+    val values = js.Object.freeze(js.Array(PENDING, IN_PROGRESS, SUCCEEDED, FAILED, CANCELED))
   }
 
   /**
diff --git a/services/rekognition/src/main/scala/facade/amazonaws/services/Rekognition.scala b/services/rekognition/src/main/scala/facade/amazonaws/services/Rekognition.scala
index a7358c98a..e3e26a63d 100644
--- a/services/rekognition/src/main/scala/facade/amazonaws/services/Rekognition.scala
+++ b/services/rekognition/src/main/scala/facade/amazonaws/services/Rekognition.scala
@@ -236,7 +236,7 @@ package rekognition {
     val DEFAULT = "DEFAULT"
     val ALL     = "ALL"
 
-    val values = IndexedSeq(DEFAULT, ALL)
+    val values = js.Object.freeze(js.Array(DEFAULT, ALL))
   }
 
   /**
@@ -379,7 +379,7 @@ package rekognition {
     val ID        = "ID"
     val TIMESTAMP = "TIMESTAMP"
 
-    val values = IndexedSeq(ID, TIMESTAMP)
+    val values = js.Object.freeze(js.Array(ID, TIMESTAMP))
   }
 
   /**
@@ -533,7 +533,7 @@ package rekognition {
     val NAME      = "NAME"
     val TIMESTAMP = "TIMESTAMP"
 
-    val values = IndexedSeq(NAME, TIMESTAMP)
+    val values = js.Object.freeze(js.Array(NAME, TIMESTAMP))
   }
 
   @js.native
@@ -998,7 +998,7 @@ package rekognition {
     val UNKNOWN   = "UNKNOWN"
     val FEAR      = "FEAR"
 
-    val values = IndexedSeq(HAPPY, SAD, ANGRY, CONFUSED, DISGUSTED, SURPRISED, CALM, UNKNOWN, FEAR)
+    val values = js.Object.freeze(js.Array(HAPPY, SAD, ANGRY, CONFUSED, DISGUSTED, SURPRISED, CALM, UNKNOWN, FEAR))
   }
 
   /**
@@ -1077,7 +1077,7 @@ package rekognition {
     val DEFAULT = "DEFAULT"
     val ALL     = "ALL"
 
-    val values = IndexedSeq(DEFAULT, ALL)
+    val values = js.Object.freeze(js.Array(DEFAULT, ALL))
   }
 
   /**
@@ -1234,7 +1234,7 @@ package rekognition {
     val INDEX     = "INDEX"
     val TIMESTAMP = "TIMESTAMP"
 
-    val values = IndexedSeq(INDEX, TIMESTAMP)
+    val values = js.Object.freeze(js.Array(INDEX, TIMESTAMP))
   }
 
   /**
@@ -1262,7 +1262,7 @@ package rekognition {
     val Male   = "Male"
     val Female = "Female"
 
-    val values = IndexedSeq(Male, Female)
+    val values = js.Object.freeze(js.Array(Male, Female))
   }
 
   /**
@@ -1856,7 +1856,7 @@ package rekognition {
     val NAME      = "NAME"
     val TIMESTAMP = "TIMESTAMP"
 
-    val values = IndexedSeq(NAME, TIMESTAMP)
+    val values = js.Object.freeze(js.Array(NAME, TIMESTAMP))
   }
 
   /**
@@ -1915,37 +1915,39 @@ package rekognition {
     val midJawlineRight   = "midJawlineRight"
     val upperJawlineRight = "upperJawlineRight"
 
-    val values = IndexedSeq(
-      eyeLeft,
-      eyeRight,
-      nose,
-      mouthLeft,
-      mouthRight,
-      leftEyeBrowLeft,
-      leftEyeBrowRight,
-      leftEyeBrowUp,
-      rightEyeBrowLeft,
-      rightEyeBrowRight,
-      rightEyeBrowUp,
-      leftEyeLeft,
-      leftEyeRight,
-      leftEyeUp,
-      leftEyeDown,
-      rightEyeLeft,
-      rightEyeRight,
-      rightEyeUp,
-      rightEyeDown,
-      noseLeft,
-      noseRight,
-      mouthUp,
-      mouthDown,
-      leftPupil,
-      rightPupil,
-      upperJawlineLeft,
-      midJawlineLeft,
-      chinBottom,
-      midJawlineRight,
-      upperJawlineRight
+    val values = js.Object.freeze(
+      js.Array(
+        eyeLeft,
+        eyeRight,
+        nose,
+        mouthLeft,
+        mouthRight,
+        leftEyeBrowLeft,
+        leftEyeBrowRight,
+        leftEyeBrowUp,
+        rightEyeBrowLeft,
+        rightEyeBrowRight,
+        rightEyeBrowUp,
+        leftEyeLeft,
+        leftEyeRight,
+        leftEyeUp,
+        leftEyeDown,
+        rightEyeLeft,
+        rightEyeRight,
+        rightEyeUp,
+        rightEyeDown,
+        noseLeft,
+        noseRight,
+        mouthUp,
+        mouthDown,
+        leftPupil,
+        rightPupil,
+        upperJawlineLeft,
+        midJawlineLeft,
+        chinBottom,
+        midJawlineRight,
+        upperJawlineRight
+      )
     )
   }
 
@@ -2163,7 +2165,7 @@ package rekognition {
     val ROTATE_180 = "ROTATE_180"
     val ROTATE_270 = "ROTATE_270"
 
-    val values = IndexedSeq(ROTATE_0, ROTATE_90, ROTATE_180, ROTATE_270)
+    val values = js.Object.freeze(js.Array(ROTATE_0, ROTATE_90, ROTATE_180, ROTATE_270))
   }
 
   /**
@@ -2258,7 +2260,7 @@ package rekognition {
     val INDEX     = "INDEX"
     val TIMESTAMP = "TIMESTAMP"
 
-    val values = IndexedSeq(INDEX, TIMESTAMP)
+    val values = js.Object.freeze(js.Array(INDEX, TIMESTAMP))
   }
 
   /**
@@ -2311,7 +2313,7 @@ package rekognition {
     val NONE = "NONE"
     val AUTO = "AUTO"
 
-    val values = IndexedSeq(NONE, AUTO)
+    val values = js.Object.freeze(js.Array(NONE, AUTO))
   }
 
   object ReasonEnum {
@@ -2322,8 +2324,9 @@ package rekognition {
     val LOW_CONFIDENCE     = "LOW_CONFIDENCE"
     val SMALL_BOUNDING_BOX = "SMALL_BOUNDING_BOX"
 
-    val values =
-      IndexedSeq(EXCEEDS_MAX_FACES, EXTREME_POSE, LOW_BRIGHTNESS, LOW_SHARPNESS, LOW_CONFIDENCE, SMALL_BOUNDING_BOX)
+    val values = js.Object.freeze(
+      js.Array(EXCEEDS_MAX_FACES, EXTREME_POSE, LOW_BRIGHTNESS, LOW_SHARPNESS, LOW_CONFIDENCE, SMALL_BOUNDING_BOX)
+    )
   }
 
   @js.native
@@ -2909,7 +2912,7 @@ package rekognition {
     val FAILED   = "FAILED"
     val STOPPING = "STOPPING"
 
-    val values = IndexedSeq(STOPPED, STARTING, RUNNING, FAILED, STOPPING)
+    val values = js.Object.freeze(js.Array(STOPPED, STARTING, RUNNING, FAILED, STOPPING))
   }
 
   /**
@@ -2973,7 +2976,7 @@ package rekognition {
     val LINE = "LINE"
     val WORD = "WORD"
 
-    val values = IndexedSeq(LINE, WORD)
+    val values = js.Object.freeze(js.Array(LINE, WORD))
   }
 
   /**
@@ -3020,7 +3023,7 @@ package rekognition {
     val SUCCEEDED   = "SUCCEEDED"
     val FAILED      = "FAILED"
 
-    val values = IndexedSeq(IN_PROGRESS, SUCCEEDED, FAILED)
+    val values = js.Object.freeze(js.Array(IN_PROGRESS, SUCCEEDED, FAILED))
   }
 
   /**
diff --git a/services/resourcegroups/src/main/scala/facade/amazonaws/services/ResourceGroups.scala b/services/resourcegroups/src/main/scala/facade/amazonaws/services/ResourceGroups.scala
index e012352ab..e8b19861d 100644
--- a/services/resourcegroups/src/main/scala/facade/amazonaws/services/ResourceGroups.scala
+++ b/services/resourcegroups/src/main/scala/facade/amazonaws/services/ResourceGroups.scala
@@ -311,7 +311,7 @@ package resourcegroups {
   object GroupFilterNameEnum {
     val `resource-type` = "resource-type"
 
-    val values = IndexedSeq(`resource-type`)
+    val values = js.Object.freeze(js.Array(`resource-type`))
   }
 
   /**
@@ -472,14 +472,14 @@ package resourcegroups {
     val CLOUDFORMATION_STACK_INACTIVE     = "CLOUDFORMATION_STACK_INACTIVE"
     val CLOUDFORMATION_STACK_NOT_EXISTING = "CLOUDFORMATION_STACK_NOT_EXISTING"
 
-    val values = IndexedSeq(CLOUDFORMATION_STACK_INACTIVE, CLOUDFORMATION_STACK_NOT_EXISTING)
+    val values = js.Object.freeze(js.Array(CLOUDFORMATION_STACK_INACTIVE, CLOUDFORMATION_STACK_NOT_EXISTING))
   }
 
   object QueryTypeEnum {
     val TAG_FILTERS_1_0          = "TAG_FILTERS_1_0"
     val CLOUDFORMATION_STACK_1_0 = "CLOUDFORMATION_STACK_1_0"
 
-    val values = IndexedSeq(TAG_FILTERS_1_0, CLOUDFORMATION_STACK_1_0)
+    val values = js.Object.freeze(js.Array(TAG_FILTERS_1_0, CLOUDFORMATION_STACK_1_0))
   }
 
   /**
@@ -508,7 +508,7 @@ package resourcegroups {
   object ResourceFilterNameEnum {
     val `resource-type` = "resource-type"
 
-    val values = IndexedSeq(`resource-type`)
+    val values = js.Object.freeze(js.Array(`resource-type`))
   }
 
   /**
diff --git a/services/resourcegroupstaggingapi/src/main/scala/facade/amazonaws/services/ResourceGroupsTaggingAPI.scala b/services/resourcegroupstaggingapi/src/main/scala/facade/amazonaws/services/ResourceGroupsTaggingAPI.scala
index 61ee299e6..42cd62ad2 100644
--- a/services/resourcegroupstaggingapi/src/main/scala/facade/amazonaws/services/ResourceGroupsTaggingAPI.scala
+++ b/services/resourcegroupstaggingapi/src/main/scala/facade/amazonaws/services/ResourceGroupsTaggingAPI.scala
@@ -62,7 +62,7 @@ package resourcegroupstaggingapi {
     val InternalServiceException  = "InternalServiceException"
     val InvalidParameterException = "InvalidParameterException"
 
-    val values = IndexedSeq(InternalServiceException, InvalidParameterException)
+    val values = js.Object.freeze(js.Array(InternalServiceException, InvalidParameterException))
   }
 
   /**
diff --git a/services/robomaker/src/main/scala/facade/amazonaws/services/RoboMaker.scala b/services/robomaker/src/main/scala/facade/amazonaws/services/RoboMaker.scala
index 3a170b3a2..5e786cee7 100644
--- a/services/robomaker/src/main/scala/facade/amazonaws/services/RoboMaker.scala
+++ b/services/robomaker/src/main/scala/facade/amazonaws/services/RoboMaker.scala
@@ -239,7 +239,7 @@ package robomaker {
     val ARM64  = "ARM64"
     val ARMHF  = "ARMHF"
 
-    val values = IndexedSeq(X86_64, ARM64, ARMHF)
+    val values = js.Object.freeze(js.Array(X86_64, ARM64, ARMHF))
   }
 
   @js.native
@@ -1149,24 +1149,26 @@ package robomaker {
     val BadPermissionError                  = "BadPermissionError"
     val InternalServerError                 = "InternalServerError"
 
-    val values = IndexedSeq(
-      ResourceNotFound,
-      EnvironmentSetupError,
-      EtagMismatch,
-      FailureThresholdBreached,
-      RobotDeploymentAborted,
-      RobotDeploymentNoResponse,
-      RobotAgentConnectionTimeout,
-      GreengrassDeploymentFailed,
-      MissingRobotArchitecture,
-      MissingRobotApplicationArchitecture,
-      MissingRobotDeploymentResource,
-      GreengrassGroupVersionDoesNotExist,
-      ExtractingBundleFailure,
-      PreLaunchFileFailure,
-      PostLaunchFileFailure,
-      BadPermissionError,
-      InternalServerError
+    val values = js.Object.freeze(
+      js.Array(
+        ResourceNotFound,
+        EnvironmentSetupError,
+        EtagMismatch,
+        FailureThresholdBreached,
+        RobotDeploymentAborted,
+        RobotDeploymentNoResponse,
+        RobotAgentConnectionTimeout,
+        GreengrassDeploymentFailed,
+        MissingRobotArchitecture,
+        MissingRobotApplicationArchitecture,
+        MissingRobotDeploymentResource,
+        GreengrassGroupVersionDoesNotExist,
+        ExtractingBundleFailure,
+        PreLaunchFileFailure,
+        PostLaunchFileFailure,
+        BadPermissionError,
+        InternalServerError
+      )
     )
   }
 
@@ -1210,7 +1212,7 @@ package robomaker {
     val Succeeded  = "Succeeded"
     val Canceled   = "Canceled"
 
-    val values = IndexedSeq(Pending, Preparing, InProgress, Failed, Succeeded, Canceled)
+    val values = js.Object.freeze(js.Array(Pending, Preparing, InProgress, Failed, Succeeded, Canceled))
   }
 
   @js.native
@@ -1632,7 +1634,7 @@ package robomaker {
     val Fail     = "Fail"
     val Continue = "Continue"
 
-    val values = IndexedSeq(Fail, Continue)
+    val values = js.Object.freeze(js.Array(Fail, Continue))
   }
 
   /**
@@ -2123,7 +2125,7 @@ package robomaker {
   object RenderingEngineTypeEnum {
     val OGRE = "OGRE"
 
-    val values = IndexedSeq(OGRE)
+    val values = js.Object.freeze(js.Array(OGRE))
   }
 
   @js.native
@@ -2297,8 +2299,9 @@ package robomaker {
     val ExecutingPostLaunch   = "ExecutingPostLaunch"
     val Finished              = "Finished"
 
-    val values =
-      IndexedSeq(Validating, DownloadingExtracting, ExecutingPreLaunch, Launching, ExecutingPostLaunch, Finished)
+    val values = js.Object.freeze(
+      js.Array(Validating, DownloadingExtracting, ExecutingPreLaunch, Launching, ExecutingPostLaunch, Finished)
+    )
   }
 
   /**
@@ -2325,14 +2328,14 @@ package robomaker {
   object RobotSoftwareSuiteTypeEnum {
     val ROS = "ROS"
 
-    val values = IndexedSeq(ROS)
+    val values = js.Object.freeze(js.Array(ROS))
   }
 
   object RobotSoftwareSuiteVersionTypeEnum {
     val Kinetic = "Kinetic"
     val Melodic = "Melodic"
 
-    val values = IndexedSeq(Kinetic, Melodic)
+    val values = js.Object.freeze(js.Array(Kinetic, Melodic))
   }
 
   object RobotStatusEnum {
@@ -2344,7 +2347,8 @@ package robomaker {
     val InSync               = "InSync"
     val NoResponse           = "NoResponse"
 
-    val values = IndexedSeq(Available, Registered, PendingNewDeployment, Deploying, Failed, InSync, NoResponse)
+    val values =
+      js.Object.freeze(js.Array(Available, Registered, PendingNewDeployment, Deploying, Failed, InSync, NoResponse))
   }
 
   /**
@@ -2524,30 +2528,32 @@ package robomaker {
     val WrongRegionRobotApplication                = "WrongRegionRobotApplication"
     val WrongRegionSimulationApplication           = "WrongRegionSimulationApplication"
 
-    val values = IndexedSeq(
-      InternalServiceError,
-      RobotApplicationCrash,
-      SimulationApplicationCrash,
-      BadPermissionsRobotApplication,
-      BadPermissionsSimulationApplication,
-      BadPermissionsS3Object,
-      BadPermissionsS3Output,
-      BadPermissionsCloudwatchLogs,
-      SubnetIpLimitExceeded,
-      ENILimitExceeded,
-      BadPermissionsUserCredentials,
-      InvalidBundleRobotApplication,
-      InvalidBundleSimulationApplication,
-      InvalidS3Resource,
-      MismatchedEtag,
-      RobotApplicationVersionMismatchedEtag,
-      SimulationApplicationVersionMismatchedEtag,
-      ResourceNotFound,
-      InvalidInput,
-      WrongRegionS3Bucket,
-      WrongRegionS3Output,
-      WrongRegionRobotApplication,
-      WrongRegionSimulationApplication
+    val values = js.Object.freeze(
+      js.Array(
+        InternalServiceError,
+        RobotApplicationCrash,
+        SimulationApplicationCrash,
+        BadPermissionsRobotApplication,
+        BadPermissionsSimulationApplication,
+        BadPermissionsS3Object,
+        BadPermissionsS3Output,
+        BadPermissionsCloudwatchLogs,
+        SubnetIpLimitExceeded,
+        ENILimitExceeded,
+        BadPermissionsUserCredentials,
+        InvalidBundleRobotApplication,
+        InvalidBundleSimulationApplication,
+        InvalidS3Resource,
+        MismatchedEtag,
+        RobotApplicationVersionMismatchedEtag,
+        SimulationApplicationVersionMismatchedEtag,
+        ResourceNotFound,
+        InvalidInput,
+        WrongRegionS3Bucket,
+        WrongRegionS3Output,
+        WrongRegionRobotApplication,
+        WrongRegionSimulationApplication
+      )
     )
   }
 
@@ -2563,17 +2569,19 @@ package robomaker {
     val Terminated    = "Terminated"
     val Canceled      = "Canceled"
 
-    val values = IndexedSeq(
-      Pending,
-      Preparing,
-      Running,
-      Restarting,
-      Completed,
-      Failed,
-      RunningFailed,
-      Terminating,
-      Terminated,
-      Canceled
+    val values = js.Object.freeze(
+      js.Array(
+        Pending,
+        Preparing,
+        Running,
+        Restarting,
+        Completed,
+        Failed,
+        RunningFailed,
+        Terminating,
+        Terminated,
+        Canceled
+      )
     )
   }
 
@@ -2638,7 +2646,7 @@ package robomaker {
     val Gazebo     = "Gazebo"
     val RosbagPlay = "RosbagPlay"
 
-    val values = IndexedSeq(Gazebo, RosbagPlay)
+    val values = js.Object.freeze(js.Array(Gazebo, RosbagPlay))
   }
 
   /**
diff --git a/services/route53/src/main/scala/facade/amazonaws/services/Route53.scala b/services/route53/src/main/scala/facade/amazonaws/services/Route53.scala
index 2a83d2720..f8638be38 100644
--- a/services/route53/src/main/scala/facade/amazonaws/services/Route53.scala
+++ b/services/route53/src/main/scala/facade/amazonaws/services/Route53.scala
@@ -417,12 +417,14 @@ package route53 {
     val MAX_REUSABLE_DELEGATION_SETS_BY_OWNER = "MAX_REUSABLE_DELEGATION_SETS_BY_OWNER"
     val MAX_TRAFFIC_POLICIES_BY_OWNER         = "MAX_TRAFFIC_POLICIES_BY_OWNER"
 
-    val values = IndexedSeq(
-      MAX_HEALTH_CHECKS_BY_OWNER,
-      MAX_HOSTED_ZONES_BY_OWNER,
-      MAX_TRAFFIC_POLICY_INSTANCES_BY_OWNER,
-      MAX_REUSABLE_DELEGATION_SETS_BY_OWNER,
-      MAX_TRAFFIC_POLICIES_BY_OWNER
+    val values = js.Object.freeze(
+      js.Array(
+        MAX_HEALTH_CHECKS_BY_OWNER,
+        MAX_HOSTED_ZONES_BY_OWNER,
+        MAX_TRAFFIC_POLICY_INSTANCES_BY_OWNER,
+        MAX_REUSABLE_DELEGATION_SETS_BY_OWNER,
+        MAX_TRAFFIC_POLICIES_BY_OWNER
+      )
     )
   }
 
@@ -552,7 +554,7 @@ package route53 {
     val DELETE = "DELETE"
     val UPSERT = "UPSERT"
 
-    val values = IndexedSeq(CREATE, DELETE, UPSERT)
+    val values = js.Object.freeze(js.Array(CREATE, DELETE, UPSERT))
   }
 
   /**
@@ -654,7 +656,7 @@ package route53 {
     val PENDING = "PENDING"
     val INSYNC  = "INSYNC"
 
-    val values = IndexedSeq(PENDING, INSYNC)
+    val values = js.Object.freeze(js.Array(PENDING, INSYNC))
   }
 
   /**
@@ -765,28 +767,30 @@ package route53 {
     val `cn-northwest-1` = "cn-northwest-1"
     val `cn-north-1`     = "cn-north-1"
 
-    val values = IndexedSeq(
-      `us-east-1`,
-      `us-east-2`,
-      `us-west-1`,
-      `us-west-2`,
-      `ca-central-1`,
-      `eu-central-1`,
-      `eu-west-1`,
-      `eu-west-2`,
-      `eu-west-3`,
-      `ap-east-1`,
-      `me-south-1`,
-      `ap-south-1`,
-      `ap-southeast-1`,
-      `ap-southeast-2`,
-      `ap-northeast-1`,
-      `ap-northeast-2`,
-      `ap-northeast-3`,
-      `eu-north-1`,
-      `sa-east-1`,
-      `cn-northwest-1`,
-      `cn-north-1`
+    val values = js.Object.freeze(
+      js.Array(
+        `us-east-1`,
+        `us-east-2`,
+        `us-west-1`,
+        `us-west-2`,
+        `ca-central-1`,
+        `eu-central-1`,
+        `eu-west-1`,
+        `eu-west-2`,
+        `eu-west-3`,
+        `ap-east-1`,
+        `me-south-1`,
+        `ap-south-1`,
+        `ap-southeast-1`,
+        `ap-southeast-2`,
+        `ap-northeast-1`,
+        `ap-northeast-2`,
+        `ap-northeast-3`,
+        `eu-north-1`,
+        `sa-east-1`,
+        `cn-northwest-1`,
+        `cn-north-1`
+      )
     )
   }
 
@@ -796,8 +800,9 @@ package route53 {
     val LessThanThreshold             = "LessThanThreshold"
     val LessThanOrEqualToThreshold    = "LessThanOrEqualToThreshold"
 
-    val values =
-      IndexedSeq(GreaterThanOrEqualToThreshold, GreaterThanThreshold, LessThanThreshold, LessThanOrEqualToThreshold)
+    val values = js.Object.freeze(
+      js.Array(GreaterThanOrEqualToThreshold, GreaterThanThreshold, LessThanThreshold, LessThanOrEqualToThreshold)
+    )
   }
 
   /**
@@ -2414,15 +2419,17 @@ package route53 {
     val `ap-northeast-1` = "ap-northeast-1"
     val `sa-east-1`      = "sa-east-1"
 
-    val values = IndexedSeq(
-      `us-east-1`,
-      `us-west-1`,
-      `us-west-2`,
-      `eu-west-1`,
-      `ap-southeast-1`,
-      `ap-southeast-2`,
-      `ap-northeast-1`,
-      `sa-east-1`
+    val values = js.Object.freeze(
+      js.Array(
+        `us-east-1`,
+        `us-west-1`,
+        `us-west-2`,
+        `eu-west-1`,
+        `ap-southeast-1`,
+        `ap-southeast-2`,
+        `ap-northeast-1`,
+        `sa-east-1`
+      )
     )
   }
 
@@ -2435,7 +2442,8 @@ package route53 {
     val CALCULATED        = "CALCULATED"
     val CLOUDWATCH_METRIC = "CLOUDWATCH_METRIC"
 
-    val values = IndexedSeq(HTTP, HTTPS, HTTP_STR_MATCH, HTTPS_STR_MATCH, TCP, CALCULATED, CLOUDWATCH_METRIC)
+    val values =
+      js.Object.freeze(js.Array(HTTP, HTTPS, HTTP_STR_MATCH, HTTPS_STR_MATCH, TCP, CALCULATED, CLOUDWATCH_METRIC))
   }
 
   /**
@@ -2521,7 +2529,7 @@ package route53 {
     val MAX_RRSETS_BY_ZONE          = "MAX_RRSETS_BY_ZONE"
     val MAX_VPCS_ASSOCIATED_BY_ZONE = "MAX_VPCS_ASSOCIATED_BY_ZONE"
 
-    val values = IndexedSeq(MAX_RRSETS_BY_ZONE, MAX_VPCS_ASSOCIATED_BY_ZONE)
+    val values = js.Object.freeze(js.Array(MAX_RRSETS_BY_ZONE, MAX_VPCS_ASSOCIATED_BY_ZONE))
   }
 
   object InsufficientDataHealthStatusEnum {
@@ -2529,7 +2537,7 @@ package route53 {
     val Unhealthy       = "Unhealthy"
     val LastKnownStatus = "LastKnownStatus"
 
-    val values = IndexedSeq(Healthy, Unhealthy, LastKnownStatus)
+    val values = js.Object.freeze(js.Array(Healthy, Unhealthy, LastKnownStatus))
   }
 
   /**
@@ -3444,7 +3452,7 @@ package route53 {
     val AAAA  = "AAAA"
     val CAA   = "CAA"
 
-    val values = IndexedSeq(SOA, A, TXT, NS, CNAME, MX, NAPTR, PTR, SRV, SPF, AAAA, CAA)
+    val values = js.Object.freeze(js.Array(SOA, A, TXT, NS, CNAME, MX, NAPTR, PTR, SRV, SPF, AAAA, CAA))
   }
 
   object ResettableElementNameEnum {
@@ -3453,7 +3461,7 @@ package route53 {
     val ResourcePath             = "ResourcePath"
     val ChildHealthChecks        = "ChildHealthChecks"
 
-    val values = IndexedSeq(FullyQualifiedDomainName, Regions, ResourcePath, ChildHealthChecks)
+    val values = js.Object.freeze(js.Array(FullyQualifiedDomainName, Regions, ResourcePath, ChildHealthChecks))
   }
 
   /**
@@ -3538,7 +3546,7 @@ package route53 {
     val PRIMARY   = "PRIMARY"
     val SECONDARY = "SECONDARY"
 
-    val values = IndexedSeq(PRIMARY, SECONDARY)
+    val values = js.Object.freeze(js.Array(PRIMARY, SECONDARY))
   }
 
   object ResourceRecordSetRegionEnum {
@@ -3564,28 +3572,30 @@ package route53 {
     val `me-south-1`     = "me-south-1"
     val `ap-south-1`     = "ap-south-1"
 
-    val values = IndexedSeq(
-      `us-east-1`,
-      `us-east-2`,
-      `us-west-1`,
-      `us-west-2`,
-      `ca-central-1`,
-      `eu-west-1`,
-      `eu-west-2`,
-      `eu-west-3`,
-      `eu-central-1`,
-      `ap-southeast-1`,
-      `ap-southeast-2`,
-      `ap-northeast-1`,
-      `ap-northeast-2`,
-      `ap-northeast-3`,
-      `eu-north-1`,
-      `sa-east-1`,
-      `cn-north-1`,
-      `cn-northwest-1`,
-      `ap-east-1`,
-      `me-south-1`,
-      `ap-south-1`
+    val values = js.Object.freeze(
+      js.Array(
+        `us-east-1`,
+        `us-east-2`,
+        `us-west-1`,
+        `us-west-2`,
+        `ca-central-1`,
+        `eu-west-1`,
+        `eu-west-2`,
+        `eu-west-3`,
+        `eu-central-1`,
+        `ap-southeast-1`,
+        `ap-southeast-2`,
+        `ap-northeast-1`,
+        `ap-northeast-2`,
+        `ap-northeast-3`,
+        `eu-north-1`,
+        `sa-east-1`,
+        `cn-north-1`,
+        `cn-northwest-1`,
+        `ap-east-1`,
+        `me-south-1`,
+        `ap-south-1`
+      )
     )
   }
 
@@ -3639,7 +3649,7 @@ package route53 {
   object ReusableDelegationSetLimitTypeEnum {
     val MAX_ZONES_BY_REUSABLE_DELEGATION_SET = "MAX_ZONES_BY_REUSABLE_DELEGATION_SET"
 
-    val values = IndexedSeq(MAX_ZONES_BY_REUSABLE_DELEGATION_SET)
+    val values = js.Object.freeze(js.Array(MAX_ZONES_BY_REUSABLE_DELEGATION_SET))
   }
 
   object StatisticEnum {
@@ -3649,7 +3659,7 @@ package route53 {
     val Maximum     = "Maximum"
     val Minimum     = "Minimum"
 
-    val values = IndexedSeq(Average, Sum, SampleCount, Maximum, Minimum)
+    val values = js.Object.freeze(js.Array(Average, Sum, SampleCount, Maximum, Minimum))
   }
 
   /**
@@ -3698,7 +3708,7 @@ package route53 {
     val healthcheck = "healthcheck"
     val hostedzone  = "hostedzone"
 
-    val values = IndexedSeq(healthcheck, hostedzone)
+    val values = js.Object.freeze(js.Array(healthcheck, hostedzone))
   }
 
   /**
@@ -4153,27 +4163,29 @@ package route53 {
     val `ca-central-1`   = "ca-central-1"
     val `cn-north-1`     = "cn-north-1"
 
-    val values = IndexedSeq(
-      `us-east-1`,
-      `us-east-2`,
-      `us-west-1`,
-      `us-west-2`,
-      `eu-west-1`,
-      `eu-west-2`,
-      `eu-west-3`,
-      `eu-central-1`,
-      `ap-east-1`,
-      `me-south-1`,
-      `ap-southeast-1`,
-      `ap-southeast-2`,
-      `ap-south-1`,
-      `ap-northeast-1`,
-      `ap-northeast-2`,
-      `ap-northeast-3`,
-      `eu-north-1`,
-      `sa-east-1`,
-      `ca-central-1`,
-      `cn-north-1`
+    val values = js.Object.freeze(
+      js.Array(
+        `us-east-1`,
+        `us-east-2`,
+        `us-west-1`,
+        `us-west-2`,
+        `eu-west-1`,
+        `eu-west-2`,
+        `eu-west-3`,
+        `eu-central-1`,
+        `ap-east-1`,
+        `me-south-1`,
+        `ap-southeast-1`,
+        `ap-southeast-2`,
+        `ap-south-1`,
+        `ap-northeast-1`,
+        `ap-northeast-2`,
+        `ap-northeast-3`,
+        `eu-north-1`,
+        `sa-east-1`,
+        `ca-central-1`,
+        `cn-north-1`
+      )
     )
   }
 }
diff --git a/services/route53domains/src/main/scala/facade/amazonaws/services/Route53Domains.scala b/services/route53domains/src/main/scala/facade/amazonaws/services/Route53Domains.scala
index ffa7743a4..2fe598ff6 100644
--- a/services/route53domains/src/main/scala/facade/amazonaws/services/Route53Domains.scala
+++ b/services/route53domains/src/main/scala/facade/amazonaws/services/Route53Domains.scala
@@ -345,7 +345,7 @@ package route53domains {
     val PUBLIC_BODY = "PUBLIC_BODY"
     val RESELLER    = "RESELLER"
 
-    val values = IndexedSeq(PERSON, COMPANY, ASSOCIATION, PUBLIC_BODY, RESELLER)
+    val values = js.Object.freeze(js.Array(PERSON, COMPANY, ASSOCIATION, PUBLIC_BODY, RESELLER))
   }
 
   object CountryCodeEnum {
@@ -579,236 +579,238 @@ package route53domains {
     val ZM = "ZM"
     val ZW = "ZW"
 
-    val values = IndexedSeq(
-      AD,
-      AE,
-      AF,
-      AG,
-      AI,
-      AL,
-      AM,
-      AN,
-      AO,
-      AQ,
-      AR,
-      AS,
-      AT,
-      AU,
-      AW,
-      AZ,
-      BA,
-      BB,
-      BD,
-      BE,
-      BF,
-      BG,
-      BH,
-      BI,
-      BJ,
-      BL,
-      BM,
-      BN,
-      BO,
-      BR,
-      BS,
-      BT,
-      BW,
-      BY,
-      BZ,
-      CA,
-      CC,
-      CD,
-      CF,
-      CG,
-      CH,
-      CI,
-      CK,
-      CL,
-      CM,
-      CN,
-      CO,
-      CR,
-      CU,
-      CV,
-      CX,
-      CY,
-      CZ,
-      DE,
-      DJ,
-      DK,
-      DM,
-      DO,
-      DZ,
-      EC,
-      EE,
-      EG,
-      ER,
-      ES,
-      ET,
-      FI,
-      FJ,
-      FK,
-      FM,
-      FO,
-      FR,
-      GA,
-      GB,
-      GD,
-      GE,
-      GH,
-      GI,
-      GL,
-      GM,
-      GN,
-      GQ,
-      GR,
-      GT,
-      GU,
-      GW,
-      GY,
-      HK,
-      HN,
-      HR,
-      HT,
-      HU,
-      ID,
-      IE,
-      IL,
-      IM,
-      IN,
-      IQ,
-      IR,
-      IS,
-      IT,
-      JM,
-      JO,
-      JP,
-      KE,
-      KG,
-      KH,
-      KI,
-      KM,
-      KN,
-      KP,
-      KR,
-      KW,
-      KY,
-      KZ,
-      LA,
-      LB,
-      LC,
-      LI,
-      LK,
-      LR,
-      LS,
-      LT,
-      LU,
-      LV,
-      LY,
-      MA,
-      MC,
-      MD,
-      ME,
-      MF,
-      MG,
-      MH,
-      MK,
-      ML,
-      MM,
-      MN,
-      MO,
-      MP,
-      MR,
-      MS,
-      MT,
-      MU,
-      MV,
-      MW,
-      MX,
-      MY,
-      MZ,
-      NA,
-      NC,
-      NE,
-      NG,
-      NI,
-      NL,
-      NO,
-      NP,
-      NR,
-      NU,
-      NZ,
-      OM,
-      PA,
-      PE,
-      PF,
-      PG,
-      PH,
-      PK,
-      PL,
-      PM,
-      PN,
-      PR,
-      PT,
-      PW,
-      PY,
-      QA,
-      RO,
-      RS,
-      RU,
-      RW,
-      SA,
-      SB,
-      SC,
-      SD,
-      SE,
-      SG,
-      SH,
-      SI,
-      SK,
-      SL,
-      SM,
-      SN,
-      SO,
-      SR,
-      ST,
-      SV,
-      SY,
-      SZ,
-      TC,
-      TD,
-      TG,
-      TH,
-      TJ,
-      TK,
-      TL,
-      TM,
-      TN,
-      TO,
-      TR,
-      TT,
-      TV,
-      TW,
-      TZ,
-      UA,
-      UG,
-      US,
-      UY,
-      UZ,
-      VA,
-      VC,
-      VE,
-      VG,
-      VI,
-      VN,
-      VU,
-      WF,
-      WS,
-      YE,
-      YT,
-      ZA,
-      ZM,
-      ZW
+    val values = js.Object.freeze(
+      js.Array(
+        AD,
+        AE,
+        AF,
+        AG,
+        AI,
+        AL,
+        AM,
+        AN,
+        AO,
+        AQ,
+        AR,
+        AS,
+        AT,
+        AU,
+        AW,
+        AZ,
+        BA,
+        BB,
+        BD,
+        BE,
+        BF,
+        BG,
+        BH,
+        BI,
+        BJ,
+        BL,
+        BM,
+        BN,
+        BO,
+        BR,
+        BS,
+        BT,
+        BW,
+        BY,
+        BZ,
+        CA,
+        CC,
+        CD,
+        CF,
+        CG,
+        CH,
+        CI,
+        CK,
+        CL,
+        CM,
+        CN,
+        CO,
+        CR,
+        CU,
+        CV,
+        CX,
+        CY,
+        CZ,
+        DE,
+        DJ,
+        DK,
+        DM,
+        DO,
+        DZ,
+        EC,
+        EE,
+        EG,
+        ER,
+        ES,
+        ET,
+        FI,
+        FJ,
+        FK,
+        FM,
+        FO,
+        FR,
+        GA,
+        GB,
+        GD,
+        GE,
+        GH,
+        GI,
+        GL,
+        GM,
+        GN,
+        GQ,
+        GR,
+        GT,
+        GU,
+        GW,
+        GY,
+        HK,
+        HN,
+        HR,
+        HT,
+        HU,
+        ID,
+        IE,
+        IL,
+        IM,
+        IN,
+        IQ,
+        IR,
+        IS,
+        IT,
+        JM,
+        JO,
+        JP,
+        KE,
+        KG,
+        KH,
+        KI,
+        KM,
+        KN,
+        KP,
+        KR,
+        KW,
+        KY,
+        KZ,
+        LA,
+        LB,
+        LC,
+        LI,
+        LK,
+        LR,
+        LS,
+        LT,
+        LU,
+        LV,
+        LY,
+        MA,
+        MC,
+        MD,
+        ME,
+        MF,
+        MG,
+        MH,
+        MK,
+        ML,
+        MM,
+        MN,
+        MO,
+        MP,
+        MR,
+        MS,
+        MT,
+        MU,
+        MV,
+        MW,
+        MX,
+        MY,
+        MZ,
+        NA,
+        NC,
+        NE,
+        NG,
+        NI,
+        NL,
+        NO,
+        NP,
+        NR,
+        NU,
+        NZ,
+        OM,
+        PA,
+        PE,
+        PF,
+        PG,
+        PH,
+        PK,
+        PL,
+        PM,
+        PN,
+        PR,
+        PT,
+        PW,
+        PY,
+        QA,
+        RO,
+        RS,
+        RU,
+        RW,
+        SA,
+        SB,
+        SC,
+        SD,
+        SE,
+        SG,
+        SH,
+        SI,
+        SK,
+        SL,
+        SM,
+        SN,
+        SO,
+        SR,
+        ST,
+        SV,
+        SY,
+        SZ,
+        TC,
+        TD,
+        TG,
+        TH,
+        TJ,
+        TK,
+        TL,
+        TM,
+        TN,
+        TO,
+        TR,
+        TT,
+        TV,
+        TW,
+        TZ,
+        UA,
+        UG,
+        US,
+        UY,
+        UZ,
+        VA,
+        VC,
+        VE,
+        VG,
+        VI,
+        VN,
+        VU,
+        WF,
+        WS,
+        YE,
+        YT,
+        ZA,
+        ZM,
+        ZW
+      )
     )
   }
 
@@ -926,15 +928,17 @@ package route53domains {
     val RESERVED               = "RESERVED"
     val DONT_KNOW              = "DONT_KNOW"
 
-    val values = IndexedSeq(
-      AVAILABLE,
-      AVAILABLE_RESERVED,
-      AVAILABLE_PREORDER,
-      UNAVAILABLE,
-      UNAVAILABLE_PREMIUM,
-      UNAVAILABLE_RESTRICTED,
-      RESERVED,
-      DONT_KNOW
+    val values = js.Object.freeze(
+      js.Array(
+        AVAILABLE,
+        AVAILABLE_RESERVED,
+        AVAILABLE_PREORDER,
+        UNAVAILABLE,
+        UNAVAILABLE_PREMIUM,
+        UNAVAILABLE_RESTRICTED,
+        RESERVED,
+        DONT_KNOW
+      )
     )
   }
 
@@ -1142,33 +1146,35 @@ package route53domains {
     val UK_CONTACT_TYPE           = "UK_CONTACT_TYPE"
     val UK_COMPANY_NUMBER         = "UK_COMPANY_NUMBER"
 
-    val values = IndexedSeq(
-      DUNS_NUMBER,
-      BRAND_NUMBER,
-      BIRTH_DEPARTMENT,
-      BIRTH_DATE_IN_YYYY_MM_DD,
-      BIRTH_COUNTRY,
-      BIRTH_CITY,
-      DOCUMENT_NUMBER,
-      AU_ID_NUMBER,
-      AU_ID_TYPE,
-      CA_LEGAL_TYPE,
-      CA_BUSINESS_ENTITY_TYPE,
-      ES_IDENTIFICATION,
-      ES_IDENTIFICATION_TYPE,
-      ES_LEGAL_FORM,
-      FI_BUSINESS_NUMBER,
-      FI_ID_NUMBER,
-      FI_NATIONALITY,
-      FI_ORGANIZATION_TYPE,
-      IT_PIN,
-      IT_REGISTRANT_ENTITY_TYPE,
-      RU_PASSPORT_DATA,
-      SE_ID_NUMBER,
-      SG_ID_NUMBER,
-      VAT_NUMBER,
-      UK_CONTACT_TYPE,
-      UK_COMPANY_NUMBER
+    val values = js.Object.freeze(
+      js.Array(
+        DUNS_NUMBER,
+        BRAND_NUMBER,
+        BIRTH_DEPARTMENT,
+        BIRTH_DATE_IN_YYYY_MM_DD,
+        BIRTH_COUNTRY,
+        BIRTH_CITY,
+        DOCUMENT_NUMBER,
+        AU_ID_NUMBER,
+        AU_ID_TYPE,
+        CA_LEGAL_TYPE,
+        CA_BUSINESS_ENTITY_TYPE,
+        ES_IDENTIFICATION,
+        ES_IDENTIFICATION_TYPE,
+        ES_LEGAL_FORM,
+        FI_BUSINESS_NUMBER,
+        FI_ID_NUMBER,
+        FI_NATIONALITY,
+        FI_ORGANIZATION_TYPE,
+        IT_PIN,
+        IT_REGISTRANT_ENTITY_TYPE,
+        RU_PASSPORT_DATA,
+        SE_ID_NUMBER,
+        SG_ID_NUMBER,
+        VAT_NUMBER,
+        UK_CONTACT_TYPE,
+        UK_COMPANY_NUMBER
+      )
     )
   }
 
@@ -1573,7 +1579,7 @@ package route53domains {
     val SUCCESSFUL  = "SUCCESSFUL"
     val FAILED      = "FAILED"
 
-    val values = IndexedSeq(SUBMITTED, IN_PROGRESS, ERROR, SUCCESSFUL, FAILED)
+    val values = js.Object.freeze(js.Array(SUBMITTED, IN_PROGRESS, ERROR, SUCCESSFUL, FAILED))
   }
 
   /**
@@ -1623,23 +1629,25 @@ package route53domains {
     val RENEW_DOMAIN              = "RENEW_DOMAIN"
     val PUSH_DOMAIN               = "PUSH_DOMAIN"
 
-    val values = IndexedSeq(
-      REGISTER_DOMAIN,
-      DELETE_DOMAIN,
-      TRANSFER_IN_DOMAIN,
-      UPDATE_DOMAIN_CONTACT,
-      UPDATE_NAMESERVER,
-      CHANGE_PRIVACY_PROTECTION,
-      DOMAIN_LOCK,
-      ENABLE_AUTORENEW,
-      DISABLE_AUTORENEW,
-      ADD_DNSSEC,
-      REMOVE_DNSSEC,
-      EXPIRE_DOMAIN,
-      TRANSFER_OUT_DOMAIN,
-      CHANGE_DOMAIN_OWNER,
-      RENEW_DOMAIN,
-      PUSH_DOMAIN
+    val values = js.Object.freeze(
+      js.Array(
+        REGISTER_DOMAIN,
+        DELETE_DOMAIN,
+        TRANSFER_IN_DOMAIN,
+        UPDATE_DOMAIN_CONTACT,
+        UPDATE_NAMESERVER,
+        CHANGE_PRIVACY_PROTECTION,
+        DOMAIN_LOCK,
+        ENABLE_AUTORENEW,
+        DISABLE_AUTORENEW,
+        ADD_DNSSEC,
+        REMOVE_DNSSEC,
+        EXPIRE_DOMAIN,
+        TRANSFER_OUT_DOMAIN,
+        CHANGE_DOMAIN_OWNER,
+        RENEW_DOMAIN,
+        PUSH_DOMAIN
+      )
     )
   }
 
@@ -1648,7 +1656,7 @@ package route53domains {
     val DONE    = "DONE"
     val EXPIRED = "EXPIRED"
 
-    val values = IndexedSeq(PENDING, DONE, EXPIRED)
+    val values = js.Object.freeze(js.Array(PENDING, DONE, EXPIRED))
   }
 
   /**
@@ -1958,7 +1966,7 @@ package route53domains {
     val UNTRANSFERABLE = "UNTRANSFERABLE"
     val DONT_KNOW      = "DONT_KNOW"
 
-    val values = IndexedSeq(TRANSFERABLE, UNTRANSFERABLE, DONT_KNOW)
+    val values = js.Object.freeze(js.Array(TRANSFERABLE, UNTRANSFERABLE, DONT_KNOW))
   }
 
   /**
diff --git a/services/route53resolver/src/main/scala/facade/amazonaws/services/Route53Resolver.scala b/services/route53resolver/src/main/scala/facade/amazonaws/services/Route53Resolver.scala
index 5229d007f..0f1163d81 100644
--- a/services/route53resolver/src/main/scala/facade/amazonaws/services/Route53Resolver.scala
+++ b/services/route53resolver/src/main/scala/facade/amazonaws/services/Route53Resolver.scala
@@ -672,17 +672,19 @@ package route53resolver {
     val DELETING                  = "DELETING"
     val DELETE_FAILED_FAS_EXPIRED = "DELETE_FAILED_FAS_EXPIRED"
 
-    val values = IndexedSeq(
-      CREATING,
-      FAILED_CREATION,
-      ATTACHING,
-      ATTACHED,
-      REMAP_DETACHING,
-      REMAP_ATTACHING,
-      DETACHING,
-      FAILED_RESOURCE_GONE,
-      DELETING,
-      DELETE_FAILED_FAS_EXPIRED
+    val values = js.Object.freeze(
+      js.Array(
+        CREATING,
+        FAILED_CREATION,
+        ATTACHING,
+        ATTACHED,
+        REMAP_DETACHING,
+        REMAP_ATTACHING,
+        DETACHING,
+        FAILED_RESOURCE_GONE,
+        DELETING,
+        DELETE_FAILED_FAS_EXPIRED
+      )
     )
   }
 
@@ -1014,7 +1016,7 @@ package route53resolver {
     val INBOUND  = "INBOUND"
     val OUTBOUND = "OUTBOUND"
 
-    val values = IndexedSeq(INBOUND, OUTBOUND)
+    val values = js.Object.freeze(js.Array(INBOUND, OUTBOUND))
   }
 
   object ResolverEndpointStatusEnum {
@@ -1025,7 +1027,7 @@ package route53resolver {
     val ACTION_NEEDED   = "ACTION_NEEDED"
     val DELETING        = "DELETING"
 
-    val values = IndexedSeq(CREATING, OPERATIONAL, UPDATING, AUTO_RECOVERING, ACTION_NEEDED, DELETING)
+    val values = js.Object.freeze(js.Array(CREATING, OPERATIONAL, UPDATING, AUTO_RECOVERING, ACTION_NEEDED, DELETING))
   }
 
   /**
@@ -1119,7 +1121,7 @@ package route53resolver {
     val FAILED     = "FAILED"
     val OVERRIDDEN = "OVERRIDDEN"
 
-    val values = IndexedSeq(CREATING, COMPLETE, DELETING, FAILED, OVERRIDDEN)
+    val values = js.Object.freeze(js.Array(CREATING, COMPLETE, DELETING, FAILED, OVERRIDDEN))
   }
 
   /**
@@ -1152,7 +1154,7 @@ package route53resolver {
     val UPDATING = "UPDATING"
     val FAILED   = "FAILED"
 
-    val values = IndexedSeq(COMPLETE, DELETING, UPDATING, FAILED)
+    val values = js.Object.freeze(js.Array(COMPLETE, DELETING, UPDATING, FAILED))
   }
 
   object RuleTypeOptionEnum {
@@ -1160,7 +1162,7 @@ package route53resolver {
     val SYSTEM    = "SYSTEM"
     val RECURSIVE = "RECURSIVE"
 
-    val values = IndexedSeq(FORWARD, SYSTEM, RECURSIVE)
+    val values = js.Object.freeze(js.Array(FORWARD, SYSTEM, RECURSIVE))
   }
 
   object ShareStatusEnum {
@@ -1168,7 +1170,7 @@ package route53resolver {
     val SHARED_WITH_ME = "SHARED_WITH_ME"
     val SHARED_BY_ME   = "SHARED_BY_ME"
 
-    val values = IndexedSeq(NOT_SHARED, SHARED_WITH_ME, SHARED_BY_ME)
+    val values = js.Object.freeze(js.Array(NOT_SHARED, SHARED_WITH_ME, SHARED_BY_ME))
   }
 
   /**
diff --git a/services/s3/src/main/scala/facade/amazonaws/services/S3.scala b/services/s3/src/main/scala/facade/amazonaws/services/S3.scala
index 3fa7aa756..674000dcb 100644
--- a/services/s3/src/main/scala/facade/amazonaws/services/S3.scala
+++ b/services/s3/src/main/scala/facade/amazonaws/services/S3.scala
@@ -806,7 +806,7 @@ package s3 {
   object AnalyticsS3ExportFileFormatEnum {
     val CSV = "CSV"
 
-    val values = IndexedSeq(CSV)
+    val values = js.Object.freeze(js.Array(CSV))
   }
 
   /**
@@ -834,7 +834,7 @@ package s3 {
     val Enabled   = "Enabled"
     val Suspended = "Suspended"
 
-    val values = IndexedSeq(Enabled, Suspended)
+    val values = js.Object.freeze(js.Array(Enabled, Suspended))
   }
 
   object BucketCannedACLEnum {
@@ -843,7 +843,7 @@ package s3 {
     val `public-read-write`  = "public-read-write"
     val `authenticated-read` = "authenticated-read"
 
-    val values = IndexedSeq(`private`, `public-read`, `public-read-write`, `authenticated-read`)
+    val values = js.Object.freeze(js.Array(`private`, `public-read`, `public-read-write`, `authenticated-read`))
   }
 
   /**
@@ -879,18 +879,20 @@ package s3 {
     val `cn-north-1`     = "cn-north-1"
     val `eu-central-1`   = "eu-central-1"
 
-    val values = IndexedSeq(
-      EU,
-      `eu-west-1`,
-      `us-west-1`,
-      `us-west-2`,
-      `ap-south-1`,
-      `ap-southeast-1`,
-      `ap-southeast-2`,
-      `ap-northeast-1`,
-      `sa-east-1`,
-      `cn-north-1`,
-      `eu-central-1`
+    val values = js.Object.freeze(
+      js.Array(
+        EU,
+        `eu-west-1`,
+        `us-west-1`,
+        `us-west-2`,
+        `ap-south-1`,
+        `ap-southeast-1`,
+        `ap-southeast-2`,
+        `ap-northeast-1`,
+        `sa-east-1`,
+        `cn-north-1`,
+        `eu-central-1`
+      )
     )
   }
 
@@ -917,14 +919,14 @@ package s3 {
     val READ         = "READ"
     val WRITE        = "WRITE"
 
-    val values = IndexedSeq(FULL_CONTROL, READ, WRITE)
+    val values = js.Object.freeze(js.Array(FULL_CONTROL, READ, WRITE))
   }
 
   object BucketVersioningStatusEnum {
     val Enabled   = "Enabled"
     val Suspended = "Suspended"
 
-    val values = IndexedSeq(Enabled, Suspended)
+    val values = js.Object.freeze(js.Array(Enabled, Suspended))
   }
 
   /**
@@ -1205,7 +1207,7 @@ package s3 {
     val GZIP  = "GZIP"
     val BZIP2 = "BZIP2"
 
-    val values = IndexedSeq(NONE, GZIP, BZIP2)
+    val values = js.Object.freeze(js.Array(NONE, GZIP, BZIP2))
   }
 
   /**
@@ -1964,7 +1966,7 @@ package s3 {
     val Enabled  = "Enabled"
     val Disabled = "Disabled"
 
-    val values = IndexedSeq(Enabled, Disabled)
+    val values = js.Object.freeze(js.Array(Enabled, Disabled))
   }
 
   @js.native
@@ -2190,7 +2192,7 @@ package s3 {
   object EncodingTypeEnum {
     val url = "url"
 
-    val values = IndexedSeq(url)
+    val values = js.Object.freeze(js.Array(url))
   }
 
   /**
@@ -2315,18 +2317,20 @@ package s3 {
     val `s3:ObjectRestore:Post`                    = "s3:ObjectRestore:Post"
     val `s3:ObjectRestore:Completed`               = "s3:ObjectRestore:Completed"
 
-    val values = IndexedSeq(
-      `s3:ReducedRedundancyLostObject`,
-      `s3:ObjectCreated:*`,
-      `s3:ObjectCreated:Put`,
-      `s3:ObjectCreated:Post`,
-      `s3:ObjectCreated:Copy`,
-      `s3:ObjectCreated:CompleteMultipartUpload`,
-      `s3:ObjectRemoved:*`,
-      `s3:ObjectRemoved:Delete`,
-      `s3:ObjectRemoved:DeleteMarkerCreated`,
-      `s3:ObjectRestore:Post`,
-      `s3:ObjectRestore:Completed`
+    val values = js.Object.freeze(
+      js.Array(
+        `s3:ReducedRedundancyLostObject`,
+        `s3:ObjectCreated:*`,
+        `s3:ObjectCreated:Put`,
+        `s3:ObjectCreated:Post`,
+        `s3:ObjectCreated:Copy`,
+        `s3:ObjectCreated:CompleteMultipartUpload`,
+        `s3:ObjectRemoved:*`,
+        `s3:ObjectRemoved:Delete`,
+        `s3:ObjectRemoved:DeleteMarkerCreated`,
+        `s3:ObjectRestore:Post`,
+        `s3:ObjectRestore:Completed`
+      )
     )
   }
 
@@ -2334,13 +2338,13 @@ package s3 {
     val Enabled  = "Enabled"
     val Disabled = "Disabled"
 
-    val values = IndexedSeq(Enabled, Disabled)
+    val values = js.Object.freeze(js.Array(Enabled, Disabled))
   }
 
   object ExpressionTypeEnum {
     val SQL = "SQL"
 
-    val values = IndexedSeq(SQL)
+    val values = js.Object.freeze(js.Array(SQL))
   }
 
   object FileHeaderInfoEnum {
@@ -2348,7 +2352,7 @@ package s3 {
     val IGNORE = "IGNORE"
     val NONE   = "NONE"
 
-    val values = IndexedSeq(USE, IGNORE, NONE)
+    val values = js.Object.freeze(js.Array(USE, IGNORE, NONE))
   }
 
   /**
@@ -2376,7 +2380,7 @@ package s3 {
     val prefix = "prefix"
     val suffix = "suffix"
 
-    val values = IndexedSeq(prefix, suffix)
+    val values = js.Object.freeze(js.Array(prefix, suffix))
   }
 
   @js.native
@@ -3866,21 +3870,21 @@ package s3 {
     val ORC     = "ORC"
     val Parquet = "Parquet"
 
-    val values = IndexedSeq(CSV, ORC, Parquet)
+    val values = js.Object.freeze(js.Array(CSV, ORC, Parquet))
   }
 
   object InventoryFrequencyEnum {
     val Daily  = "Daily"
     val Weekly = "Weekly"
 
-    val values = IndexedSeq(Daily, Weekly)
+    val values = js.Object.freeze(js.Array(Daily, Weekly))
   }
 
   object InventoryIncludedObjectVersionsEnum {
     val All     = "All"
     val Current = "Current"
 
-    val values = IndexedSeq(All, Current)
+    val values = js.Object.freeze(js.Array(All, Current))
   }
 
   object InventoryOptionalFieldEnum {
@@ -3895,17 +3899,19 @@ package s3 {
     val ObjectLockMode            = "ObjectLockMode"
     val ObjectLockLegalHoldStatus = "ObjectLockLegalHoldStatus"
 
-    val values = IndexedSeq(
-      Size,
-      LastModifiedDate,
-      StorageClass,
-      ETag,
-      IsMultipartUploaded,
-      ReplicationStatus,
-      EncryptionStatus,
-      ObjectLockRetainUntilDate,
-      ObjectLockMode,
-      ObjectLockLegalHoldStatus
+    val values = js.Object.freeze(
+      js.Array(
+        Size,
+        LastModifiedDate,
+        StorageClass,
+        ETag,
+        IsMultipartUploaded,
+        ReplicationStatus,
+        EncryptionStatus,
+        ObjectLockRetainUntilDate,
+        ObjectLockMode,
+        ObjectLockLegalHoldStatus
+      )
     )
   }
 
@@ -4001,7 +4007,7 @@ package s3 {
     val DOCUMENT = "DOCUMENT"
     val LINES    = "LINES"
 
-    val values = IndexedSeq(DOCUMENT, LINES)
+    val values = js.Object.freeze(js.Array(DOCUMENT, LINES))
   }
 
   /**
@@ -4771,21 +4777,21 @@ package s3 {
     val Enabled  = "Enabled"
     val Disabled = "Disabled"
 
-    val values = IndexedSeq(Enabled, Disabled)
+    val values = js.Object.freeze(js.Array(Enabled, Disabled))
   }
 
   object MFADeleteStatusEnum {
     val Enabled  = "Enabled"
     val Disabled = "Disabled"
 
-    val values = IndexedSeq(Enabled, Disabled)
+    val values = js.Object.freeze(js.Array(Enabled, Disabled))
   }
 
   object MetadataDirectiveEnum {
     val COPY    = "COPY"
     val REPLACE = "REPLACE"
 
-    val values = IndexedSeq(COPY, REPLACE)
+    val values = js.Object.freeze(js.Array(COPY, REPLACE))
   }
 
   /**
@@ -5056,14 +5062,16 @@ package s3 {
     val `bucket-owner-read`         = "bucket-owner-read"
     val `bucket-owner-full-control` = "bucket-owner-full-control"
 
-    val values = IndexedSeq(
-      `private`,
-      `public-read`,
-      `public-read-write`,
-      `authenticated-read`,
-      `aws-exec-read`,
-      `bucket-owner-read`,
-      `bucket-owner-full-control`
+    val values = js.Object.freeze(
+      js.Array(
+        `private`,
+        `public-read`,
+        `public-read-write`,
+        `authenticated-read`,
+        `aws-exec-read`,
+        `bucket-owner-read`,
+        `bucket-owner-full-control`
+      )
     )
   }
 
@@ -5114,7 +5122,7 @@ package s3 {
   object ObjectLockEnabledEnum {
     val Enabled = "Enabled"
 
-    val values = IndexedSeq(Enabled)
+    val values = js.Object.freeze(js.Array(Enabled))
   }
 
   /**
@@ -5139,14 +5147,14 @@ package s3 {
     val ON  = "ON"
     val OFF = "OFF"
 
-    val values = IndexedSeq(ON, OFF)
+    val values = js.Object.freeze(js.Array(ON, OFF))
   }
 
   object ObjectLockModeEnum {
     val GOVERNANCE = "GOVERNANCE"
     val COMPLIANCE = "COMPLIANCE"
 
-    val values = IndexedSeq(GOVERNANCE, COMPLIANCE)
+    val values = js.Object.freeze(js.Array(GOVERNANCE, COMPLIANCE))
   }
 
   /**
@@ -5174,7 +5182,7 @@ package s3 {
     val GOVERNANCE = "GOVERNANCE"
     val COMPLIANCE = "COMPLIANCE"
 
-    val values = IndexedSeq(GOVERNANCE, COMPLIANCE)
+    val values = js.Object.freeze(js.Array(GOVERNANCE, COMPLIANCE))
   }
 
   /**
@@ -5204,8 +5212,9 @@ package s3 {
     val INTELLIGENT_TIERING = "INTELLIGENT_TIERING"
     val DEEP_ARCHIVE        = "DEEP_ARCHIVE"
 
-    val values =
-      IndexedSeq(STANDARD, REDUCED_REDUNDANCY, GLACIER, STANDARD_IA, ONEZONE_IA, INTELLIGENT_TIERING, DEEP_ARCHIVE)
+    val values = js.Object.freeze(
+      js.Array(STANDARD, REDUCED_REDUNDANCY, GLACIER, STANDARD_IA, ONEZONE_IA, INTELLIGENT_TIERING, DEEP_ARCHIVE)
+    )
   }
 
   /**
@@ -5250,7 +5259,7 @@ package s3 {
   object ObjectVersionStorageClassEnum {
     val STANDARD = "STANDARD"
 
-    val values = IndexedSeq(STANDARD)
+    val values = js.Object.freeze(js.Array(STANDARD))
   }
 
   /**
@@ -5316,7 +5325,7 @@ package s3 {
   object OwnerOverrideEnum {
     val Destination = "Destination"
 
-    val values = IndexedSeq(Destination)
+    val values = js.Object.freeze(js.Array(Destination))
   }
 
   /**
@@ -5365,7 +5374,7 @@ package s3 {
     val Requester   = "Requester"
     val BucketOwner = "BucketOwner"
 
-    val values = IndexedSeq(Requester, BucketOwner)
+    val values = js.Object.freeze(js.Array(Requester, BucketOwner))
   }
 
   object PermissionEnum {
@@ -5375,7 +5384,7 @@ package s3 {
     val READ         = "READ"
     val READ_ACP     = "READ_ACP"
 
-    val values = IndexedSeq(FULL_CONTROL, WRITE, WRITE_ACP, READ, READ_ACP)
+    val values = js.Object.freeze(js.Array(FULL_CONTROL, WRITE, WRITE_ACP, READ, READ_ACP))
   }
 
   /**
@@ -5442,7 +5451,7 @@ package s3 {
     val http  = "http"
     val https = "https"
 
-    val values = IndexedSeq(http, https)
+    val values = js.Object.freeze(js.Array(http, https))
   }
 
   /**
@@ -6382,7 +6391,7 @@ package s3 {
     val ALWAYS   = "ALWAYS"
     val ASNEEDED = "ASNEEDED"
 
-    val values = IndexedSeq(ALWAYS, ASNEEDED)
+    val values = js.Object.freeze(js.Array(ALWAYS, ASNEEDED))
   }
 
   /**
@@ -6569,7 +6578,7 @@ package s3 {
     val Enabled  = "Enabled"
     val Disabled = "Disabled"
 
-    val values = IndexedSeq(Enabled, Disabled)
+    val values = js.Object.freeze(js.Array(Enabled, Disabled))
   }
 
   object ReplicationStatusEnum {
@@ -6578,7 +6587,7 @@ package s3 {
     val FAILED   = "FAILED"
     val REPLICA  = "REPLICA"
 
-    val values = IndexedSeq(COMPLETE, PENDING, FAILED, REPLICA)
+    val values = js.Object.freeze(js.Array(COMPLETE, PENDING, FAILED, REPLICA))
   }
 
   /**
@@ -6587,7 +6596,7 @@ package s3 {
   object RequestChargedEnum {
     val requester = "requester"
 
-    val values = IndexedSeq(requester)
+    val values = js.Object.freeze(js.Array(requester))
   }
 
   /**
@@ -6596,7 +6605,7 @@ package s3 {
   object RequestPayerEnum {
     val requester = "requester"
 
-    val values = IndexedSeq(requester)
+    val values = js.Object.freeze(js.Array(requester))
   }
 
   /**
@@ -6723,7 +6732,7 @@ package s3 {
   object RestoreRequestTypeEnum {
     val SELECT = "SELECT"
 
-    val values = IndexedSeq(SELECT)
+    val values = js.Object.freeze(js.Array(SELECT))
   }
 
   /**
@@ -7011,7 +7020,7 @@ package s3 {
     val AES256    = "AES256"
     val `aws:kms` = "aws:kms"
 
-    val values = IndexedSeq(AES256, `aws:kms`)
+    val values = js.Object.freeze(js.Array(AES256, `aws:kms`))
   }
 
   /**
@@ -7119,7 +7128,7 @@ package s3 {
     val Enabled  = "Enabled"
     val Disabled = "Disabled"
 
-    val values = IndexedSeq(Enabled, Disabled)
+    val values = js.Object.freeze(js.Array(Enabled, Disabled))
   }
 
   /**
@@ -7173,8 +7182,9 @@ package s3 {
     val GLACIER             = "GLACIER"
     val DEEP_ARCHIVE        = "DEEP_ARCHIVE"
 
-    val values =
-      IndexedSeq(STANDARD, REDUCED_REDUNDANCY, STANDARD_IA, ONEZONE_IA, INTELLIGENT_TIERING, GLACIER, DEEP_ARCHIVE)
+    val values = js.Object.freeze(
+      js.Array(STANDARD, REDUCED_REDUNDANCY, STANDARD_IA, ONEZONE_IA, INTELLIGENT_TIERING, GLACIER, DEEP_ARCHIVE)
+    )
   }
 
   /**
@@ -7221,7 +7231,7 @@ package s3 {
   object StorageClassAnalysisSchemaVersionEnum {
     val V_1 = "V_1"
 
-    val values = IndexedSeq(V_1)
+    val values = js.Object.freeze(js.Array(V_1))
   }
 
   /**
@@ -7271,7 +7281,7 @@ package s3 {
     val COPY    = "COPY"
     val REPLACE = "REPLACE"
 
-    val values = IndexedSeq(COPY, REPLACE)
+    val values = js.Object.freeze(js.Array(COPY, REPLACE))
   }
 
   /**
@@ -7300,7 +7310,7 @@ package s3 {
     val Bulk      = "Bulk"
     val Expedited = "Expedited"
 
-    val values = IndexedSeq(Standard, Bulk, Expedited)
+    val values = js.Object.freeze(js.Array(Standard, Bulk, Expedited))
   }
 
   /**
@@ -7390,7 +7400,7 @@ package s3 {
     val INTELLIGENT_TIERING = "INTELLIGENT_TIERING"
     val DEEP_ARCHIVE        = "DEEP_ARCHIVE"
 
-    val values = IndexedSeq(GLACIER, STANDARD_IA, ONEZONE_IA, INTELLIGENT_TIERING, DEEP_ARCHIVE)
+    val values = js.Object.freeze(js.Array(GLACIER, STANDARD_IA, ONEZONE_IA, INTELLIGENT_TIERING, DEEP_ARCHIVE))
   }
 
   object TypeEnum {
@@ -7398,7 +7408,7 @@ package s3 {
     val AmazonCustomerByEmail = "AmazonCustomerByEmail"
     val Group                 = "Group"
 
-    val values = IndexedSeq(CanonicalUser, AmazonCustomerByEmail, Group)
+    val values = js.Object.freeze(js.Array(CanonicalUser, AmazonCustomerByEmail, Group))
   }
 
   @js.native
diff --git a/services/s3control/src/main/scala/facade/amazonaws/services/S3Control.scala b/services/s3control/src/main/scala/facade/amazonaws/services/S3Control.scala
index 4a9460136..ce9da80d3 100644
--- a/services/s3control/src/main/scala/facade/amazonaws/services/S3Control.scala
+++ b/services/s3control/src/main/scala/facade/amazonaws/services/S3Control.scala
@@ -395,14 +395,14 @@ package s3control {
     val Key       = "Key"
     val VersionId = "VersionId"
 
-    val values = IndexedSeq(Ignore, Bucket, Key, VersionId)
+    val values = js.Object.freeze(js.Array(Ignore, Bucket, Key, VersionId))
   }
 
   object JobManifestFormatEnum {
     val S3BatchOperations_CSV_20180820 = "S3BatchOperations_CSV_20180820"
     val S3InventoryReport_CSV_20161130 = "S3InventoryReport_CSV_20161130"
 
-    val values = IndexedSeq(S3BatchOperations_CSV_20180820, S3InventoryReport_CSV_20161130)
+    val values = js.Object.freeze(js.Array(S3BatchOperations_CSV_20180820, S3InventoryReport_CSV_20161130))
   }
 
   /**
@@ -543,14 +543,14 @@ package s3control {
   object JobReportFormatEnum {
     val Report_CSV_20180820 = "Report_CSV_20180820"
 
-    val values = IndexedSeq(Report_CSV_20180820)
+    val values = js.Object.freeze(js.Array(Report_CSV_20180820))
   }
 
   object JobReportScopeEnum {
     val AllTasks        = "AllTasks"
     val FailedTasksOnly = "FailedTasksOnly"
 
-    val values = IndexedSeq(AllTasks, FailedTasksOnly)
+    val values = js.Object.freeze(js.Array(AllTasks, FailedTasksOnly))
   }
 
   object JobStatusEnum {
@@ -568,20 +568,22 @@ package s3control {
     val Ready      = "Ready"
     val Suspended  = "Suspended"
 
-    val values = IndexedSeq(
-      Active,
-      Cancelled,
-      Cancelling,
-      Complete,
-      Completing,
-      Failed,
-      Failing,
-      New,
-      Paused,
-      Pausing,
-      Preparing,
-      Ready,
-      Suspended
+    val values = js.Object.freeze(
+      js.Array(
+        Active,
+        Cancelled,
+        Cancelling,
+        Complete,
+        Completing,
+        Failed,
+        Failing,
+        New,
+        Paused,
+        Pausing,
+        Preparing,
+        Ready,
+        Suspended
+      )
     )
   }
 
@@ -654,7 +656,9 @@ package s3control {
     val S3PutObjectTagging      = "S3PutObjectTagging"
     val S3InitiateRestoreObject = "S3InitiateRestoreObject"
 
-    val values = IndexedSeq(LambdaInvoke, S3PutObjectCopy, S3PutObjectAcl, S3PutObjectTagging, S3InitiateRestoreObject)
+    val values = js.Object.freeze(
+      js.Array(LambdaInvoke, S3PutObjectCopy, S3PutObjectAcl, S3PutObjectTagging, S3InitiateRestoreObject)
+    )
   }
 
   /**
@@ -708,7 +712,7 @@ package s3control {
     val Cancelled = "Cancelled"
     val Ready     = "Ready"
 
-    val values = IndexedSeq(Cancelled, Ready)
+    val values = js.Object.freeze(js.Array(Cancelled, Ready))
   }
 
   /**
@@ -764,14 +768,16 @@ package s3control {
     val `bucket-owner-read`         = "bucket-owner-read"
     val `bucket-owner-full-control` = "bucket-owner-full-control"
 
-    val values = IndexedSeq(
-      `private`,
-      `public-read`,
-      `public-read-write`,
-      `aws-exec-read`,
-      `authenticated-read`,
-      `bucket-owner-read`,
-      `bucket-owner-full-control`
+    val values = js.Object.freeze(
+      js.Array(
+        `private`,
+        `public-read`,
+        `public-read-write`,
+        `aws-exec-read`,
+        `authenticated-read`,
+        `bucket-owner-read`,
+        `bucket-owner-full-control`
+      )
     )
   }
 
@@ -842,7 +848,7 @@ package s3control {
     val BULK     = "BULK"
     val STANDARD = "STANDARD"
 
-    val values = IndexedSeq(BULK, STANDARD)
+    val values = js.Object.freeze(js.Array(BULK, STANDARD))
   }
 
   /**
@@ -895,7 +901,7 @@ package s3control {
     val emailAddress = "emailAddress"
     val uri          = "uri"
 
-    val values = IndexedSeq(id, emailAddress, uri)
+    val values = js.Object.freeze(js.Array(id, emailAddress, uri))
   }
 
   /**
@@ -923,21 +929,21 @@ package s3control {
     val COPY    = "COPY"
     val REPLACE = "REPLACE"
 
-    val values = IndexedSeq(COPY, REPLACE)
+    val values = js.Object.freeze(js.Array(COPY, REPLACE))
   }
 
   object S3ObjectLockLegalHoldStatusEnum {
     val OFF = "OFF"
     val ON  = "ON"
 
-    val values = IndexedSeq(OFF, ON)
+    val values = js.Object.freeze(js.Array(OFF, ON))
   }
 
   object S3ObjectLockModeEnum {
     val COMPLIANCE = "COMPLIANCE"
     val GOVERNANCE = "GOVERNANCE"
 
-    val values = IndexedSeq(COMPLIANCE, GOVERNANCE)
+    val values = js.Object.freeze(js.Array(COMPLIANCE, GOVERNANCE))
   }
 
   /**
@@ -1016,14 +1022,14 @@ package s3control {
     val READ_ACP     = "READ_ACP"
     val WRITE_ACP    = "WRITE_ACP"
 
-    val values = IndexedSeq(FULL_CONTROL, READ, WRITE, READ_ACP, WRITE_ACP)
+    val values = js.Object.freeze(js.Array(FULL_CONTROL, READ, WRITE, READ_ACP, WRITE_ACP))
   }
 
   object S3SSEAlgorithmEnum {
     val AES256 = "AES256"
     val KMS    = "KMS"
 
-    val values = IndexedSeq(AES256, KMS)
+    val values = js.Object.freeze(js.Array(AES256, KMS))
   }
 
   /**
@@ -1070,7 +1076,8 @@ package s3control {
     val INTELLIGENT_TIERING = "INTELLIGENT_TIERING"
     val DEEP_ARCHIVE        = "DEEP_ARCHIVE"
 
-    val values = IndexedSeq(STANDARD, STANDARD_IA, ONEZONE_IA, GLACIER, INTELLIGENT_TIERING, DEEP_ARCHIVE)
+    val values =
+      js.Object.freeze(js.Array(STANDARD, STANDARD_IA, ONEZONE_IA, GLACIER, INTELLIGENT_TIERING, DEEP_ARCHIVE))
   }
 
   /**
diff --git a/services/sagemaker/src/main/scala/facade/amazonaws/services/SageMaker.scala b/services/sagemaker/src/main/scala/facade/amazonaws/services/SageMaker.scala
index 366d2ca22..034fc40bf 100644
--- a/services/sagemaker/src/main/scala/facade/amazonaws/services/SageMaker.scala
+++ b/services/sagemaker/src/main/scala/facade/amazonaws/services/SageMaker.scala
@@ -602,7 +602,7 @@ package sagemaker {
     val Name         = "Name"
     val CreationTime = "CreationTime"
 
-    val values = IndexedSeq(Name, CreationTime)
+    val values = js.Object.freeze(js.Array(Name, CreationTime))
   }
 
   /**
@@ -642,7 +642,7 @@ package sagemaker {
     val Failed     = "Failed"
     val Deleting   = "Deleting"
 
-    val values = IndexedSeq(Pending, InProgress, Completed, Failed, Deleting)
+    val values = js.Object.freeze(js.Array(Pending, InProgress, Completed, Failed, Deleting))
   }
 
   /**
@@ -798,21 +798,21 @@ package sagemaker {
     val None = "None"
     val Line = "Line"
 
-    val values = IndexedSeq(None, Line)
+    val values = js.Object.freeze(js.Array(None, Line))
   }
 
   object BatchStrategyEnum {
     val MultiRecord  = "MultiRecord"
     val SingleRecord = "SingleRecord"
 
-    val values = IndexedSeq(MultiRecord, SingleRecord)
+    val values = js.Object.freeze(js.Array(MultiRecord, SingleRecord))
   }
 
   object BooleanOperatorEnum {
     val And = "And"
     val Or  = "Or"
 
-    val values = IndexedSeq(And, Or)
+    val values = js.Object.freeze(js.Array(And, Or))
   }
 
   /**
@@ -959,14 +959,14 @@ package sagemaker {
     val CreationTime     = "CreationTime"
     val LastModifiedTime = "LastModifiedTime"
 
-    val values = IndexedSeq(Name, CreationTime, LastModifiedTime)
+    val values = js.Object.freeze(js.Array(Name, CreationTime, LastModifiedTime))
   }
 
   object CodeRepositorySortOrderEnum {
     val Ascending  = "Ascending"
     val Descending = "Descending"
 
-    val values = IndexedSeq(Ascending, Descending)
+    val values = js.Object.freeze(js.Array(Ascending, Descending))
   }
 
   /**
@@ -1035,7 +1035,7 @@ package sagemaker {
     val STOPPING   = "STOPPING"
     val STOPPED    = "STOPPED"
 
-    val values = IndexedSeq(INPROGRESS, COMPLETED, FAILED, STARTING, STOPPING, STOPPED)
+    val values = js.Object.freeze(js.Array(INPROGRESS, COMPLETED, FAILED, STARTING, STOPPING, STOPPED))
   }
 
   /**
@@ -1083,7 +1083,7 @@ package sagemaker {
     val None = "None"
     val Gzip = "Gzip"
 
-    val values = IndexedSeq(None, Gzip)
+    val values = js.Object.freeze(js.Array(None, Gzip))
   }
 
   /**
@@ -1120,7 +1120,7 @@ package sagemaker {
     val FreeOfPersonallyIdentifiableInformation = "FreeOfPersonallyIdentifiableInformation"
     val FreeOfAdultContent                      = "FreeOfAdultContent"
 
-    val values = IndexedSeq(FreeOfPersonallyIdentifiableInformation, FreeOfAdultContent)
+    val values = js.Object.freeze(js.Array(FreeOfPersonallyIdentifiableInformation, FreeOfAdultContent))
   }
 
   /**
@@ -3201,7 +3201,7 @@ package sagemaker {
     val Completed  = "Completed"
     val Failed     = "Failed"
 
-    val values = IndexedSeq(NotStarted, InProgress, Completed, Failed)
+    val values = js.Object.freeze(js.Array(NotStarted, InProgress, Completed, Failed))
   }
 
   object DetailedModelPackageStatusEnum {
@@ -3210,21 +3210,21 @@ package sagemaker {
     val Completed  = "Completed"
     val Failed     = "Failed"
 
-    val values = IndexedSeq(NotStarted, InProgress, Completed, Failed)
+    val values = js.Object.freeze(js.Array(NotStarted, InProgress, Completed, Failed))
   }
 
   object DirectInternetAccessEnum {
     val Enabled  = "Enabled"
     val Disabled = "Disabled"
 
-    val values = IndexedSeq(Enabled, Disabled)
+    val values = js.Object.freeze(js.Array(Enabled, Disabled))
   }
 
   object EndpointConfigSortKeyEnum {
     val Name         = "Name"
     val CreationTime = "CreationTime"
 
-    val values = IndexedSeq(Name, CreationTime)
+    val values = js.Object.freeze(js.Array(Name, CreationTime))
   }
 
   /**
@@ -3258,7 +3258,7 @@ package sagemaker {
     val CreationTime = "CreationTime"
     val Status       = "Status"
 
-    val values = IndexedSeq(Name, CreationTime, Status)
+    val values = js.Object.freeze(js.Array(Name, CreationTime, Status))
   }
 
   object EndpointStatusEnum {
@@ -3271,7 +3271,9 @@ package sagemaker {
     val Deleting       = "Deleting"
     val Failed         = "Failed"
 
-    val values = IndexedSeq(OutOfService, Creating, Updating, SystemUpdating, RollingBack, InService, Deleting, Failed)
+    val values = js.Object.freeze(
+      js.Array(OutOfService, Creating, Updating, SystemUpdating, RollingBack, InService, Deleting, Failed)
+    )
   }
 
   /**
@@ -3310,7 +3312,7 @@ package sagemaker {
     val rw = "rw"
     val ro = "ro"
 
-    val values = IndexedSeq(rw, ro)
+    val values = js.Object.freeze(js.Array(rw, ro))
   }
 
   /**
@@ -3346,7 +3348,7 @@ package sagemaker {
     val EFS       = "EFS"
     val FSxLustre = "FSxLustre"
 
-    val values = IndexedSeq(EFS, FSxLustre)
+    val values = js.Object.freeze(js.Array(EFS, FSxLustre))
   }
 
   /**
@@ -3425,7 +3427,7 @@ package sagemaker {
     val PYTORCH    = "PYTORCH"
     val XGBOOST    = "XGBOOST"
 
-    val values = IndexedSeq(TENSORFLOW, MXNET, ONNX, PYTORCH, XGBOOST)
+    val values = js.Object.freeze(js.Array(TENSORFLOW, MXNET, ONNX, PYTORCH, XGBOOST))
   }
 
   @js.native
@@ -3597,7 +3599,7 @@ package sagemaker {
     val Logarithmic        = "Logarithmic"
     val ReverseLogarithmic = "ReverseLogarithmic"
 
-    val values = IndexedSeq(Auto, Linear, Logarithmic, ReverseLogarithmic)
+    val values = js.Object.freeze(js.Array(Auto, Linear, Logarithmic, ReverseLogarithmic))
   }
 
   /**
@@ -3809,7 +3811,7 @@ package sagemaker {
     val Maximize = "Maximize"
     val Minimize = "Minimize"
 
-    val values = IndexedSeq(Maximize, Minimize)
+    val values = js.Object.freeze(js.Array(Maximize, Minimize))
   }
 
   object HyperParameterTuningJobSortByOptionsEnum {
@@ -3817,7 +3819,7 @@ package sagemaker {
     val Status       = "Status"
     val CreationTime = "CreationTime"
 
-    val values = IndexedSeq(Name, Status, CreationTime)
+    val values = js.Object.freeze(js.Array(Name, Status, CreationTime))
   }
 
   object HyperParameterTuningJobStatusEnum {
@@ -3827,7 +3829,7 @@ package sagemaker {
     val Stopped    = "Stopped"
     val Stopping   = "Stopping"
 
-    val values = IndexedSeq(Completed, InProgress, Failed, Stopped, Stopping)
+    val values = js.Object.freeze(js.Array(Completed, InProgress, Failed, Stopped, Stopping))
   }
 
   /**
@@ -3837,7 +3839,7 @@ package sagemaker {
     val Bayesian = "Bayesian"
     val Random   = "Random"
 
-    val values = IndexedSeq(Bayesian, Random)
+    val values = js.Object.freeze(js.Array(Bayesian, Random))
   }
 
   /**
@@ -3917,7 +3919,7 @@ package sagemaker {
     val IdenticalDataAndAlgorithm = "IdenticalDataAndAlgorithm"
     val TransferLearning          = "TransferLearning"
 
-    val values = IndexedSeq(IdenticalDataAndAlgorithm, TransferLearning)
+    val values = js.Object.freeze(js.Array(IdenticalDataAndAlgorithm, TransferLearning))
   }
 
   /**
@@ -4018,45 +4020,47 @@ package sagemaker {
     val `ml.p3.8xlarge`   = "ml.p3.8xlarge"
     val `ml.p3.16xlarge`  = "ml.p3.16xlarge"
 
-    val values = IndexedSeq(
-      `ml.t2.medium`,
-      `ml.t2.large`,
-      `ml.t2.xlarge`,
-      `ml.t2.2xlarge`,
-      `ml.t3.medium`,
-      `ml.t3.large`,
-      `ml.t3.xlarge`,
-      `ml.t3.2xlarge`,
-      `ml.m4.xlarge`,
-      `ml.m4.2xlarge`,
-      `ml.m4.4xlarge`,
-      `ml.m4.10xlarge`,
-      `ml.m4.16xlarge`,
-      `ml.m5.xlarge`,
-      `ml.m5.2xlarge`,
-      `ml.m5.4xlarge`,
-      `ml.m5.12xlarge`,
-      `ml.m5.24xlarge`,
-      `ml.c4.xlarge`,
-      `ml.c4.2xlarge`,
-      `ml.c4.4xlarge`,
-      `ml.c4.8xlarge`,
-      `ml.c5.xlarge`,
-      `ml.c5.2xlarge`,
-      `ml.c5.4xlarge`,
-      `ml.c5.9xlarge`,
-      `ml.c5.18xlarge`,
-      `ml.c5d.xlarge`,
-      `ml.c5d.2xlarge`,
-      `ml.c5d.4xlarge`,
-      `ml.c5d.9xlarge`,
-      `ml.c5d.18xlarge`,
-      `ml.p2.xlarge`,
-      `ml.p2.8xlarge`,
-      `ml.p2.16xlarge`,
-      `ml.p3.2xlarge`,
-      `ml.p3.8xlarge`,
-      `ml.p3.16xlarge`
+    val values = js.Object.freeze(
+      js.Array(
+        `ml.t2.medium`,
+        `ml.t2.large`,
+        `ml.t2.xlarge`,
+        `ml.t2.2xlarge`,
+        `ml.t3.medium`,
+        `ml.t3.large`,
+        `ml.t3.xlarge`,
+        `ml.t3.2xlarge`,
+        `ml.m4.xlarge`,
+        `ml.m4.2xlarge`,
+        `ml.m4.4xlarge`,
+        `ml.m4.10xlarge`,
+        `ml.m4.16xlarge`,
+        `ml.m5.xlarge`,
+        `ml.m5.2xlarge`,
+        `ml.m5.4xlarge`,
+        `ml.m5.12xlarge`,
+        `ml.m5.24xlarge`,
+        `ml.c4.xlarge`,
+        `ml.c4.2xlarge`,
+        `ml.c4.4xlarge`,
+        `ml.c4.8xlarge`,
+        `ml.c5.xlarge`,
+        `ml.c5.2xlarge`,
+        `ml.c5.4xlarge`,
+        `ml.c5.9xlarge`,
+        `ml.c5.18xlarge`,
+        `ml.c5d.xlarge`,
+        `ml.c5d.2xlarge`,
+        `ml.c5d.4xlarge`,
+        `ml.c5d.9xlarge`,
+        `ml.c5d.18xlarge`,
+        `ml.p2.xlarge`,
+        `ml.p2.8xlarge`,
+        `ml.p2.16xlarge`,
+        `ml.p3.2xlarge`,
+        `ml.p3.8xlarge`,
+        `ml.p3.16xlarge`
+      )
     )
   }
 
@@ -4116,7 +4120,7 @@ package sagemaker {
     val Input = "Input"
     val None  = "None"
 
-    val values = IndexedSeq(Input, None)
+    val values = js.Object.freeze(js.Array(Input, None))
   }
 
   /**
@@ -4390,7 +4394,7 @@ package sagemaker {
     val Stopping   = "Stopping"
     val Stopped    = "Stopped"
 
-    val values = IndexedSeq(InProgress, Completed, Failed, Stopping, Stopped)
+    val values = js.Object.freeze(js.Array(InProgress, Completed, Failed, Stopping, Stopped))
   }
 
   /**
@@ -4650,7 +4654,7 @@ package sagemaker {
     val CreationTime = "CreationTime"
     val Status       = "Status"
 
-    val values = IndexedSeq(Name, CreationTime, Status)
+    val values = js.Object.freeze(js.Array(Name, CreationTime, Status))
   }
 
   @js.native
@@ -4891,7 +4895,7 @@ package sagemaker {
   object ListLabelingJobsForWorkteamSortByOptionsEnum {
     val CreationTime = "CreationTime"
 
-    val values = IndexedSeq(CreationTime)
+    val values = js.Object.freeze(js.Array(CreationTime))
   }
 
   @js.native
@@ -5503,7 +5507,7 @@ package sagemaker {
     val Name       = "Name"
     val CreateDate = "CreateDate"
 
-    val values = IndexedSeq(Name, CreateDate)
+    val values = js.Object.freeze(js.Array(Name, CreateDate))
   }
 
   /**
@@ -5627,7 +5631,7 @@ package sagemaker {
     val Name         = "Name"
     val CreationTime = "CreationTime"
 
-    val values = IndexedSeq(Name, CreationTime)
+    val values = js.Object.freeze(js.Array(Name, CreationTime))
   }
 
   object ModelPackageStatusEnum {
@@ -5637,7 +5641,7 @@ package sagemaker {
     val Failed     = "Failed"
     val Deleting   = "Deleting"
 
-    val values = IndexedSeq(Pending, InProgress, Completed, Failed, Deleting)
+    val values = js.Object.freeze(js.Array(Pending, InProgress, Completed, Failed, Deleting))
   }
 
   /**
@@ -5772,7 +5776,7 @@ package sagemaker {
     val Name         = "Name"
     val CreationTime = "CreationTime"
 
-    val values = IndexedSeq(Name, CreationTime)
+    val values = js.Object.freeze(js.Array(Name, CreationTime))
   }
 
   /**
@@ -5833,7 +5837,7 @@ package sagemaker {
     val `ml.eia1.large`  = "ml.eia1.large"
     val `ml.eia1.xlarge` = "ml.eia1.xlarge"
 
-    val values = IndexedSeq(`ml.eia1.medium`, `ml.eia1.large`, `ml.eia1.xlarge`)
+    val values = js.Object.freeze(js.Array(`ml.eia1.medium`, `ml.eia1.large`, `ml.eia1.xlarge`))
   }
 
   object NotebookInstanceLifecycleConfigSortKeyEnum {
@@ -5841,14 +5845,14 @@ package sagemaker {
     val CreationTime     = "CreationTime"
     val LastModifiedTime = "LastModifiedTime"
 
-    val values = IndexedSeq(Name, CreationTime, LastModifiedTime)
+    val values = js.Object.freeze(js.Array(Name, CreationTime, LastModifiedTime))
   }
 
   object NotebookInstanceLifecycleConfigSortOrderEnum {
     val Ascending  = "Ascending"
     val Descending = "Descending"
 
-    val values = IndexedSeq(Ascending, Descending)
+    val values = js.Object.freeze(js.Array(Ascending, Descending))
   }
 
   /**
@@ -5908,14 +5912,14 @@ package sagemaker {
     val CreationTime = "CreationTime"
     val Status       = "Status"
 
-    val values = IndexedSeq(Name, CreationTime, Status)
+    val values = js.Object.freeze(js.Array(Name, CreationTime, Status))
   }
 
   object NotebookInstanceSortOrderEnum {
     val Ascending  = "Ascending"
     val Descending = "Descending"
 
-    val values = IndexedSeq(Ascending, Descending)
+    val values = js.Object.freeze(js.Array(Ascending, Descending))
   }
 
   object NotebookInstanceStatusEnum {
@@ -5927,7 +5931,7 @@ package sagemaker {
     val Deleting  = "Deleting"
     val Updating  = "Updating"
 
-    val values = IndexedSeq(Pending, InService, Stopping, Stopped, Failed, Deleting, Updating)
+    val values = js.Object.freeze(js.Array(Pending, InService, Stopping, Stopped, Failed, Deleting, Updating))
   }
 
   /**
@@ -6002,7 +6006,7 @@ package sagemaker {
     val Pending   = "Pending"
     val Failed    = "Failed"
 
-    val values = IndexedSeq(Succeeded, Pending, Failed)
+    val values = js.Object.freeze(js.Array(Succeeded, Pending, Failed))
   }
 
   /**
@@ -6038,14 +6042,16 @@ package sagemaker {
     val LessThanOrEqualTo    = "LessThanOrEqualTo"
     val Contains             = "Contains"
 
-    val values = IndexedSeq(Equals, NotEquals, GreaterThan, GreaterThanOrEqualTo, LessThan, LessThanOrEqualTo, Contains)
+    val values = js.Object.freeze(
+      js.Array(Equals, NotEquals, GreaterThan, GreaterThanOrEqualTo, LessThan, LessThanOrEqualTo, Contains)
+    )
   }
 
   object OrderKeyEnum {
     val Ascending  = "Ascending"
     val Descending = "Descending"
 
-    val values = IndexedSeq(Ascending, Descending)
+    val values = js.Object.freeze(js.Array(Ascending, Descending))
   }
 
   /**
@@ -6156,7 +6162,7 @@ package sagemaker {
     val Categorical = "Categorical"
     val FreeText    = "FreeText"
 
-    val values = IndexedSeq(Integer, Continuous, Categorical, FreeText)
+    val values = js.Object.freeze(js.Array(Integer, Continuous, Categorical, FreeText))
   }
 
   /**
@@ -6217,7 +6223,7 @@ package sagemaker {
     val `ml.eia1.large`  = "ml.eia1.large"
     val `ml.eia1.xlarge` = "ml.eia1.xlarge"
 
-    val values = IndexedSeq(`ml.eia1.medium`, `ml.eia1.large`, `ml.eia1.xlarge`)
+    val values = js.Object.freeze(js.Array(`ml.eia1.medium`, `ml.eia1.large`, `ml.eia1.xlarge`))
   }
 
   object ProductionVariantInstanceTypeEnum {
@@ -6254,39 +6260,41 @@ package sagemaker {
     val `ml.c5.9xlarge`  = "ml.c5.9xlarge"
     val `ml.c5.18xlarge` = "ml.c5.18xlarge"
 
-    val values = IndexedSeq(
-      `ml.t2.medium`,
-      `ml.t2.large`,
-      `ml.t2.xlarge`,
-      `ml.t2.2xlarge`,
-      `ml.m4.xlarge`,
-      `ml.m4.2xlarge`,
-      `ml.m4.4xlarge`,
-      `ml.m4.10xlarge`,
-      `ml.m4.16xlarge`,
-      `ml.m5.large`,
-      `ml.m5.xlarge`,
-      `ml.m5.2xlarge`,
-      `ml.m5.4xlarge`,
-      `ml.m5.12xlarge`,
-      `ml.m5.24xlarge`,
-      `ml.c4.large`,
-      `ml.c4.xlarge`,
-      `ml.c4.2xlarge`,
-      `ml.c4.4xlarge`,
-      `ml.c4.8xlarge`,
-      `ml.p2.xlarge`,
-      `ml.p2.8xlarge`,
-      `ml.p2.16xlarge`,
-      `ml.p3.2xlarge`,
-      `ml.p3.8xlarge`,
-      `ml.p3.16xlarge`,
-      `ml.c5.large`,
-      `ml.c5.xlarge`,
-      `ml.c5.2xlarge`,
-      `ml.c5.4xlarge`,
-      `ml.c5.9xlarge`,
-      `ml.c5.18xlarge`
+    val values = js.Object.freeze(
+      js.Array(
+        `ml.t2.medium`,
+        `ml.t2.large`,
+        `ml.t2.xlarge`,
+        `ml.t2.2xlarge`,
+        `ml.m4.xlarge`,
+        `ml.m4.2xlarge`,
+        `ml.m4.4xlarge`,
+        `ml.m4.10xlarge`,
+        `ml.m4.16xlarge`,
+        `ml.m5.large`,
+        `ml.m5.xlarge`,
+        `ml.m5.2xlarge`,
+        `ml.m5.4xlarge`,
+        `ml.m5.12xlarge`,
+        `ml.m5.24xlarge`,
+        `ml.c4.large`,
+        `ml.c4.xlarge`,
+        `ml.c4.2xlarge`,
+        `ml.c4.4xlarge`,
+        `ml.c4.8xlarge`,
+        `ml.p2.xlarge`,
+        `ml.p2.8xlarge`,
+        `ml.p2.16xlarge`,
+        `ml.p3.2xlarge`,
+        `ml.p3.8xlarge`,
+        `ml.p3.16xlarge`,
+        `ml.c5.large`,
+        `ml.c5.xlarge`,
+        `ml.c5.2xlarge`,
+        `ml.c5.4xlarge`,
+        `ml.c5.9xlarge`,
+        `ml.c5.18xlarge`
+      )
     )
   }
 
@@ -6422,7 +6430,7 @@ package sagemaker {
     val None     = "None"
     val RecordIO = "RecordIO"
 
-    val values = IndexedSeq(None, RecordIO)
+    val values = js.Object.freeze(js.Array(None, RecordIO))
   }
 
   @js.native
@@ -6566,21 +6574,21 @@ package sagemaker {
   object ResourceTypeEnum {
     val TrainingJob = "TrainingJob"
 
-    val values = IndexedSeq(TrainingJob)
+    val values = js.Object.freeze(js.Array(TrainingJob))
   }
 
   object RootAccessEnum {
     val Enabled  = "Enabled"
     val Disabled = "Disabled"
 
-    val values = IndexedSeq(Enabled, Disabled)
+    val values = js.Object.freeze(js.Array(Enabled, Disabled))
   }
 
   object S3DataDistributionEnum {
     val FullyReplicated = "FullyReplicated"
     val ShardedByS3Key  = "ShardedByS3Key"
 
-    val values = IndexedSeq(FullyReplicated, ShardedByS3Key)
+    val values = js.Object.freeze(js.Array(FullyReplicated, ShardedByS3Key))
   }
 
   /**
@@ -6617,7 +6625,7 @@ package sagemaker {
     val S3Prefix              = "S3Prefix"
     val AugmentedManifestFile = "AugmentedManifestFile"
 
-    val values = IndexedSeq(ManifestFile, S3Prefix, AugmentedManifestFile)
+    val values = js.Object.freeze(js.Array(ManifestFile, S3Prefix, AugmentedManifestFile))
   }
 
   /**
@@ -6724,7 +6732,7 @@ package sagemaker {
     val Ascending  = "Ascending"
     val Descending = "Descending"
 
-    val values = IndexedSeq(Ascending, Descending)
+    val values = js.Object.freeze(js.Array(Ascending, Descending))
   }
 
   object SecondaryStatusEnum {
@@ -6743,21 +6751,23 @@ package sagemaker {
     val Interrupted              = "Interrupted"
     val MaxWaitTimeExceeded      = "MaxWaitTimeExceeded"
 
-    val values = IndexedSeq(
-      Starting,
-      LaunchingMLInstances,
-      PreparingTrainingStack,
-      Downloading,
-      DownloadingTrainingImage,
-      Training,
-      Uploading,
-      Stopping,
-      Stopped,
-      MaxRuntimeExceeded,
-      Completed,
-      Failed,
-      Interrupted,
-      MaxWaitTimeExceeded
+    val values = js.Object.freeze(
+      js.Array(
+        Starting,
+        LaunchingMLInstances,
+        PreparingTrainingStack,
+        Downloading,
+        DownloadingTrainingImage,
+        Training,
+        Uploading,
+        Stopping,
+        Stopped,
+        MaxRuntimeExceeded,
+        Completed,
+        Failed,
+        Interrupted,
+        MaxWaitTimeExceeded
+      )
     )
   }
 
@@ -6817,14 +6827,14 @@ package sagemaker {
     val CreationTime = "CreationTime"
     val Status       = "Status"
 
-    val values = IndexedSeq(Name, CreationTime, Status)
+    val values = js.Object.freeze(js.Array(Name, CreationTime, Status))
   }
 
   object SortOrderEnum {
     val Ascending  = "Ascending"
     val Descending = "Descending"
 
-    val values = IndexedSeq(Ascending, Descending)
+    val values = js.Object.freeze(js.Array(Ascending, Descending))
   }
 
   /**
@@ -6876,7 +6886,7 @@ package sagemaker {
     val RecordIO = "RecordIO"
     val TFRecord = "TFRecord"
 
-    val values = IndexedSeq(None, Line, RecordIO, TFRecord)
+    val values = js.Object.freeze(js.Array(None, Line, RecordIO, TFRecord))
   }
 
   @js.native
@@ -7116,25 +7126,27 @@ package sagemaker {
     val qcs605      = "qcs605"
     val qcs603      = "qcs603"
 
-    val values = IndexedSeq(
-      lambda,
-      ml_m4,
-      ml_m5,
-      ml_c4,
-      ml_c5,
-      ml_p2,
-      ml_p3,
-      jetson_tx1,
-      jetson_tx2,
-      jetson_nano,
-      rasp3b,
-      deeplens,
-      rk3399,
-      rk3288,
-      aisage,
-      sbe_c,
-      qcs605,
-      qcs603
+    val values = js.Object.freeze(
+      js.Array(
+        lambda,
+        ml_m4,
+        ml_m5,
+        ml_c4,
+        ml_c5,
+        ml_p2,
+        ml_p3,
+        jetson_tx1,
+        jetson_tx2,
+        jetson_nano,
+        rasp3b,
+        deeplens,
+        rk3399,
+        rk3288,
+        aisage,
+        sbe_c,
+        qcs605,
+        qcs603
+      )
     )
   }
 
@@ -7142,7 +7154,7 @@ package sagemaker {
     val Pipe = "Pipe"
     val File = "File"
 
-    val values = IndexedSeq(Pipe, File)
+    val values = js.Object.freeze(js.Array(Pipe, File))
   }
 
   object TrainingInstanceTypeEnum {
@@ -7174,34 +7186,36 @@ package sagemaker {
     val `ml.c5.18xlarge`   = "ml.c5.18xlarge"
     val `ml.p3dn.24xlarge` = "ml.p3dn.24xlarge"
 
-    val values = IndexedSeq(
-      `ml.m4.xlarge`,
-      `ml.m4.2xlarge`,
-      `ml.m4.4xlarge`,
-      `ml.m4.10xlarge`,
-      `ml.m4.16xlarge`,
-      `ml.m5.large`,
-      `ml.m5.xlarge`,
-      `ml.m5.2xlarge`,
-      `ml.m5.4xlarge`,
-      `ml.m5.12xlarge`,
-      `ml.m5.24xlarge`,
-      `ml.c4.xlarge`,
-      `ml.c4.2xlarge`,
-      `ml.c4.4xlarge`,
-      `ml.c4.8xlarge`,
-      `ml.p2.xlarge`,
-      `ml.p2.8xlarge`,
-      `ml.p2.16xlarge`,
-      `ml.p3.2xlarge`,
-      `ml.p3.8xlarge`,
-      `ml.p3.16xlarge`,
-      `ml.c5.xlarge`,
-      `ml.c5.2xlarge`,
-      `ml.c5.4xlarge`,
-      `ml.c5.9xlarge`,
-      `ml.c5.18xlarge`,
-      `ml.p3dn.24xlarge`
+    val values = js.Object.freeze(
+      js.Array(
+        `ml.m4.xlarge`,
+        `ml.m4.2xlarge`,
+        `ml.m4.4xlarge`,
+        `ml.m4.10xlarge`,
+        `ml.m4.16xlarge`,
+        `ml.m5.large`,
+        `ml.m5.xlarge`,
+        `ml.m5.2xlarge`,
+        `ml.m5.4xlarge`,
+        `ml.m5.12xlarge`,
+        `ml.m5.24xlarge`,
+        `ml.c4.xlarge`,
+        `ml.c4.2xlarge`,
+        `ml.c4.4xlarge`,
+        `ml.c4.8xlarge`,
+        `ml.p2.xlarge`,
+        `ml.p2.8xlarge`,
+        `ml.p2.16xlarge`,
+        `ml.p3.2xlarge`,
+        `ml.p3.8xlarge`,
+        `ml.p3.16xlarge`,
+        `ml.c5.xlarge`,
+        `ml.c5.2xlarge`,
+        `ml.c5.4xlarge`,
+        `ml.c5.9xlarge`,
+        `ml.c5.18xlarge`,
+        `ml.p3dn.24xlarge`
+      )
     )
   }
 
@@ -7336,7 +7350,7 @@ package sagemaker {
     val Off  = "Off"
     val Auto = "Auto"
 
-    val values = IndexedSeq(Off, Auto)
+    val values = js.Object.freeze(js.Array(Off, Auto))
   }
 
   object TrainingJobSortByOptionsEnum {
@@ -7345,7 +7359,7 @@ package sagemaker {
     val Status                    = "Status"
     val FinalObjectiveMetricValue = "FinalObjectiveMetricValue"
 
-    val values = IndexedSeq(Name, CreationTime, Status, FinalObjectiveMetricValue)
+    val values = js.Object.freeze(js.Array(Name, CreationTime, Status, FinalObjectiveMetricValue))
   }
 
   object TrainingJobStatusEnum {
@@ -7355,7 +7369,7 @@ package sagemaker {
     val Stopping   = "Stopping"
     val Stopped    = "Stopped"
 
-    val values = IndexedSeq(InProgress, Completed, Failed, Stopping, Stopped)
+    val values = js.Object.freeze(js.Array(InProgress, Completed, Failed, Stopping, Stopped))
   }
 
   /**
@@ -7543,33 +7557,35 @@ package sagemaker {
     val `ml.m5.12xlarge` = "ml.m5.12xlarge"
     val `ml.m5.24xlarge` = "ml.m5.24xlarge"
 
-    val values = IndexedSeq(
-      `ml.m4.xlarge`,
-      `ml.m4.2xlarge`,
-      `ml.m4.4xlarge`,
-      `ml.m4.10xlarge`,
-      `ml.m4.16xlarge`,
-      `ml.c4.xlarge`,
-      `ml.c4.2xlarge`,
-      `ml.c4.4xlarge`,
-      `ml.c4.8xlarge`,
-      `ml.p2.xlarge`,
-      `ml.p2.8xlarge`,
-      `ml.p2.16xlarge`,
-      `ml.p3.2xlarge`,
-      `ml.p3.8xlarge`,
-      `ml.p3.16xlarge`,
-      `ml.c5.xlarge`,
-      `ml.c5.2xlarge`,
-      `ml.c5.4xlarge`,
-      `ml.c5.9xlarge`,
-      `ml.c5.18xlarge`,
-      `ml.m5.large`,
-      `ml.m5.xlarge`,
-      `ml.m5.2xlarge`,
-      `ml.m5.4xlarge`,
-      `ml.m5.12xlarge`,
-      `ml.m5.24xlarge`
+    val values = js.Object.freeze(
+      js.Array(
+        `ml.m4.xlarge`,
+        `ml.m4.2xlarge`,
+        `ml.m4.4xlarge`,
+        `ml.m4.10xlarge`,
+        `ml.m4.16xlarge`,
+        `ml.c4.xlarge`,
+        `ml.c4.2xlarge`,
+        `ml.c4.4xlarge`,
+        `ml.c4.8xlarge`,
+        `ml.p2.xlarge`,
+        `ml.p2.8xlarge`,
+        `ml.p2.16xlarge`,
+        `ml.p3.2xlarge`,
+        `ml.p3.8xlarge`,
+        `ml.p3.16xlarge`,
+        `ml.c5.xlarge`,
+        `ml.c5.2xlarge`,
+        `ml.c5.4xlarge`,
+        `ml.c5.9xlarge`,
+        `ml.c5.18xlarge`,
+        `ml.m5.large`,
+        `ml.m5.xlarge`,
+        `ml.m5.2xlarge`,
+        `ml.m5.4xlarge`,
+        `ml.m5.12xlarge`,
+        `ml.m5.24xlarge`
+      )
     )
   }
 
@@ -7618,7 +7634,7 @@ package sagemaker {
     val Stopping   = "Stopping"
     val Stopped    = "Stopped"
 
-    val values = IndexedSeq(InProgress, Completed, Failed, Stopping, Stopped)
+    val values = js.Object.freeze(js.Array(InProgress, Completed, Failed, Stopping, Stopped))
   }
 
   /**
diff --git a/services/securityhub/src/main/scala/facade/amazonaws/services/SecurityHub.scala b/services/securityhub/src/main/scala/facade/amazonaws/services/SecurityHub.scala
index a1f65f683..8821fb90b 100644
--- a/services/securityhub/src/main/scala/facade/amazonaws/services/SecurityHub.scala
+++ b/services/securityhub/src/main/scala/facade/amazonaws/services/SecurityHub.scala
@@ -356,7 +356,7 @@ package securityhub {
     val Active   = "Active"
     val Inactive = "Inactive"
 
-    val values = IndexedSeq(Active, Inactive)
+    val values = js.Object.freeze(js.Array(Active, Inactive))
   }
 
   /**
@@ -909,7 +909,7 @@ package securityhub {
     val FAILED        = "FAILED"
     val NOT_AVAILABLE = "NOT_AVAILABLE"
 
-    val values = IndexedSeq(PASSED, WARNING, FAILED, NOT_AVAILABLE)
+    val values = js.Object.freeze(js.Array(PASSED, WARNING, FAILED, NOT_AVAILABLE))
   }
 
   /**
@@ -1097,7 +1097,7 @@ package securityhub {
   object DateRangeUnitEnum {
     val DAYS = "DAYS"
 
-    val values = IndexedSeq(DAYS)
+    val values = js.Object.freeze(js.Array(DAYS))
   }
 
   @js.native
@@ -2158,7 +2158,7 @@ package securityhub {
     val REMOVAL_FAILED = "REMOVAL_FAILED"
     val REMOVED        = "REMOVED"
 
-    val values = IndexedSeq(OBSERVED, REMOVAL_FAILED, REMOVED)
+    val values = js.Object.freeze(js.Array(OBSERVED, REMOVAL_FAILED, REMOVED))
   }
 
   object MalwareTypeEnum {
@@ -2178,22 +2178,24 @@ package securityhub {
     val VIRUS                = "VIRUS"
     val WORM                 = "WORM"
 
-    val values = IndexedSeq(
-      ADWARE,
-      BLENDED_THREAT,
-      BOTNET_AGENT,
-      COIN_MINER,
-      EXPLOIT_KIT,
-      KEYLOGGER,
-      MACRO,
-      POTENTIALLY_UNWANTED,
-      SPYWARE,
-      RANSOMWARE,
-      REMOTE_ACCESS,
-      ROOTKIT,
-      TROJAN,
-      VIRUS,
-      WORM
+    val values = js.Object.freeze(
+      js.Array(
+        ADWARE,
+        BLENDED_THREAT,
+        BOTNET_AGENT,
+        COIN_MINER,
+        EXPLOIT_KIT,
+        KEYLOGGER,
+        MACRO,
+        POTENTIALLY_UNWANTED,
+        SPYWARE,
+        RANSOMWARE,
+        REMOTE_ACCESS,
+        ROOTKIT,
+        TROJAN,
+        VIRUS,
+        WORM
+      )
     )
   }
 
@@ -2224,7 +2226,7 @@ package securityhub {
   object MapFilterComparisonEnum {
     val EQUALS = "EQUALS"
 
-    val values = IndexedSeq(EQUALS)
+    val values = js.Object.freeze(js.Array(EQUALS))
   }
 
   /**
@@ -2312,7 +2314,7 @@ package securityhub {
     val IN  = "IN"
     val OUT = "OUT"
 
-    val values = IndexedSeq(IN, OUT)
+    val values = js.Object.freeze(js.Array(IN, OUT))
   }
 
   /**
@@ -2393,7 +2395,7 @@ package securityhub {
     val `aws-cn`     = "aws-cn"
     val `aws-us-gov` = "aws-us-gov"
 
-    val values = IndexedSeq(aws, `aws-cn`, `aws-us-gov`)
+    val values = js.Object.freeze(js.Array(aws, `aws-cn`, `aws-us-gov`))
   }
 
   /**
@@ -2497,7 +2499,7 @@ package securityhub {
     val ACTIVE   = "ACTIVE"
     val ARCHIVED = "ARCHIVED"
 
-    val values = IndexedSeq(ACTIVE, ARCHIVED)
+    val values = js.Object.freeze(js.Array(ACTIVE, ARCHIVED))
   }
 
   /**
@@ -2675,7 +2677,7 @@ package securityhub {
     val asc  = "asc"
     val desc = "desc"
 
-    val values = IndexedSeq(asc, desc)
+    val values = js.Object.freeze(js.Array(asc, desc))
   }
 
   object StandardsStatusEnum {
@@ -2685,7 +2687,7 @@ package securityhub {
     val DELETING   = "DELETING"
     val INCOMPLETE = "INCOMPLETE"
 
-    val values = IndexedSeq(PENDING, READY, FAILED, DELETING, INCOMPLETE)
+    val values = js.Object.freeze(js.Array(PENDING, READY, FAILED, DELETING, INCOMPLETE))
   }
 
   /**
@@ -2765,7 +2767,7 @@ package securityhub {
     val EQUALS = "EQUALS"
     val PREFIX = "PREFIX"
 
-    val values = IndexedSeq(EQUALS, PREFIX)
+    val values = js.Object.freeze(js.Array(EQUALS, PREFIX))
   }
 
   @js.native
@@ -2841,7 +2843,8 @@ package securityhub {
     val EXPLOIT_SITE        = "EXPLOIT_SITE"
     val KEYLOGGER           = "KEYLOGGER"
 
-    val values = IndexedSeq(BACKDOOR, CARD_STEALER, COMMAND_AND_CONTROL, DROP_SITE, EXPLOIT_SITE, KEYLOGGER)
+    val values =
+      js.Object.freeze(js.Array(BACKDOOR, CARD_STEALER, COMMAND_AND_CONTROL, DROP_SITE, EXPLOIT_SITE, KEYLOGGER))
   }
 
   object ThreatIntelIndicatorTypeEnum {
@@ -2857,18 +2860,20 @@ package securityhub {
     val PROCESS       = "PROCESS"
     val URL           = "URL"
 
-    val values = IndexedSeq(
-      DOMAIN,
-      EMAIL_ADDRESS,
-      HASH_MD5,
-      HASH_SHA1,
-      HASH_SHA256,
-      HASH_SHA512,
-      IPV4_ADDRESS,
-      IPV6_ADDRESS,
-      MUTEX,
-      PROCESS,
-      URL
+    val values = js.Object.freeze(
+      js.Array(
+        DOMAIN,
+        EMAIL_ADDRESS,
+        HASH_MD5,
+        HASH_SHA1,
+        HASH_SHA256,
+        HASH_SHA512,
+        IPV4_ADDRESS,
+        IPV6_ADDRESS,
+        MUTEX,
+        PROCESS,
+        URL
+      )
     )
   }
 
@@ -3018,7 +3023,7 @@ package securityhub {
     val FALSE_POSITIVE  = "FALSE_POSITIVE"
     val BENIGN_POSITIVE = "BENIGN_POSITIVE"
 
-    val values = IndexedSeq(UNKNOWN, TRUE_POSITIVE, FALSE_POSITIVE, BENIGN_POSITIVE)
+    val values = js.Object.freeze(js.Array(UNKNOWN, TRUE_POSITIVE, FALSE_POSITIVE, BENIGN_POSITIVE))
   }
 
   object WorkflowStateEnum {
@@ -3028,6 +3033,6 @@ package securityhub {
     val DEFERRED    = "DEFERRED"
     val RESOLVED    = "RESOLVED"
 
-    val values = IndexedSeq(NEW, ASSIGNED, IN_PROGRESS, DEFERRED, RESOLVED)
+    val values = js.Object.freeze(js.Array(NEW, ASSIGNED, IN_PROGRESS, DEFERRED, RESOLVED))
   }
 }
diff --git a/services/serverlessapplicationrepository/src/main/scala/facade/amazonaws/services/ServerlessApplicationRepository.scala b/services/serverlessapplicationrepository/src/main/scala/facade/amazonaws/services/ServerlessApplicationRepository.scala
index b316842a8..841746575 100644
--- a/services/serverlessapplicationrepository/src/main/scala/facade/amazonaws/services/ServerlessApplicationRepository.scala
+++ b/services/serverlessapplicationrepository/src/main/scala/facade/amazonaws/services/ServerlessApplicationRepository.scala
@@ -191,7 +191,9 @@ package serverlessapplicationrepository {
     val CAPABILITY_AUTO_EXPAND     = "CAPABILITY_AUTO_EXPAND"
     val CAPABILITY_RESOURCE_POLICY = "CAPABILITY_RESOURCE_POLICY"
 
-    val values = IndexedSeq(CAPABILITY_IAM, CAPABILITY_NAMED_IAM, CAPABILITY_AUTO_EXPAND, CAPABILITY_RESOURCE_POLICY)
+    val values = js.Object.freeze(
+      js.Array(CAPABILITY_IAM, CAPABILITY_NAMED_IAM, CAPABILITY_AUTO_EXPAND, CAPABILITY_RESOURCE_POLICY)
+    )
   }
 
   @js.native
@@ -952,7 +954,7 @@ package serverlessapplicationrepository {
     val ACTIVE    = "ACTIVE"
     val EXPIRED   = "EXPIRED"
 
-    val values = IndexedSeq(PREPARING, ACTIVE, EXPIRED)
+    val values = js.Object.freeze(js.Array(PREPARING, ACTIVE, EXPIRED))
   }
 
   /**
diff --git a/services/servicecatalog/src/main/scala/facade/amazonaws/services/ServiceCatalog.scala b/services/servicecatalog/src/main/scala/facade/amazonaws/services/ServiceCatalog.scala
index e9a4d5ad3..d96dc0cd6 100644
--- a/services/servicecatalog/src/main/scala/facade/amazonaws/services/ServiceCatalog.scala
+++ b/services/servicecatalog/src/main/scala/facade/amazonaws/services/ServiceCatalog.scala
@@ -674,7 +674,7 @@ package servicecatalog {
     val Role    = "Role"
     val User    = "User"
 
-    val values = IndexedSeq(Account, Role, User)
+    val values = js.Object.freeze(js.Array(Account, Role, User))
   }
 
   object AccessStatusEnum {
@@ -682,7 +682,7 @@ package servicecatalog {
     val UNDER_CHANGE = "UNDER_CHANGE"
     val DISABLED     = "DISABLED"
 
-    val values = IndexedSeq(ENABLED, UNDER_CHANGE, DISABLED)
+    val values = js.Object.freeze(js.Array(ENABLED, UNDER_CHANGE, DISABLED))
   }
 
   @js.native
@@ -960,7 +960,7 @@ package servicecatalog {
     val MODIFY = "MODIFY"
     val REMOVE = "REMOVE"
 
-    val values = IndexedSeq(ADD, MODIFY, REMOVE)
+    val values = js.Object.freeze(js.Array(ADD, MODIFY, REMOVE))
   }
 
   /**
@@ -1032,7 +1032,7 @@ package servicecatalog {
   object CopyOptionEnum {
     val CopyTags = "CopyTags"
 
-    val values = IndexedSeq(CopyTags)
+    val values = js.Object.freeze(js.Array(CopyTags))
   }
 
   @js.native
@@ -1092,7 +1092,7 @@ package servicecatalog {
     val IN_PROGRESS = "IN_PROGRESS"
     val FAILED      = "FAILED"
 
-    val values = IndexedSeq(SUCCEEDED, IN_PROGRESS, FAILED)
+    val values = js.Object.freeze(js.Array(SUCCEEDED, IN_PROGRESS, FAILED))
   }
 
   @js.native
@@ -2649,7 +2649,7 @@ package servicecatalog {
     val STATIC  = "STATIC"
     val DYNAMIC = "DYNAMIC"
 
-    val values = IndexedSeq(STATIC, DYNAMIC)
+    val values = js.Object.freeze(js.Array(STATIC, DYNAMIC))
   }
 
   @js.native
@@ -3684,7 +3684,7 @@ package servicecatalog {
     val ORGANIZATIONAL_UNIT = "ORGANIZATIONAL_UNIT"
     val ACCOUNT             = "ACCOUNT"
 
-    val values = IndexedSeq(ORGANIZATION, ORGANIZATIONAL_UNIT, ACCOUNT)
+    val values = js.Object.freeze(js.Array(ORGANIZATION, ORGANIZATIONAL_UNIT, ACCOUNT))
   }
 
   /**
@@ -3743,7 +3743,7 @@ package servicecatalog {
     val AWS_SERVICECATALOG = "AWS_SERVICECATALOG"
     val AWS_ORGANIZATIONS  = "AWS_ORGANIZATIONS"
 
-    val values = IndexedSeq(IMPORTED, AWS_SERVICECATALOG, AWS_ORGANIZATIONS)
+    val values = js.Object.freeze(js.Array(IMPORTED, AWS_SERVICECATALOG, AWS_ORGANIZATIONS))
   }
 
   /**
@@ -3770,20 +3770,20 @@ package servicecatalog {
   object PrincipalTypeEnum {
     val IAM = "IAM"
 
-    val values = IndexedSeq(IAM)
+    val values = js.Object.freeze(js.Array(IAM))
   }
 
   object ProductSourceEnum {
     val ACCOUNT = "ACCOUNT"
 
-    val values = IndexedSeq(ACCOUNT)
+    val values = js.Object.freeze(js.Array(ACCOUNT))
   }
 
   object ProductTypeEnum {
     val CLOUD_FORMATION_TEMPLATE = "CLOUD_FORMATION_TEMPLATE"
     val MARKETPLACE              = "MARKETPLACE"
 
-    val values = IndexedSeq(CLOUD_FORMATION_TEMPLATE, MARKETPLACE)
+    val values = js.Object.freeze(js.Array(CLOUD_FORMATION_TEMPLATE, MARKETPLACE))
   }
 
   /**
@@ -3840,7 +3840,7 @@ package servicecatalog {
     val ProductType     = "ProductType"
     val SourceProductId = "SourceProductId"
 
-    val values = IndexedSeq(FullTextSearch, Owner, ProductType, SourceProductId)
+    val values = js.Object.freeze(js.Array(FullTextSearch, Owner, ProductType, SourceProductId))
   }
 
   object ProductViewSortByEnum {
@@ -3848,7 +3848,7 @@ package servicecatalog {
     val VersionCount = "VersionCount"
     val CreationDate = "CreationDate"
 
-    val values = IndexedSeq(Title, VersionCount, CreationDate)
+    val values = js.Object.freeze(js.Array(Title, VersionCount, CreationDate))
   }
 
   /**
@@ -3902,7 +3902,7 @@ package servicecatalog {
   object PropertyKeyEnum {
     val OWNER = "OWNER"
 
-    val values = IndexedSeq(OWNER)
+    val values = js.Object.freeze(js.Array(OWNER))
   }
 
   @js.native
@@ -4140,13 +4140,8 @@ package servicecatalog {
     val EXECUTE_SUCCESS     = "EXECUTE_SUCCESS"
     val EXECUTE_FAILED      = "EXECUTE_FAILED"
 
-    val values = IndexedSeq(
-      CREATE_IN_PROGRESS,
-      CREATE_SUCCESS,
-      CREATE_FAILED,
-      EXECUTE_IN_PROGRESS,
-      EXECUTE_SUCCESS,
-      EXECUTE_FAILED
+    val values = js.Object.freeze(
+      js.Array(CREATE_IN_PROGRESS, CREATE_SUCCESS, CREATE_FAILED, EXECUTE_IN_PROGRESS, EXECUTE_SUCCESS, EXECUTE_FAILED)
     )
   }
 
@@ -4186,7 +4181,7 @@ package servicecatalog {
   object ProvisionedProductPlanTypeEnum {
     val CLOUDFORMATION = "CLOUDFORMATION"
 
-    val values = IndexedSeq(CLOUDFORMATION)
+    val values = js.Object.freeze(js.Array(CLOUDFORMATION))
   }
 
   object ProvisionedProductStatusEnum {
@@ -4196,13 +4191,13 @@ package servicecatalog {
     val ERROR            = "ERROR"
     val PLAN_IN_PROGRESS = "PLAN_IN_PROGRESS"
 
-    val values = IndexedSeq(AVAILABLE, UNDER_CHANGE, TAINTED, ERROR, PLAN_IN_PROGRESS)
+    val values = js.Object.freeze(js.Array(AVAILABLE, UNDER_CHANGE, TAINTED, ERROR, PLAN_IN_PROGRESS))
   }
 
   object ProvisionedProductViewFilterByEnum {
     val SearchQuery = "SearchQuery"
 
-    val values = IndexedSeq(SearchQuery)
+    val values = js.Object.freeze(js.Array(SearchQuery))
   }
 
   /**
@@ -4275,7 +4270,7 @@ package servicecatalog {
     val DEFAULT    = "DEFAULT"
     val DEPRECATED = "DEPRECATED"
 
-    val values = IndexedSeq(DEFAULT, DEPRECATED)
+    val values = js.Object.freeze(js.Array(DEFAULT, DEPRECATED))
   }
 
   /**
@@ -4368,7 +4363,7 @@ package servicecatalog {
   object ProvisioningArtifactPropertyNameEnum {
     val Id = "Id"
 
-    val values = IndexedSeq(Id)
+    val values = js.Object.freeze(js.Array(Id))
   }
 
   /**
@@ -4408,7 +4403,7 @@ package servicecatalog {
     val MARKETPLACE_AMI          = "MARKETPLACE_AMI"
     val MARKETPLACE_CAR          = "MARKETPLACE_CAR"
 
-    val values = IndexedSeq(CLOUD_FORMATION_TEMPLATE, MARKETPLACE_AMI, MARKETPLACE_CAR)
+    val values = js.Object.freeze(js.Array(CLOUD_FORMATION_TEMPLATE, MARKETPLACE_AMI, MARKETPLACE_CAR))
   }
 
   /**
@@ -4598,7 +4593,7 @@ package servicecatalog {
     val SUCCEEDED            = "SUCCEEDED"
     val FAILED               = "FAILED"
 
-    val values = IndexedSeq(CREATED, IN_PROGRESS, IN_PROGRESS_IN_ERROR, SUCCEEDED, FAILED)
+    val values = js.Object.freeze(js.Array(CREATED, IN_PROGRESS, IN_PROGRESS_IN_ERROR, SUCCEEDED, FAILED))
   }
 
   /**
@@ -4662,7 +4657,7 @@ package servicecatalog {
     val FALSE       = "FALSE"
     val CONDITIONAL = "CONDITIONAL"
 
-    val values = IndexedSeq(TRUE, FALSE, CONDITIONAL)
+    val values = js.Object.freeze(js.Array(TRUE, FALSE, CONDITIONAL))
   }
 
   object RequiresRecreationEnum {
@@ -4670,7 +4665,7 @@ package servicecatalog {
     val CONDITIONALLY = "CONDITIONALLY"
     val ALWAYS        = "ALWAYS"
 
-    val values = IndexedSeq(NEVER, CONDITIONALLY, ALWAYS)
+    val values = js.Object.freeze(js.Array(NEVER, CONDITIONALLY, ALWAYS))
   }
 
   object ResourceAttributeEnum {
@@ -4681,7 +4676,7 @@ package servicecatalog {
     val DELETIONPOLICY = "DELETIONPOLICY"
     val TAGS           = "TAGS"
 
-    val values = IndexedSeq(PROPERTIES, METADATA, CREATIONPOLICY, UPDATEPOLICY, DELETIONPOLICY, TAGS)
+    val values = js.Object.freeze(js.Array(PROPERTIES, METADATA, CREATIONPOLICY, UPDATEPOLICY, DELETIONPOLICY, TAGS))
   }
 
   /**
@@ -5032,7 +5027,8 @@ package servicecatalog {
     val RESOURCE_NOT_FOUND = "RESOURCE_NOT_FOUND"
     val THROTTLING         = "THROTTLING"
 
-    val values = IndexedSeq(DUPLICATE_RESOURCE, INTERNAL_FAILURE, LIMIT_EXCEEDED, RESOURCE_NOT_FOUND, THROTTLING)
+    val values =
+      js.Object.freeze(js.Array(DUPLICATE_RESOURCE, INTERNAL_FAILURE, LIMIT_EXCEEDED, RESOURCE_NOT_FOUND, THROTTLING))
   }
 
   object ServiceActionDefinitionKeyEnum {
@@ -5041,13 +5037,13 @@ package servicecatalog {
     val AssumeRole = "AssumeRole"
     val Parameters = "Parameters"
 
-    val values = IndexedSeq(Name, Version, AssumeRole, Parameters)
+    val values = js.Object.freeze(js.Array(Name, Version, AssumeRole, Parameters))
   }
 
   object ServiceActionDefinitionTypeEnum {
     val SSM_AUTOMATION = "SSM_AUTOMATION"
 
-    val values = IndexedSeq(SSM_AUTOMATION)
+    val values = js.Object.freeze(js.Array(SSM_AUTOMATION))
   }
 
   /**
@@ -5150,14 +5146,14 @@ package servicecatalog {
     val COMPLETED_WITH_ERRORS = "COMPLETED_WITH_ERRORS"
     val ERROR                 = "ERROR"
 
-    val values = IndexedSeq(NOT_STARTED, IN_PROGRESS, COMPLETED, COMPLETED_WITH_ERRORS, ERROR)
+    val values = js.Object.freeze(js.Array(NOT_STARTED, IN_PROGRESS, COMPLETED, COMPLETED_WITH_ERRORS, ERROR))
   }
 
   object SortOrderEnum {
     val ASCENDING  = "ASCENDING"
     val DESCENDING = "DESCENDING"
 
-    val values = IndexedSeq(ASCENDING, DESCENDING)
+    val values = js.Object.freeze(js.Array(ASCENDING, DESCENDING))
   }
 
   /**
@@ -5189,7 +5185,7 @@ package servicecatalog {
     val OUTDATED   = "OUTDATED"
     val INOPERABLE = "INOPERABLE"
 
-    val values = IndexedSeq(CURRENT, OUTDATED, INOPERABLE)
+    val values = js.Object.freeze(js.Array(CURRENT, OUTDATED, INOPERABLE))
   }
 
   object StackSetOperationTypeEnum {
@@ -5197,7 +5193,7 @@ package servicecatalog {
     val UPDATE = "UPDATE"
     val DELETE = "DELETE"
 
-    val values = IndexedSeq(CREATE, UPDATE, DELETE)
+    val values = js.Object.freeze(js.Array(CREATE, UPDATE, DELETE))
   }
 
   object StatusEnum {
@@ -5205,7 +5201,7 @@ package servicecatalog {
     val CREATING  = "CREATING"
     val FAILED    = "FAILED"
 
-    val values = IndexedSeq(AVAILABLE, CREATING, FAILED)
+    val values = js.Object.freeze(js.Array(AVAILABLE, CREATING, FAILED))
   }
 
   /**
diff --git a/services/servicediscovery/src/main/scala/facade/amazonaws/services/ServiceDiscovery.scala b/services/servicediscovery/src/main/scala/facade/amazonaws/services/ServiceDiscovery.scala
index 6771797da..4ec9bf132 100644
--- a/services/servicediscovery/src/main/scala/facade/amazonaws/services/ServiceDiscovery.scala
+++ b/services/servicediscovery/src/main/scala/facade/amazonaws/services/ServiceDiscovery.scala
@@ -307,7 +307,7 @@ package servicediscovery {
     val HEALTHY   = "HEALTHY"
     val UNHEALTHY = "UNHEALTHY"
 
-    val values = IndexedSeq(HEALTHY, UNHEALTHY)
+    val values = js.Object.freeze(js.Array(HEALTHY, UNHEALTHY))
   }
 
   @js.native
@@ -542,7 +542,7 @@ package servicediscovery {
     val IN      = "IN"
     val BETWEEN = "BETWEEN"
 
-    val values = IndexedSeq(EQ, IN, BETWEEN)
+    val values = js.Object.freeze(js.Array(EQ, IN, BETWEEN))
   }
 
   @js.native
@@ -802,7 +802,7 @@ package servicediscovery {
     val HTTPS = "HTTPS"
     val TCP   = "TCP"
 
-    val values = IndexedSeq(HTTP, HTTPS, TCP)
+    val values = js.Object.freeze(js.Array(HTTP, HTTPS, TCP))
   }
 
   object HealthStatusEnum {
@@ -810,7 +810,7 @@ package servicediscovery {
     val UNHEALTHY = "UNHEALTHY"
     val UNKNOWN   = "UNKNOWN"
 
-    val values = IndexedSeq(HEALTHY, UNHEALTHY, UNKNOWN)
+    val values = js.Object.freeze(js.Array(HEALTHY, UNHEALTHY, UNKNOWN))
   }
 
   object HealthStatusFilterEnum {
@@ -818,7 +818,7 @@ package servicediscovery {
     val UNHEALTHY = "UNHEALTHY"
     val ALL       = "ALL"
 
-    val values = IndexedSeq(HEALTHY, UNHEALTHY, ALL)
+    val values = js.Object.freeze(js.Array(HEALTHY, UNHEALTHY, ALL))
   }
 
   /**
@@ -1145,7 +1145,7 @@ package servicediscovery {
   object NamespaceFilterNameEnum {
     val TYPE = "TYPE"
 
-    val values = IndexedSeq(TYPE)
+    val values = js.Object.freeze(js.Array(TYPE))
   }
 
   /**
@@ -1213,7 +1213,7 @@ package servicediscovery {
     val DNS_PRIVATE = "DNS_PRIVATE"
     val HTTP        = "HTTP"
 
-    val values = IndexedSeq(DNS_PUBLIC, DNS_PRIVATE, HTTP)
+    val values = js.Object.freeze(js.Array(DNS_PUBLIC, DNS_PRIVATE, HTTP))
   }
 
   /**
@@ -1288,7 +1288,7 @@ package servicediscovery {
     val TYPE         = "TYPE"
     val UPDATE_DATE  = "UPDATE_DATE"
 
-    val values = IndexedSeq(NAMESPACE_ID, SERVICE_ID, STATUS, TYPE, UPDATE_DATE)
+    val values = js.Object.freeze(js.Array(NAMESPACE_ID, SERVICE_ID, STATUS, TYPE, UPDATE_DATE))
   }
 
   object OperationStatusEnum {
@@ -1297,7 +1297,7 @@ package servicediscovery {
     val SUCCESS   = "SUCCESS"
     val FAIL      = "FAIL"
 
-    val values = IndexedSeq(SUBMITTED, PENDING, SUCCESS, FAIL)
+    val values = js.Object.freeze(js.Array(SUBMITTED, PENDING, SUCCESS, FAIL))
   }
 
   /**
@@ -1326,7 +1326,7 @@ package servicediscovery {
     val SERVICE   = "SERVICE"
     val INSTANCE  = "INSTANCE"
 
-    val values = IndexedSeq(NAMESPACE, SERVICE, INSTANCE)
+    val values = js.Object.freeze(js.Array(NAMESPACE, SERVICE, INSTANCE))
   }
 
   object OperationTypeEnum {
@@ -1336,7 +1336,9 @@ package servicediscovery {
     val REGISTER_INSTANCE   = "REGISTER_INSTANCE"
     val DEREGISTER_INSTANCE = "DEREGISTER_INSTANCE"
 
-    val values = IndexedSeq(CREATE_NAMESPACE, DELETE_NAMESPACE, UPDATE_SERVICE, REGISTER_INSTANCE, DEREGISTER_INSTANCE)
+    val values = js.Object.freeze(
+      js.Array(CREATE_NAMESPACE, DELETE_NAMESPACE, UPDATE_SERVICE, REGISTER_INSTANCE, DEREGISTER_INSTANCE)
+    )
   }
 
   object RecordTypeEnum {
@@ -1345,7 +1347,7 @@ package servicediscovery {
     val AAAA  = "AAAA"
     val CNAME = "CNAME"
 
-    val values = IndexedSeq(SRV, A, AAAA, CNAME)
+    val values = js.Object.freeze(js.Array(SRV, A, AAAA, CNAME))
   }
 
   @js.native
@@ -1393,7 +1395,7 @@ package servicediscovery {
     val MULTIVALUE = "MULTIVALUE"
     val WEIGHTED   = "WEIGHTED"
 
-    val values = IndexedSeq(MULTIVALUE, WEIGHTED)
+    val values = js.Object.freeze(js.Array(MULTIVALUE, WEIGHTED))
   }
 
   /**
@@ -1499,7 +1501,7 @@ package servicediscovery {
   object ServiceFilterNameEnum {
     val NAMESPACE_ID = "NAMESPACE_ID"
 
-    val values = IndexedSeq(NAMESPACE_ID)
+    val values = js.Object.freeze(js.Array(NAMESPACE_ID))
   }
 
   /**
diff --git a/services/servicequotas/src/main/scala/facade/amazonaws/services/ServiceQuotas.scala b/services/servicequotas/src/main/scala/facade/amazonaws/services/ServiceQuotas.scala
index 518df6669..59eee6c0f 100644
--- a/services/servicequotas/src/main/scala/facade/amazonaws/services/ServiceQuotas.scala
+++ b/services/servicequotas/src/main/scala/facade/amazonaws/services/ServiceQuotas.scala
@@ -238,11 +238,13 @@ package servicequotas {
     val DEPENDENCY_SERVICE_ERROR          = "DEPENDENCY_SERVICE_ERROR"
     val SERVICE_QUOTA_NOT_AVAILABLE_ERROR = "SERVICE_QUOTA_NOT_AVAILABLE_ERROR"
 
-    val values = IndexedSeq(
-      DEPENDENCY_ACCESS_DENIED_ERROR,
-      DEPENDENCY_THROTTLING_ERROR,
-      DEPENDENCY_SERVICE_ERROR,
-      SERVICE_QUOTA_NOT_AVAILABLE_ERROR
+    val values = js.Object.freeze(
+      js.Array(
+        DEPENDENCY_ACCESS_DENIED_ERROR,
+        DEPENDENCY_THROTTLING_ERROR,
+        DEPENDENCY_SERVICE_ERROR,
+        SERVICE_QUOTA_NOT_AVAILABLE_ERROR
+      )
     )
   }
 
@@ -727,7 +729,7 @@ package servicequotas {
     val DAY         = "DAY"
     val WEEK        = "WEEK"
 
-    val values = IndexedSeq(MICROSECOND, MILLISECOND, SECOND, MINUTE, HOUR, DAY, WEEK)
+    val values = js.Object.freeze(js.Array(MICROSECOND, MILLISECOND, SECOND, MINUTE, HOUR, DAY, WEEK))
   }
 
   @js.native
@@ -839,7 +841,7 @@ package servicequotas {
     val DENIED      = "DENIED"
     val CASE_CLOSED = "CASE_CLOSED"
 
-    val values = IndexedSeq(PENDING, CASE_OPENED, APPROVED, DENIED, CASE_CLOSED)
+    val values = js.Object.freeze(js.Array(PENDING, CASE_OPENED, APPROVED, DENIED, CASE_CLOSED))
   }
 
   /**
@@ -1014,6 +1016,6 @@ package servicequotas {
     val ASSOCIATED    = "ASSOCIATED"
     val DISASSOCIATED = "DISASSOCIATED"
 
-    val values = IndexedSeq(ASSOCIATED, DISASSOCIATED)
+    val values = js.Object.freeze(js.Array(ASSOCIATED, DISASSOCIATED))
   }
 }
diff --git a/services/ses/src/main/scala/facade/amazonaws/services/SES.scala b/services/ses/src/main/scala/facade/amazonaws/services/SES.scala
index cb3891ace..9018a9705 100644
--- a/services/ses/src/main/scala/facade/amazonaws/services/SES.scala
+++ b/services/ses/src/main/scala/facade/amazonaws/services/SES.scala
@@ -463,7 +463,7 @@ package ses {
     val UseDefaultValue = "UseDefaultValue"
     val RejectMessage   = "RejectMessage"
 
-    val values = IndexedSeq(UseDefaultValue, RejectMessage)
+    val values = js.Object.freeze(js.Array(UseDefaultValue, RejectMessage))
   }
 
   /**
@@ -528,7 +528,9 @@ package ses {
     val Undefined        = "Undefined"
     val TemporaryFailure = "TemporaryFailure"
 
-    val values = IndexedSeq(DoesNotExist, MessageTooLarge, ExceededQuota, ContentRejected, Undefined, TemporaryFailure)
+    val values = js.Object.freeze(
+      js.Array(DoesNotExist, MessageTooLarge, ExceededQuota, ContentRejected, Undefined, TemporaryFailure)
+    )
   }
 
   /**
@@ -627,21 +629,23 @@ package ses {
     val TransientFailure              = "TransientFailure"
     val Failed                        = "Failed"
 
-    val values = IndexedSeq(
-      Success,
-      MessageRejected,
-      MailFromDomainNotVerified,
-      ConfigurationSetDoesNotExist,
-      TemplateDoesNotExist,
-      AccountSuspended,
-      AccountThrottled,
-      AccountDailyQuotaExceeded,
-      InvalidSendingPoolName,
-      AccountSendingPaused,
-      ConfigurationSetSendingPaused,
-      InvalidParameterValue,
-      TransientFailure,
-      Failed
+    val values = js.Object.freeze(
+      js.Array(
+        Success,
+        MessageRejected,
+        MailFromDomainNotVerified,
+        ConfigurationSetDoesNotExist,
+        TemplateDoesNotExist,
+        AccountSuspended,
+        AccountThrottled,
+        AccountDailyQuotaExceeded,
+        InvalidSendingPoolName,
+        AccountSendingPaused,
+        ConfigurationSetSendingPaused,
+        InvalidParameterValue,
+        TransientFailure,
+        Failed
+      )
     )
   }
 
@@ -758,7 +762,7 @@ package ses {
     val deliveryOptions   = "deliveryOptions"
     val reputationOptions = "reputationOptions"
 
-    val values = IndexedSeq(eventDestinations, trackingOptions, deliveryOptions, reputationOptions)
+    val values = js.Object.freeze(js.Array(eventDestinations, trackingOptions, deliveryOptions, reputationOptions))
   }
 
   /**
@@ -1080,7 +1084,7 @@ package ses {
     val Failed           = "Failed"
     val TemporaryFailure = "TemporaryFailure"
 
-    val values = IndexedSeq(Pending, Success, Failed, TemporaryFailure)
+    val values = js.Object.freeze(js.Array(Pending, Success, Failed, TemporaryFailure))
   }
 
   /**
@@ -1696,7 +1700,7 @@ package ses {
     val emailHeader = "emailHeader"
     val linkTag     = "linkTag"
 
-    val values = IndexedSeq(messageTag, emailHeader, linkTag)
+    val values = js.Object.freeze(js.Array(messageTag, emailHeader, linkTag))
   }
 
   object DsnActionEnum {
@@ -1706,7 +1710,7 @@ package ses {
     val relayed   = "relayed"
     val expanded  = "expanded"
 
-    val values = IndexedSeq(failed, delayed, delivered, relayed, expanded)
+    val values = js.Object.freeze(js.Array(failed, delayed, delivered, relayed, expanded))
   }
 
   /**
@@ -1757,7 +1761,7 @@ package ses {
     val click            = "click"
     val renderingFailure = "renderingFailure"
 
-    val values = IndexedSeq(send, reject, bounce, complaint, delivery, open, click, renderingFailure)
+    val values = js.Object.freeze(js.Array(send, reject, bounce, complaint, delivery, open, click, renderingFailure))
   }
 
   /**
@@ -2232,7 +2236,7 @@ package ses {
     val EmailAddress = "EmailAddress"
     val Domain       = "Domain"
 
-    val values = IndexedSeq(EmailAddress, Domain)
+    val values = js.Object.freeze(js.Array(EmailAddress, Domain))
   }
 
   /**
@@ -2262,7 +2266,7 @@ package ses {
     val Event           = "Event"
     val RequestResponse = "RequestResponse"
 
-    val values = IndexedSeq(Event, RequestResponse)
+    val values = js.Object.freeze(js.Array(Event, RequestResponse))
   }
 
   /**
@@ -2696,7 +2700,7 @@ package ses {
     val Complaint = "Complaint"
     val Delivery  = "Delivery"
 
-    val values = IndexedSeq(Bounce, Complaint, Delivery)
+    val values = js.Object.freeze(js.Array(Bounce, Complaint, Delivery))
   }
 
   /**
@@ -2863,7 +2867,7 @@ package ses {
     val Block = "Block"
     val Allow = "Allow"
 
-    val values = IndexedSeq(Block, Allow)
+    val values = js.Object.freeze(js.Array(Block, Allow))
   }
 
   /**
@@ -3114,7 +3118,7 @@ package ses {
     val `UTF-8` = "UTF-8"
     val Base64  = "Base64"
 
-    val values = IndexedSeq(`UTF-8`, Base64)
+    val values = js.Object.freeze(js.Array(`UTF-8`, Base64))
   }
 
   /**
@@ -3824,7 +3828,7 @@ package ses {
   object StopScopeEnum {
     val RuleSet = "RuleSet"
 
-    val values = IndexedSeq(RuleSet)
+    val values = js.Object.freeze(js.Array(RuleSet))
   }
 
   /**
@@ -3916,7 +3920,7 @@ package ses {
     val Require  = "Require"
     val Optional = "Optional"
 
-    val values = IndexedSeq(Require, Optional)
+    val values = js.Object.freeze(js.Array(Require, Optional))
   }
 
   /**
@@ -4187,7 +4191,7 @@ package ses {
     val TemporaryFailure = "TemporaryFailure"
     val NotStarted       = "NotStarted"
 
-    val values = IndexedSeq(Pending, Success, Failed, TemporaryFailure, NotStarted)
+    val values = js.Object.freeze(js.Array(Pending, Success, Failed, TemporaryFailure, NotStarted))
   }
 
   /**
diff --git a/services/shield/src/main/scala/facade/amazonaws/services/Shield.scala b/services/shield/src/main/scala/facade/amazonaws/services/Shield.scala
index f0074337d..bab3c0ae1 100644
--- a/services/shield/src/main/scala/facade/amazonaws/services/Shield.scala
+++ b/services/shield/src/main/scala/facade/amazonaws/services/Shield.scala
@@ -217,7 +217,7 @@ package shield {
     val NETWORK     = "NETWORK"
     val APPLICATION = "APPLICATION"
 
-    val values = IndexedSeq(NETWORK, APPLICATION)
+    val values = js.Object.freeze(js.Array(NETWORK, APPLICATION))
   }
 
   /**
@@ -260,15 +260,17 @@ package shield {
     val WORDPRESS_PINGBACK_REFLECTOR = "WORDPRESS_PINGBACK_REFLECTOR"
     val WORDPRESS_PINGBACK_SOURCE    = "WORDPRESS_PINGBACK_SOURCE"
 
-    val values = IndexedSeq(
-      DESTINATION_URL,
-      REFERRER,
-      SOURCE_ASN,
-      SOURCE_COUNTRY,
-      SOURCE_IP_ADDRESS,
-      SOURCE_USER_AGENT,
-      WORDPRESS_PINGBACK_REFLECTOR,
-      WORDPRESS_PINGBACK_SOURCE
+    val values = js.Object.freeze(
+      js.Array(
+        DESTINATION_URL,
+        REFERRER,
+        SOURCE_ASN,
+        SOURCE_COUNTRY,
+        SOURCE_IP_ADDRESS,
+        SOURCE_USER_AGENT,
+        WORDPRESS_PINGBACK_REFLECTOR,
+        WORDPRESS_PINGBACK_SOURCE
+      )
     )
   }
 
@@ -326,7 +328,7 @@ package shield {
     val ENABLED  = "ENABLED"
     val DISABLED = "DISABLED"
 
-    val values = IndexedSeq(ENABLED, DISABLED)
+    val values = js.Object.freeze(js.Array(ENABLED, DISABLED))
   }
 
   /**
@@ -890,7 +892,7 @@ package shield {
     val IP  = "IP"
     val URL = "URL"
 
-    val values = IndexedSeq(IP, URL)
+    val values = js.Object.freeze(js.Array(IP, URL))
   }
 
   /**
@@ -927,7 +929,7 @@ package shield {
     val ACTIVE   = "ACTIVE"
     val INACTIVE = "INACTIVE"
 
-    val values = IndexedSeq(ACTIVE, INACTIVE)
+    val values = js.Object.freeze(js.Array(ACTIVE, INACTIVE))
   }
 
   /**
@@ -1013,7 +1015,7 @@ package shield {
     val PACKETS  = "PACKETS"
     val REQUESTS = "REQUESTS"
 
-    val values = IndexedSeq(BITS, BYTES, PACKETS, REQUESTS)
+    val values = js.Object.freeze(js.Array(BITS, BYTES, PACKETS, REQUESTS))
   }
 
   @js.native
diff --git a/services/signer/src/main/scala/facade/amazonaws/services/Signer.scala b/services/signer/src/main/scala/facade/amazonaws/services/Signer.scala
index 88226bf69..cba6f61e0 100644
--- a/services/signer/src/main/scala/facade/amazonaws/services/Signer.scala
+++ b/services/signer/src/main/scala/facade/amazonaws/services/Signer.scala
@@ -102,7 +102,7 @@ package signer {
   object CategoryEnum {
     val AWSIoT = "AWSIoT"
 
-    val values = IndexedSeq(AWSIoT)
+    val values = js.Object.freeze(js.Array(AWSIoT))
   }
 
   @js.native
@@ -195,7 +195,7 @@ package signer {
     val RSA   = "RSA"
     val ECDSA = "ECDSA"
 
-    val values = IndexedSeq(RSA, ECDSA)
+    val values = js.Object.freeze(js.Array(RSA, ECDSA))
   }
 
   /**
@@ -325,7 +325,7 @@ package signer {
     val SHA1   = "SHA1"
     val SHA256 = "SHA256"
 
-    val values = IndexedSeq(SHA1, SHA256)
+    val values = js.Object.freeze(js.Array(SHA1, SHA256))
   }
 
   /**
@@ -354,7 +354,7 @@ package signer {
   object ImageFormatEnum {
     val JSON = "JSON"
 
-    val values = IndexedSeq(JSON)
+    val values = js.Object.freeze(js.Array(JSON))
   }
 
   @js.native
@@ -827,7 +827,7 @@ package signer {
     val Active   = "Active"
     val Canceled = "Canceled"
 
-    val values = IndexedSeq(Active, Canceled)
+    val values = js.Object.freeze(js.Array(Active, Canceled))
   }
 
   object SigningStatusEnum {
@@ -835,7 +835,7 @@ package signer {
     val Failed     = "Failed"
     val Succeeded  = "Succeeded"
 
-    val values = IndexedSeq(InProgress, Failed, Succeeded)
+    val values = js.Object.freeze(js.Array(InProgress, Failed, Succeeded))
   }
 
   /**
diff --git a/services/sms/src/main/scala/facade/amazonaws/services/SMS.scala b/services/sms/src/main/scala/facade/amazonaws/services/SMS.scala
index 918b72dc4..a7a274809 100644
--- a/services/sms/src/main/scala/facade/amazonaws/services/SMS.scala
+++ b/services/sms/src/main/scala/facade/amazonaws/services/SMS.scala
@@ -224,21 +224,23 @@ package sms {
     val TERMINATE_FAILED          = "TERMINATE_FAILED"
     val TERMINATED                = "TERMINATED"
 
-    val values = IndexedSeq(
-      READY_FOR_CONFIGURATION,
-      CONFIGURATION_IN_PROGRESS,
-      CONFIGURATION_INVALID,
-      READY_FOR_LAUNCH,
-      VALIDATION_IN_PROGRESS,
-      LAUNCH_PENDING,
-      LAUNCH_IN_PROGRESS,
-      LAUNCHED,
-      DELTA_LAUNCH_IN_PROGRESS,
-      DELTA_LAUNCH_FAILED,
-      LAUNCH_FAILED,
-      TERMINATE_IN_PROGRESS,
-      TERMINATE_FAILED,
-      TERMINATED
+    val values = js.Object.freeze(
+      js.Array(
+        READY_FOR_CONFIGURATION,
+        CONFIGURATION_IN_PROGRESS,
+        CONFIGURATION_INVALID,
+        READY_FOR_LAUNCH,
+        VALIDATION_IN_PROGRESS,
+        LAUNCH_PENDING,
+        LAUNCH_IN_PROGRESS,
+        LAUNCHED,
+        DELTA_LAUNCH_IN_PROGRESS,
+        DELTA_LAUNCH_FAILED,
+        LAUNCH_FAILED,
+        TERMINATE_IN_PROGRESS,
+        TERMINATE_FAILED,
+        TERMINATED
+      )
     )
   }
 
@@ -259,22 +261,24 @@ package sms {
     val REPLICATION_STOP_FAILED       = "REPLICATION_STOP_FAILED"
     val REPLICATION_STOPPED           = "REPLICATION_STOPPED"
 
-    val values = IndexedSeq(
-      READY_FOR_CONFIGURATION,
-      CONFIGURATION_IN_PROGRESS,
-      CONFIGURATION_INVALID,
-      READY_FOR_REPLICATION,
-      VALIDATION_IN_PROGRESS,
-      REPLICATION_PENDING,
-      REPLICATION_IN_PROGRESS,
-      REPLICATED,
-      DELTA_REPLICATION_IN_PROGRESS,
-      DELTA_REPLICATED,
-      DELTA_REPLICATION_FAILED,
-      REPLICATION_FAILED,
-      REPLICATION_STOPPING,
-      REPLICATION_STOP_FAILED,
-      REPLICATION_STOPPED
+    val values = js.Object.freeze(
+      js.Array(
+        READY_FOR_CONFIGURATION,
+        CONFIGURATION_IN_PROGRESS,
+        CONFIGURATION_INVALID,
+        READY_FOR_REPLICATION,
+        VALIDATION_IN_PROGRESS,
+        REPLICATION_PENDING,
+        REPLICATION_IN_PROGRESS,
+        REPLICATED,
+        DELTA_REPLICATION_IN_PROGRESS,
+        DELTA_REPLICATED,
+        DELTA_REPLICATION_FAILED,
+        REPLICATION_FAILED,
+        REPLICATION_STOPPING,
+        REPLICATION_STOP_FAILED,
+        REPLICATION_STOPPED
+      )
     )
   }
 
@@ -286,7 +290,7 @@ package sms {
     val DELETED       = "DELETED"
     val DELETE_FAILED = "DELETE_FAILED"
 
-    val values = IndexedSeq(CREATING, ACTIVE, UPDATING, DELETING, DELETED, DELETE_FAILED)
+    val values = js.Object.freeze(js.Array(CREATING, ACTIVE, UPDATING, DELETING, DELETED, DELETE_FAILED))
   }
 
   /**
@@ -403,14 +407,14 @@ package sms {
     val `HYPERV-MANAGER`  = "HYPERV-MANAGER"
     val SNAPSHOT_BATCHING = "SNAPSHOT_BATCHING"
 
-    val values = IndexedSeq(VSPHERE, SCVMM, `HYPERV-MANAGER`, SNAPSHOT_BATCHING)
+    val values = js.Object.freeze(js.Array(VSPHERE, SCVMM, `HYPERV-MANAGER`, SNAPSHOT_BATCHING))
   }
 
   object ConnectorStatusEnum {
     val HEALTHY   = "HEALTHY"
     val UNHEALTHY = "UNHEALTHY"
 
-    val values = IndexedSeq(HEALTHY, UNHEALTHY)
+    val values = js.Object.freeze(js.Array(HEALTHY, UNHEALTHY))
   }
 
   @js.native
@@ -1107,7 +1111,7 @@ package sms {
     val AWS  = "AWS"
     val BYOL = "BYOL"
 
-    val values = IndexedSeq(AWS, BYOL)
+    val values = js.Object.freeze(js.Array(AWS, BYOL))
   }
 
   @js.native
@@ -1153,7 +1157,7 @@ package sms {
     val JSON = "JSON"
     val YAML = "YAML"
 
-    val values = IndexedSeq(JSON, YAML)
+    val values = js.Object.freeze(js.Array(JSON, YAML))
   }
 
   @js.native
@@ -1302,7 +1306,8 @@ package sms {
     val PAUSED_ON_FAILURE = "PAUSED_ON_FAILURE"
     val FAILING           = "FAILING"
 
-    val values = IndexedSeq(PENDING, ACTIVE, FAILED, DELETING, DELETED, COMPLETED, PAUSED_ON_FAILURE, FAILING)
+    val values =
+      js.Object.freeze(js.Array(PENDING, ACTIVE, FAILED, DELETING, DELETED, COMPLETED, PAUSED_ON_FAILURE, FAILING))
   }
 
   /**
@@ -1383,14 +1388,14 @@ package sms {
     val DELETING  = "DELETING"
     val DELETED   = "DELETED"
 
-    val values = IndexedSeq(PENDING, MISSED, ACTIVE, FAILED, COMPLETED, DELETING, DELETED)
+    val values = js.Object.freeze(js.Array(PENDING, MISSED, ACTIVE, FAILED, COMPLETED, DELETING, DELETED))
   }
 
   object ReplicationRunTypeEnum {
     val ON_DEMAND = "ON_DEMAND"
     val AUTOMATIC = "AUTOMATIC"
 
-    val values = IndexedSeq(ON_DEMAND, AUTOMATIC)
+    val values = js.Object.freeze(js.Array(ON_DEMAND, AUTOMATIC))
   }
 
   /**
@@ -1451,7 +1456,7 @@ package sms {
     val DELETED      = "DELETED"
     val EXPIRED      = "EXPIRED"
 
-    val values = IndexedSeq(NOT_IMPORTED, IMPORTING, AVAILABLE, DELETED, EXPIRED)
+    val values = js.Object.freeze(js.Array(NOT_IMPORTED, IMPORTING, AVAILABLE, DELETED, EXPIRED))
   }
 
   /**
@@ -1627,7 +1632,7 @@ package sms {
   object ServerTypeEnum {
     val VIRTUAL_MACHINE = "VIRTUAL_MACHINE"
 
-    val values = IndexedSeq(VIRTUAL_MACHINE)
+    val values = js.Object.freeze(js.Array(VIRTUAL_MACHINE))
   }
 
   @js.native
@@ -1894,7 +1899,7 @@ package sms {
     val SCVMM            = "SCVMM"
     val `HYPERV-MANAGER` = "HYPERV-MANAGER"
 
-    val values = IndexedSeq(VSPHERE, SCVMM, `HYPERV-MANAGER`)
+    val values = js.Object.freeze(js.Array(VSPHERE, SCVMM, `HYPERV-MANAGER`))
   }
 
   /**
diff --git a/services/snowball/src/main/scala/facade/amazonaws/services/Snowball.scala b/services/snowball/src/main/scala/facade/amazonaws/services/Snowball.scala
index 88d020661..0e4e183b2 100644
--- a/services/snowball/src/main/scala/facade/amazonaws/services/Snowball.scala
+++ b/services/snowball/src/main/scala/facade/amazonaws/services/Snowball.scala
@@ -301,7 +301,7 @@ package snowball {
     val Complete       = "Complete"
     val Cancelled      = "Cancelled"
 
-    val values = IndexedSeq(AwaitingQuorum, Pending, InUse, Complete, Cancelled)
+    val values = js.Object.freeze(js.Array(AwaitingQuorum, Pending, InUse, Complete, Cancelled))
   }
 
   /**
@@ -944,20 +944,22 @@ package snowball {
     val Listing                = "Listing"
     val Pending                = "Pending"
 
-    val values = IndexedSeq(
-      New,
-      PreparingAppliance,
-      PreparingShipment,
-      InTransitToCustomer,
-      WithCustomer,
-      InTransitToAWS,
-      WithAWSSortingFacility,
-      WithAWS,
-      InProgress,
-      Complete,
-      Cancelled,
-      Listing,
-      Pending
+    val values = js.Object.freeze(
+      js.Array(
+        New,
+        PreparingAppliance,
+        PreparingShipment,
+        InTransitToCustomer,
+        WithCustomer,
+        InTransitToAWS,
+        WithAWSSortingFacility,
+        WithAWS,
+        InProgress,
+        Complete,
+        Cancelled,
+        Listing,
+        Pending
+      )
     )
   }
 
@@ -966,7 +968,7 @@ package snowball {
     val EXPORT    = "EXPORT"
     val LOCAL_USE = "LOCAL_USE"
 
-    val values = IndexedSeq(IMPORT, EXPORT, LOCAL_USE)
+    val values = js.Object.freeze(js.Array(IMPORT, EXPORT, LOCAL_USE))
   }
 
   /**
@@ -1257,7 +1259,7 @@ package snowball {
     val EXPRESS    = "EXPRESS"
     val STANDARD   = "STANDARD"
 
-    val values = IndexedSeq(SECOND_DAY, NEXT_DAY, EXPRESS, STANDARD)
+    val values = js.Object.freeze(js.Array(SECOND_DAY, NEXT_DAY, EXPRESS, STANDARD))
   }
 
   object SnowballCapacityEnum {
@@ -1267,7 +1269,7 @@ package snowball {
     val T42          = "T42"
     val NoPreference = "NoPreference"
 
-    val values = IndexedSeq(T50, T80, T100, T42, NoPreference)
+    val values = js.Object.freeze(js.Array(T50, T80, T100, T42, NoPreference))
   }
 
   object SnowballTypeEnum {
@@ -1276,7 +1278,7 @@ package snowball {
     val EDGE_C   = "EDGE_C"
     val EDGE_CG  = "EDGE_CG"
 
-    val values = IndexedSeq(STANDARD, EDGE, EDGE_C, EDGE_CG)
+    val values = js.Object.freeze(js.Array(STANDARD, EDGE, EDGE_C, EDGE_CG))
   }
 
   @js.native
diff --git a/services/sqs/src/main/scala/facade/amazonaws/services/SQS.scala b/services/sqs/src/main/scala/facade/amazonaws/services/SQS.scala
index e2cd3e74a..61e8fcd5f 100644
--- a/services/sqs/src/main/scala/facade/amazonaws/services/SQS.scala
+++ b/services/sqs/src/main/scala/facade/amazonaws/services/SQS.scala
@@ -731,14 +731,16 @@ package sqs {
     val MessageDeduplicationId           = "MessageDeduplicationId"
     val MessageGroupId                   = "MessageGroupId"
 
-    val values = IndexedSeq(
-      SenderId,
-      SentTimestamp,
-      ApproximateReceiveCount,
-      ApproximateFirstReceiveTimestamp,
-      SequenceNumber,
-      MessageDeduplicationId,
-      MessageGroupId
+    val values = js.Object.freeze(
+      js.Array(
+        SenderId,
+        SentTimestamp,
+        ApproximateReceiveCount,
+        ApproximateFirstReceiveTimestamp,
+        SequenceNumber,
+        MessageDeduplicationId,
+        MessageGroupId
+      )
     )
   }
 
@@ -782,25 +784,27 @@ package sqs {
     val KmsMasterKeyId                        = "KmsMasterKeyId"
     val KmsDataKeyReusePeriodSeconds          = "KmsDataKeyReusePeriodSeconds"
 
-    val values = IndexedSeq(
-      All,
-      Policy,
-      VisibilityTimeout,
-      MaximumMessageSize,
-      MessageRetentionPeriod,
-      ApproximateNumberOfMessages,
-      ApproximateNumberOfMessagesNotVisible,
-      CreatedTimestamp,
-      LastModifiedTimestamp,
-      QueueArn,
-      ApproximateNumberOfMessagesDelayed,
-      DelaySeconds,
-      ReceiveMessageWaitTimeSeconds,
-      RedrivePolicy,
-      FifoQueue,
-      ContentBasedDeduplication,
-      KmsMasterKeyId,
-      KmsDataKeyReusePeriodSeconds
+    val values = js.Object.freeze(
+      js.Array(
+        All,
+        Policy,
+        VisibilityTimeout,
+        MaximumMessageSize,
+        MessageRetentionPeriod,
+        ApproximateNumberOfMessages,
+        ApproximateNumberOfMessagesNotVisible,
+        CreatedTimestamp,
+        LastModifiedTimestamp,
+        QueueArn,
+        ApproximateNumberOfMessagesDelayed,
+        DelaySeconds,
+        ReceiveMessageWaitTimeSeconds,
+        RedrivePolicy,
+        FifoQueue,
+        ContentBasedDeduplication,
+        KmsMasterKeyId,
+        KmsDataKeyReusePeriodSeconds
+      )
     )
   }
 
diff --git a/services/ssm/src/main/scala/facade/amazonaws/services/SSM.scala b/services/ssm/src/main/scala/facade/amazonaws/services/SSM.scala
index 9f970907b..099902d08 100644
--- a/services/ssm/src/main/scala/facade/amazonaws/services/SSM.scala
+++ b/services/ssm/src/main/scala/facade/amazonaws/services/SSM.scala
@@ -1174,7 +1174,7 @@ package ssm {
     val LOW         = "LOW"
     val UNSPECIFIED = "UNSPECIFIED"
 
-    val values = IndexedSeq(CRITICAL, HIGH, MEDIUM, LOW, UNSPECIFIED)
+    val values = js.Object.freeze(js.Array(CRITICAL, HIGH, MEDIUM, LOW, UNSPECIFIED))
   }
 
   /**
@@ -1324,7 +1324,7 @@ package ssm {
     val Status      = "Status"
     val CreatedTime = "CreatedTime"
 
-    val values = IndexedSeq(ExecutionId, Status, CreatedTime)
+    val values = js.Object.freeze(js.Array(ExecutionId, Status, CreatedTime))
   }
 
   /**
@@ -1397,7 +1397,7 @@ package ssm {
     val ResourceId   = "ResourceId"
     val ResourceType = "ResourceType"
 
-    val values = IndexedSeq(Status, ResourceId, ResourceType)
+    val values = js.Object.freeze(js.Array(Status, ResourceId, ResourceType))
   }
 
   /**
@@ -1432,14 +1432,16 @@ package ssm {
     val LastExecutedAfter     = "LastExecutedAfter"
     val AssociationName       = "AssociationName"
 
-    val values = IndexedSeq(
-      InstanceId,
-      Name,
-      AssociationId,
-      AssociationStatusName,
-      LastExecutedBefore,
-      LastExecutedAfter,
-      AssociationName
+    val values = js.Object.freeze(
+      js.Array(
+        InstanceId,
+        Name,
+        AssociationId,
+        AssociationStatusName,
+        LastExecutedBefore,
+        LastExecutedAfter,
+        AssociationName
+      )
     )
   }
 
@@ -1448,7 +1450,7 @@ package ssm {
     val LESS_THAN    = "LESS_THAN"
     val GREATER_THAN = "GREATER_THAN"
 
-    val values = IndexedSeq(EQUAL, LESS_THAN, GREATER_THAN)
+    val values = js.Object.freeze(js.Array(EQUAL, LESS_THAN, GREATER_THAN))
   }
 
   /**
@@ -1511,7 +1513,7 @@ package ssm {
     val Success = "Success"
     val Failed  = "Failed"
 
-    val values = IndexedSeq(Pending, Success, Failed)
+    val values = js.Object.freeze(js.Array(Pending, Success, Failed))
   }
 
   /**
@@ -1601,7 +1603,7 @@ package ssm {
   object AttachmentHashTypeEnum {
     val Sha256 = "Sha256"
 
-    val values = IndexedSeq(Sha256)
+    val values = js.Object.freeze(js.Array(Sha256))
   }
 
   /**
@@ -1646,7 +1648,7 @@ package ssm {
   object AttachmentsSourceKeyEnum {
     val SourceUrl = "SourceUrl"
 
-    val values = IndexedSeq(SourceUrl)
+    val values = js.Object.freeze(js.Array(SourceUrl))
   }
 
   /**
@@ -1772,15 +1774,17 @@ package ssm {
     val StartTimeAfter     = "StartTimeAfter"
     val AutomationType     = "AutomationType"
 
-    val values = IndexedSeq(
-      DocumentNamePrefix,
-      ExecutionStatus,
-      ExecutionId,
-      ParentExecutionId,
-      CurrentAction,
-      StartTimeBefore,
-      StartTimeAfter,
-      AutomationType
+    val values = js.Object.freeze(
+      js.Array(
+        DocumentNamePrefix,
+        ExecutionStatus,
+        ExecutionId,
+        ParentExecutionId,
+        CurrentAction,
+        StartTimeBefore,
+        StartTimeAfter,
+        AutomationType
+      )
     )
   }
 
@@ -1875,14 +1879,15 @@ package ssm {
     val Cancelled  = "Cancelled"
     val Failed     = "Failed"
 
-    val values = IndexedSeq(Pending, InProgress, Waiting, Success, TimedOut, Cancelling, Cancelled, Failed)
+    val values =
+      js.Object.freeze(js.Array(Pending, InProgress, Waiting, Success, TimedOut, Cancelling, Cancelled, Failed))
   }
 
   object AutomationTypeEnum {
     val CrossAccount = "CrossAccount"
     val Local        = "Local"
 
-    val values = IndexedSeq(CrossAccount, Local)
+    val values = js.Object.freeze(js.Array(CrossAccount, Local))
   }
 
   /**
@@ -2090,7 +2095,7 @@ package ssm {
     val ExecutionStage = "ExecutionStage"
     val DocumentName   = "DocumentName"
 
-    val values = IndexedSeq(InvokedAfter, InvokedBefore, Status, ExecutionStage, DocumentName)
+    val values = js.Object.freeze(js.Array(InvokedAfter, InvokedBefore, Status, ExecutionStage, DocumentName))
   }
 
   /**
@@ -2166,7 +2171,8 @@ package ssm {
     val Failed     = "Failed"
     val Cancelling = "Cancelling"
 
-    val values = IndexedSeq(Pending, InProgress, Delayed, Success, Cancelled, TimedOut, Failed, Cancelling)
+    val values =
+      js.Object.freeze(js.Array(Pending, InProgress, Delayed, Success, Cancelled, TimedOut, Failed, Cancelling))
   }
 
   /**
@@ -2228,7 +2234,7 @@ package ssm {
     val Cancelled  = "Cancelled"
     val Failed     = "Failed"
 
-    val values = IndexedSeq(Pending, InProgress, Success, TimedOut, Cancelled, Failed)
+    val values = js.Object.freeze(js.Array(Pending, InProgress, Success, TimedOut, Cancelled, Failed))
   }
 
   object CommandStatusEnum {
@@ -2240,7 +2246,7 @@ package ssm {
     val TimedOut   = "TimedOut"
     val Cancelling = "Cancelling"
 
-    val values = IndexedSeq(Pending, InProgress, Success, Cancelled, Failed, TimedOut, Cancelling)
+    val values = js.Object.freeze(js.Array(Pending, InProgress, Success, Cancelled, Failed, TimedOut, Cancelling))
   }
 
   /**
@@ -2350,7 +2356,7 @@ package ssm {
     val LESS_THAN    = "LESS_THAN"
     val GREATER_THAN = "GREATER_THAN"
 
-    val values = IndexedSeq(EQUAL, NOT_EQUAL, BEGIN_WITH, LESS_THAN, GREATER_THAN)
+    val values = js.Object.freeze(js.Array(EQUAL, NOT_EQUAL, BEGIN_WITH, LESS_THAN, GREATER_THAN))
   }
 
   object ComplianceSeverityEnum {
@@ -2361,14 +2367,14 @@ package ssm {
     val INFORMATIONAL = "INFORMATIONAL"
     val UNSPECIFIED   = "UNSPECIFIED"
 
-    val values = IndexedSeq(CRITICAL, HIGH, MEDIUM, LOW, INFORMATIONAL, UNSPECIFIED)
+    val values = js.Object.freeze(js.Array(CRITICAL, HIGH, MEDIUM, LOW, INFORMATIONAL, UNSPECIFIED))
   }
 
   object ComplianceStatusEnum {
     val COMPLIANT     = "COMPLIANT"
     val NON_COMPLIANT = "NON_COMPLIANT"
 
-    val values = IndexedSeq(COMPLIANT, NON_COMPLIANT)
+    val values = js.Object.freeze(js.Array(COMPLIANT, NON_COMPLIANT))
   }
 
   /**
@@ -2444,7 +2450,7 @@ package ssm {
     val Connected    = "Connected"
     val NotConnected = "NotConnected"
 
-    val values = IndexedSeq(Connected, NotConnected)
+    val values = js.Object.freeze(js.Array(Connected, NotConnected))
   }
 
   @js.native
@@ -3399,7 +3405,7 @@ package ssm {
     val DefaultInstanceName = "DefaultInstanceName"
     val IamRole             = "IamRole"
 
-    val values = IndexedSeq(ActivationIds, DefaultInstanceName, IamRole)
+    val values = js.Object.freeze(js.Array(ActivationIds, DefaultInstanceName, IamRole))
   }
 
   @js.native
@@ -4911,21 +4917,21 @@ package ssm {
     val PlatformTypes = "PlatformTypes"
     val DocumentType  = "DocumentType"
 
-    val values = IndexedSeq(Name, Owner, PlatformTypes, DocumentType)
+    val values = js.Object.freeze(js.Array(Name, Owner, PlatformTypes, DocumentType))
   }
 
   object DocumentFormatEnum {
     val YAML = "YAML"
     val JSON = "JSON"
 
-    val values = IndexedSeq(YAML, JSON)
+    val values = js.Object.freeze(js.Array(YAML, JSON))
   }
 
   object DocumentHashTypeEnum {
     val Sha256 = "Sha256"
     val Sha1   = "Sha1"
 
-    val values = IndexedSeq(Sha256, Sha1)
+    val values = js.Object.freeze(js.Array(Sha256, Sha1))
   }
 
   /**
@@ -5034,13 +5040,13 @@ package ssm {
     val String     = "String"
     val StringList = "StringList"
 
-    val values = IndexedSeq(String, StringList)
+    val values = js.Object.freeze(js.Array(String, StringList))
   }
 
   object DocumentPermissionTypeEnum {
     val Share = "Share"
 
-    val values = IndexedSeq(Share)
+    val values = js.Object.freeze(js.Array(Share))
   }
 
   /**
@@ -5053,7 +5059,7 @@ package ssm {
     val Deleting = "Deleting"
     val Failed   = "Failed"
 
-    val values = IndexedSeq(Creating, Active, Updating, Deleting, Failed)
+    val values = js.Object.freeze(js.Array(Creating, Active, Updating, Deleting, Failed))
   }
 
   object DocumentTypeEnum {
@@ -5063,7 +5069,7 @@ package ssm {
     val Session    = "Session"
     val Package    = "Package"
 
-    val values = IndexedSeq(Command, Policy, Automation, Session, Package)
+    val values = js.Object.freeze(js.Array(Command, Policy, Automation, Session, Package))
   }
 
   /**
@@ -5130,7 +5136,7 @@ package ssm {
     val Auto        = "Auto"
     val Interactive = "Interactive"
 
-    val values = IndexedSeq(Auto, Interactive)
+    val values = js.Object.freeze(js.Array(Auto, Interactive))
   }
 
   /**
@@ -5186,7 +5192,7 @@ package ssm {
     val Server  = "Server"
     val Unknown = "Unknown"
 
-    val values = IndexedSeq(Client, Server, Unknown)
+    val values = js.Object.freeze(js.Array(Client, Server, Unknown))
   }
 
   @js.native
@@ -6555,15 +6561,17 @@ package ssm {
     val ResourceType      = "ResourceType"
     val AssociationStatus = "AssociationStatus"
 
-    val values = IndexedSeq(
-      InstanceIds,
-      AgentVersion,
-      PingStatus,
-      PlatformTypes,
-      ActivationIds,
-      IamRole,
-      ResourceType,
-      AssociationStatus
+    val values = js.Object.freeze(
+      js.Array(
+        InstanceIds,
+        AgentVersion,
+        PingStatus,
+        PlatformTypes,
+        ActivationIds,
+        IamRole,
+        ResourceType,
+        AssociationStatus
+      )
     )
   }
 
@@ -6689,7 +6697,7 @@ package ssm {
     val LessThan    = "LessThan"
     val GreaterThan = "GreaterThan"
 
-    val values = IndexedSeq(Equal, NotEqual, LessThan, GreaterThan)
+    val values = js.Object.freeze(js.Array(Equal, NotEqual, LessThan, GreaterThan))
   }
 
   /**
@@ -6720,14 +6728,14 @@ package ssm {
     val string = "string"
     val number = "number"
 
-    val values = IndexedSeq(string, number)
+    val values = js.Object.freeze(js.Array(string, number))
   }
 
   object InventoryDeletionStatusEnum {
     val InProgress = "InProgress"
     val Complete   = "Complete"
 
-    val values = IndexedSeq(InProgress, Complete)
+    val values = js.Object.freeze(js.Array(InProgress, Complete))
   }
 
   /**
@@ -6958,7 +6966,7 @@ package ssm {
     val GreaterThan = "GreaterThan"
     val Exists      = "Exists"
 
-    val values = IndexedSeq(Equal, NotEqual, BeginWith, LessThan, GreaterThan, Exists)
+    val values = js.Object.freeze(js.Array(Equal, NotEqual, BeginWith, LessThan, GreaterThan, Exists))
   }
 
   /**
@@ -7018,7 +7026,7 @@ package ssm {
     val DisableSchema = "DisableSchema"
     val DeleteSchema  = "DeleteSchema"
 
-    val values = IndexedSeq(DisableSchema, DeleteSchema)
+    val values = js.Object.freeze(js.Array(DisableSchema, DeleteSchema))
   }
 
   @js.native
@@ -7064,7 +7072,7 @@ package ssm {
     val Failed     = "Failed"
     val InProgress = "InProgress"
 
-    val values = IndexedSeq(Successful, Failed, InProgress)
+    val values = js.Object.freeze(js.Array(Successful, Failed, InProgress))
   }
 
   @js.native
@@ -7670,8 +7678,9 @@ package ssm {
     val CANCELLED           = "CANCELLED"
     val SKIPPED_OVERLAPPING = "SKIPPED_OVERLAPPING"
 
-    val values =
-      IndexedSeq(PENDING, IN_PROGRESS, SUCCESS, FAILED, TIMED_OUT, CANCELLING, CANCELLED, SKIPPED_OVERLAPPING)
+    val values = js.Object.freeze(
+      js.Array(PENDING, IN_PROGRESS, SUCCESS, FAILED, TIMED_OUT, CANCELLING, CANCELLED, SKIPPED_OVERLAPPING)
+    )
   }
 
   /**
@@ -7887,7 +7896,7 @@ package ssm {
     val INSTANCE       = "INSTANCE"
     val RESOURCE_GROUP = "RESOURCE_GROUP"
 
-    val values = IndexedSeq(INSTANCE, RESOURCE_GROUP)
+    val values = js.Object.freeze(js.Array(INSTANCE, RESOURCE_GROUP))
   }
 
   /**
@@ -8104,7 +8113,7 @@ package ssm {
     val STEP_FUNCTIONS = "STEP_FUNCTIONS"
     val LAMBDA         = "LAMBDA"
 
-    val values = IndexedSeq(RUN_COMMAND, AUTOMATION, STEP_FUNCTIONS, LAMBDA)
+    val values = js.Object.freeze(js.Array(RUN_COMMAND, AUTOMATION, STEP_FUNCTIONS, LAMBDA))
   }
 
   @js.native
@@ -8198,14 +8207,14 @@ package ssm {
     val Cancelled  = "Cancelled"
     val Failed     = "Failed"
 
-    val values = IndexedSeq(All, InProgress, Success, TimedOut, Cancelled, Failed)
+    val values = js.Object.freeze(js.Array(All, InProgress, Success, TimedOut, Cancelled, Failed))
   }
 
   object NotificationTypeEnum {
     val Command    = "Command"
     val Invocation = "Invocation"
 
-    val values = IndexedSeq(Command, Invocation)
+    val values = js.Object.freeze(js.Array(Command, Invocation))
   }
 
   object OperatingSystemEnum {
@@ -8217,7 +8226,8 @@ package ssm {
     val SUSE                    = "SUSE"
     val CENTOS                  = "CENTOS"
 
-    val values = IndexedSeq(WINDOWS, AMAZON_LINUX, AMAZON_LINUX_2, UBUNTU, REDHAT_ENTERPRISE_LINUX, SUSE, CENTOS)
+    val values =
+      js.Object.freeze(js.Array(WINDOWS, AMAZON_LINUX, AMAZON_LINUX_2, UBUNTU, REDHAT_ENTERPRISE_LINUX, SUSE, CENTOS))
   }
 
   /**
@@ -8326,7 +8336,7 @@ package ssm {
     val GreaterThan = "GreaterThan"
     val Exists      = "Exists"
 
-    val values = IndexedSeq(Equal, NotEqual, BeginWith, LessThan, GreaterThan, Exists)
+    val values = js.Object.freeze(js.Array(Equal, NotEqual, BeginWith, LessThan, GreaterThan, Exists))
   }
 
   /**
@@ -8390,7 +8400,7 @@ package ssm {
     val SearchableString = "SearchableString"
     val String           = "String"
 
-    val values = IndexedSeq(SearchableString, String)
+    val values = js.Object.freeze(js.Array(SearchableString, String))
   }
 
   /**
@@ -8455,20 +8465,22 @@ package ssm {
     val ResourceId           = "ResourceId"
     val AutomationId         = "AutomationId"
 
-    val values = IndexedSeq(
-      Status,
-      CreatedBy,
-      Source,
-      Priority,
-      Title,
-      OpsItemId,
-      CreatedTime,
-      LastModifiedTime,
-      OperationalData,
-      OperationalDataKey,
-      OperationalDataValue,
-      ResourceId,
-      AutomationId
+    val values = js.Object.freeze(
+      js.Array(
+        Status,
+        CreatedBy,
+        Source,
+        Priority,
+        Title,
+        OpsItemId,
+        CreatedTime,
+        LastModifiedTime,
+        OperationalData,
+        OperationalDataKey,
+        OperationalDataValue,
+        ResourceId,
+        AutomationId
+      )
     )
   }
 
@@ -8478,7 +8490,7 @@ package ssm {
     val GreaterThan = "GreaterThan"
     val LessThan    = "LessThan"
 
-    val values = IndexedSeq(Equal, Contains, GreaterThan, LessThan)
+    val values = js.Object.freeze(js.Array(Equal, Contains, GreaterThan, LessThan))
   }
 
   /**
@@ -8504,7 +8516,7 @@ package ssm {
     val InProgress = "InProgress"
     val Resolved   = "Resolved"
 
-    val values = IndexedSeq(Open, InProgress, Resolved)
+    val values = js.Object.freeze(js.Array(Open, InProgress, Resolved))
   }
 
   /**
@@ -8765,7 +8777,7 @@ package ssm {
     val Advanced              = "Advanced"
     val `Intelligent-Tiering` = "Intelligent-Tiering"
 
-    val values = IndexedSeq(Standard, Advanced, `Intelligent-Tiering`)
+    val values = js.Object.freeze(js.Array(Standard, Advanced, `Intelligent-Tiering`))
   }
 
   object ParameterTypeEnum {
@@ -8773,7 +8785,7 @@ package ssm {
     val StringList   = "StringList"
     val SecureString = "SecureString"
 
-    val values = IndexedSeq(String, StringList, SecureString)
+    val values = js.Object.freeze(js.Array(String, StringList, SecureString))
   }
 
   /**
@@ -8804,7 +8816,7 @@ package ssm {
     val Type  = "Type"
     val KeyId = "KeyId"
 
-    val values = IndexedSeq(Name, Type, KeyId)
+    val values = js.Object.freeze(js.Array(Name, Type, KeyId))
   }
 
   /**
@@ -8865,7 +8877,7 @@ package ssm {
     val ALLOW_AS_DEPENDENCY = "ALLOW_AS_DEPENDENCY"
     val BLOCK               = "BLOCK"
 
-    val values = IndexedSeq(ALLOW_AS_DEPENDENCY, BLOCK)
+    val values = js.Object.freeze(js.Array(ALLOW_AS_DEPENDENCY, BLOCK))
   }
 
   /**
@@ -8941,7 +8953,8 @@ package ssm {
     val NOT_APPLICABLE     = "NOT_APPLICABLE"
     val FAILED             = "FAILED"
 
-    val values = IndexedSeq(INSTALLED, INSTALLED_OTHER, INSTALLED_REJECTED, MISSING, NOT_APPLICABLE, FAILED)
+    val values =
+      js.Object.freeze(js.Array(INSTALLED, INSTALLED_OTHER, INSTALLED_REJECTED, MISSING, NOT_APPLICABLE, FAILED))
   }
 
   object PatchComplianceLevelEnum {
@@ -8952,7 +8965,7 @@ package ssm {
     val INFORMATIONAL = "INFORMATIONAL"
     val UNSPECIFIED   = "UNSPECIFIED"
 
-    val values = IndexedSeq(CRITICAL, HIGH, MEDIUM, LOW, INFORMATIONAL, UNSPECIFIED)
+    val values = js.Object.freeze(js.Array(CRITICAL, HIGH, MEDIUM, LOW, INFORMATIONAL, UNSPECIFIED))
   }
 
   object PatchDeploymentStatusEnum {
@@ -8961,7 +8974,7 @@ package ssm {
     val EXPLICIT_APPROVED = "EXPLICIT_APPROVED"
     val EXPLICIT_REJECTED = "EXPLICIT_REJECTED"
 
-    val values = IndexedSeq(APPROVED, PENDING_APPROVAL, EXPLICIT_APPROVED, EXPLICIT_REJECTED)
+    val values = js.Object.freeze(js.Array(APPROVED, PENDING_APPROVAL, EXPLICIT_APPROVED, EXPLICIT_REJECTED))
   }
 
   /**
@@ -9020,16 +9033,8 @@ package ssm {
     val PRIORITY       = "PRIORITY"
     val SEVERITY       = "SEVERITY"
 
-    val values = IndexedSeq(
-      PATCH_SET,
-      PRODUCT,
-      PRODUCT_FAMILY,
-      CLASSIFICATION,
-      MSRC_SEVERITY,
-      PATCH_ID,
-      SECTION,
-      PRIORITY,
-      SEVERITY
+    val values = js.Object.freeze(
+      js.Array(PATCH_SET, PRODUCT, PRODUCT_FAMILY, CLASSIFICATION, MSRC_SEVERITY, PATCH_ID, SECTION, PRIORITY, SEVERITY)
     )
   }
 
@@ -9058,7 +9063,7 @@ package ssm {
     val Scan    = "Scan"
     val Install = "Install"
 
-    val values = IndexedSeq(Scan, Install)
+    val values = js.Object.freeze(js.Array(Scan, Install))
   }
 
   /**
@@ -9090,7 +9095,7 @@ package ssm {
     val PRIORITY       = "PRIORITY"
     val SEVERITY       = "SEVERITY"
 
-    val values = IndexedSeq(PRODUCT, PRODUCT_FAMILY, CLASSIFICATION, MSRC_SEVERITY, PRIORITY, SEVERITY)
+    val values = js.Object.freeze(js.Array(PRODUCT, PRODUCT_FAMILY, CLASSIFICATION, MSRC_SEVERITY, PRIORITY, SEVERITY))
   }
 
   /**
@@ -9146,7 +9151,7 @@ package ssm {
     val OS          = "OS"
     val APPLICATION = "APPLICATION"
 
-    val values = IndexedSeq(OS, APPLICATION)
+    val values = js.Object.freeze(js.Array(OS, APPLICATION))
   }
 
   /**
@@ -9204,14 +9209,14 @@ package ssm {
     val ConnectionLost = "ConnectionLost"
     val Inactive       = "Inactive"
 
-    val values = IndexedSeq(Online, ConnectionLost, Inactive)
+    val values = js.Object.freeze(js.Array(Online, ConnectionLost, Inactive))
   }
 
   object PlatformTypeEnum {
     val Windows = "Windows"
     val Linux   = "Linux"
 
-    val values = IndexedSeq(Windows, Linux)
+    val values = js.Object.freeze(js.Array(Windows, Linux))
   }
 
   /**
@@ -9797,7 +9802,7 @@ package ssm {
   object ResourceDataSyncS3FormatEnum {
     val JsonSerDe = "JsonSerDe"
 
-    val values = IndexedSeq(JsonSerDe)
+    val values = js.Object.freeze(js.Array(JsonSerDe))
   }
 
   object ResourceTypeEnum {
@@ -9805,7 +9810,7 @@ package ssm {
     val Document        = "Document"
     val EC2Instance     = "EC2Instance"
 
-    val values = IndexedSeq(ManagedInstance, Document, EC2Instance)
+    val values = js.Object.freeze(js.Array(ManagedInstance, Document, EC2Instance))
   }
 
   object ResourceTypeForTaggingEnum {
@@ -9816,7 +9821,8 @@ package ssm {
     val PatchBaseline     = "PatchBaseline"
     val OpsItem           = "OpsItem"
 
-    val values = IndexedSeq(Document, ManagedInstance, MaintenanceWindow, Parameter, PatchBaseline, OpsItem)
+    val values =
+      js.Object.freeze(js.Array(Document, ManagedInstance, MaintenanceWindow, Parameter, PatchBaseline, OpsItem))
   }
 
   /**
@@ -10165,7 +10171,7 @@ package ssm {
     val Owner         = "Owner"
     val Status        = "Status"
 
-    val values = IndexedSeq(InvokedAfter, InvokedBefore, Target, Owner, Status)
+    val values = js.Object.freeze(js.Array(InvokedAfter, InvokedBefore, Target, Owner, Status))
   }
 
   /**
@@ -10193,7 +10199,7 @@ package ssm {
     val Active  = "Active"
     val History = "History"
 
-    val values = IndexedSeq(Active, History)
+    val values = js.Object.freeze(js.Array(Active, History))
   }
 
   object SessionStatusEnum {
@@ -10204,7 +10210,7 @@ package ssm {
     val Terminating  = "Terminating"
     val Failed       = "Failed"
 
-    val values = IndexedSeq(Connected, Connecting, Disconnected, Terminated, Terminating, Failed)
+    val values = js.Object.freeze(js.Array(Connected, Connecting, Disconnected, Terminated, Terminating, Failed))
   }
 
   /**
@@ -10247,7 +10253,7 @@ package ssm {
     val StopStep  = "StopStep"
     val Resume    = "Resume"
 
-    val values = IndexedSeq(Approve, Reject, StartStep, StopStep, Resume)
+    val values = js.Object.freeze(js.Array(Approve, Reject, StartStep, StopStep, Resume))
   }
 
   @js.native
@@ -10497,7 +10503,9 @@ package ssm {
     val StepName            = "StepName"
     val Action              = "Action"
 
-    val values = IndexedSeq(StartTimeBefore, StartTimeAfter, StepExecutionStatus, StepExecutionId, StepName, Action)
+    val values = js.Object.freeze(
+      js.Array(StartTimeBefore, StartTimeAfter, StepExecutionStatus, StepExecutionId, StepName, Action)
+    )
   }
 
   @js.native
@@ -10536,7 +10544,7 @@ package ssm {
     val Complete = "Complete"
     val Cancel   = "Cancel"
 
-    val values = IndexedSeq(Complete, Cancel)
+    val values = js.Object.freeze(js.Array(Complete, Cancel))
   }
 
   /**
diff --git a/services/stepfunctions/src/main/scala/facade/amazonaws/services/StepFunctions.scala b/services/stepfunctions/src/main/scala/facade/amazonaws/services/StepFunctions.scala
index 584f9201f..eb3a4cd4a 100644
--- a/services/stepfunctions/src/main/scala/facade/amazonaws/services/StepFunctions.scala
+++ b/services/stepfunctions/src/main/scala/facade/amazonaws/services/StepFunctions.scala
@@ -712,7 +712,7 @@ package stepfunctions {
     val TIMED_OUT = "TIMED_OUT"
     val ABORTED   = "ABORTED"
 
-    val values = IndexedSeq(RUNNING, SUCCEEDED, FAILED, TIMED_OUT, ABORTED)
+    val values = js.Object.freeze(js.Array(RUNNING, SUCCEEDED, FAILED, TIMED_OUT, ABORTED))
   }
 
   /**
@@ -1025,52 +1025,54 @@ package stepfunctions {
     val WaitStateEntered             = "WaitStateEntered"
     val WaitStateExited              = "WaitStateExited"
 
-    val values = IndexedSeq(
-      ActivityFailed,
-      ActivityScheduleFailed,
-      ActivityScheduled,
-      ActivityStarted,
-      ActivitySucceeded,
-      ActivityTimedOut,
-      ChoiceStateEntered,
-      ChoiceStateExited,
-      TaskFailed,
-      TaskScheduled,
-      TaskStartFailed,
-      TaskStarted,
-      TaskSubmitFailed,
-      TaskSubmitted,
-      TaskSucceeded,
-      TaskTimedOut,
-      ExecutionFailed,
-      ExecutionStarted,
-      ExecutionSucceeded,
-      ExecutionAborted,
-      ExecutionTimedOut,
-      FailStateEntered,
-      LambdaFunctionFailed,
-      LambdaFunctionScheduleFailed,
-      LambdaFunctionScheduled,
-      LambdaFunctionStartFailed,
-      LambdaFunctionStarted,
-      LambdaFunctionSucceeded,
-      LambdaFunctionTimedOut,
-      SucceedStateEntered,
-      SucceedStateExited,
-      TaskStateAborted,
-      TaskStateEntered,
-      TaskStateExited,
-      PassStateEntered,
-      PassStateExited,
-      ParallelStateAborted,
-      ParallelStateEntered,
-      ParallelStateExited,
-      ParallelStateFailed,
-      ParallelStateStarted,
-      ParallelStateSucceeded,
-      WaitStateAborted,
-      WaitStateEntered,
-      WaitStateExited
+    val values = js.Object.freeze(
+      js.Array(
+        ActivityFailed,
+        ActivityScheduleFailed,
+        ActivityScheduled,
+        ActivityStarted,
+        ActivitySucceeded,
+        ActivityTimedOut,
+        ChoiceStateEntered,
+        ChoiceStateExited,
+        TaskFailed,
+        TaskScheduled,
+        TaskStartFailed,
+        TaskStarted,
+        TaskSubmitFailed,
+        TaskSubmitted,
+        TaskSucceeded,
+        TaskTimedOut,
+        ExecutionFailed,
+        ExecutionStarted,
+        ExecutionSucceeded,
+        ExecutionAborted,
+        ExecutionTimedOut,
+        FailStateEntered,
+        LambdaFunctionFailed,
+        LambdaFunctionScheduleFailed,
+        LambdaFunctionScheduled,
+        LambdaFunctionStartFailed,
+        LambdaFunctionStarted,
+        LambdaFunctionSucceeded,
+        LambdaFunctionTimedOut,
+        SucceedStateEntered,
+        SucceedStateExited,
+        TaskStateAborted,
+        TaskStateEntered,
+        TaskStateExited,
+        PassStateEntered,
+        PassStateExited,
+        ParallelStateAborted,
+        ParallelStateEntered,
+        ParallelStateExited,
+        ParallelStateFailed,
+        ParallelStateStarted,
+        ParallelStateSucceeded,
+        WaitStateAborted,
+        WaitStateEntered,
+        WaitStateExited
+      )
     )
   }
 
@@ -1571,7 +1573,7 @@ package stepfunctions {
     val ACTIVE   = "ACTIVE"
     val DELETING = "DELETING"
 
-    val values = IndexedSeq(ACTIVE, DELETING)
+    val values = js.Object.freeze(js.Array(ACTIVE, DELETING))
   }
 
   @js.native
diff --git a/services/storagegateway/src/main/scala/facade/amazonaws/services/StorageGateway.scala b/services/storagegateway/src/main/scala/facade/amazonaws/services/StorageGateway.scala
index 174219352..5bb7e95e3 100644
--- a/services/storagegateway/src/main/scala/facade/amazonaws/services/StorageGateway.scala
+++ b/services/storagegateway/src/main/scala/facade/amazonaws/services/StorageGateway.scala
@@ -2570,7 +2570,7 @@ package storagegateway {
     val NFS = "NFS"
     val SMB = "SMB"
 
-    val values = IndexedSeq(NFS, SMB)
+    val values = js.Object.freeze(js.Array(NFS, SMB))
   }
 
   /**
@@ -3163,14 +3163,16 @@ package storagegateway {
     val `bucket-owner-full-control` = "bucket-owner-full-control"
     val `aws-exec-read`             = "aws-exec-read"
 
-    val values = IndexedSeq(
-      `private`,
-      `public-read`,
-      `public-read-write`,
-      `authenticated-read`,
-      `bucket-owner-read`,
-      `bucket-owner-full-control`,
-      `aws-exec-read`
+    val values = js.Object.freeze(
+      js.Array(
+        `private`,
+        `public-read`,
+        `public-read-write`,
+        `authenticated-read`,
+        `bucket-owner-read`,
+        `bucket-owner-full-control`,
+        `aws-exec-read`
+      )
     )
   }
 
@@ -3432,7 +3434,7 @@ package storagegateway {
     val MandatorySigning    = "MandatorySigning"
     val MandatoryEncryption = "MandatoryEncryption"
 
-    val values = IndexedSeq(ClientSpecified, MandatorySigning, MandatoryEncryption)
+    val values = js.Object.freeze(js.Array(ClientSpecified, MandatorySigning, MandatoryEncryption))
   }
 
   @js.native
diff --git a/services/swf/src/main/scala/facade/amazonaws/services/SWF.scala b/services/swf/src/main/scala/facade/amazonaws/services/SWF.scala
index 882b08c25..e4240df9c 100644
--- a/services/swf/src/main/scala/facade/amazonaws/services/SWF.scala
+++ b/services/swf/src/main/scala/facade/amazonaws/services/SWF.scala
@@ -481,7 +481,7 @@ package swf {
     val SCHEDULE_TO_CLOSE = "SCHEDULE_TO_CLOSE"
     val HEARTBEAT         = "HEARTBEAT"
 
-    val values = IndexedSeq(START_TO_CLOSE, SCHEDULE_TO_START, SCHEDULE_TO_CLOSE, HEARTBEAT)
+    val values = js.Object.freeze(js.Array(START_TO_CLOSE, SCHEDULE_TO_START, SCHEDULE_TO_CLOSE, HEARTBEAT))
   }
 
   /**
@@ -654,7 +654,7 @@ package swf {
     val TIMER_ID_UNKNOWN        = "TIMER_ID_UNKNOWN"
     val OPERATION_NOT_PERMITTED = "OPERATION_NOT_PERMITTED"
 
-    val values = IndexedSeq(TIMER_ID_UNKNOWN, OPERATION_NOT_PERMITTED)
+    val values = js.Object.freeze(js.Array(TIMER_ID_UNKNOWN, OPERATION_NOT_PERMITTED))
   }
 
   /**
@@ -711,7 +711,7 @@ package swf {
     val UNHANDLED_DECISION      = "UNHANDLED_DECISION"
     val OPERATION_NOT_PERMITTED = "OPERATION_NOT_PERMITTED"
 
-    val values = IndexedSeq(UNHANDLED_DECISION, OPERATION_NOT_PERMITTED)
+    val values = js.Object.freeze(js.Array(UNHANDLED_DECISION, OPERATION_NOT_PERMITTED))
   }
 
   /**
@@ -742,7 +742,7 @@ package swf {
     val REQUEST_CANCEL = "REQUEST_CANCEL"
     val ABANDON        = "ABANDON"
 
-    val values = IndexedSeq(TERMINATE, REQUEST_CANCEL, ABANDON)
+    val values = js.Object.freeze(js.Array(TERMINATE, REQUEST_CANCEL, ABANDON))
   }
 
   /**
@@ -939,7 +939,7 @@ package swf {
     val CONTINUED_AS_NEW = "CONTINUED_AS_NEW"
     val TIMED_OUT        = "TIMED_OUT"
 
-    val values = IndexedSeq(COMPLETED, FAILED, CANCELED, TERMINATED, CONTINUED_AS_NEW, TIMED_OUT)
+    val values = js.Object.freeze(js.Array(COMPLETED, FAILED, CANCELED, TERMINATED, CONTINUED_AS_NEW, TIMED_OUT))
   }
 
   /**
@@ -990,7 +990,7 @@ package swf {
     val UNHANDLED_DECISION      = "UNHANDLED_DECISION"
     val OPERATION_NOT_PERMITTED = "OPERATION_NOT_PERMITTED"
 
-    val values = IndexedSeq(UNHANDLED_DECISION, OPERATION_NOT_PERMITTED)
+    val values = js.Object.freeze(js.Array(UNHANDLED_DECISION, OPERATION_NOT_PERMITTED))
   }
 
   /**
@@ -1080,16 +1080,18 @@ package swf {
     val CONTINUE_AS_NEW_WORKFLOW_EXECUTION_RATE_EXCEEDED   = "CONTINUE_AS_NEW_WORKFLOW_EXECUTION_RATE_EXCEEDED"
     val OPERATION_NOT_PERMITTED                            = "OPERATION_NOT_PERMITTED"
 
-    val values = IndexedSeq(
-      UNHANDLED_DECISION,
-      WORKFLOW_TYPE_DEPRECATED,
-      WORKFLOW_TYPE_DOES_NOT_EXIST,
-      DEFAULT_EXECUTION_START_TO_CLOSE_TIMEOUT_UNDEFINED,
-      DEFAULT_TASK_START_TO_CLOSE_TIMEOUT_UNDEFINED,
-      DEFAULT_TASK_LIST_UNDEFINED,
-      DEFAULT_CHILD_POLICY_UNDEFINED,
-      CONTINUE_AS_NEW_WORKFLOW_EXECUTION_RATE_EXCEEDED,
-      OPERATION_NOT_PERMITTED
+    val values = js.Object.freeze(
+      js.Array(
+        UNHANDLED_DECISION,
+        WORKFLOW_TYPE_DEPRECATED,
+        WORKFLOW_TYPE_DOES_NOT_EXIST,
+        DEFAULT_EXECUTION_START_TO_CLOSE_TIMEOUT_UNDEFINED,
+        DEFAULT_TASK_START_TO_CLOSE_TIMEOUT_UNDEFINED,
+        DEFAULT_TASK_LIST_UNDEFINED,
+        DEFAULT_CHILD_POLICY_UNDEFINED,
+        CONTINUE_AS_NEW_WORKFLOW_EXECUTION_RATE_EXCEEDED,
+        OPERATION_NOT_PERMITTED
+      )
     )
   }
 
@@ -1505,7 +1507,7 @@ package swf {
   object DecisionTaskTimeoutTypeEnum {
     val START_TO_CLOSE = "START_TO_CLOSE"
 
-    val values = IndexedSeq(START_TO_CLOSE)
+    val values = js.Object.freeze(js.Array(START_TO_CLOSE))
   }
 
   object DecisionTypeEnum {
@@ -1523,20 +1525,22 @@ package swf {
     val StartChildWorkflowExecution            = "StartChildWorkflowExecution"
     val ScheduleLambdaFunction                 = "ScheduleLambdaFunction"
 
-    val values = IndexedSeq(
-      ScheduleActivityTask,
-      RequestCancelActivityTask,
-      CompleteWorkflowExecution,
-      FailWorkflowExecution,
-      CancelWorkflowExecution,
-      ContinueAsNewWorkflowExecution,
-      RecordMarker,
-      StartTimer,
-      CancelTimer,
-      SignalExternalWorkflowExecution,
-      RequestCancelExternalWorkflowExecution,
-      StartChildWorkflowExecution,
-      ScheduleLambdaFunction
+    val values = js.Object.freeze(
+      js.Array(
+        ScheduleActivityTask,
+        RequestCancelActivityTask,
+        CompleteWorkflowExecution,
+        FailWorkflowExecution,
+        CancelWorkflowExecution,
+        ContinueAsNewWorkflowExecution,
+        RecordMarker,
+        StartTimer,
+        CancelTimer,
+        SignalExternalWorkflowExecution,
+        RequestCancelExternalWorkflowExecution,
+        StartChildWorkflowExecution,
+        ScheduleLambdaFunction
+      )
     )
   }
 
@@ -1825,61 +1829,63 @@ package swf {
     val ScheduleLambdaFunctionFailed                    = "ScheduleLambdaFunctionFailed"
     val StartLambdaFunctionFailed                       = "StartLambdaFunctionFailed"
 
-    val values = IndexedSeq(
-      WorkflowExecutionStarted,
-      WorkflowExecutionCancelRequested,
-      WorkflowExecutionCompleted,
-      CompleteWorkflowExecutionFailed,
-      WorkflowExecutionFailed,
-      FailWorkflowExecutionFailed,
-      WorkflowExecutionTimedOut,
-      WorkflowExecutionCanceled,
-      CancelWorkflowExecutionFailed,
-      WorkflowExecutionContinuedAsNew,
-      ContinueAsNewWorkflowExecutionFailed,
-      WorkflowExecutionTerminated,
-      DecisionTaskScheduled,
-      DecisionTaskStarted,
-      DecisionTaskCompleted,
-      DecisionTaskTimedOut,
-      ActivityTaskScheduled,
-      ScheduleActivityTaskFailed,
-      ActivityTaskStarted,
-      ActivityTaskCompleted,
-      ActivityTaskFailed,
-      ActivityTaskTimedOut,
-      ActivityTaskCanceled,
-      ActivityTaskCancelRequested,
-      RequestCancelActivityTaskFailed,
-      WorkflowExecutionSignaled,
-      MarkerRecorded,
-      RecordMarkerFailed,
-      TimerStarted,
-      StartTimerFailed,
-      TimerFired,
-      TimerCanceled,
-      CancelTimerFailed,
-      StartChildWorkflowExecutionInitiated,
-      StartChildWorkflowExecutionFailed,
-      ChildWorkflowExecutionStarted,
-      ChildWorkflowExecutionCompleted,
-      ChildWorkflowExecutionFailed,
-      ChildWorkflowExecutionTimedOut,
-      ChildWorkflowExecutionCanceled,
-      ChildWorkflowExecutionTerminated,
-      SignalExternalWorkflowExecutionInitiated,
-      SignalExternalWorkflowExecutionFailed,
-      ExternalWorkflowExecutionSignaled,
-      RequestCancelExternalWorkflowExecutionInitiated,
-      RequestCancelExternalWorkflowExecutionFailed,
-      ExternalWorkflowExecutionCancelRequested,
-      LambdaFunctionScheduled,
-      LambdaFunctionStarted,
-      LambdaFunctionCompleted,
-      LambdaFunctionFailed,
-      LambdaFunctionTimedOut,
-      ScheduleLambdaFunctionFailed,
-      StartLambdaFunctionFailed
+    val values = js.Object.freeze(
+      js.Array(
+        WorkflowExecutionStarted,
+        WorkflowExecutionCancelRequested,
+        WorkflowExecutionCompleted,
+        CompleteWorkflowExecutionFailed,
+        WorkflowExecutionFailed,
+        FailWorkflowExecutionFailed,
+        WorkflowExecutionTimedOut,
+        WorkflowExecutionCanceled,
+        CancelWorkflowExecutionFailed,
+        WorkflowExecutionContinuedAsNew,
+        ContinueAsNewWorkflowExecutionFailed,
+        WorkflowExecutionTerminated,
+        DecisionTaskScheduled,
+        DecisionTaskStarted,
+        DecisionTaskCompleted,
+        DecisionTaskTimedOut,
+        ActivityTaskScheduled,
+        ScheduleActivityTaskFailed,
+        ActivityTaskStarted,
+        ActivityTaskCompleted,
+        ActivityTaskFailed,
+        ActivityTaskTimedOut,
+        ActivityTaskCanceled,
+        ActivityTaskCancelRequested,
+        RequestCancelActivityTaskFailed,
+        WorkflowExecutionSignaled,
+        MarkerRecorded,
+        RecordMarkerFailed,
+        TimerStarted,
+        StartTimerFailed,
+        TimerFired,
+        TimerCanceled,
+        CancelTimerFailed,
+        StartChildWorkflowExecutionInitiated,
+        StartChildWorkflowExecutionFailed,
+        ChildWorkflowExecutionStarted,
+        ChildWorkflowExecutionCompleted,
+        ChildWorkflowExecutionFailed,
+        ChildWorkflowExecutionTimedOut,
+        ChildWorkflowExecutionCanceled,
+        ChildWorkflowExecutionTerminated,
+        SignalExternalWorkflowExecutionInitiated,
+        SignalExternalWorkflowExecutionFailed,
+        ExternalWorkflowExecutionSignaled,
+        RequestCancelExternalWorkflowExecutionInitiated,
+        RequestCancelExternalWorkflowExecutionFailed,
+        ExternalWorkflowExecutionCancelRequested,
+        LambdaFunctionScheduled,
+        LambdaFunctionStarted,
+        LambdaFunctionCompleted,
+        LambdaFunctionFailed,
+        LambdaFunctionTimedOut,
+        ScheduleLambdaFunctionFailed,
+        StartLambdaFunctionFailed
+      )
     )
   }
 
@@ -1887,7 +1893,7 @@ package swf {
     val OPEN   = "OPEN"
     val CLOSED = "CLOSED"
 
-    val values = IndexedSeq(OPEN, CLOSED)
+    val values = js.Object.freeze(js.Array(OPEN, CLOSED))
   }
 
   /**
@@ -1990,7 +1996,7 @@ package swf {
     val UNHANDLED_DECISION      = "UNHANDLED_DECISION"
     val OPERATION_NOT_PERMITTED = "OPERATION_NOT_PERMITTED"
 
-    val values = IndexedSeq(UNHANDLED_DECISION, OPERATION_NOT_PERMITTED)
+    val values = js.Object.freeze(js.Array(UNHANDLED_DECISION, OPERATION_NOT_PERMITTED))
   }
 
   /**
@@ -2592,7 +2598,7 @@ package swf {
   object LambdaFunctionTimeoutTypeEnum {
     val START_TO_CLOSE = "START_TO_CLOSE"
 
-    val values = IndexedSeq(START_TO_CLOSE)
+    val values = js.Object.freeze(js.Array(START_TO_CLOSE))
   }
 
   @js.native
@@ -2955,7 +2961,7 @@ package swf {
   object RecordMarkerFailedCauseEnum {
     val OPERATION_NOT_PERMITTED = "OPERATION_NOT_PERMITTED"
 
-    val values = IndexedSeq(OPERATION_NOT_PERMITTED)
+    val values = js.Object.freeze(js.Array(OPERATION_NOT_PERMITTED))
   }
 
   /**
@@ -3112,7 +3118,7 @@ package swf {
     val REGISTERED = "REGISTERED"
     val DEPRECATED = "DEPRECATED"
 
-    val values = IndexedSeq(REGISTERED, DEPRECATED)
+    val values = js.Object.freeze(js.Array(REGISTERED, DEPRECATED))
   }
 
   /**
@@ -3145,7 +3151,7 @@ package swf {
     val ACTIVITY_ID_UNKNOWN     = "ACTIVITY_ID_UNKNOWN"
     val OPERATION_NOT_PERMITTED = "OPERATION_NOT_PERMITTED"
 
-    val values = IndexedSeq(ACTIVITY_ID_UNKNOWN, OPERATION_NOT_PERMITTED)
+    val values = js.Object.freeze(js.Array(ACTIVITY_ID_UNKNOWN, OPERATION_NOT_PERMITTED))
   }
 
   /**
@@ -3212,10 +3218,12 @@ package swf {
       "REQUEST_CANCEL_EXTERNAL_WORKFLOW_EXECUTION_RATE_EXCEEDED"
     val OPERATION_NOT_PERMITTED = "OPERATION_NOT_PERMITTED"
 
-    val values = IndexedSeq(
-      UNKNOWN_EXTERNAL_WORKFLOW_EXECUTION,
-      REQUEST_CANCEL_EXTERNAL_WORKFLOW_EXECUTION_RATE_EXCEEDED,
-      OPERATION_NOT_PERMITTED
+    val values = js.Object.freeze(
+      js.Array(
+        UNKNOWN_EXTERNAL_WORKFLOW_EXECUTION,
+        REQUEST_CANCEL_EXTERNAL_WORKFLOW_EXECUTION_RATE_EXCEEDED,
+        OPERATION_NOT_PERMITTED
+      )
     )
   }
 
@@ -3506,18 +3514,20 @@ package swf {
     val DEFAULT_HEARTBEAT_TIMEOUT_UNDEFINED         = "DEFAULT_HEARTBEAT_TIMEOUT_UNDEFINED"
     val OPERATION_NOT_PERMITTED                     = "OPERATION_NOT_PERMITTED"
 
-    val values = IndexedSeq(
-      ACTIVITY_TYPE_DEPRECATED,
-      ACTIVITY_TYPE_DOES_NOT_EXIST,
-      ACTIVITY_ID_ALREADY_IN_USE,
-      OPEN_ACTIVITIES_LIMIT_EXCEEDED,
-      ACTIVITY_CREATION_RATE_EXCEEDED,
-      DEFAULT_SCHEDULE_TO_CLOSE_TIMEOUT_UNDEFINED,
-      DEFAULT_TASK_LIST_UNDEFINED,
-      DEFAULT_SCHEDULE_TO_START_TIMEOUT_UNDEFINED,
-      DEFAULT_START_TO_CLOSE_TIMEOUT_UNDEFINED,
-      DEFAULT_HEARTBEAT_TIMEOUT_UNDEFINED,
-      OPERATION_NOT_PERMITTED
+    val values = js.Object.freeze(
+      js.Array(
+        ACTIVITY_TYPE_DEPRECATED,
+        ACTIVITY_TYPE_DOES_NOT_EXIST,
+        ACTIVITY_ID_ALREADY_IN_USE,
+        OPEN_ACTIVITIES_LIMIT_EXCEEDED,
+        ACTIVITY_CREATION_RATE_EXCEEDED,
+        DEFAULT_SCHEDULE_TO_CLOSE_TIMEOUT_UNDEFINED,
+        DEFAULT_TASK_LIST_UNDEFINED,
+        DEFAULT_SCHEDULE_TO_START_TIMEOUT_UNDEFINED,
+        DEFAULT_START_TO_CLOSE_TIMEOUT_UNDEFINED,
+        DEFAULT_HEARTBEAT_TIMEOUT_UNDEFINED,
+        OPERATION_NOT_PERMITTED
+      )
     )
   }
 
@@ -3588,11 +3598,13 @@ package swf {
     val LAMBDA_FUNCTION_CREATION_RATE_EXCEEDED = "LAMBDA_FUNCTION_CREATION_RATE_EXCEEDED"
     val LAMBDA_SERVICE_NOT_AVAILABLE_IN_REGION = "LAMBDA_SERVICE_NOT_AVAILABLE_IN_REGION"
 
-    val values = IndexedSeq(
-      ID_ALREADY_IN_USE,
-      OPEN_LAMBDA_FUNCTIONS_LIMIT_EXCEEDED,
-      LAMBDA_FUNCTION_CREATION_RATE_EXCEEDED,
-      LAMBDA_SERVICE_NOT_AVAILABLE_IN_REGION
+    val values = js.Object.freeze(
+      js.Array(
+        ID_ALREADY_IN_USE,
+        OPEN_LAMBDA_FUNCTIONS_LIMIT_EXCEEDED,
+        LAMBDA_FUNCTION_CREATION_RATE_EXCEEDED,
+        LAMBDA_SERVICE_NOT_AVAILABLE_IN_REGION
+      )
     )
   }
 
@@ -3668,10 +3680,12 @@ package swf {
     val SIGNAL_EXTERNAL_WORKFLOW_EXECUTION_RATE_EXCEEDED = "SIGNAL_EXTERNAL_WORKFLOW_EXECUTION_RATE_EXCEEDED"
     val OPERATION_NOT_PERMITTED                          = "OPERATION_NOT_PERMITTED"
 
-    val values = IndexedSeq(
-      UNKNOWN_EXTERNAL_WORKFLOW_EXECUTION,
-      SIGNAL_EXTERNAL_WORKFLOW_EXECUTION_RATE_EXCEEDED,
-      OPERATION_NOT_PERMITTED
+    val values = js.Object.freeze(
+      js.Array(
+        UNKNOWN_EXTERNAL_WORKFLOW_EXECUTION,
+        SIGNAL_EXTERNAL_WORKFLOW_EXECUTION_RATE_EXCEEDED,
+        OPERATION_NOT_PERMITTED
+      )
     )
   }
 
@@ -3849,18 +3863,20 @@ package swf {
     val DEFAULT_CHILD_POLICY_UNDEFINED                     = "DEFAULT_CHILD_POLICY_UNDEFINED"
     val OPERATION_NOT_PERMITTED                            = "OPERATION_NOT_PERMITTED"
 
-    val values = IndexedSeq(
-      WORKFLOW_TYPE_DOES_NOT_EXIST,
-      WORKFLOW_TYPE_DEPRECATED,
-      OPEN_CHILDREN_LIMIT_EXCEEDED,
-      OPEN_WORKFLOWS_LIMIT_EXCEEDED,
-      CHILD_CREATION_RATE_EXCEEDED,
-      WORKFLOW_ALREADY_RUNNING,
-      DEFAULT_EXECUTION_START_TO_CLOSE_TIMEOUT_UNDEFINED,
-      DEFAULT_TASK_LIST_UNDEFINED,
-      DEFAULT_TASK_START_TO_CLOSE_TIMEOUT_UNDEFINED,
-      DEFAULT_CHILD_POLICY_UNDEFINED,
-      OPERATION_NOT_PERMITTED
+    val values = js.Object.freeze(
+      js.Array(
+        WORKFLOW_TYPE_DOES_NOT_EXIST,
+        WORKFLOW_TYPE_DEPRECATED,
+        OPEN_CHILDREN_LIMIT_EXCEEDED,
+        OPEN_WORKFLOWS_LIMIT_EXCEEDED,
+        CHILD_CREATION_RATE_EXCEEDED,
+        WORKFLOW_ALREADY_RUNNING,
+        DEFAULT_EXECUTION_START_TO_CLOSE_TIMEOUT_UNDEFINED,
+        DEFAULT_TASK_LIST_UNDEFINED,
+        DEFAULT_TASK_START_TO_CLOSE_TIMEOUT_UNDEFINED,
+        DEFAULT_CHILD_POLICY_UNDEFINED,
+        OPERATION_NOT_PERMITTED
+      )
     )
   }
 
@@ -3957,7 +3973,7 @@ package swf {
   object StartLambdaFunctionFailedCauseEnum {
     val ASSUME_ROLE_FAILED = "ASSUME_ROLE_FAILED"
 
-    val values = IndexedSeq(ASSUME_ROLE_FAILED)
+    val values = js.Object.freeze(js.Array(ASSUME_ROLE_FAILED))
   }
 
   /**
@@ -4022,11 +4038,13 @@ package swf {
     val TIMER_CREATION_RATE_EXCEEDED = "TIMER_CREATION_RATE_EXCEEDED"
     val OPERATION_NOT_PERMITTED      = "OPERATION_NOT_PERMITTED"
 
-    val values = IndexedSeq(
-      TIMER_ID_ALREADY_IN_USE,
-      OPEN_TIMERS_LIMIT_EXCEEDED,
-      TIMER_CREATION_RATE_EXCEEDED,
-      OPERATION_NOT_PERMITTED
+    val values = js.Object.freeze(
+      js.Array(
+        TIMER_ID_ALREADY_IN_USE,
+        OPEN_TIMERS_LIMIT_EXCEEDED,
+        TIMER_CREATION_RATE_EXCEEDED,
+        OPERATION_NOT_PERMITTED
+      )
     )
   }
 
@@ -4378,7 +4396,7 @@ package swf {
   object WorkflowExecutionCancelRequestedCauseEnum {
     val CHILD_POLICY_APPLIED = "CHILD_POLICY_APPLIED"
 
-    val values = IndexedSeq(CHILD_POLICY_APPLIED)
+    val values = js.Object.freeze(js.Array(CHILD_POLICY_APPLIED))
   }
 
   /**
@@ -4827,7 +4845,7 @@ package swf {
     val EVENT_LIMIT_EXCEEDED = "EVENT_LIMIT_EXCEEDED"
     val OPERATOR_INITIATED   = "OPERATOR_INITIATED"
 
-    val values = IndexedSeq(CHILD_POLICY_APPLIED, EVENT_LIMIT_EXCEEDED, OPERATOR_INITIATED)
+    val values = js.Object.freeze(js.Array(CHILD_POLICY_APPLIED, EVENT_LIMIT_EXCEEDED, OPERATOR_INITIATED))
   }
 
   /**
@@ -4885,7 +4903,7 @@ package swf {
   object WorkflowExecutionTimeoutTypeEnum {
     val START_TO_CLOSE = "START_TO_CLOSE"
 
-    val values = IndexedSeq(START_TO_CLOSE)
+    val values = js.Object.freeze(js.Array(START_TO_CLOSE))
   }
 
   /**
diff --git a/services/textract/src/main/scala/facade/amazonaws/services/Textract.scala b/services/textract/src/main/scala/facade/amazonaws/services/Textract.scala
index 802dbb7ae..716acc2dd 100644
--- a/services/textract/src/main/scala/facade/amazonaws/services/Textract.scala
+++ b/services/textract/src/main/scala/facade/amazonaws/services/Textract.scala
@@ -179,7 +179,7 @@ package textract {
     val CELL              = "CELL"
     val SELECTION_ELEMENT = "SELECTION_ELEMENT"
 
-    val values = IndexedSeq(KEY_VALUE_SET, PAGE, LINE, WORD, TABLE, CELL, SELECTION_ELEMENT)
+    val values = js.Object.freeze(js.Array(KEY_VALUE_SET, PAGE, LINE, WORD, TABLE, CELL, SELECTION_ELEMENT))
   }
 
   /**
@@ -313,14 +313,14 @@ package textract {
     val KEY   = "KEY"
     val VALUE = "VALUE"
 
-    val values = IndexedSeq(KEY, VALUE)
+    val values = js.Object.freeze(js.Array(KEY, VALUE))
   }
 
   object FeatureTypeEnum {
     val TABLES = "TABLES"
     val FORMS  = "FORMS"
 
-    val values = IndexedSeq(TABLES, FORMS)
+    val values = js.Object.freeze(js.Array(TABLES, FORMS))
   }
 
   /**
@@ -456,7 +456,7 @@ package textract {
     val FAILED          = "FAILED"
     val PARTIAL_SUCCESS = "PARTIAL_SUCCESS"
 
-    val values = IndexedSeq(IN_PROGRESS, SUCCEEDED, FAILED, PARTIAL_SUCCESS)
+    val values = js.Object.freeze(js.Array(IN_PROGRESS, SUCCEEDED, FAILED, PARTIAL_SUCCESS))
   }
 
   /**
@@ -530,7 +530,7 @@ package textract {
     val VALUE = "VALUE"
     val CHILD = "CHILD"
 
-    val values = IndexedSeq(VALUE, CHILD)
+    val values = js.Object.freeze(js.Array(VALUE, CHILD))
   }
 
   /**
@@ -563,7 +563,7 @@ package textract {
     val SELECTED     = "SELECTED"
     val NOT_SELECTED = "NOT_SELECTED"
 
-    val values = IndexedSeq(SELECTED, NOT_SELECTED)
+    val values = js.Object.freeze(js.Array(SELECTED, NOT_SELECTED))
   }
 
   @js.native
diff --git a/services/transcribeservice/src/main/scala/facade/amazonaws/services/TranscribeService.scala b/services/transcribeservice/src/main/scala/facade/amazonaws/services/TranscribeService.scala
index cab31c115..ba68e5905 100644
--- a/services/transcribeservice/src/main/scala/facade/amazonaws/services/TranscribeService.scala
+++ b/services/transcribeservice/src/main/scala/facade/amazonaws/services/TranscribeService.scala
@@ -252,23 +252,25 @@ package transcribeservice {
     val `ru-RU` = "ru-RU"
     val `zh-CN` = "zh-CN"
 
-    val values = IndexedSeq(
-      `en-US`,
-      `es-US`,
-      `en-AU`,
-      `fr-CA`,
-      `en-GB`,
-      `de-DE`,
-      `pt-BR`,
-      `fr-FR`,
-      `it-IT`,
-      `ko-KR`,
-      `es-ES`,
-      `en-IN`,
-      `hi-IN`,
-      `ar-SA`,
-      `ru-RU`,
-      `zh-CN`
+    val values = js.Object.freeze(
+      js.Array(
+        `en-US`,
+        `es-US`,
+        `en-AU`,
+        `fr-CA`,
+        `en-GB`,
+        `de-DE`,
+        `pt-BR`,
+        `fr-FR`,
+        `it-IT`,
+        `ko-KR`,
+        `es-ES`,
+        `en-IN`,
+        `hi-IN`,
+        `ar-SA`,
+        `ru-RU`,
+        `zh-CN`
+      )
     )
   }
 
@@ -386,14 +388,14 @@ package transcribeservice {
     val wav  = "wav"
     val flac = "flac"
 
-    val values = IndexedSeq(mp3, mp4, wav, flac)
+    val values = js.Object.freeze(js.Array(mp3, mp4, wav, flac))
   }
 
   object OutputLocationTypeEnum {
     val CUSTOMER_BUCKET = "CUSTOMER_BUCKET"
     val SERVICE_BUCKET  = "SERVICE_BUCKET"
 
-    val values = IndexedSeq(CUSTOMER_BUCKET, SERVICE_BUCKET)
+    val values = js.Object.freeze(js.Array(CUSTOMER_BUCKET, SERVICE_BUCKET))
   }
 
   /**
@@ -544,7 +546,7 @@ package transcribeservice {
     val FAILED      = "FAILED"
     val COMPLETED   = "COMPLETED"
 
-    val values = IndexedSeq(IN_PROGRESS, FAILED, COMPLETED)
+    val values = js.Object.freeze(js.Array(IN_PROGRESS, FAILED, COMPLETED))
   }
 
   /**
@@ -665,6 +667,6 @@ package transcribeservice {
     val READY   = "READY"
     val FAILED  = "FAILED"
 
-    val values = IndexedSeq(PENDING, READY, FAILED)
+    val values = js.Object.freeze(js.Array(PENDING, READY, FAILED))
   }
 }
diff --git a/services/transfer/src/main/scala/facade/amazonaws/services/Transfer.scala b/services/transfer/src/main/scala/facade/amazonaws/services/Transfer.scala
index eaca28f5f..9c0d46981 100644
--- a/services/transfer/src/main/scala/facade/amazonaws/services/Transfer.scala
+++ b/services/transfer/src/main/scala/facade/amazonaws/services/Transfer.scala
@@ -453,7 +453,7 @@ package transfer {
     val PUBLIC       = "PUBLIC"
     val VPC_ENDPOINT = "VPC_ENDPOINT"
 
-    val values = IndexedSeq(PUBLIC, VPC_ENDPOINT)
+    val values = js.Object.freeze(js.Array(PUBLIC, VPC_ENDPOINT))
   }
 
   /**
@@ -484,7 +484,7 @@ package transfer {
     val SERVICE_MANAGED = "SERVICE_MANAGED"
     val API_GATEWAY     = "API_GATEWAY"
 
-    val values = IndexedSeq(SERVICE_MANAGED, API_GATEWAY)
+    val values = js.Object.freeze(js.Array(SERVICE_MANAGED, API_GATEWAY))
   }
 
   @js.native
@@ -789,7 +789,7 @@ package transfer {
     val START_FAILED = "START_FAILED"
     val STOP_FAILED  = "STOP_FAILED"
 
-    val values = IndexedSeq(OFFLINE, ONLINE, STARTING, STOPPING, START_FAILED, STOP_FAILED)
+    val values = js.Object.freeze(js.Array(OFFLINE, ONLINE, STARTING, STOPPING, START_FAILED, STOP_FAILED))
   }
 
   @js.native
diff --git a/services/translate/src/main/scala/facade/amazonaws/services/Translate.scala b/services/translate/src/main/scala/facade/amazonaws/services/Translate.scala
index 6d7d180d7..5e8d800c8 100644
--- a/services/translate/src/main/scala/facade/amazonaws/services/Translate.scala
+++ b/services/translate/src/main/scala/facade/amazonaws/services/Translate.scala
@@ -120,7 +120,7 @@ package translate {
   object EncryptionKeyTypeEnum {
     val KMS = "KMS"
 
-    val values = IndexedSeq(KMS)
+    val values = js.Object.freeze(js.Array(KMS))
   }
 
   @js.native
@@ -244,7 +244,7 @@ package translate {
   object MergeStrategyEnum {
     val OVERWRITE = "OVERWRITE"
 
-    val values = IndexedSeq(OVERWRITE)
+    val values = js.Object.freeze(js.Array(OVERWRITE))
   }
 
   /**
@@ -295,7 +295,7 @@ package translate {
     val CSV = "CSV"
     val TMX = "TMX"
 
-    val values = IndexedSeq(CSV, TMX)
+    val values = js.Object.freeze(js.Array(CSV, TMX))
   }
 
   /**
diff --git a/services/waf/src/main/scala/facade/amazonaws/services/WAF.scala b/services/waf/src/main/scala/facade/amazonaws/services/WAF.scala
index 4a664995d..df9b762d7 100644
--- a/services/waf/src/main/scala/facade/amazonaws/services/WAF.scala
+++ b/services/waf/src/main/scala/facade/amazonaws/services/WAF.scala
@@ -512,7 +512,7 @@ package waf {
     val INSERT = "INSERT"
     val DELETE = "DELETE"
 
-    val values = IndexedSeq(INSERT, DELETE)
+    val values = js.Object.freeze(js.Array(INSERT, DELETE))
   }
 
   object ChangeTokenStatusEnum {
@@ -520,7 +520,7 @@ package waf {
     val PENDING     = "PENDING"
     val INSYNC      = "INSYNC"
 
-    val values = IndexedSeq(PROVISIONED, PENDING, INSYNC)
+    val values = js.Object.freeze(js.Array(PROVISIONED, PENDING, INSYNC))
   }
 
   object ComparisonOperatorEnum {
@@ -531,7 +531,7 @@ package waf {
     val GE = "GE"
     val GT = "GT"
 
-    val values = IndexedSeq(EQ, NE, LE, LT, GE, GT)
+    val values = js.Object.freeze(js.Array(EQ, NE, LE, LT, GE, GT))
   }
 
   @js.native
@@ -1594,7 +1594,7 @@ package waf {
   object GeoMatchConstraintTypeEnum {
     val Country = "Country"
 
-    val values = IndexedSeq(Country)
+    val values = js.Object.freeze(js.Array(Country))
   }
 
   object GeoMatchConstraintValueEnum {
@@ -1848,256 +1848,258 @@ package waf {
     val ZM = "ZM"
     val ZW = "ZW"
 
-    val values = IndexedSeq(
-      AF,
-      AX,
-      AL,
-      DZ,
-      AS,
-      AD,
-      AO,
-      AI,
-      AQ,
-      AG,
-      AR,
-      AM,
-      AW,
-      AU,
-      AT,
-      AZ,
-      BS,
-      BH,
-      BD,
-      BB,
-      BY,
-      BE,
-      BZ,
-      BJ,
-      BM,
-      BT,
-      BO,
-      BQ,
-      BA,
-      BW,
-      BV,
-      BR,
-      IO,
-      BN,
-      BG,
-      BF,
-      BI,
-      KH,
-      CM,
-      CA,
-      CV,
-      KY,
-      CF,
-      TD,
-      CL,
-      CN,
-      CX,
-      CC,
-      CO,
-      KM,
-      CG,
-      CD,
-      CK,
-      CR,
-      CI,
-      HR,
-      CU,
-      CW,
-      CY,
-      CZ,
-      DK,
-      DJ,
-      DM,
-      DO,
-      EC,
-      EG,
-      SV,
-      GQ,
-      ER,
-      EE,
-      ET,
-      FK,
-      FO,
-      FJ,
-      FI,
-      FR,
-      GF,
-      PF,
-      TF,
-      GA,
-      GM,
-      GE,
-      DE,
-      GH,
-      GI,
-      GR,
-      GL,
-      GD,
-      GP,
-      GU,
-      GT,
-      GG,
-      GN,
-      GW,
-      GY,
-      HT,
-      HM,
-      VA,
-      HN,
-      HK,
-      HU,
-      IS,
-      IN,
-      ID,
-      IR,
-      IQ,
-      IE,
-      IM,
-      IL,
-      IT,
-      JM,
-      JP,
-      JE,
-      JO,
-      KZ,
-      KE,
-      KI,
-      KP,
-      KR,
-      KW,
-      KG,
-      LA,
-      LV,
-      LB,
-      LS,
-      LR,
-      LY,
-      LI,
-      LT,
-      LU,
-      MO,
-      MK,
-      MG,
-      MW,
-      MY,
-      MV,
-      ML,
-      MT,
-      MH,
-      MQ,
-      MR,
-      MU,
-      YT,
-      MX,
-      FM,
-      MD,
-      MC,
-      MN,
-      ME,
-      MS,
-      MA,
-      MZ,
-      MM,
-      NA,
-      NR,
-      NP,
-      NL,
-      NC,
-      NZ,
-      NI,
-      NE,
-      NG,
-      NU,
-      NF,
-      MP,
-      NO,
-      OM,
-      PK,
-      PW,
-      PS,
-      PA,
-      PG,
-      PY,
-      PE,
-      PH,
-      PN,
-      PL,
-      PT,
-      PR,
-      QA,
-      RE,
-      RO,
-      RU,
-      RW,
-      BL,
-      SH,
-      KN,
-      LC,
-      MF,
-      PM,
-      VC,
-      WS,
-      SM,
-      ST,
-      SA,
-      SN,
-      RS,
-      SC,
-      SL,
-      SG,
-      SX,
-      SK,
-      SI,
-      SB,
-      SO,
-      ZA,
-      GS,
-      SS,
-      ES,
-      LK,
-      SD,
-      SR,
-      SJ,
-      SZ,
-      SE,
-      CH,
-      SY,
-      TW,
-      TJ,
-      TZ,
-      TH,
-      TL,
-      TG,
-      TK,
-      TO,
-      TT,
-      TN,
-      TR,
-      TM,
-      TC,
-      TV,
-      UG,
-      UA,
-      AE,
-      GB,
-      US,
-      UM,
-      UY,
-      UZ,
-      VU,
-      VE,
-      VN,
-      VG,
-      VI,
-      WF,
-      EH,
-      YE,
-      ZM,
-      ZW
+    val values = js.Object.freeze(
+      js.Array(
+        AF,
+        AX,
+        AL,
+        DZ,
+        AS,
+        AD,
+        AO,
+        AI,
+        AQ,
+        AG,
+        AR,
+        AM,
+        AW,
+        AU,
+        AT,
+        AZ,
+        BS,
+        BH,
+        BD,
+        BB,
+        BY,
+        BE,
+        BZ,
+        BJ,
+        BM,
+        BT,
+        BO,
+        BQ,
+        BA,
+        BW,
+        BV,
+        BR,
+        IO,
+        BN,
+        BG,
+        BF,
+        BI,
+        KH,
+        CM,
+        CA,
+        CV,
+        KY,
+        CF,
+        TD,
+        CL,
+        CN,
+        CX,
+        CC,
+        CO,
+        KM,
+        CG,
+        CD,
+        CK,
+        CR,
+        CI,
+        HR,
+        CU,
+        CW,
+        CY,
+        CZ,
+        DK,
+        DJ,
+        DM,
+        DO,
+        EC,
+        EG,
+        SV,
+        GQ,
+        ER,
+        EE,
+        ET,
+        FK,
+        FO,
+        FJ,
+        FI,
+        FR,
+        GF,
+        PF,
+        TF,
+        GA,
+        GM,
+        GE,
+        DE,
+        GH,
+        GI,
+        GR,
+        GL,
+        GD,
+        GP,
+        GU,
+        GT,
+        GG,
+        GN,
+        GW,
+        GY,
+        HT,
+        HM,
+        VA,
+        HN,
+        HK,
+        HU,
+        IS,
+        IN,
+        ID,
+        IR,
+        IQ,
+        IE,
+        IM,
+        IL,
+        IT,
+        JM,
+        JP,
+        JE,
+        JO,
+        KZ,
+        KE,
+        KI,
+        KP,
+        KR,
+        KW,
+        KG,
+        LA,
+        LV,
+        LB,
+        LS,
+        LR,
+        LY,
+        LI,
+        LT,
+        LU,
+        MO,
+        MK,
+        MG,
+        MW,
+        MY,
+        MV,
+        ML,
+        MT,
+        MH,
+        MQ,
+        MR,
+        MU,
+        YT,
+        MX,
+        FM,
+        MD,
+        MC,
+        MN,
+        ME,
+        MS,
+        MA,
+        MZ,
+        MM,
+        NA,
+        NR,
+        NP,
+        NL,
+        NC,
+        NZ,
+        NI,
+        NE,
+        NG,
+        NU,
+        NF,
+        MP,
+        NO,
+        OM,
+        PK,
+        PW,
+        PS,
+        PA,
+        PG,
+        PY,
+        PE,
+        PH,
+        PN,
+        PL,
+        PT,
+        PR,
+        QA,
+        RE,
+        RO,
+        RU,
+        RW,
+        BL,
+        SH,
+        KN,
+        LC,
+        MF,
+        PM,
+        VC,
+        WS,
+        SM,
+        ST,
+        SA,
+        SN,
+        RS,
+        SC,
+        SL,
+        SG,
+        SX,
+        SK,
+        SI,
+        SB,
+        SO,
+        ZA,
+        GS,
+        SS,
+        ES,
+        LK,
+        SD,
+        SR,
+        SJ,
+        SZ,
+        SE,
+        CH,
+        SY,
+        TW,
+        TJ,
+        TZ,
+        TH,
+        TL,
+        TG,
+        TK,
+        TO,
+        TT,
+        TN,
+        TR,
+        TM,
+        TC,
+        TV,
+        UG,
+        UA,
+        AE,
+        GB,
+        US,
+        UM,
+        UY,
+        UZ,
+        VU,
+        VE,
+        VN,
+        VG,
+        VI,
+        WF,
+        EH,
+        YE,
+        ZM,
+        ZW
+      )
     )
   }
 
@@ -2885,7 +2887,7 @@ package waf {
     val IPV4 = "IPV4"
     val IPV6 = "IPV6"
 
-    val values = IndexedSeq(IPV4, IPV6)
+    val values = js.Object.freeze(js.Array(IPV4, IPV6))
   }
 
   /**
@@ -3565,7 +3567,7 @@ package waf {
     val SINGLE_QUERY_ARG = "SINGLE_QUERY_ARG"
     val ALL_QUERY_ARGS   = "ALL_QUERY_ARGS"
 
-    val values = IndexedSeq(URI, QUERY_STRING, HEADER, METHOD, BODY, SINGLE_QUERY_ARG, ALL_QUERY_ARGS)
+    val values = js.Object.freeze(js.Array(URI, QUERY_STRING, HEADER, METHOD, BODY, SINGLE_QUERY_ARG, ALL_QUERY_ARGS))
   }
 
   object PositionalConstraintEnum {
@@ -3575,7 +3577,7 @@ package waf {
     val CONTAINS      = "CONTAINS"
     val CONTAINS_WORD = "CONTAINS_WORD"
 
-    val values = IndexedSeq(EXACTLY, STARTS_WITH, ENDS_WITH, CONTAINS, CONTAINS_WORD)
+    val values = js.Object.freeze(js.Array(EXACTLY, STARTS_WITH, ENDS_WITH, CONTAINS, CONTAINS_WORD))
   }
 
   /**
@@ -3613,7 +3615,8 @@ package waf {
     val XssMatch          = "XssMatch"
     val RegexMatch        = "RegexMatch"
 
-    val values = IndexedSeq(IPMatch, ByteMatch, SqlInjectionMatch, GeoMatch, SizeConstraint, XssMatch, RegexMatch)
+    val values =
+      js.Object.freeze(js.Array(IPMatch, ByteMatch, SqlInjectionMatch, GeoMatch, SizeConstraint, XssMatch, RegexMatch))
   }
 
   @js.native
@@ -3722,7 +3725,7 @@ package waf {
   object RateKeyEnum {
     val IP = "IP"
 
-    val values = IndexedSeq(IP)
+    val values = js.Object.freeze(js.Array(IP))
   }
 
   /**
@@ -4381,7 +4384,8 @@ package waf {
     val CMD_LINE             = "CMD_LINE"
     val URL_DECODE           = "URL_DECODE"
 
-    val values = IndexedSeq(NONE, COMPRESS_WHITE_SPACE, HTML_ENTITY_DECODE, LOWERCASE, CMD_LINE, URL_DECODE)
+    val values =
+      js.Object.freeze(js.Array(NONE, COMPRESS_WHITE_SPACE, HTML_ENTITY_DECODE, LOWERCASE, CMD_LINE, URL_DECODE))
   }
 
   /**
@@ -4939,7 +4943,7 @@ package waf {
     val ALLOW = "ALLOW"
     val COUNT = "COUNT"
 
-    val values = IndexedSeq(BLOCK, ALLOW, COUNT)
+    val values = js.Object.freeze(js.Array(BLOCK, ALLOW, COUNT))
   }
 
   /**
@@ -4966,7 +4970,7 @@ package waf {
     val NONE  = "NONE"
     val COUNT = "COUNT"
 
-    val values = IndexedSeq(NONE, COUNT)
+    val values = js.Object.freeze(js.Array(NONE, COUNT))
   }
 
   object WafRuleTypeEnum {
@@ -4974,7 +4978,7 @@ package waf {
     val RATE_BASED = "RATE_BASED"
     val GROUP      = "GROUP"
 
-    val values = IndexedSeq(REGULAR, RATE_BASED, GROUP)
+    val values = js.Object.freeze(js.Array(REGULAR, RATE_BASED, GROUP))
   }
 
   /**
diff --git a/services/wafregional/src/main/scala/facade/amazonaws/services/WAFRegional.scala b/services/wafregional/src/main/scala/facade/amazonaws/services/WAFRegional.scala
index da51f072e..3ac7b36cd 100644
--- a/services/wafregional/src/main/scala/facade/amazonaws/services/WAFRegional.scala
+++ b/services/wafregional/src/main/scala/facade/amazonaws/services/WAFRegional.scala
@@ -559,7 +559,7 @@ package wafregional {
     val INSERT = "INSERT"
     val DELETE = "DELETE"
 
-    val values = IndexedSeq(INSERT, DELETE)
+    val values = js.Object.freeze(js.Array(INSERT, DELETE))
   }
 
   object ChangeTokenStatusEnum {
@@ -567,7 +567,7 @@ package wafregional {
     val PENDING     = "PENDING"
     val INSYNC      = "INSYNC"
 
-    val values = IndexedSeq(PROVISIONED, PENDING, INSYNC)
+    val values = js.Object.freeze(js.Array(PROVISIONED, PENDING, INSYNC))
   }
 
   object ComparisonOperatorEnum {
@@ -578,7 +578,7 @@ package wafregional {
     val GE = "GE"
     val GT = "GT"
 
-    val values = IndexedSeq(EQ, NE, LE, LT, GE, GT)
+    val values = js.Object.freeze(js.Array(EQ, NE, LE, LT, GE, GT))
   }
 
   @js.native
@@ -1670,7 +1670,7 @@ package wafregional {
   object GeoMatchConstraintTypeEnum {
     val Country = "Country"
 
-    val values = IndexedSeq(Country)
+    val values = js.Object.freeze(js.Array(Country))
   }
 
   object GeoMatchConstraintValueEnum {
@@ -1924,256 +1924,258 @@ package wafregional {
     val ZM = "ZM"
     val ZW = "ZW"
 
-    val values = IndexedSeq(
-      AF,
-      AX,
-      AL,
-      DZ,
-      AS,
-      AD,
-      AO,
-      AI,
-      AQ,
-      AG,
-      AR,
-      AM,
-      AW,
-      AU,
-      AT,
-      AZ,
-      BS,
-      BH,
-      BD,
-      BB,
-      BY,
-      BE,
-      BZ,
-      BJ,
-      BM,
-      BT,
-      BO,
-      BQ,
-      BA,
-      BW,
-      BV,
-      BR,
-      IO,
-      BN,
-      BG,
-      BF,
-      BI,
-      KH,
-      CM,
-      CA,
-      CV,
-      KY,
-      CF,
-      TD,
-      CL,
-      CN,
-      CX,
-      CC,
-      CO,
-      KM,
-      CG,
-      CD,
-      CK,
-      CR,
-      CI,
-      HR,
-      CU,
-      CW,
-      CY,
-      CZ,
-      DK,
-      DJ,
-      DM,
-      DO,
-      EC,
-      EG,
-      SV,
-      GQ,
-      ER,
-      EE,
-      ET,
-      FK,
-      FO,
-      FJ,
-      FI,
-      FR,
-      GF,
-      PF,
-      TF,
-      GA,
-      GM,
-      GE,
-      DE,
-      GH,
-      GI,
-      GR,
-      GL,
-      GD,
-      GP,
-      GU,
-      GT,
-      GG,
-      GN,
-      GW,
-      GY,
-      HT,
-      HM,
-      VA,
-      HN,
-      HK,
-      HU,
-      IS,
-      IN,
-      ID,
-      IR,
-      IQ,
-      IE,
-      IM,
-      IL,
-      IT,
-      JM,
-      JP,
-      JE,
-      JO,
-      KZ,
-      KE,
-      KI,
-      KP,
-      KR,
-      KW,
-      KG,
-      LA,
-      LV,
-      LB,
-      LS,
-      LR,
-      LY,
-      LI,
-      LT,
-      LU,
-      MO,
-      MK,
-      MG,
-      MW,
-      MY,
-      MV,
-      ML,
-      MT,
-      MH,
-      MQ,
-      MR,
-      MU,
-      YT,
-      MX,
-      FM,
-      MD,
-      MC,
-      MN,
-      ME,
-      MS,
-      MA,
-      MZ,
-      MM,
-      NA,
-      NR,
-      NP,
-      NL,
-      NC,
-      NZ,
-      NI,
-      NE,
-      NG,
-      NU,
-      NF,
-      MP,
-      NO,
-      OM,
-      PK,
-      PW,
-      PS,
-      PA,
-      PG,
-      PY,
-      PE,
-      PH,
-      PN,
-      PL,
-      PT,
-      PR,
-      QA,
-      RE,
-      RO,
-      RU,
-      RW,
-      BL,
-      SH,
-      KN,
-      LC,
-      MF,
-      PM,
-      VC,
-      WS,
-      SM,
-      ST,
-      SA,
-      SN,
-      RS,
-      SC,
-      SL,
-      SG,
-      SX,
-      SK,
-      SI,
-      SB,
-      SO,
-      ZA,
-      GS,
-      SS,
-      ES,
-      LK,
-      SD,
-      SR,
-      SJ,
-      SZ,
-      SE,
-      CH,
-      SY,
-      TW,
-      TJ,
-      TZ,
-      TH,
-      TL,
-      TG,
-      TK,
-      TO,
-      TT,
-      TN,
-      TR,
-      TM,
-      TC,
-      TV,
-      UG,
-      UA,
-      AE,
-      GB,
-      US,
-      UM,
-      UY,
-      UZ,
-      VU,
-      VE,
-      VN,
-      VG,
-      VI,
-      WF,
-      EH,
-      YE,
-      ZM,
-      ZW
+    val values = js.Object.freeze(
+      js.Array(
+        AF,
+        AX,
+        AL,
+        DZ,
+        AS,
+        AD,
+        AO,
+        AI,
+        AQ,
+        AG,
+        AR,
+        AM,
+        AW,
+        AU,
+        AT,
+        AZ,
+        BS,
+        BH,
+        BD,
+        BB,
+        BY,
+        BE,
+        BZ,
+        BJ,
+        BM,
+        BT,
+        BO,
+        BQ,
+        BA,
+        BW,
+        BV,
+        BR,
+        IO,
+        BN,
+        BG,
+        BF,
+        BI,
+        KH,
+        CM,
+        CA,
+        CV,
+        KY,
+        CF,
+        TD,
+        CL,
+        CN,
+        CX,
+        CC,
+        CO,
+        KM,
+        CG,
+        CD,
+        CK,
+        CR,
+        CI,
+        HR,
+        CU,
+        CW,
+        CY,
+        CZ,
+        DK,
+        DJ,
+        DM,
+        DO,
+        EC,
+        EG,
+        SV,
+        GQ,
+        ER,
+        EE,
+        ET,
+        FK,
+        FO,
+        FJ,
+        FI,
+        FR,
+        GF,
+        PF,
+        TF,
+        GA,
+        GM,
+        GE,
+        DE,
+        GH,
+        GI,
+        GR,
+        GL,
+        GD,
+        GP,
+        GU,
+        GT,
+        GG,
+        GN,
+        GW,
+        GY,
+        HT,
+        HM,
+        VA,
+        HN,
+        HK,
+        HU,
+        IS,
+        IN,
+        ID,
+        IR,
+        IQ,
+        IE,
+        IM,
+        IL,
+        IT,
+        JM,
+        JP,
+        JE,
+        JO,
+        KZ,
+        KE,
+        KI,
+        KP,
+        KR,
+        KW,
+        KG,
+        LA,
+        LV,
+        LB,
+        LS,
+        LR,
+        LY,
+        LI,
+        LT,
+        LU,
+        MO,
+        MK,
+        MG,
+        MW,
+        MY,
+        MV,
+        ML,
+        MT,
+        MH,
+        MQ,
+        MR,
+        MU,
+        YT,
+        MX,
+        FM,
+        MD,
+        MC,
+        MN,
+        ME,
+        MS,
+        MA,
+        MZ,
+        MM,
+        NA,
+        NR,
+        NP,
+        NL,
+        NC,
+        NZ,
+        NI,
+        NE,
+        NG,
+        NU,
+        NF,
+        MP,
+        NO,
+        OM,
+        PK,
+        PW,
+        PS,
+        PA,
+        PG,
+        PY,
+        PE,
+        PH,
+        PN,
+        PL,
+        PT,
+        PR,
+        QA,
+        RE,
+        RO,
+        RU,
+        RW,
+        BL,
+        SH,
+        KN,
+        LC,
+        MF,
+        PM,
+        VC,
+        WS,
+        SM,
+        ST,
+        SA,
+        SN,
+        RS,
+        SC,
+        SL,
+        SG,
+        SX,
+        SK,
+        SI,
+        SB,
+        SO,
+        ZA,
+        GS,
+        SS,
+        ES,
+        LK,
+        SD,
+        SR,
+        SJ,
+        SZ,
+        SE,
+        CH,
+        SY,
+        TW,
+        TJ,
+        TZ,
+        TH,
+        TL,
+        TG,
+        TK,
+        TO,
+        TT,
+        TN,
+        TR,
+        TM,
+        TC,
+        TV,
+        UG,
+        UA,
+        AE,
+        GB,
+        US,
+        UM,
+        UY,
+        UZ,
+        VU,
+        VE,
+        VN,
+        VG,
+        VI,
+        WF,
+        EH,
+        YE,
+        ZM,
+        ZW
+      )
     )
   }
 
@@ -2993,7 +2995,7 @@ package wafregional {
     val IPV4 = "IPV4"
     val IPV6 = "IPV6"
 
-    val values = IndexedSeq(IPV4, IPV6)
+    val values = js.Object.freeze(js.Array(IPV4, IPV6))
   }
 
   /**
@@ -3708,7 +3710,7 @@ package wafregional {
     val SINGLE_QUERY_ARG = "SINGLE_QUERY_ARG"
     val ALL_QUERY_ARGS   = "ALL_QUERY_ARGS"
 
-    val values = IndexedSeq(URI, QUERY_STRING, HEADER, METHOD, BODY, SINGLE_QUERY_ARG, ALL_QUERY_ARGS)
+    val values = js.Object.freeze(js.Array(URI, QUERY_STRING, HEADER, METHOD, BODY, SINGLE_QUERY_ARG, ALL_QUERY_ARGS))
   }
 
   object PositionalConstraintEnum {
@@ -3718,7 +3720,7 @@ package wafregional {
     val CONTAINS      = "CONTAINS"
     val CONTAINS_WORD = "CONTAINS_WORD"
 
-    val values = IndexedSeq(EXACTLY, STARTS_WITH, ENDS_WITH, CONTAINS, CONTAINS_WORD)
+    val values = js.Object.freeze(js.Array(EXACTLY, STARTS_WITH, ENDS_WITH, CONTAINS, CONTAINS_WORD))
   }
 
   /**
@@ -3756,7 +3758,8 @@ package wafregional {
     val XssMatch          = "XssMatch"
     val RegexMatch        = "RegexMatch"
 
-    val values = IndexedSeq(IPMatch, ByteMatch, SqlInjectionMatch, GeoMatch, SizeConstraint, XssMatch, RegexMatch)
+    val values =
+      js.Object.freeze(js.Array(IPMatch, ByteMatch, SqlInjectionMatch, GeoMatch, SizeConstraint, XssMatch, RegexMatch))
   }
 
   @js.native
@@ -3865,7 +3868,7 @@ package wafregional {
   object RateKeyEnum {
     val IP = "IP"
 
-    val values = IndexedSeq(IP)
+    val values = js.Object.freeze(js.Array(IP))
   }
 
   /**
@@ -4044,7 +4047,7 @@ package wafregional {
     val APPLICATION_LOAD_BALANCER = "APPLICATION_LOAD_BALANCER"
     val API_GATEWAY               = "API_GATEWAY"
 
-    val values = IndexedSeq(APPLICATION_LOAD_BALANCER, API_GATEWAY)
+    val values = js.Object.freeze(js.Array(APPLICATION_LOAD_BALANCER, API_GATEWAY))
   }
 
   /**
@@ -4531,7 +4534,8 @@ package wafregional {
     val CMD_LINE             = "CMD_LINE"
     val URL_DECODE           = "URL_DECODE"
 
-    val values = IndexedSeq(NONE, COMPRESS_WHITE_SPACE, HTML_ENTITY_DECODE, LOWERCASE, CMD_LINE, URL_DECODE)
+    val values =
+      js.Object.freeze(js.Array(NONE, COMPRESS_WHITE_SPACE, HTML_ENTITY_DECODE, LOWERCASE, CMD_LINE, URL_DECODE))
   }
 
   /**
@@ -5089,7 +5093,7 @@ package wafregional {
     val ALLOW = "ALLOW"
     val COUNT = "COUNT"
 
-    val values = IndexedSeq(BLOCK, ALLOW, COUNT)
+    val values = js.Object.freeze(js.Array(BLOCK, ALLOW, COUNT))
   }
 
   /**
@@ -5116,7 +5120,7 @@ package wafregional {
     val NONE  = "NONE"
     val COUNT = "COUNT"
 
-    val values = IndexedSeq(NONE, COUNT)
+    val values = js.Object.freeze(js.Array(NONE, COUNT))
   }
 
   object WafRuleTypeEnum {
@@ -5124,7 +5128,7 @@ package wafregional {
     val RATE_BASED = "RATE_BASED"
     val GROUP      = "GROUP"
 
-    val values = IndexedSeq(REGULAR, RATE_BASED, GROUP)
+    val values = js.Object.freeze(js.Array(REGULAR, RATE_BASED, GROUP))
   }
 
   /**
diff --git a/services/workdocs/src/main/scala/facade/amazonaws/services/WorkDocs.scala b/services/workdocs/src/main/scala/facade/amazonaws/services/WorkDocs.scala
index 79b09ba93..b167a4f76 100644
--- a/services/workdocs/src/main/scala/facade/amazonaws/services/WorkDocs.scala
+++ b/services/workdocs/src/main/scala/facade/amazonaws/services/WorkDocs.scala
@@ -377,40 +377,42 @@ package workdocs {
     val FOLDER_SHAREABLE_LINK_PERMISSION_CHANGED   = "FOLDER_SHAREABLE_LINK_PERMISSION_CHANGED"
     val FOLDER_MOVED                               = "FOLDER_MOVED"
 
-    val values = IndexedSeq(
-      DOCUMENT_CHECKED_IN,
-      DOCUMENT_CHECKED_OUT,
-      DOCUMENT_RENAMED,
-      DOCUMENT_VERSION_UPLOADED,
-      DOCUMENT_VERSION_DELETED,
-      DOCUMENT_VERSION_VIEWED,
-      DOCUMENT_VERSION_DOWNLOADED,
-      DOCUMENT_RECYCLED,
-      DOCUMENT_RESTORED,
-      DOCUMENT_REVERTED,
-      DOCUMENT_SHARED,
-      DOCUMENT_UNSHARED,
-      DOCUMENT_SHARE_PERMISSION_CHANGED,
-      DOCUMENT_SHAREABLE_LINK_CREATED,
-      DOCUMENT_SHAREABLE_LINK_REMOVED,
-      DOCUMENT_SHAREABLE_LINK_PERMISSION_CHANGED,
-      DOCUMENT_MOVED,
-      DOCUMENT_COMMENT_ADDED,
-      DOCUMENT_COMMENT_DELETED,
-      DOCUMENT_ANNOTATION_ADDED,
-      DOCUMENT_ANNOTATION_DELETED,
-      FOLDER_CREATED,
-      FOLDER_DELETED,
-      FOLDER_RENAMED,
-      FOLDER_RECYCLED,
-      FOLDER_RESTORED,
-      FOLDER_SHARED,
-      FOLDER_UNSHARED,
-      FOLDER_SHARE_PERMISSION_CHANGED,
-      FOLDER_SHAREABLE_LINK_CREATED,
-      FOLDER_SHAREABLE_LINK_REMOVED,
-      FOLDER_SHAREABLE_LINK_PERMISSION_CHANGED,
-      FOLDER_MOVED
+    val values = js.Object.freeze(
+      js.Array(
+        DOCUMENT_CHECKED_IN,
+        DOCUMENT_CHECKED_OUT,
+        DOCUMENT_RENAMED,
+        DOCUMENT_VERSION_UPLOADED,
+        DOCUMENT_VERSION_DELETED,
+        DOCUMENT_VERSION_VIEWED,
+        DOCUMENT_VERSION_DOWNLOADED,
+        DOCUMENT_RECYCLED,
+        DOCUMENT_RESTORED,
+        DOCUMENT_REVERTED,
+        DOCUMENT_SHARED,
+        DOCUMENT_UNSHARED,
+        DOCUMENT_SHARE_PERMISSION_CHANGED,
+        DOCUMENT_SHAREABLE_LINK_CREATED,
+        DOCUMENT_SHAREABLE_LINK_REMOVED,
+        DOCUMENT_SHAREABLE_LINK_PERMISSION_CHANGED,
+        DOCUMENT_MOVED,
+        DOCUMENT_COMMENT_ADDED,
+        DOCUMENT_COMMENT_DELETED,
+        DOCUMENT_ANNOTATION_ADDED,
+        DOCUMENT_ANNOTATION_DELETED,
+        FOLDER_CREATED,
+        FOLDER_DELETED,
+        FOLDER_RENAMED,
+        FOLDER_RECYCLED,
+        FOLDER_RESTORED,
+        FOLDER_SHARED,
+        FOLDER_UNSHARED,
+        FOLDER_SHARE_PERMISSION_CHANGED,
+        FOLDER_SHAREABLE_LINK_CREATED,
+        FOLDER_SHAREABLE_LINK_REMOVED,
+        FOLDER_SHAREABLE_LINK_PERMISSION_CHANGED,
+        FOLDER_MOVED
+      )
     )
   }
 
@@ -459,7 +461,7 @@ package workdocs {
     val TRUE  = "TRUE"
     val FALSE = "FALSE"
 
-    val values = IndexedSeq(TRUE, FALSE)
+    val values = js.Object.freeze(js.Array(TRUE, FALSE))
   }
 
   /**
@@ -541,14 +543,14 @@ package workdocs {
     val PUBLISHED = "PUBLISHED"
     val DELETED   = "DELETED"
 
-    val values = IndexedSeq(DRAFT, PUBLISHED, DELETED)
+    val values = js.Object.freeze(js.Array(DRAFT, PUBLISHED, DELETED))
   }
 
   object CommentVisibilityTypeEnum {
     val PUBLIC  = "PUBLIC"
     val PRIVATE = "PRIVATE"
 
-    val values = IndexedSeq(PUBLIC, PRIVATE)
+    val values = js.Object.freeze(js.Array(PUBLIC, PRIVATE))
   }
 
   @js.native
@@ -1535,14 +1537,14 @@ package workdocs {
     val ORIGINAL      = "ORIGINAL"
     val WITH_COMMENTS = "WITH_COMMENTS"
 
-    val values = IndexedSeq(ORIGINAL, WITH_COMMENTS)
+    val values = js.Object.freeze(js.Array(ORIGINAL, WITH_COMMENTS))
   }
 
   object DocumentStatusTypeEnum {
     val INITIALIZED = "INITIALIZED"
     val ACTIVE      = "ACTIVE"
 
-    val values = IndexedSeq(INITIALIZED, ACTIVE)
+    val values = js.Object.freeze(js.Array(INITIALIZED, ACTIVE))
   }
 
   object DocumentThumbnailTypeEnum {
@@ -1550,7 +1552,7 @@ package workdocs {
     val SMALL_HQ = "SMALL_HQ"
     val LARGE    = "LARGE"
 
-    val values = IndexedSeq(SMALL, SMALL_HQ, LARGE)
+    val values = js.Object.freeze(js.Array(SMALL, SMALL_HQ, LARGE))
   }
 
   /**
@@ -1610,7 +1612,7 @@ package workdocs {
   object DocumentVersionStatusEnum {
     val ACTIVE = "ACTIVE"
 
-    val values = IndexedSeq(ACTIVE)
+    val values = js.Object.freeze(js.Array(ACTIVE))
   }
 
   object FolderContentTypeEnum {
@@ -1618,7 +1620,7 @@ package workdocs {
     val DOCUMENT = "DOCUMENT"
     val FOLDER   = "FOLDER"
 
-    val values = IndexedSeq(ALL, DOCUMENT, FOLDER)
+    val values = js.Object.freeze(js.Array(ALL, DOCUMENT, FOLDER))
   }
 
   /**
@@ -2056,7 +2058,7 @@ package workdocs {
     val pt_BR   = "pt_BR"
     val default = "default"
 
-    val values = IndexedSeq(en, fr, ko, de, es, ja, ru, zh_CN, zh_TW, pt_BR, default)
+    val values = js.Object.freeze(js.Array(en, fr, ko, de, es, ja, ru, zh_CN, zh_TW, pt_BR, default))
   }
 
   /**
@@ -2084,7 +2086,7 @@ package workdocs {
     val ASCENDING  = "ASCENDING"
     val DESCENDING = "DESCENDING"
 
-    val values = IndexedSeq(ASCENDING, DESCENDING)
+    val values = js.Object.freeze(js.Array(ASCENDING, DESCENDING))
   }
 
   /**
@@ -2160,7 +2162,7 @@ package workdocs {
     val ANONYMOUS    = "ANONYMOUS"
     val ORGANIZATION = "ORGANIZATION"
 
-    val values = IndexedSeq(USER, GROUP, INVITE, ANONYMOUS, ORGANIZATION)
+    val values = js.Object.freeze(js.Array(USER, GROUP, INVITE, ANONYMOUS, ORGANIZATION))
   }
 
   @js.native
@@ -2212,7 +2214,7 @@ package workdocs {
   object ResourceCollectionTypeEnum {
     val SHARED_WITH_ME = "SHARED_WITH_ME"
 
-    val values = IndexedSeq(SHARED_WITH_ME)
+    val values = js.Object.freeze(js.Array(SHARED_WITH_ME))
   }
 
   /**
@@ -2294,7 +2296,7 @@ package workdocs {
     val DATE = "DATE"
     val NAME = "NAME"
 
-    val values = IndexedSeq(DATE, NAME)
+    val values = js.Object.freeze(js.Array(DATE, NAME))
   }
 
   object ResourceStateTypeEnum {
@@ -2303,21 +2305,21 @@ package workdocs {
     val RECYCLING = "RECYCLING"
     val RECYCLED  = "RECYCLED"
 
-    val values = IndexedSeq(ACTIVE, RESTORING, RECYCLING, RECYCLED)
+    val values = js.Object.freeze(js.Array(ACTIVE, RESTORING, RECYCLING, RECYCLED))
   }
 
   object ResourceTypeEnum {
     val FOLDER   = "FOLDER"
     val DOCUMENT = "DOCUMENT"
 
-    val values = IndexedSeq(FOLDER, DOCUMENT)
+    val values = js.Object.freeze(js.Array(FOLDER, DOCUMENT))
   }
 
   object RolePermissionTypeEnum {
     val DIRECT    = "DIRECT"
     val INHERITED = "INHERITED"
 
-    val values = IndexedSeq(DIRECT, INHERITED)
+    val values = js.Object.freeze(js.Array(DIRECT, INHERITED))
   }
 
   object RoleTypeEnum {
@@ -2326,7 +2328,7 @@ package workdocs {
     val OWNER       = "OWNER"
     val COOWNER     = "COOWNER"
 
-    val values = IndexedSeq(VIEWER, CONTRIBUTOR, OWNER, COOWNER)
+    val values = js.Object.freeze(js.Array(VIEWER, CONTRIBUTOR, OWNER, COOWNER))
   }
 
   /**
@@ -2392,7 +2394,7 @@ package workdocs {
     val SUCCESS = "SUCCESS"
     val FAILURE = "FAILURE"
 
-    val values = IndexedSeq(SUCCESS, FAILURE)
+    val values = js.Object.freeze(js.Array(SUCCESS, FAILURE))
   }
 
   /**
@@ -2420,7 +2422,7 @@ package workdocs {
     val UNLIMITED = "UNLIMITED"
     val QUOTA     = "QUOTA"
 
-    val values = IndexedSeq(UNLIMITED, QUOTA)
+    val values = js.Object.freeze(js.Array(UNLIMITED, QUOTA))
   }
 
   /**
@@ -2450,13 +2452,13 @@ package workdocs {
   object SubscriptionProtocolTypeEnum {
     val HTTPS = "HTTPS"
 
-    val values = IndexedSeq(HTTPS)
+    val values = js.Object.freeze(js.Array(HTTPS))
   }
 
   object SubscriptionTypeEnum {
     val ALL = "ALL"
 
-    val values = IndexedSeq(ALL)
+    val values = js.Object.freeze(js.Array(ALL))
   }
 
   @js.native
@@ -2684,7 +2686,7 @@ package workdocs {
     val ALL            = "ALL"
     val ACTIVE_PENDING = "ACTIVE_PENDING"
 
-    val values = IndexedSeq(ALL, ACTIVE_PENDING)
+    val values = js.Object.freeze(js.Array(ALL, ACTIVE_PENDING))
   }
 
   /**
@@ -2724,7 +2726,7 @@ package workdocs {
     val USER_STATUS   = "USER_STATUS"
     val STORAGE_USED  = "STORAGE_USED"
 
-    val values = IndexedSeq(USER_NAME, FULL_NAME, STORAGE_LIMIT, USER_STATUS, STORAGE_USED)
+    val values = js.Object.freeze(js.Array(USER_NAME, FULL_NAME, STORAGE_LIMIT, USER_STATUS, STORAGE_USED))
   }
 
   object UserStatusTypeEnum {
@@ -2732,7 +2734,7 @@ package workdocs {
     val INACTIVE = "INACTIVE"
     val PENDING  = "PENDING"
 
-    val values = IndexedSeq(ACTIVE, INACTIVE, PENDING)
+    val values = js.Object.freeze(js.Array(ACTIVE, INACTIVE, PENDING))
   }
 
   /**
@@ -2763,6 +2765,6 @@ package workdocs {
     val MINIMALUSER    = "MINIMALUSER"
     val WORKSPACESUSER = "WORKSPACESUSER"
 
-    val values = IndexedSeq(USER, ADMIN, POWERUSER, MINIMALUSER, WORKSPACESUSER)
+    val values = js.Object.freeze(js.Array(USER, ADMIN, POWERUSER, MINIMALUSER, WORKSPACESUSER))
   }
 }
diff --git a/services/worklink/src/main/scala/facade/amazonaws/services/WorkLink.scala b/services/worklink/src/main/scala/facade/amazonaws/services/WorkLink.scala
index a72778667..6b5ab8647 100644
--- a/services/worklink/src/main/scala/facade/amazonaws/services/WorkLink.scala
+++ b/services/worklink/src/main/scala/facade/amazonaws/services/WorkLink.scala
@@ -323,7 +323,7 @@ package worklink {
   object AuthorizationProviderTypeEnum {
     val SAML = "SAML"
 
-    val values = IndexedSeq(SAML)
+    val values = js.Object.freeze(js.Array(SAML))
   }
 
   @js.native
@@ -736,7 +736,7 @@ package worklink {
     val ACTIVE     = "ACTIVE"
     val SIGNED_OUT = "SIGNED_OUT"
 
-    val values = IndexedSeq(ACTIVE, SIGNED_OUT)
+    val values = js.Object.freeze(js.Array(ACTIVE, SIGNED_OUT))
   }
 
   /**
@@ -866,15 +866,17 @@ package worklink {
     val FAILED_TO_ASSOCIATE    = "FAILED_TO_ASSOCIATE"
     val FAILED_TO_DISASSOCIATE = "FAILED_TO_DISASSOCIATE"
 
-    val values = IndexedSeq(
-      PENDING_VALIDATION,
-      ASSOCIATING,
-      ACTIVE,
-      INACTIVE,
-      DISASSOCIATING,
-      DISASSOCIATED,
-      FAILED_TO_ASSOCIATE,
-      FAILED_TO_DISASSOCIATE
+    val values = js.Object.freeze(
+      js.Array(
+        PENDING_VALIDATION,
+        ASSOCIATING,
+        ACTIVE,
+        INACTIVE,
+        DISASSOCIATING,
+        DISASSOCIATED,
+        FAILED_TO_ASSOCIATE,
+        FAILED_TO_DISASSOCIATE
+      )
     )
   }
 
@@ -915,7 +917,7 @@ package worklink {
     val FAILED_TO_CREATE = "FAILED_TO_CREATE"
     val FAILED_TO_DELETE = "FAILED_TO_DELETE"
 
-    val values = IndexedSeq(CREATING, ACTIVE, DELETING, DELETED, FAILED_TO_CREATE, FAILED_TO_DELETE)
+    val values = js.Object.freeze(js.Array(CREATING, ACTIVE, DELETING, DELETED, FAILED_TO_CREATE, FAILED_TO_DELETE))
   }
 
   /**
@@ -957,7 +959,7 @@ package worklink {
   object IdentityProviderTypeEnum {
     val SAML = "SAML"
 
-    val values = IndexedSeq(SAML)
+    val values = js.Object.freeze(js.Array(SAML))
   }
 
   @js.native
diff --git a/services/workmail/src/main/scala/facade/amazonaws/services/WorkMail.scala b/services/workmail/src/main/scala/facade/amazonaws/services/WorkMail.scala
index 0381972c3..4e41e6b24 100644
--- a/services/workmail/src/main/scala/facade/amazonaws/services/WorkMail.scala
+++ b/services/workmail/src/main/scala/facade/amazonaws/services/WorkMail.scala
@@ -925,7 +925,7 @@ package workmail {
     val DISABLED = "DISABLED"
     val DELETED  = "DELETED"
 
-    val values = IndexedSeq(ENABLED, DISABLED, DELETED)
+    val values = js.Object.freeze(js.Array(ENABLED, DISABLED, DELETED))
   }
 
   @js.native
@@ -1371,7 +1371,7 @@ package workmail {
     val GROUP = "GROUP"
     val USER  = "USER"
 
-    val values = IndexedSeq(GROUP, USER)
+    val values = js.Object.freeze(js.Array(GROUP, USER))
   }
 
   /**
@@ -1432,7 +1432,7 @@ package workmail {
     val SEND_AS        = "SEND_AS"
     val SEND_ON_BEHALF = "SEND_ON_BEHALF"
 
-    val values = IndexedSeq(FULL_ACCESS, SEND_AS, SEND_ON_BEHALF)
+    val values = js.Object.freeze(js.Array(FULL_ACCESS, SEND_AS, SEND_ON_BEHALF))
   }
 
   @js.native
@@ -1583,7 +1583,7 @@ package workmail {
     val ROOM      = "ROOM"
     val EQUIPMENT = "EQUIPMENT"
 
-    val values = IndexedSeq(ROOM, EQUIPMENT)
+    val values = js.Object.freeze(js.Array(ROOM, EQUIPMENT))
   }
 
   @js.native
@@ -1738,6 +1738,6 @@ package workmail {
     val RESOURCE    = "RESOURCE"
     val SYSTEM_USER = "SYSTEM_USER"
 
-    val values = IndexedSeq(USER, RESOURCE, SYSTEM_USER)
+    val values = js.Object.freeze(js.Array(USER, RESOURCE, SYSTEM_USER))
   }
 }
diff --git a/services/workspaces/src/main/scala/facade/amazonaws/services/WorkSpaces.scala b/services/workspaces/src/main/scala/facade/amazonaws/services/WorkSpaces.scala
index 6a2f49cf9..39c772315 100644
--- a/services/workspaces/src/main/scala/facade/amazonaws/services/WorkSpaces.scala
+++ b/services/workspaces/src/main/scala/facade/amazonaws/services/WorkSpaces.scala
@@ -382,7 +382,7 @@ package workspaces {
     val POWERPRO    = "POWERPRO"
     val GRAPHICSPRO = "GRAPHICSPRO"
 
-    val values = IndexedSeq(VALUE, STANDARD, PERFORMANCE, POWER, GRAPHICS, POWERPRO, GRAPHICSPRO)
+    val values = js.Object.freeze(js.Array(VALUE, STANDARD, PERFORMANCE, POWER, GRAPHICS, POWERPRO, GRAPHICSPRO))
   }
 
   /**
@@ -408,7 +408,7 @@ package workspaces {
     val DISCONNECTED = "DISCONNECTED"
     val UNKNOWN      = "UNKNOWN"
 
-    val values = IndexedSeq(CONNECTED, DISCONNECTED, UNKNOWN)
+    val values = js.Object.freeze(js.Array(CONNECTED, DISCONNECTED, UNKNOWN))
   }
 
   @js.native
@@ -568,20 +568,20 @@ package workspaces {
     val COMPLETED = "COMPLETED"
     val FAILED    = "FAILED"
 
-    val values = IndexedSeq(PENDING, COMPLETED, FAILED)
+    val values = js.Object.freeze(js.Array(PENDING, COMPLETED, FAILED))
   }
 
   object DedicatedTenancySupportEnumEnum {
     val ENABLED = "ENABLED"
 
-    val values = IndexedSeq(ENABLED)
+    val values = js.Object.freeze(js.Array(ENABLED))
   }
 
   object DedicatedTenancySupportResultEnumEnum {
     val ENABLED  = "ENABLED"
     val DISABLED = "DISABLED"
 
-    val values = IndexedSeq(ENABLED, DISABLED)
+    val values = js.Object.freeze(js.Array(ENABLED, DISABLED))
   }
 
   /**
@@ -1263,7 +1263,7 @@ package workspaces {
     val USER_VOLUME  = "USER_VOLUME"
     val COMPUTE_TYPE = "COMPUTE_TYPE"
 
-    val values = IndexedSeq(ROOT_VOLUME, USER_VOLUME, COMPUTE_TYPE)
+    val values = js.Object.freeze(js.Array(ROOT_VOLUME, USER_VOLUME, COMPUTE_TYPE))
   }
 
   /**
@@ -1291,7 +1291,7 @@ package workspaces {
     val UPDATE_INITIATED   = "UPDATE_INITIATED"
     val UPDATE_IN_PROGRESS = "UPDATE_IN_PROGRESS"
 
-    val values = IndexedSeq(UPDATE_INITIATED, UPDATE_IN_PROGRESS)
+    val values = js.Object.freeze(js.Array(UPDATE_INITIATED, UPDATE_IN_PROGRESS))
   }
 
   @js.native
@@ -1444,7 +1444,7 @@ package workspaces {
     val WINDOWS = "WINDOWS"
     val LINUX   = "LINUX"
 
-    val values = IndexedSeq(WINDOWS, LINUX)
+    val values = js.Object.freeze(js.Array(WINDOWS, LINUX))
   }
 
   /**
@@ -1555,7 +1555,7 @@ package workspaces {
     val ENABLED  = "ENABLED"
     val DISABLED = "DISABLED"
 
-    val values = IndexedSeq(ENABLED, DISABLED)
+    val values = js.Object.freeze(js.Array(ENABLED, DISABLED))
   }
 
   @js.native
@@ -1612,7 +1612,7 @@ package workspaces {
     val AUTO_STOP = "AUTO_STOP"
     val ALWAYS_ON = "ALWAYS_ON"
 
-    val values = IndexedSeq(AUTO_STOP, ALWAYS_ON)
+    val values = js.Object.freeze(js.Array(AUTO_STOP, ALWAYS_ON))
   }
 
   /**
@@ -1742,7 +1742,7 @@ package workspaces {
     val AVAILABLE         = "AVAILABLE"
     val ADMIN_MAINTENANCE = "ADMIN_MAINTENANCE"
 
-    val values = IndexedSeq(AVAILABLE, ADMIN_MAINTENANCE)
+    val values = js.Object.freeze(js.Array(AVAILABLE, ADMIN_MAINTENANCE))
   }
 
   /**
@@ -2035,14 +2035,14 @@ package workspaces {
     val DEREGISTERED  = "DEREGISTERED"
     val ERROR         = "ERROR"
 
-    val values = IndexedSeq(REGISTERING, REGISTERED, DEREGISTERING, DEREGISTERED, ERROR)
+    val values = js.Object.freeze(js.Array(REGISTERING, REGISTERED, DEREGISTERING, DEREGISTERED, ERROR))
   }
 
   object WorkspaceDirectoryTypeEnum {
     val SIMPLE_AD    = "SIMPLE_AD"
     val AD_CONNECTOR = "AD_CONNECTOR"
 
-    val values = IndexedSeq(SIMPLE_AD, AD_CONNECTOR)
+    val values = js.Object.freeze(js.Array(SIMPLE_AD, AD_CONNECTOR))
   }
 
   /**
@@ -2089,14 +2089,14 @@ package workspaces {
     val BYOL_GRAPHICS    = "BYOL_GRAPHICS"
     val BYOL_GRAPHICSPRO = "BYOL_GRAPHICSPRO"
 
-    val values = IndexedSeq(BYOL_REGULAR, BYOL_GRAPHICS, BYOL_GRAPHICSPRO)
+    val values = js.Object.freeze(js.Array(BYOL_REGULAR, BYOL_GRAPHICS, BYOL_GRAPHICSPRO))
   }
 
   object WorkspaceImageRequiredTenancyEnum {
     val DEFAULT   = "DEFAULT"
     val DEDICATED = "DEDICATED"
 
-    val values = IndexedSeq(DEFAULT, DEDICATED)
+    val values = js.Object.freeze(js.Array(DEFAULT, DEDICATED))
   }
 
   object WorkspaceImageStateEnum {
@@ -2104,7 +2104,7 @@ package workspaces {
     val PENDING   = "PENDING"
     val ERROR     = "ERROR"
 
-    val values = IndexedSeq(AVAILABLE, PENDING, ERROR)
+    val values = js.Object.freeze(js.Array(AVAILABLE, PENDING, ERROR))
   }
 
   /**
@@ -2198,23 +2198,25 @@ package workspaces {
     val STOPPED           = "STOPPED"
     val ERROR             = "ERROR"
 
-    val values = IndexedSeq(
-      PENDING,
-      AVAILABLE,
-      IMPAIRED,
-      UNHEALTHY,
-      REBOOTING,
-      STARTING,
-      REBUILDING,
-      MAINTENANCE,
-      ADMIN_MAINTENANCE,
-      TERMINATING,
-      TERMINATED,
-      SUSPENDED,
-      UPDATING,
-      STOPPING,
-      STOPPED,
-      ERROR
+    val values = js.Object.freeze(
+      js.Array(
+        PENDING,
+        AVAILABLE,
+        IMPAIRED,
+        UNHEALTHY,
+        REBOOTING,
+        STARTING,
+        REBUILDING,
+        MAINTENANCE,
+        ADMIN_MAINTENANCE,
+        TERMINATING,
+        TERMINATED,
+        SUSPENDED,
+        UPDATING,
+        STOPPING,
+        STOPPED,
+        ERROR
+      )
     )
   }
 
diff --git a/services/xray/src/main/scala/facade/amazonaws/services/XRay.scala b/services/xray/src/main/scala/facade/amazonaws/services/XRay.scala
index 731af3c9f..654680c12 100644
--- a/services/xray/src/main/scala/facade/amazonaws/services/XRay.scala
+++ b/services/xray/src/main/scala/facade/amazonaws/services/XRay.scala
@@ -525,14 +525,14 @@ package xray {
     val UPDATING = "UPDATING"
     val ACTIVE   = "ACTIVE"
 
-    val values = IndexedSeq(UPDATING, ACTIVE)
+    val values = js.Object.freeze(js.Array(UPDATING, ACTIVE))
   }
 
   object EncryptionTypeEnum {
     val NONE = "NONE"
     val KMS  = "KMS"
 
-    val values = IndexedSeq(NONE, KMS)
+    val values = js.Object.freeze(js.Array(NONE, KMS))
   }
 
   /**
@@ -1693,7 +1693,7 @@ package xray {
     val PartialScan = "PartialScan"
     val FixedRate   = "FixedRate"
 
-    val values = IndexedSeq(PartialScan, FixedRate)
+    val values = js.Object.freeze(js.Array(PartialScan, FixedRate))
   }
 
   /**
@@ -1898,7 +1898,7 @@ package xray {
     val TraceId = "TraceId"
     val Event   = "Event"
 
-    val values = IndexedSeq(TraceId, Event)
+    val values = js.Object.freeze(js.Array(TraceId, Event))
   }
 
   /**