diff --git a/composer.json b/composer.json
index ee21005..265e185 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,7 @@
     "require-dev": {
         "phpunit/phpunit": "^9.6",
         "slim/psr7": "^1.6",
-        "squizlabs/php_codesniffer": "^3.8"
+        "squizlabs/php_codesniffer": "^3.9"
     },
     "autoload": {
         "psr-4": {