diff --git a/util/YamlTests.php b/util/YamlTests.php
index ad0a2cb27..6998f8e33 100644
--- a/util/YamlTests.php
+++ b/util/YamlTests.php
@@ -58,13 +58,14 @@ class YamlTests
         'Indices\SimulateIndexTemplate\_10_BasicTest::SimulateIndexTemplateWithIndexNotMatchingAnyTemplate' => 'Bool mismatch',
         'Snapshot\Create\_10_BasicTest::CreateASnapshot' => 'Invalid snapshot name [test_snapshot]',
         'Snapshot\Create\_10_BasicTest::CreateASnapshotAndCleanUpRepository' => 'Invalid snapshot name [test_snapshot]',
+        'Tsdb\_20_MappingTest::UnsupportedMetricTypePosition' => 'Fixed in Elasticsearch 8.9',
     ];
 
     const SKIPPED_TEST_XPACK = [
         'ApiKey\_10_BasicTest::TestGetApiKey' => 'Mismatch values',
         'ApiKey\_20_QueryTest::TestQueryApiKey' => 'Mismatch values',
         'DataStream\_80_Resolve_Index_Data_StreamsTest::*' => 'Skipped all tests',
-        'Health\_10_UsageTest::UsageStatsOnTheHealthAPI' => 'Undefined array key "green"',
+        'Health\_10_UsageTest::UsageStatsOnTheHealthAPI' => 'Undefined array key \"green\"',
         'License\_20_Put_LicenseTest::*' => 'License issue',
         'License\_30_Enterprise_LicenseTest::*' => 'Invalid license',
         'Ml\_Jobs_CrudTest::TestPutJobWithModel_memory_limitAsStringAndLazyOpen' => 'Memory limit',