Update maven.yml
diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index 11d2af5..ffd5390 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -28,4 +28,4 @@
     with:
       jdk-matrix: '[ "8", "11", "17","21" ]'
       jdk-distribution-matrix: '[ "temurin", "zulu", "microsoft", "liberica", "adopt-openj9" ]'
-      matrix-exclude: '[{ "jdk": "8", "distribution": "microsoft"}]'
+      matrix-exclude: '[{ "jdk": "8", "distribution": "microsoft"},{ "jdk": "21", "distribution": "adopt-openj9"}]'