diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index 0269ee5..6ba8a77 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -13,7 +13,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ ubuntu-latest, macos-latest, windows-latest ]
-        java: [ '8', '11', '17' ]
+        java: [ '8', '11', '17', '21' ]
 
     steps:
       - uses: actions/checkout@v4