diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index a391a4a..21d85bf 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ${{ matrix.platform }}
     strategy:
       matrix:
-        java: [11, 17]
+        java: [11, 17, 21]
         platform: [ubuntu-20.04, macos-11, windows-2019]
     steps:
     - name: install libomp