diff --git a/.github/workflows/maven-build.yml b/.github/workflows/maven-build.yml
index c85498c1..fc4f02da 100644
--- a/.github/workflows/maven-build.yml
+++ b/.github/workflows/maven-build.yml
@@ -20,7 +20,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        java: [11, 17]
+        java: [11, 17, 21]
         os: [ubuntu-latest]
         distribution: [temurin]