diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index 508974a2..4fc099e7 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -27,7 +27,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        jdk: [ 8, 20 ]
+        jdk: [ 8, 21 ]
 
     steps:
       - name: Checkout