diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index f2ee5b99..ff47d69b 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-22.04
     strategy:
       matrix:
-        java_version: [ 11, 17 ]
+        java_version: [ 11, 21 ]
 
     steps:
       # Setup Java & Python