diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 211c547f1fe64668db06fcccba4a188bdae41600..09b0754f8908ea4053212e75215f130843ebe093 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -27,6 +27,10 @@ tests:jdk-17:
   extends: tests
   image: eclipse-temurin:17
 
+tests:jdk-21:
+  extends: tests
+  image: eclipse-temurin:21
+
 publish:
   stage: deploy
   script: