diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 48fa14fe..e09504ee 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,7 +16,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        java: [17]
+        java: [17, 21]
         scala: [3.3.1]
       fail-fast: false
     steps: