diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 75b86721..822cd239 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,4 +8,6 @@ jobs:
   build:
     name: Verify
     uses: takari/takari-gh-actions/.github/workflows/ci.yml@v2
+    with:
+      jdk-matrix: '[ 11,17,21 ]' # leave out 8 for now