diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index f6ba117..a1373f9 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -13,7 +13,7 @@ jobs:
       redis: { image: redis, ports: ["6379:6379"] }
 
     strategy:
-      matrix: { ruby: ['3.0', '3.1', '3.2', head] }
+      matrix: { ruby: ['3.0', '3.1', '3.2', '3.3'] }
 
     steps:
     - name: Checkout code