diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 922d3d3..db7cce3 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -13,6 +13,9 @@ jobs:
   test:
     name: test
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        ruby: [ '2.7.5', '3.1.2', '3.2.2', '3.3.0' ]
 
     steps:
       - name: checkout
@@ -21,6 +24,7 @@ jobs:
       - uses: ruby/setup-ruby@5f19ec79cedfadb78ab837f95b87734d0003c899 # pin@v1.173.0
         with:
           bundler-cache: true
+          ruby-version: ${{ matrix.ruby }}
 
       - name: test
         run: script/test -k