diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 58102749..402a7baf 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -10,12 +10,12 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        ruby: [2.5, 2.6, 2.7, 3.0, 3.1, head, jruby, jruby-head]
+        ruby: [2.5, 2.6, 2.7, '3.0', 3.1, 3.2, 3.3, head, jruby, jruby-head]
 
     runs-on: ${{ matrix.os }}
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - uses: ruby/setup-ruby@v1
         with: