diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index e0475af..3251a0c 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -7,9 +7,9 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby: [ '2.6', '2.7', '3.0', '3.1', '3.2' ]
+        ruby: [ '2.6', '2.7', '3.0', '3.1', '3.2', '3.3' ]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Set up Ruby ${{ matrix.ruby }}
         uses: ruby/setup-ruby@v1
         with: