diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 4a5d4ae..58ea323 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby-version: [2.5, 2.6, 2.7, 3.0]
+        ruby-version: [2.5, 2.6, 2.7, '3.0', 3.1, 3.2, 3.3]
 
     steps:
       - uses: actions/checkout@v2
@@ -25,4 +25,4 @@ jobs:
           ruby-version: ${{ matrix.ruby-version }}
           bundler-cache: true # runs 'bundle install' and caches installed gems automatically
       - name: Run tests
-        run: bundle exec rake
\ No newline at end of file
+        run: bundle exec rake