diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 4cabc9e..782d6e8 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby-version: [2.5, 2.6, 2.7, '3.0', 3.1, 3.2]
+        ruby-version: [2.5, 2.6, 2.7, '3.0', 3.1, 3.2, 3.3]
     name: Ruby ${{ matrix.ruby-version }}
     steps:
       - uses: actions/checkout@v3