diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 12e93ee..c042d70 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby-version: ['2.7', '3.0', '3.1', '3.2']
+        ruby-version: ['2.7', '3.0', '3.1', '3.2', '3.3']
 
     steps:
     - uses: actions/checkout@v2