diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 21c7ef8e..118c0790 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -17,6 +17,7 @@ jobs:
           - '3.0'
           - '3.1'
           - '3.2'
+          - '3.3'
           - 'ruby-head'
 
     steps: