diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index ad3483c0..7fa6129e 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -19,6 +19,7 @@ jobs:
           - "3.0"
           - "3.1"
           - "3.2"
+          - "3.3"
           - "jruby-9.4"
     steps:
       - name: Checkout code