diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 7fa6129e..2f8b6a92 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -20,6 +20,7 @@ jobs:
           - "3.1"
           - "3.2"
           - "3.3"
+          - "3.4"
           - "jruby-9.4"
     steps:
       - name: Checkout code