diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5f4cee5..b9c7ba5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -30,6 +30,8 @@ jobs:
           - "3.0"
           - "3.1"
           - "3.2"
+          - "3.3"
+          - "3.4"
           - "ruby-head"
     steps:
       - uses: actions/checkout@v3