diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 57e7684..c95d5e6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,6 +22,7 @@ jobs:
         ruby:
           - "3.1"
           - "3.2"
+          - "3.3"
           # - "ruby-head"
     steps:
       - name: Install system dependencies