diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 89ea3ed9..efbdb970 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -20,6 +20,7 @@ jobs:
       fail-fast: false
       matrix:
         ruby:
+          - '3.3.0-preview2'
           - '3.2'
           - '3.1'
           - '3.0'