diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index e717255b..359924fd 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -13,6 +13,7 @@ jobs:
         ruby:
           - jruby-9.4
           - truffleruby
+          - "3.3"
           - "3.2"
           - "3.1"
           - "3.0"