diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 9cf35f5e..c9680074 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -5,7 +5,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: [2.7, '3.0', 3.1, 3.2, 3.3, truffleruby-head]
+        ruby: [2.7, '3.0', 3.1, 3.2, 3.3, 3.4, truffleruby-head]
 
     runs-on: ubuntu-latest