diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 9380f8e..af40cc6 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -35,6 +35,7 @@ jobs:
             experimental: true
           - os: ubuntu
             ruby: head
+            experimental: true
 
     steps:
       - uses: actions/checkout@v4