diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5f436be..f54aa54 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -39,6 +39,8 @@ jobs:
         ruby: [2.3, 2.4, 2.5, 2.6, 2.7, '3.0', 3.1, 3.2, 3.3]
         experimental: [false]
         include:
+          - ruby: head
+            experimental: true
           - ruby: jruby-head
             experimental: true