diff --git a/.github/workflows/test-coverage.yaml b/.github/workflows/test-coverage.yaml
index 5798e84..437ddcd 100644
--- a/.github/workflows/test-coverage.yaml
+++ b/.github/workflows/test-coverage.yaml
@@ -21,6 +21,7 @@ jobs:
         
         ruby:
           - ruby
+          - head
     
     steps:
     - uses: actions/checkout@v6