diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7d953b1..6f539eb 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -60,4 +60,4 @@ jobs:
       - name: Install dependencies
         run: bundle install
       - name: Run tests
-        run: bundle exec rake
+        run: bundle exec ruby -S rake