diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index a5df5a6..01c5a45 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -17,8 +17,9 @@ jobs:
   test:
     runs-on: ubuntu-latest
     strategy:
-      ruby: [2.6, 2.7]
-      rails: [5.2.4.4, 6.0.3.4]
+      matrix:
+        ruby: [2.6, 2.7]
+        rails: [5.2.4.4, 6.0.3.4]
     env:
       RAILS_VERSION: ${{ matrix.rails }}