diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index bc4aeca..33ec5d1 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -10,7 +10,8 @@ jobs:
     services:
       redis:
         image: redis
-        ports: [6379:6379]
+        ports:
+          - 6379:6379
     steps:
       - name: Setup Python 3.6
         uses: actions/setup-python@v1