diff --git a/.github/workflows/build-macos-wheels.yml b/.github/workflows/build-macos-wheels.yml
index 394377a..fed6aaa 100644
--- a/.github/workflows/build-macos-wheels.yml
+++ b/.github/workflows/build-macos-wheels.yml
@@ -7,7 +7,12 @@ jobs:
     runs-on: macos-latest
     strategy:
       matrix:
-        python-version: [3.6, 3.7, 3.8, 3.9, 3.10]
+        python-version:
+          - '3.6'
+          - '3.7'
+          - '3.8'
+          - '3.9'
+          - '3.10'
     steps:
     - uses: actions/checkout@v2
     - name: Set up Python ${{ matrix.python-version }}