diff --git a/.github/workflows/push_request.yaml b/.github/workflows/push_request.yaml
index de36d02..a9c253f 100644
--- a/.github/workflows/push_request.yaml
+++ b/.github/workflows/push_request.yaml
@@ -7,9 +7,9 @@ jobs:
   test:
     strategy:
       matrix:
-        python-version: [3.9, 3.10, 3.11, 3.12]
+        python-version: ["3.9", "3.10", "3.11", "3.12"]
         os-version: [ubuntu-latest, windows-latest, macos-latest]
-    runs-on: ${{ matrix.os-version }}
+    runs-on: "${{ matrix.os-version }}"
     steps:
       - uses: actions/checkout@v4
       - name: Set up Python ${{ matrix.python-version }}