diff --git a/.github/workflows/main.yaml b/.github/workflows/main.yaml
index aa3b68c..fdb608f 100644
--- a/.github/workflows/main.yaml
+++ b/.github/workflows/main.yaml
@@ -9,7 +9,7 @@ jobs:
     runs-on: macos-latest
     strategy:
       matrix:
-        python: [3.9, 3.10, 3.11]
+        python: ["3.9", "3.10", "3.11"]
         target: [x86_64, universal2-apple-darwin]
     steps:
       - uses: actions/checkout@v2
@@ -46,7 +46,7 @@ jobs:
     strategy:
       matrix:
         target: [x64, x86]
-        python: [3.9, 3.10, 3.11]
+        python: ["3.9", "3.10", "3.11"]
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-python@v2
@@ -86,7 +86,7 @@ jobs:
     strategy:
       matrix:
         target: [x86_64]
-        python: [3.9, 3.10, 3.11]
+        python: ["3.9", "3.10", "3.11"]
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-python@v2