diff --git a/.github/workflows/default.yml b/.github/workflows/default.yml
index 1f5706c2..bc1b6463 100644
--- a/.github/workflows/default.yml
+++ b/.github/workflows/default.yml
@@ -16,7 +16,7 @@ jobs:
     - name: Set up Python 3.10
       uses: actions/setup-python@v2
       with:
-        python-version: 3.10
+        python-version: '3.10'
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
@@ -31,7 +31,7 @@ jobs:
     - name: Set up Python 3.10
       uses: actions/setup-python@v2
       with:
-        python-version: 3.10
+        python-version: '3.10'
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
@@ -45,7 +45,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: [3.6, 3.7, 3.8, 3.9, 3.10]
+        python-version: [3.6, 3.7, 3.8, 3.9, '3.10']
         exclude:
           - os: macos-latest
             python-version: 3.6