diff --git a/.github/workflows/python-package-ubuntu.yml b/.github/workflows/python-package-ubuntu.yml
index a777340..9391c02 100644
--- a/.github/workflows/python-package-ubuntu.yml
+++ b/.github/workflows/python-package-ubuntu.yml
@@ -23,7 +23,7 @@ jobs:
     - name: Set up Python 3.10
       uses: actions/setup-python@v2
       with:
-        python-version: 3.10
+        python-version: "3.10"
 
     - name: Prepare Python environment
       run: |