diff --git a/.github/workflows/pythonpackage.yml b/.github/workflows/pythonpackage.yml
index 9a3db60..e21b99a 100644
--- a/.github/workflows/pythonpackage.yml
+++ b/.github/workflows/pythonpackage.yml
@@ -14,7 +14,7 @@ jobs:
       max-parallel: 4
       fail-fast: false
       matrix:
-        python-version: [3.8, 3.9, 3.10]
+        python-version: ['3.8', '3.9', '3.10']
         config:
         - { os: ubuntu-latest, torch-version: "torch --index-url https://download.pytorch.org/whl/cpu"}
         - { os: windows-latest, torch-version: "torch"}