diff --git a/.github/workflows/python_unittests.yml b/.github/workflows/python_unittests.yml
index cdabf8bd..b802c693 100644
--- a/.github/workflows/python_unittests.yml
+++ b/.github/workflows/python_unittests.yml
@@ -11,7 +11,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.9, 3.10, 3.11, 3.12]
+        python-version: [3.9, '3.10', '3.11', '3.12']
         os: [ubuntu-latest, windows-latest, macos-latest]
 
     runs-on: ${{ matrix.os }}