diff --git a/.github/workflows/test_branches.yml b/.github/workflows/test_branches.yml
index 5dca79f294e..661d86ef890 100644
--- a/.github/workflows/test_branches.yml
+++ b/.github/workflows/test_branches.yml
@@ -86,7 +86,7 @@ jobs:
           PACKAGES: pytest-qt
 
         - os: ubuntu-latest
-          python: 3.9
+          python: '3.10'
           other: /mpi
           mpi: 3
           skip_doctest: 1