diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 53a6e422..707dccf6 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -55,5 +55,5 @@ jobs:
       - run: python -m pip install -r requirements/ci.txt
       - run: tox -e ${{ inputs.tox-env }}
         if: ${{ !inputs.backend-version }}
-      - run: tox -e ${{ inputs.tox-env }} -- ${{ inputs.backend-version }}
+      - run: tox -e ${{ inputs.tox-env }} -- --scitacean-backend-version=${{ inputs.backend-version }}
         if: ${{ inputs.backend-version }}