diff --git a/.github/actions/auto-update/action.yaml b/.github/actions/auto-update/action.yaml
index c0e4270..20d9a49 100644
--- a/.github/actions/auto-update/action.yaml
+++ b/.github/actions/auto-update/action.yaml
@@ -5,6 +5,7 @@ runs:
   using: "composite"
   steps:
     - run: poetry run python main.py --all --auto_update --publish
+      shell: bash
 
     - name: Auto commit to repo.
       uses: stefanzweifel/git-auto-commit-action@v5