diff --git a/action.yml b/action.yml
index c45bc4f..e5ca179 100644
--- a/action.yml
+++ b/action.yml
@@ -14,6 +14,7 @@ runs:
       uses: actions/checkout@v3
     - 
       continue-on-error: true
+      shell: bash
       id: check-changes
       name: "check if latest commit is within 24 hrs"
       run: "test -z $(git rev-list --after=\"24 hours\" ${{ github.sha }}) && echo \"::set-output name=changes::true\""