diff --git a/action.yml b/action.yml
index a514b0a..6a09f14 100644
--- a/action.yml
+++ b/action.yml
@@ -28,3 +28,4 @@ runs:
       id: hello
     - name: Echo the greeting's time
       run: echo 'The time was ${{ steps.hello.outputs.time }}.'
+      shell: bash