diff --git a/.github/actions/build-postfix-exporter/action.yaml b/.github/actions/build-postfix-exporter/action.yaml
index 4234cae..cb93fb1 100644
--- a/.github/actions/build-postfix-exporter/action.yaml
+++ b/.github/actions/build-postfix-exporter/action.yaml
@@ -44,6 +44,7 @@ runs:
         cache-to: type=local,dest=/tmp/.buildx-cache-new/postfix-exporter
 
     - name: Move cache
+      shell: bash
       run: |
         rm -rf /tmp/.buildx-cache
         mv /tmp/.buildx-cache-new /tmp/.buildx-cache