diff --git a/action.yml b/action.yml
index 40104c4..4361f82 100644
--- a/action.yml
+++ b/action.yml
@@ -37,6 +37,7 @@ runs:
         YARN_NPM_AUTH_TOKEN: ${{ inputs.npm-token }}
         PUBLISH_NPM_TAG: ${{ inputs.npm-tag }}
     - id: install-pkdiff
+      shell: bash
       run: npm i -g pkdiff
     - id: generate-reports
       shell: bash