diff --git a/.github/workflows/markdown-lint.yml b/.github/workflows/markdown-lint.yml
index ce9b4fac8..cd4a58371 100644
--- a/.github/workflows/markdown-lint.yml
+++ b/.github/workflows/markdown-lint.yml
@@ -18,11 +18,9 @@ jobs:
       - name: Get changed files
         id: changed_files
         run: |
-          git diff --name-only -r HEAD^1 HEAD | while read -r file; do
-            echo "*/${file}"
-          done
+         echo "::set-output name=files::$(git show --pretty="" --name-only ${{ github.sha }} | grep '\.md$' | tr '\n' ',' | sed 's/,$//')"
       
       - name: Markdown Linter
         uses: DavidAnson/markdownlint-cli2-action@v15
         with:
-          files: ${{ steps.changed_files.outputs.stdout }}
+          globs: ${{ steps.changed_files.outputs.files }}