diff --git a/.github/workflows/markdown-lint.yml b/.github/workflows/markdown-lint.yml
index 861690a51d..36612fd21c 100644
--- a/.github/workflows/markdown-lint.yml
+++ b/.github/workflows/markdown-lint.yml
@@ -17,7 +17,7 @@ jobs:
           !data/planet/**/*.md
           !data/changelog/**/*.md
         separator: ","
-    - uses: DavidAnson/markdownlint-cli2-action@v20
+    - uses: DavidAnson/markdownlint-cli2-action@v21
       if: steps.changed-files.outputs.any_changed == 'true'
       with:
         globs: ${{ steps.changed-files.outputs.all_changed_files }}