diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 05fcf90..eec8c0e 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -64,7 +64,7 @@ jobs:
       - name: Build
         run: make
       - name: Run markdownlint with auto-fix
-        uses: DavidAnson/markdownlint-cli2-action@992badcdf24e3b8eb7e87ff9287fe931bcb00c6e # v20.0.0
+        uses: DavidAnson/markdownlint-cli2-action@30a0e04f1870d58f8d717450cc6134995f993c63 # v21.0.0
         with:
           fix: true # Enabled to improve reported errors
           globs: '**/*.md'