diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6673c4a9..15927855 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -35,7 +35,7 @@ jobs:
 
       - run: git ls-files -- '*.c' '*.h' | xargs clang-format --dry-run --Werror
 
-      - uses: DavidAnson/markdownlint-cli2-action@v20
+      - uses: DavidAnson/markdownlint-cli2-action@v21
 
       - run: taplo fmt --check