diff --git a/package.json b/package.json
index 8e5d1d8..717dbd1 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
   "version": "1.0.0",
   "description": "Builder container image for docs as code",
   "dependencies": {
-    "markdownlint-cli2": "^0.15.0"
+    "markdownlint-cli2": "^0.21.0"
   },
   "engines": {
     "node": ">=20.0.0"