diff --git a/.markdownlint.json b/.markdownlint.json
index d43fa8c8..ac82ec00 100644
--- a/.markdownlint.json
+++ b/.markdownlint.json
@@ -1,6 +1,8 @@
 {
   "line-length": false,
-  "no-duplicate-heading": false,
+  "no-duplicate-heading": {
+    "siblings_only": true
+  },
   "proper-names": {
     "code_blocks": false,
     "names": [