diff --git a/docs/research/kcl-version-selection-design.md b/docs/research/kcl-version-selection-design.md
index 6e71a51bd..ee6dbffc3 100644
--- a/docs/research/kcl-version-selection-design.md
+++ b/docs/research/kcl-version-selection-design.md
@@ -1,4 +1,4 @@
-<h4>KCL version selection strategy</h4>
+<h2>KCL version selection strategy</h2>
 
 **Author**:  Akash Kumar