diff --git a/README.md b/README.md
index 0fcc79e..9d8e5f5 100644
--- a/README.md
+++ b/README.md
@@ -56,7 +56,7 @@ new LlrtFunction(this, 'Handler', {
 
 Note that we enable this flag automatically on Windows platform.
 
-## Bundle Types
+### Bundle Types
 
 LLRT publishes several binaries with different sets of bundled SDKs: