diff --git a/package.json b/package.json
index 8c3425d9..2a07a702 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@uiw/react-markdown-preview",
-  "version": "4.0.12",
+  "version": "4.0.13",
   "description": "React component preview markdown text in web browser. The minimal amount of CSS to replicate the GitHub Markdown style.",
   "homepage": "https://uiwjs.github.io/react-markdown-preview",
   "main": "lib/index.js",
@@ -32,7 +32,7 @@
     "lib",
     "esm",
     "markdown.css",
-    "src/*.{js,json}"
+    "src/*.{ts,less}"
   ],
   "keywords": [
     "react",