diff --git a/package.json b/package.json
index 7218bff..663f31d 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "lottery-wheel",
   "version": "2.0.1",
   "description": "A library helps you performing a wheel for lottery game.",
-  "main": "index.js",
+  "main": "src/index.js",
   "scripts": {
     "build": "rollup -c rollup.config.js",
     "lint": "standard --fix src/*.js",