diff --git a/package.json b/package.json
index 3718f3e..aa26b44 100644
--- a/package.json
+++ b/package.json
@@ -22,6 +22,9 @@
   ],
   "main": "lib/cjs/index.js",
   "module": "lib/es/index.js",
+  "files": [
+    "lib/**"
+  ],
   "scripts": {
     "build": "rimraf lib && yarn build:es && yarn build:cjs",
     "build:es": "tsc --outDir lib/es --module es6",