diff --git a/package.json b/package.json
index e1bf2a8..bb8e97d 100644
--- a/package.json
+++ b/package.json
@@ -6,6 +6,7 @@
   "web": "dist/jalaliday.umd.min.js",
   "module": "dist/jalaliday.esm.js",
   "jsnext:main": "dist/jalaliday.esm.js",
+  "types": "index.d.ts",
   "scripts": {
     "test": "yarn build && jest",
     "lint": "eslint src/* test/*",