diff --git a/package.json b/package.json
index b643c2c..93b18a0 100644
--- a/package.json
+++ b/package.json
@@ -3,6 +3,7 @@
   "version": "2.0.1",
   "description": "ISO-639-1 codes",
   "main": "build/index.js",
+  "module": "src/index.js",
   "typings": "index.d.ts",
   "scripts": {
     "build": "webpack",