diff --git a/package.json b/package.json
index 00a21747f9..bbbee1155c 100644
--- a/package.json
+++ b/package.json
@@ -8,6 +8,7 @@
     "Daniel Schafer <dschafer@fb.com>"
   ],
   "license": "BSD-3-Clause",
+  "main": "index.js",
   "homepage": "https://github.com/graphql/graphql-js",
   "bugs": {
     "url": "https://github.com/graphql/graphql-js/issues"