diff --git a/package.json b/package.json
index a92b9d6..3cdaf4f 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
   "main": "index.js",
   "scripts": {
     "dev": "webpack-dev-server --inline --hot --quiet",
-    "build": "NODE_ENV=production webpack --progress --hide-modules"
+    "build": "cross-env NODE_ENV=production webpack --progress --hide-modules"
   },
   "repository": {
     "type": "git",
@@ -23,6 +23,7 @@
     "babel-plugin-transform-runtime": "^6.1.18",
     "babel-preset-es2015": "^6.1.18",
     "babel-runtime": "^6.1.18",
+    "cross-env": "^1.0.5",
     "css-loader": "^0.21.0",
     "style-loader": "^0.13.0",
     "stylus-loader": "^1.4.0",