diff --git a/package.json b/package.json
index 0bf487482aa..5e14a1fc906 100644
--- a/package.json
+++ b/package.json
@@ -11,6 +11,7 @@
     "url": "https://github.com/facebookincubator/create-react-app/issues"
   },
   "scripts": {
+    "postinstall": "npm run build",
     "start": "node scripts/start.js --debug-template",
     "build": "node scripts/build.js --debug-template",
     "create-react-app": "node global-cli/index.js --scripts-version \"$PWD/`npm pack`\""