diff --git a/package.json b/package.json
index d9a8a67..eed03d8 100644
--- a/package.json
+++ b/package.json
@@ -5,6 +5,7 @@
   "main": "lib/index.js",
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1",
+    "prepublish": "npm run build",
     "build": "babel src/ -d lib/ --source-maps",
     "build:watch": "babel src/ --out-dir lib/ --source-maps --watch"
   },