diff --git a/package.json b/package.json
index ca4d0b4..17778e4 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,8 @@
     "build:lib": "babel src --out-dir lib",
     "build:watch": "npm run build:lib -- --watch",
     "build:interactive-docs": "browserify -e examples/interactive-docs/example.js -o examples/interactive-docs/example.bundle.js",
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "postinstall": "npm run build:lib"
   },
   "repository": {
     "type": "git",