diff --git a/package.json b/package.json
index 7df3358..38b4cc7 100644
--- a/package.json
+++ b/package.json
@@ -48,6 +48,7 @@
     "esdoc-inject-script-plugin": "1.0.0",
     "esdoc-inject-style-plugin": "1.0.0",
     "esdoc-standard-plugin": "1.0.0",
+    "np": "6.2.1",
     "nyc": "15.0.1"
   },
   "files": [
@@ -73,9 +74,10 @@
     "type": "git"
   },
   "scripts": {
-    "build": "babel src -d lib",
+    "build": "rm -rf lib && babel src -d lib",
     "cover": "nyc --reporter=lcov npm test",
-    "prepublish": "npm run build",
+    "prepare": "npm run build",
+    "release": "np",
     "test": "ava"
   }
 }