diff --git a/package.json b/package.json
index 13afc3d..d04bb9f 100644
--- a/package.json
+++ b/package.json
@@ -25,8 +25,8 @@
     "test": "test"
   },
   "scripts": {
-    "build": "npm run build:umd",
-    "build:umd": "rollup -c",
+    "build": "rollup -c",
+    "postinstall": "rollup -c",
     "test": "jest",
     "release": "standard-version && git push --follow-tags && npm publish"
   },