diff --git a/package.json b/package.json
index a5137f5..1457002 100644
--- a/package.json
+++ b/package.json
@@ -34,6 +34,6 @@
     "webpack-cli": "^3.3.11"
   },
   "scripts": {
-    "build": "yarn ts-node ./mkshims.ts && yarn webpack"
+    "build": "yarn webpack && yarn ts-node ./mkshims.ts"
   }
 }