diff --git a/package.json b/package.json
index 3f6a89bbc5..9ff476e09e 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
   "scripts": {
     "clean": "shx rm -rf _bundles lib lib-esm",
     "build:bundle": "webpack",
-    "build:commonjs": "tsc",
+    "build:commonjs": "tsc; copyfiles -u 2 ./src/artifacts/*.json ./../0x.js/lib/src/artifacts;",
     "build:es6": "tsc -m es6 --outDir lib-esm",
     "build": "npm run clean && run-p build:*",
     "lint": "tslint src/ts/**/*",