diff --git a/package.json b/package.json
index 0240c75e..f7e7de1f 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
   "scripts": {
     "build:docs": "npm run build && node ./docs-generator.js",
     "start:docs": "npm run build:docs && npm run start --prefix docs",
-    "build": "nx build falso && npm run i18n && node ./post-build.js",
+    "build": "nx build falso && npm run i18n",
     "i18n": "nx i18n falso",
     "new": "nx workspace-generator falso",
     "format": "nx format",
@@ -49,7 +49,6 @@
     "jest": "29.4.3",
     "jsdoc-babel": "0.5.0",
     "jsdoc-to-markdown": "7.1.0",
-    "json-update": "5.3.0",
     "lint-staged": "11.1.2",
     "nx": "16.5.3",
     "prettier": "2.8.1",
diff --git a/post-build.js b/post-build.js
deleted file mode 100644
index de566e9d..00000000
--- a/post-build.js
+++ /dev/null
@@ -1,6 +0,0 @@
-const json = require('json-update');
-
-json.update('dist/packages/falso/package.json', { main: './index.cjs' })
-  .then(() => {
-    console.log('Changed umd to cjs');
-  });