diff --git a/packages/gui/package.json b/packages/gui/package.json
index f84eda4..9add504 100644
--- a/packages/gui/package.json
+++ b/packages/gui/package.json
@@ -8,7 +8,6 @@
   },
   "license": "MPL-2.0",
   "homepage": "https://github.com/docmirror/dev-sidecar",
-  "main": "background.js",
   "scripts": {
     "serve": "vue-cli-service serve",
     "lint": "vue-cli-service lint",
@@ -49,7 +48,7 @@
     "electron-builder": "^25.0.6",
     "electron-icon-builder": "^2.0.1",
     "json5-loader": "^4.0.1",
-    "vue-cli-plugin-electron-builder": "^2.1.1"
+    "vue-cli-plugin-electron-builder": "^3.0.0-alpha.4"
   },
   "browserslist": [
     "> 1%",
diff --git a/packages/gui/vue.config.js b/packages/gui/vue.config.js
index 9a39c7c..fcb013f 100644
--- a/packages/gui/vue.config.js
+++ b/packages/gui/vue.config.js
@@ -1,14 +1,12 @@
 const path = require('path')
 const webpack = require('webpack')
+const { defineConfig } = require('@vue/cli-service')
 
 const publishUrl = process.env.VUE_APP_PUBLISH_URL
 const publishProvider = process.env.VUE_APP_PUBLISH_PROVIDER
 console.log('Publish url:', publishUrl)
 
-/**
- * @type {import('@vue/cli-service').ProjectOptions}
- */
-module.exports = {
+module.exports = defineConfig({
   pages: {
     index: {
       entry: 'src/main.js',
@@ -35,6 +33,7 @@ module.exports = {
   },
   pluginOptions: {
     electronBuilder: {
+      mainProcessFile: "./src/background.js",
       // Ref: https://github.com/nklayman/vue-cli-plugin-electron-builder/issues/1891
       customFileProtocol: './',
       externals: [
@@ -116,4 +115,4 @@ module.exports = {
       },
     },
   },
-}
+})
diff --git a/packages/mitmproxy/src/lib/choice/index.js b/packages/mitmproxy/src/lib/choice/index.js
index d603c83..964c2c6 100644
--- a/packages/mitmproxy/src/lib/choice/index.js
+++ b/packages/mitmproxy/src/lib/choice/index.js
@@ -1,4 +1,4 @@
-const LRUCache = require('lru-cache').default
+const LRUCache = require('lru-cache')
 const log = require('../../utils/util.log')
 
 const cacheSize = 1024
diff --git a/packages/mitmproxy/src/lib/dns/base.js b/packages/mitmproxy/src/lib/dns/base.js
index 2e8427d..14d2ca2 100644
--- a/packages/mitmproxy/src/lib/dns/base.js
+++ b/packages/mitmproxy/src/lib/dns/base.js
@@ -1,4 +1,4 @@
-const LRUCache = require('lru-cache').default
+const LRUCache = require('lru-cache')
 const log = require('../../utils/util.log')
 const { DynamicChoice } = require('../choice/index')