diff --git a/[fix] forge.config.js b/[fix] forge.config.js
index 1eb1710..61fed0e 100644
--- a/[fix] forge.config.js	
+++ b/[fix] forge.config.js	
@@ -1,9 +1,3 @@
 module.exports = {
-  packagerConfig: {},
-  rebuildConfig: {},
-  makers: [
-    {
-      name: '@electron-forge/maker-zip'
-    }
-  ]
+  makers: [{name: '@electron-forge/maker-zip'}]
 };
diff --git a/[fix] pacakge-json b/[fix] pacakge-json
index d9dd57b..832d046 100644
--- a/[fix] pacakge-json	
+++ b/[fix] pacakge-json	
@@ -4,35 +4,24 @@
   "version": "1.0.0",
   "description": "My Electron application description",
   "main": "src/index.js",
-  "scripts": {
-    "start": "electron-forge start",
-    "make": "electron-forge make"
-  },
-  "keywords": [],
   "author": {
     "name": "jhk0530",
     "email": "hwanistic@gmail.com"
   },
   "license": "MIT",
-   "repository": {
+  "repository": {
     "type": "git",
     "url": "https://github.com/zarathucorp/shiny-electron-template-m1"
   },
   "dependencies": {
     "axios": "0.27.2",
-    "electron-squirrel-startup": "^1.0.0",
     "esm": "^3.2.25",
     "execa": "^5.1.1"
   },
   "devDependencies": {
-    "@babel/core": "^7.22.20",
-    "@babel/plugin-transform-async-to-generator": "^7.22.5",
-    "@babel/preset-env": "^7.22.20",
-    "@babel/preset-react": "^7.22.15",
     "@electron-forge/cli": "^7.2.0",
     "@electron-forge/maker-zip": "^7.2.0",
-    "@electron-forge/plugin-auto-unpack-natives": "^7.2.0",
-    "electron": "^26.2.1",
-    "fs-extra": "^11.1.1"
+    "electron": "^26.6.7",
+    "fs-extra": "^11.2.0"
   }
 }
diff --git a/src/helpers.js b/src/helpers.js
deleted file mode 100644
index 28574dc..0000000
--- a/src/helpers.js
+++ /dev/null
@@ -1,35 +0,0 @@
-// Copyright (c) 2018 Dirk Schumacher, Noam Ross, Rich FitzJohn
-
-const randomInt = (min, max) => {
-  return Math.round(Math.random() * ((max + 1) - min) + min)
-}
-
-export const randomPort = () => {
-  // Those forbidden ports are in line with shiny
-  // https://github.com/rstudio/shiny/blob/288039162086e183a89523ac0aacab824ef7f016/R/server.R#L734
-  const forbiddenPorts = [3659, 4045, 6000, 6665, 6666, 6667, 6668, 6669, 6697];
-  while (true) {
-    let port = randomInt(3000, 8000)
-    if (forbiddenPorts.includes(port))
-      continue
-    return port
-  }
-}
-
-export const waitFor = (milliseconds) => {
-  return new Promise((resolve, _reject) => {
-    setTimeout(resolve, milliseconds);
-  })
-}
-
-export const getRPath = (platform) => {
-  if (platform === 'win32') {
-    return 'r-win'
-  } else if (platform === 'darwin') {
-    return 'r-mac'
-  } else if (platform === 'linux') {
-    return 'r-linux'
-  } else {
-    throw new Error('OS not supported')
-  }
-}
diff --git a/src/loading.css b/src/loading.css
index 27a20c2..7ed1902 100644
--- a/src/loading.css
+++ b/src/loading.css
@@ -18,13 +18,13 @@ IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
   
-  .spinner {
-    margin: 100px auto;
-    width: 50px;
-    height: 40px;
-    text-align: center;
-    font-size: 10px;
-  }
+.spinner {
+  margin: 100px auto;
+  width: 50px;
+  height: 40px;
+  text-align: center;
+  font-size: 10px;
+}
 
 .spinner > div {
   background-color: white;
@@ -72,8 +72,8 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 }
 
 #status {
-text-align: center;
-color: white;
-font-size: 10px;	
-font-family: Arial,Helvetica Neue,Helvetica,sans-serif; 
+  text-align: center;
+  color: white;
+  font-size: 10px;	
+  font-family: Arial,Helvetica Neue,Helvetica,sans-serif; 
 }
\ No newline at end of file
diff --git a/src/main.js b/src/main.js
index 6a40f8a..b68a9dc 100644
--- a/src/main.js
+++ b/src/main.js
@@ -6,33 +6,47 @@ import {
   BrowserWindow 
 } from 'electron'
 
-import path from 'path'
-import http from 'axios'
-import os from 'os'
-import execa from 'execa'
-import { 
-  randomPort, 
-  waitFor, 
-  getRPath 
-} from './helpers'
-
-const rPath = getRPath(os.platform())
+import path from 'path';
+import http from 'axios';
+import os from 'os';
+import execa from 'execa';
 
-let shutdown = false;
+// Helpers
 
-const rpath = path.join(app.getAppPath(), rPath)
-const libPath = path.join(rpath, 'library')
-const rscript = path.join(rpath, 'bin', 'R')
-const shinyAppPath = path.join(app.getAppPath(), 'shiny')
+const rPath = 'r-mac';
 
-const backgroundColor = '#2c3e50';
+const randomPort = (exclude) => {
+  let min = 3000;
+  let max = 8000;
+  let randomInt = Math.floor(Math.random() * (max - min + 1)) + min;
+  while (exclude.includes(randomInt)) {
+    randomInt = Math.floor(Math.random() * (max - min + 1)) + min;
+  }
+  return randomInt;
+}
 
-let rShinyProcess = null;
+let shinyPort = randomPort(
+  [3659, 4045, 5060, 5061, 6000, 6566, 6665, 6666, 6667, 6668, 6669, 6697]
+);
+// forbiden ports at 2024-01-28
+// https://chromium.googlesource.com/chromium/src.git/+/refs/heads/master/net/base/port_util.cc
 
-if (require('electron-squirrel-startup')) { // eslint-disable-line global-require
-  app.quit()
+const waitFor = (milliseconds) => {
+  return new Promise((resolve, _reject) => {
+    setTimeout(resolve, milliseconds);
+  })
 }
 
+const rpath = path.join(app.getAppPath(), rPath);
+const libPath = path.join(rpath, 'library');
+const rscript = path.join(rpath, 'bin', 'R');
+const shinyAppPath = path.join(app.getAppPath(), 'shiny');
+
+const backgroundColor = '#2c3e50'; // electron
+
+let shutdown = false;
+let rShinyProcess = null;
+
 const tryStartWebserver = async (attempt, progressCallback, onErrorStartup, onErrorLater, onSuccess) => {
    if (attempt > 100) {
      await progressCallback({attempt: attempt, code: 'failed'})
@@ -45,8 +59,6 @@ const tryStartWebserver = async (attempt, progressCallback, onErrorStartup, onEr
      return
    }
 
-   let shinyPort = randomPort()
-
    await progressCallback({attempt: attempt, code: 'start'})
 
    let shinyRunning = false