diff -ura a/gruntfile.js b/gruntfile.js
--- a/gruntfile.js	2017-04-22 11:30:05.000000000 +0200
+++ b/gruntfile.js	2017-04-22 16:44:11.418409532 +0200
@@ -6,6 +6,7 @@
 
 module.exports = function (grunt) {
   var authCode
+  /*
   try {
     authCode = grunt.file.readJSON('secret/auth_code.json')
   } catch (e) {
@@ -13,6 +14,7 @@
       console.warn('secret/auth_code.json is not found. CodeSigning is not available.')
     }
   }
+  */
   const OSX_COMMON_NAME = authCode != null ? authCode.OSX_COMMON_NAME : ''
   const WIN_CERT_PASSWORD = authCode != null ? authCode.WIN_CERT_PASSWORD : ''
 
@@ -55,9 +57,6 @@
 
   grunt.initConfig(initConfig)
   grunt.loadNpmTasks('grunt-electron-installer')
-  if (!WIN) {
-    grunt.loadNpmTasks('grunt-electron-installer-debian')
-  }
 
   grunt.registerTask('compile', function () {
     var done = this.async()
diff -ura a/package.json b/package.json
--- a/package.json	2017-04-22 11:30:05.000000000 +0200
+++ b/package.json	2017-04-22 16:45:28.247081093 +0200
@@ -90,14 +90,13 @@
     "css-loader": "^0.19.0",
     "devtron": "^1.1.0",
     "dom-storage": "^2.0.2",
-    "electron-packager": "^6.0.0",
-    "electron-prebuilt": "^1.2.8",
+    "electron-packager": "^8.6.0",
     "eslint": "^3.13.1",
     "eslint-config-standard": "^6.2.1",
     "eslint-config-standard-jsx": "^3.2.0",
     "eslint-plugin-react": "^7.2.0",
     "faker": "^3.1.0",
-    "grunt": "^0.4.5",
-    "grunt-electron-installer": "^1.2.0",
+    "grunt": "^1.0.1",
+    "grunt-electron-installer": "^2.1.0",
     "history": "^1.17.0",
     "jsdom": "^9.4.2",
     "merge-stream": "^1.0.0",
@@ -109,14 +108,11 @@
     "react-router-redux": "^4.0.4",
     "standard": "^8.4.0",
     "style-loader": "^0.12.4",
-    "stylus": "^0.52.4",
+    "stylus": "^0.54.5",
     "stylus-loader": "^2.3.1",
     "webpack": "^1.12.2",
     "webpack-dev-server": "^1.12.0"
   },
-  "optionalDependencies": {
-    "grunt-electron-installer-debian": "^0.2.0"
-  },
   "optional": false,
   "ava": {
     "files": [