diff --git a/script/spec-runner.js b/script/spec-runner.js
index 80e00adaf0..7ca6828af3 100755
--- a/script/spec-runner.js
+++ b/script/spec-runner.js
@@ -129,9 +129,14 @@ async function runRemoteBasedElectronTests () {
 }
 
 async function runMainProcessElectronTests () {
-  const exe = path.resolve(BASE, utils.getElectronExec())
+  let exe = path.resolve(BASE, utils.getElectronExec())
+  const runnerArgs = ['electron/spec-main', ...unknownArgs.slice(2)]
+  if (process.platform === 'linux') {
+    runnerArgs.unshift(path.resolve(__dirname, 'dbus_mock.py'), exe)
+    exe = 'python'
+  }
 
-  const { status } = childProcess.spawnSync(exe, ['electron/spec-main', ...unknownArgs.slice(2)], {
+  const { status } = childProcess.spawnSync(exe, runnerArgs, {
     cwd: path.resolve(__dirname, '../..'),
     stdio: 'inherit'
   })
diff --git a/spec-main/ambient.d.ts b/spec-main/ambient.d.ts
index 6905e774ef..2e30b992aa 100644
--- a/spec-main/ambient.d.ts
+++ b/spec-main/ambient.d.ts
@@ -29,3 +29,5 @@ declare namespace Electron {
   }
   class View {}
 }
+
+declare module 'dbus-native';
diff --git a/spec/api-notification-dbus-spec.js b/spec-main/api-notification-dbus-spec.ts
similarity index 79%
rename from spec/api-notification-dbus-spec.js
rename to spec-main/api-notification-dbus-spec.ts
index e93adf4fee..cd442da204 100644
--- a/spec/api-notification-dbus-spec.js
+++ b/spec-main/api-notification-dbus-spec.ts
@@ -6,20 +6,19 @@
 //
 // See https://pypi.python.org/pypi/python-dbusmock to read about dbusmock.
 
-const { expect } = require('chai')
-const dbus = require('dbus-native')
-const Promise = require('bluebird')
-
-const { remote } = require('electron')
-const { app } = remote
+import { expect } from 'chai'
+import * as dbus from 'dbus-native'
+import { app } from 'electron'
+import { ifdescribe } from './spec-helpers'
+import { promisify } from 'util';
 
 const skip = process.platform !== 'linux' ||
              process.arch === 'ia32' ||
              process.arch.indexOf('arm') === 0 ||
-             !process.env.DBUS_SESSION_BUS_ADDRESS;
+             !process.env.DBUS_SESSION_BUS_ADDRESS
 
-(skip ? describe.skip : describe)('Notification module (dbus)', () => {
-  let mock, Notification, getCalls, reset
+ifdescribe(!skip)('Notification module (dbus)', () => {
+  let mock: any, Notification, getCalls: any, reset: any
   const realAppName = app.name
   const realAppVersion = app.getVersion()
   const appName = 'api-notification-dbus-spec'
@@ -35,10 +34,10 @@ const skip = process.platform !== 'linux' ||
     const bus = dbus.sessionBus()
     console.log(`session bus: ${process.env.DBUS_SESSION_BUS_ADDRESS}`)
     const service = bus.getService(serviceName)
-    const getInterface = Promise.promisify(service.getInterface, { context: service })
+    const getInterface = promisify(service.getInterface.bind(service))
     mock = await getInterface(path, iface)
-    getCalls = Promise.promisify(mock.GetCalls, { context: mock })
-    reset = Promise.promisify(mock.Reset, { context: mock })
+    getCalls = promisify(mock.GetCalls.bind(mock))
+    reset = promisify(mock.Reset.bind(mock))
   })
 
   after(async () => {
@@ -50,8 +49,8 @@ const skip = process.platform !== 'linux' ||
   })
 
   describe(`Notification module using ${serviceName}`, () => {
-    function onMethodCalled (done) {
-      function cb (name) {
+    function onMethodCalled (done: () => void) {
+      function cb (name: string) {
         console.log(`onMethodCalled: ${name}`)
         if (name === 'Notify') {
           mock.removeListener('MethodCalled', cb)
@@ -62,8 +61,8 @@ const skip = process.platform !== 'linux' ||
       return cb
     }
 
-    function unmarshalDBusNotifyHints (dbusHints) {
-      const o = {}
+    function unmarshalDBusNotifyHints (dbusHints: any) {
+      const o: Record<string, any> = {}
       for (const hint of dbusHints) {
         const key = hint[0]
         const value = hint[1][1][0]
@@ -72,7 +71,7 @@ const skip = process.platform !== 'linux' ||
       return o
     }
 
-    function unmarshalDBusNotifyArgs (dbusArgs) {
+    function unmarshalDBusNotifyArgs (dbusArgs: any) {
       return {
         app_name: dbusArgs[0][1][0],
         replaces_id: dbusArgs[1][1][0],
@@ -87,7 +86,7 @@ const skip = process.platform !== 'linux' ||
     before(done => {
       mock.on('MethodCalled', onMethodCalled(done))
       // lazy load Notification after we listen to MethodCalled mock signal
-      Notification = require('electron').remote.Notification
+      Notification = require('electron').Notification
       const n = new Notification({
         title: 'title',
         subtitle: 'subtitle',
diff --git a/spec/api-power-monitor-spec.js b/spec-main/api-power-monitor-spec.ts
similarity index 82%
rename from spec/api-power-monitor-spec.js
rename to spec-main/api-power-monitor-spec.ts
index 9f5425f8ec..38063252ca 100644
--- a/spec/api-power-monitor-spec.js
+++ b/spec-main/api-power-monitor-spec.ts
@@ -6,37 +6,30 @@
 //
 // See https://pypi.python.org/pypi/python-dbusmock for more information about
 // python-dbusmock.
-const chai = require('chai')
-const dirtyChai = require('dirty-chai')
-const dbus = require('dbus-native')
-const Promise = require('bluebird')
-
-const { expect } = chai
-chai.use(dirtyChai)
-
-const skip = process.platform !== 'linux' || !process.env.DBUS_SYSTEM_BUS_ADDRESS
+import { expect } from 'chai'
+import * as dbus from 'dbus-native'
+import { ifdescribe } from './spec-helpers'
+import { promisify } from 'util'
 
 describe('powerMonitor', () => {
-  let logindMock, dbusMockPowerMonitor, getCalls, emitSignal, reset
+  let logindMock: any, dbusMockPowerMonitor: any, getCalls: any, emitSignal: any, reset: any
 
-  if (!skip) {
+  ifdescribe(process.platform === 'linux' && process.env.DBUS_SYSTEM_BUS_ADDRESS != null)('when powerMonitor module is loaded with dbus mock', () => {
     before(async () => {
       const systemBus = dbus.systemBus()
       const loginService = systemBus.getService('org.freedesktop.login1')
-      const getInterface = Promise.promisify(loginService.getInterface, { context: loginService })
+      const getInterface = promisify(loginService.getInterface.bind(loginService))
       logindMock = await getInterface('/org/freedesktop/login1', 'org.freedesktop.DBus.Mock')
-      getCalls = Promise.promisify(logindMock.GetCalls, { context: logindMock })
-      emitSignal = Promise.promisify(logindMock.EmitSignal, { context: logindMock })
-      reset = Promise.promisify(logindMock.Reset, { context: logindMock })
+      getCalls = promisify(logindMock.GetCalls.bind(logindMock))
+      emitSignal = promisify(logindMock.EmitSignal.bind(logindMock))
+      reset = promisify(logindMock.Reset.bind(logindMock))
     })
 
     after(async () => {
       await reset()
     })
-  }
 
-  (skip ? describe.skip : describe)('when powerMonitor module is loaded with dbus mock', () => {
-    function onceMethodCalled (done) {
+    function onceMethodCalled (done: () => void) {
       function cb () {
         logindMock.removeListener('MethodCalled', cb)
       }
@@ -47,7 +40,7 @@ describe('powerMonitor', () => {
     before(done => {
       logindMock.on('MethodCalled', onceMethodCalled(done))
       // lazy load powerMonitor after we listen to MethodCalled mock signal
-      dbusMockPowerMonitor = require('electron').remote.powerMonitor
+      dbusMockPowerMonitor = require('electron').powerMonitor
     })
 
     it('should call Inhibit to delay suspend', async () => {
@@ -123,11 +116,10 @@ describe('powerMonitor', () => {
   })
 
   describe('when powerMonitor module is loaded', () => {
-    let powerMonitor
+    let powerMonitor: typeof Electron.powerMonitor
     before(() => {
-      powerMonitor = require('electron').remote.powerMonitor
+      powerMonitor = require('electron').powerMonitor
     })
-
     describe('powerMonitor.getSystemIdleState', () => {
       it('gets current system idle state', () => {
         // this function is not mocked out, so we can test the result's
@@ -148,7 +140,7 @@ describe('powerMonitor', () => {
         }).to.throw(/conversion failure/)
 
         expect(() => {
-          powerMonitor.getSystemIdleState('a')
+          powerMonitor.getSystemIdleState('a' as any)
         }).to.throw(/conversion failure/)
       })
     })
diff --git a/spec/package.json b/spec/package.json
index 6bd4ace004..87f58e63c5 100644
--- a/spec/package.json
+++ b/spec/package.json
@@ -8,7 +8,6 @@
   },
   "devDependencies": {
     "basic-auth": "^2.0.1",
-    "bluebird": "^3.5.3",
     "chai": "^4.2.0",
     "chai-as-promised": "^7.1.1",
     "coffeescript": "^2.4.1",
diff --git a/spec/yarn.lock b/spec/yarn.lock
index dfad9b4bd6..71922b21c5 100644
--- a/spec/yarn.lock
+++ b/spec/yarn.lock
@@ -126,11 +126,6 @@ bl@^1.0.0:
     readable-stream "^2.3.5"
     safe-buffer "^5.1.1"
 
-bluebird@^3.5.3:
-  version "3.5.4"
-  resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.5.4.tgz#d6cc661595de30d5b3af5fcedd3c0b3ef6ec5714"
-  integrity sha512-FG+nFEZChJrbQ9tIccIfZJBz3J7mLrAhxakAbnrJWn8d7aKOC+LWifa0G+p4ZqKp4y13T7juYvdhq9NzKdsrjw==
-
 brace-expansion@^1.1.7:
   version "1.1.11"
   resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-1.1.11.tgz#3c7fcbf529d87226f3d2f52b966ff5271eb441dd"