diff --git a/src/app.ts b/src/app.ts
index 2170bb042..16ea18a14 100644
--- a/src/app.ts
+++ b/src/app.ts
@@ -367,6 +367,9 @@ function startGateway(): void {
 }
 
 function gracefulExit(): void {
+  if (Platform.implemented('stop')) {
+    Platform.stop();
+  }
   AddonManager.unloadAddons();
   TunnelService.stop();
 }
diff --git a/src/platform.ts b/src/platform.ts
index d2e5b94ec..baadd9261 100644
--- a/src/platform.ts
+++ b/src/platform.ts
@@ -261,6 +261,7 @@ export const getNtpStatus = (): boolean => {
 
   return wrapPlatform<boolean>(platform, 'getNtpStatus')();
 };
+export const stop = wrapPlatform<string>(platform, 'stop');
 
 export const implemented = (fn: string): boolean => {
   if (platform === null) {
diff --git a/src/platforms/base.ts b/src/platforms/base.ts
index 724044df8..8176622d3 100644
--- a/src/platforms/base.ts
+++ b/src/platforms/base.ts
@@ -292,4 +292,11 @@ export default class BasePlatform {
   restartNtpSync(): boolean {
     throw new NotImplementedError('restartNtpSync');
   }
+
+  /**
+   * Gracefully stop any platform services on shutdown.
+   */
+  stop(): void {
+    throw new NotImplementedError('stop');
+  }
 }
diff --git a/src/platforms/linux-ubuntu-core.ts b/src/platforms/linux-ubuntu-core.ts
index 1d0b11a80..416663179 100644
--- a/src/platforms/linux-ubuntu-core.ts
+++ b/src/platforms/linux-ubuntu-core.ts
@@ -13,6 +13,13 @@ import NetworkManager, { ConnectionSettings } from './utilities/network-manager'
 import { LanMode, NetworkAddresses, WirelessNetwork } from './types';
 
 export class LinuxUbuntuCorePlatform extends BasePlatform {
+  /**
+   * Disconnect NetworkManager.
+   */
+  stop(): void {
+    NetworkManager.stop();
+  }
+
   /**
    * Get the current addresses for Wi-Fi and LAN.
    *
diff --git a/src/platforms/utilities/network-manager.ts b/src/platforms/utilities/network-manager.ts
index 3d3ef02c2..f50618854 100644
--- a/src/platforms/utilities/network-manager.ts
+++ b/src/platforms/utilities/network-manager.ts
@@ -36,6 +36,13 @@ class NetworkManager {
   // Note there can only be one system bus instance open at a time.
   private systemBus = DBus.getBus('system');
 
+  /**
+   * Disconnect the system bus.
+   */
+  stop(): void {
+    this.systemBus.disconnect();
+  }
+
   /**
    * Get a list of network adapters from the system network manager.
    *
@@ -147,28 +154,27 @@ class NetworkManager {
    */
   getDeviceConnection(path: string): Promise<string> {
     return new Promise((resolve, reject) => {
-      const systemBus = this.systemBus;
-      systemBus.getInterface(
+      this.systemBus.getInterface(
         'org.freedesktop.NetworkManager',
         path,
         'org.freedesktop.NetworkManager.Device',
-        function (error, iface) {
+        (error, iface) => {
           if (error) {
             console.error(error);
             reject();
             return;
           }
-          iface.getProperty('ActiveConnection', function (error, activeConnectionPath) {
+          iface.getProperty('ActiveConnection', (error, activeConnectionPath) => {
             if (error) {
               console.error(error);
               reject();
               return;
             }
-            systemBus.getInterface(
+            this.systemBus.getInterface(
               'org.freedesktop.NetworkManager',
               activeConnectionPath,
               'org.freedesktop.NetworkManager.Connection.Active',
-              function (error, iface) {
+              (error, iface) => {
                 if (error) {
                   console.error(error);
                   reject();
@@ -297,29 +303,28 @@ class NetworkManager {
    * @returns {Promise<Array<AddressData>>} Promise resolves with IP4Config object.
    */
   getDeviceIp4Config(path: string): Promise<Array<AddressData>> {
-    const systemBus = this.systemBus;
     return new Promise((resolve, reject) => {
-      systemBus.getInterface(
+      this.systemBus.getInterface(
         'org.freedesktop.NetworkManager',
         path,
         'org.freedesktop.NetworkManager.Device',
-        function (error, iface) {
+        (error, iface) => {
           if (error) {
             console.error(error);
             reject();
             return;
           }
-          iface.getProperty('Ip4Config', function (error, ip4ConfigPath) {
+          iface.getProperty('Ip4Config', (error, ip4ConfigPath) => {
             if (error) {
               console.error(error);
               reject();
               return;
             }
-            systemBus.getInterface(
+            this.systemBus.getInterface(
               'org.freedesktop.NetworkManager',
               ip4ConfigPath,
               'org.freedesktop.NetworkManager.IP4Config',
-              function (error, iface) {
+              (error, iface) => {
                 if (error) {
                   console.error(error);
                   reject();
@@ -350,9 +355,8 @@ class NetworkManager {
    * @returns {Promise<string>} The SSID of the access point.
    */
   getAccessPointSsid(path: string): Promise<string> {
-    const systemBus = this.systemBus;
     return new Promise((resolve, reject) => {
-      systemBus.getInterface(
+      this.systemBus.getInterface(
         'org.freedesktop.NetworkManager',
         path,
         'org.freedesktop.NetworkManager.AccessPoint',
@@ -386,9 +390,8 @@ class NetworkManager {
    * @returns {Promise<number>} The strength of the signal as a percentage.
    */
   getAccessPointStrength(path: string): Promise<number> {
-    const systemBus = this.systemBus;
     return new Promise((resolve, reject) => {
-      systemBus.getInterface(
+      this.systemBus.getInterface(
         'org.freedesktop.NetworkManager',
         path,
         'org.freedesktop.NetworkManager.AccessPoint',
@@ -420,13 +423,12 @@ class NetworkManager {
    * @returns {Promise<boolean>} true if encrypted, false if not.
    */
   async getAccessPointSecurity(path: string): Promise<boolean> {
-    const systemBus = this.systemBus;
     const wpaFlagRequest = new Promise((resolve, reject) => {
-      systemBus.getInterface(
+      this.systemBus.getInterface(
         'org.freedesktop.NetworkManager',
         path,
         'org.freedesktop.NetworkManager.AccessPoint',
-        function (error, iface) {
+        (error, iface) => {
           if (error) {
             console.error(error);
             reject();
@@ -446,7 +448,7 @@ class NetworkManager {
       );
     });
     const wpa2FlagRequest = new Promise((resolve, reject) => {
-      systemBus.getInterface(
+      this.systemBus.getInterface(
         'org.freedesktop.NetworkManager',
         path,
         'org.freedesktop.NetworkManager.AccessPoint',
@@ -536,9 +538,8 @@ class NetworkManager {
    * @returns {Promise<string>} Promise resolves with the DBUS object path of an access point.
    */
   getActiveAccessPoint(path: string): Promise<string> {
-    const systemBus = this.systemBus;
     return new Promise((resolve, reject) => {
-      systemBus.getInterface(
+      this.systemBus.getInterface(
         'org.freedesktop.NetworkManager',
         path,
         'org.freedesktop.NetworkManager.Device.Wireless',
@@ -632,9 +633,8 @@ class NetworkManager {
     secure: boolean,
     password: string
   ): Promise<void> {
-    const systemBus = this.systemBus;
     return new Promise((resolve, reject) => {
-      systemBus.getInterface(
+      this.systemBus.getInterface(
         'org.freedesktop.NetworkManager',
         '/org/freedesktop/NetworkManager',
         'org.freedesktop.NetworkManager',
@@ -695,9 +695,8 @@ class NetworkManager {
    *   deactivation or rejects with an Error on failure.
    */
   disconnectNetworkDevice(path: string): Promise<void> {
-    const systemBus = this.systemBus;
     return new Promise((resolve, reject) => {
-      systemBus.getInterface(
+      this.systemBus.getInterface(
         'org.freedesktop.NetworkManager',
         path,
         'org.freedesktop.NetworkManager.Device',
diff --git a/src/test/common.ts b/src/test/common.ts
index 76f25931b..c8d1f5cd4 100644
--- a/src/test/common.ts
+++ b/src/test/common.ts
@@ -14,6 +14,7 @@ import Events from '../models/events';
 import Logs from '../models/logs';
 import Things from '../models/things';
 import UserProfile from '../user-profile';
+import * as Platform from '../platform';
 import e2p from 'event-to-promise';
 import fs from 'fs';
 import path from 'path';
@@ -91,6 +92,9 @@ afterEach(async () => {
 });
 
 afterAll(async () => {
+  if (Platform.implemented('stop')) {
+    Platform.stop();
+  }
   Logs.close();
   await addonManager.unloadAddons();