diff --git a/apps/user_ldap/appinfo/app.php b/apps/user_ldap/appinfo/app.php
deleted file mode 100644
index 93a4253bd4..0000000000
--- a/apps/user_ldap/appinfo/app.php
+++ /dev/null
@@ -1,64 +0,0 @@
-<?php
-/**
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- *
- * @author Arthur Schiwon <blizzz@arthur-schiwon.de>
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Dominik Schmidt <dev@dominik-schmidt.de>
- * @author Joas Schilling <coding@schilljs.com>
- * @author Juan Pablo Villafáñez <jvillafanez@solidgear.es>
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- * @author Vinicius Cubas Brand <vinicius@eita.org.br>
- *
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program. If not, see <http://www.gnu.org/licenses/>
- *
- */
-
-$app = \OC::$server->query(\OCA\User_LDAP\AppInfo\Application::class);
-
-$helper = new \OCA\User_LDAP\Helper(\OC::$server->getConfig());
-$configPrefixes = $helper->getServerConfigurationPrefixes(true);
-if (count($configPrefixes) > 0) {
-	$ldapWrapper = new OCA\User_LDAP\LDAP();
-	$ocConfig = \OC::$server->getConfig();
-	$notificationManager = \OC::$server->getNotificationManager();
-	$notificationManager->registerNotifierService(\OCA\User_LDAP\Notification\Notifier::class);
-	$userSession = \OC::$server->getUserSession();
-
-	$userPluginManager = \OC::$server->query(\OCA\User_LDAP\UserPluginManager::class);
-	$groupPluginManager = \OC::$server->query(\OCA\User_LDAP\GroupPluginManager::class);
-
-	$userBackend  = new OCA\User_LDAP\User_Proxy(
-		$configPrefixes, $ldapWrapper, $ocConfig, $notificationManager, $userSession, $userPluginManager
-	);
-	$groupBackend  = new OCA\User_LDAP\Group_Proxy($configPrefixes, $ldapWrapper, $groupPluginManager);
-	// register user backend
-	OC_User::useBackend($userBackend);
-
-	// Hook to allow plugins to work on registered backends
-	OC::$server->getEventDispatcher()->dispatch('OCA\\User_LDAP\\User\\User::postLDAPBackendAdded');
-
-	\OC::$server->getGroupManager()->addBackend($groupBackend);
-
-	$app->registerBackendDependents();
-}
-
-\OCP\Util::connectHook(
-	'\OCA\Files_Sharing\API\Server2Server',
-	'preLoginNameUsedAsUserName',
-	'\OCA\User_LDAP\Helper',
-	'loginName2UserName'
-);
diff --git a/apps/user_ldap/lib/AppInfo/Application.php b/apps/user_ldap/lib/AppInfo/Application.php
index 6e5b73a9be..ddf40a13d3 100644
--- a/apps/user_ldap/lib/AppInfo/Application.php
+++ b/apps/user_ldap/lib/AppInfo/Application.php
@@ -28,14 +28,23 @@ namespace OCA\User_LDAP\AppInfo;
 
 use OCA\Files_External\Service\BackendService;
 use OCA\User_LDAP\Controller\RenewPasswordController;
+use OCA\User_LDAP\Group_Proxy;
+use OCA\User_LDAP\GroupPluginManager;
 use OCA\User_LDAP\Handler\ExtStorageConfigHandler;
+use OCA\User_LDAP\Helper;
 use OCA\User_LDAP\ILDAPWrapper;
 use OCA\User_LDAP\LDAP;
+use OCA\User_LDAP\Notification\Notifier;
+use OCA\User_LDAP\User_Proxy;
+use OCA\User_LDAP\UserPluginManager;
 use OCP\AppFramework\App;
+use OCP\AppFramework\Bootstrap\IBootContext;
+use OCP\AppFramework\Bootstrap\IBootstrap;
+use OCP\AppFramework\Bootstrap\IRegistrationContext;
 use OCP\AppFramework\IAppContainer;
 use OCP\IL10N;
 
-class Application extends App {
+class Application extends App implements IBootstrap {
 	public function __construct() {
 		parent::__construct('user_ldap');
 		$container = $this->getContainer();
@@ -63,15 +72,55 @@ class Application extends App {
 		});
 	}
 
-	public function registerBackendDependents() {
-		$container = $this->getContainer();
+	public function register(IRegistrationContext $context): void {
+	}
 
-		$container->getServer()->getEventDispatcher()->addListener(
+	public function boot(IBootContext $context): void {
+		$server = $context->getServerContainer();
+		$config = $server->getConfig();
+
+		$helper = new Helper($config);
+		$configPrefixes = $helper->getServerConfigurationPrefixes(true);
+		if (count($configPrefixes) > 0) {
+			$ldapWrapper = new LDAP();
+
+			$notificationManager = $server->getNotificationManager();
+			$notificationManager->registerNotifierService(Notifier::class);
+			$userSession = $server->getUserSession();
+
+			$userPluginManager = $server->query(UserPluginManager::class);
+			$groupPluginManager = $server->query(GroupPluginManager::class);
+
+			$userBackend  = new User_Proxy(
+				$configPrefixes, $ldapWrapper, $config, $notificationManager, $userSession, $userPluginManager
+			);
+			$groupBackend  = new Group_Proxy($configPrefixes, $ldapWrapper, $groupPluginManager);
+			// register user backend
+			\OC_User::useBackend($userBackend);
+
+			// Hook to allow plugins to work on registered backends
+			$server->getEventDispatcher()->dispatch('OCA\\User_LDAP\\User\\User::postLDAPBackendAdded');
+
+			$server->getGroupManager()->addBackend($groupBackend);
+
+			$this->registerBackendDependents($context->getAppContainer());
+		}
+
+		\OCP\Util::connectHook(
+			'\OCA\Files_Sharing\API\Server2Server',
+			'preLoginNameUsedAsUserName',
+			'\OCA\User_LDAP\Helper',
+			'loginName2UserName'
+		);
+	}
+
+	public function registerBackendDependents(IAppContainer $appContainer) {
+		$appContainer->getServer()->getEventDispatcher()->addListener(
 			'OCA\\Files_External::loadAdditionalBackends',
-			function () use ($container) {
-				$storagesBackendService = $container->query(BackendService::class);
-				$storagesBackendService->registerConfigHandler('home', function () use ($container) {
-					return $container->query(ExtStorageConfigHandler::class);
+			function () use ($appContainer) {
+				$storagesBackendService = $appContainer->query(BackendService::class);
+				$storagesBackendService->registerConfigHandler('home', function () use ($appContainer) {
+					return $appContainer->query(ExtStorageConfigHandler::class);
 				});
 			}
 		);