diff --git a/tests/bootstrap.php b/tests/bootstrap.php
index 519cadd02..ee99d2c69 100644
--- a/tests/bootstrap.php
+++ b/tests/bootstrap.php
@@ -1,11 +1,17 @@
 <?php
 
+declare(strict_types=1);
+
 /**
  * SPDX-FileCopyrightText: 2016 Nextcloud GmbH and Nextcloud contributors
  * SPDX-License-Identifier: AGPL-3.0-or-later
  */
+
+use OCP\App\IAppManager;
+use OCP\Server;
+
 require_once __DIR__ . '/../../../lib/base.php';
+require_once __DIR__ . '/../../../tests/autoload.php';
 require_once __DIR__ . '/../vendor/autoload.php';
 
-\OC::$loader->addValidRoot(OC::$SERVERROOT . '/tests');
-\OC_App::loadApp('contacts');
+Server::get(IAppManager::class)->loadApp('contacts');