diff --git a/lib/AppWhitelist.php b/lib/AppWhitelist.php
index 02cafc9a..2973ae8e 100644
--- a/lib/AppWhitelist.php
+++ b/lib/AppWhitelist.php
@@ -23,11 +23,11 @@
 
 use OCP\App\IAppManager;
 use OCP\IL10N;
-use OCP\ILogger;
 use OCP\IRequest;
 use OCP\IURLGenerator;
 use OCP\IUser;
 use OCP\Template;
+use Psr\Log\LoggerInterface;
 
 /**
  * Only allow whitelisted apps to be accessed by guests
@@ -35,20 +35,8 @@
  * @package OCA\Guests
  */
 class AppWhitelist {
-	/** @var Config */
-	private $config;
-	/** @var GuestManager */
-	private $guestManager;
-	/** @var IL10N */
-	private $l10n;
-	/** @var IAppManager */
-	private $appManager;
-	/** @var string */
-	private $baseUrl;
-	/** @var int */
-	private $baseUrlLength;
-	/** @var ILogger */
-	private $logger;
+	private string $baseUrl;
+	private int $baseUrlLength;
 
 	public const WHITELIST_ALWAYS = ',core,theming,settings,avatar,files,heartbeat,dav,guests,impersonate,accessibility,terms_of_service,dashboard,weather_status,user_status,apporder';
 
@@ -62,23 +50,18 @@ class AppWhitelist {
 	 * @param IL10N $l10n
 	 * @param IAppManager $appManager
 	 * @param IURLGenerator $urlGenerator
-	 * @param ILogger $logger
+	 * @param LoggerInterface $logger
 	 */
 	public function __construct(
-		Config $config,
-		GuestManager $guestManager,
-		IL10N $l10n,
-		IAppManager $appManager,
 		IURLGenerator $urlGenerator,
-		ILogger $logger
+		private Config $config,
+		private GuestManager $guestManager,
+		private IL10N $l10n,
+		private IAppManager $appManager,
+		private LoggerInterface $logger,
 	) {
-		$this->config = $config;
-		$this->guestManager = $guestManager;
-		$this->l10n = $l10n;
-		$this->appManager = $appManager;
 		$this->baseUrl = $urlGenerator->getBaseUrl();
 		$this->baseUrlLength = strlen($this->baseUrl);
-		$this->logger = $logger;
 	}
 
 	public function isAppWhitelisted($appId): bool {
@@ -104,7 +87,7 @@ public function isUrlAllowed(IUser $user, $url): bool {
 					echo "[]";
 					exit;
 				}
-				$this->logger->info("Blocking access to non-whitelisted app ($app) for guest", ['app' => 'guests']);
+				$this->logger->notice("Blocking access to non-whitelisted app ($app) for guest", ['app' => 'guests']);
 				return false;
 			}
 		} else {
diff --git a/lib/Listener/ShareAutoAcceptListener.php b/lib/Listener/ShareAutoAcceptListener.php
index 0b12359f..235e01d6 100644
--- a/lib/Listener/ShareAutoAcceptListener.php
+++ b/lib/Listener/ShareAutoAcceptListener.php
@@ -28,32 +28,22 @@
 use OCA\Guests\UserBackend;
 use OCP\EventDispatcher\Event;
 use OCP\EventDispatcher\IEventListener;
-use OCP\ILogger;
 use OCP\IUserManager;
 use OCP\Share\Events\ShareCreatedEvent;
 use OCP\Share\IManager as ShareManager;
 use OCP\Share\IShare;
+use Psr\Log\LoggerInterface;
 
 /**
  * @template-implements IEventListener<Event>
  */
 class ShareAutoAcceptListener implements IEventListener {
 
-	/** @var IUserManager */
-	private $userManager;
-
-	/** @var ShareManager */
-	private $shareManager;
-
-	/** @var ILogger */
-	private $logger;
-
-	public function __construct(IUserManager $userManager,
-		ShareManager $shareManager,
-		ILogger $logger) {
-		$this->userManager = $userManager;
-		$this->shareManager = $shareManager;
-		$this->logger = $logger;
+	public function __construct(
+		private IUserManager $userManager,
+		private ShareManager $shareManager,
+		private LoggerInterface $logger,
+	) {
 	}
 
 	public function handle(Event $event): void {
diff --git a/lib/Mail.php b/lib/Mail.php
index 870e6510..ec9c0db0 100644
--- a/lib/Mail.php
+++ b/lib/Mail.php
@@ -23,7 +23,6 @@
 
 use OCP\Defaults;
 use OCP\IConfig;
-use OCP\ILogger;
 use OCP\IURLGenerator;
 use OCP\IUserManager;
 use OCP\IUserSession;
@@ -31,50 +30,20 @@
 use OCP\Mail\IMailer;
 use OCP\Share;
 use OCP\Util;
+use Psr\Log\LoggerInterface;
 
 class Mail {
 
-	/** @var IConfig */
-	private $config;
-
-	/** @var ILogger */
-	private $logger;
-
-	/** @var IUserSession */
-	private $userSession;
-
-	/** @var IMailer */
-	private $mailer;
-
-	/** @var Defaults */
-	private $defaults;
-
-	/** @var IFactory */
-	private $l10nFactory;
-
-	private $userManager;
-
-	/** @var  IURLGenerator */
-	private $urlGenerator;
-
 	public function __construct(
-		IConfig $config,
-		ILogger $logger,
-		IUserSession $userSession,
-		IMailer $mailer,
-		Defaults $defaults,
-		IFactory $l10nFactory,
-		IUserManager $userManager,
-		IURLGenerator $urlGenerator
+		private IConfig $config,
+		private LoggerInterface $logger,
+		private IUserSession $userSession,
+		private IMailer $mailer,
+		private Defaults $defaults,
+		private IFactory $l10nFactory,
+		private IUserManager $userManager,
+		private IURLGenerator $urlGenerator,
 	) {
-		$this->config = $config;
-		$this->logger = $logger;
-		$this->userSession = $userSession;
-		$this->mailer = $mailer;
-		$this->defaults = $defaults;
-		$this->l10nFactory = $l10nFactory;
-		$this->userManager = $userManager;
-		$this->urlGenerator = $urlGenerator;
 	}
 
 	/**
diff --git a/tests/stub.php b/tests/stub.php
index 94d5ff40..47f270f1 100644
--- a/tests/stub.php
+++ b/tests/stub.php
@@ -453,38 +453,6 @@ public function getFileInfo(): \OCP\Files\FileInfo {
 	}
 }
 
-namespace OC\BackgroundJob {
-
-	use OCP\BackgroundJob\IJob;
-	use OCP\BackgroundJob\IJobList;
-	use OCP\ILogger;
-
-	abstract class TimedJob implements IJob {
-		public function execute(IJobList $jobList, ?ILogger $logger = null) {
-		}
-
-		abstract protected function run($argument);
-
-		public function setId(int $id) {
-		}
-
-		public function setLastRun(int $lastRun) {
-		}
-
-		public function setArgument($argument) {
-		}
-
-		public function getId() {
-		}
-
-		public function getLastRun() {
-		}
-
-		public function getArgument() {
-		}
-	}
-}
-
 namespace OC\Files\Mount {
 	use OC\Files\Storage\Storage;
 	use OCP\Files\Mount\IMountPoint;
diff --git a/tests/unit/AppWhitelistTest.php b/tests/unit/AppWhitelistTest.php
index 85ae3852..01215166 100644
--- a/tests/unit/AppWhitelistTest.php
+++ b/tests/unit/AppWhitelistTest.php
@@ -28,23 +28,18 @@
 use OCA\Guests\GuestManager;
 use OCP\App\IAppManager;
 use OCP\IL10N;
-use OCP\ILogger;
 use OCP\IURLGenerator;
 use OCP\IUser;
 use PHPUnit\Framework\MockObject\MockObject;
+use Psr\Log\LoggerInterface;
 use Test\TestCase;
 
 class AppWhitelistTest extends TestCase {
-	/** @var Config|MockObject */
-	private $config;
-	/** @var GuestManager|MockObject */
-	private $guestManager;
-	/** @var IL10N|MockObject */
-	private $l10n;
-	/** @var IAppManager|MockObject */
-	private $appManager;
-	/** @var IURLGenerator|MockObject */
-	private $urlGenerator;
+	private Config&MockObject $config;
+	private GuestManager&MockObject $guestManager;
+	private IL10N&MockObject $l10n;
+	private IAppManager&MockObject $appManager;
+	private IURLGenerator&MockObject $urlGenerator;
 
 	/** @var AppWhitelist */
 	private $appWhitelist;
@@ -61,12 +56,12 @@ protected function setUp(): void {
 			->willReturn('');
 
 		$this->appWhitelist = new AppWhitelist(
+			$this->urlGenerator,
 			$this->config,
 			$this->guestManager,
 			$this->l10n,
 			$this->appManager,
-			$this->urlGenerator,
-			$this->createMock(ILogger::class)
+			$this->createMock(LoggerInterface::class)
 		);
 	}