diff --git a/lib/Controller/AttachmentApiController.php b/lib/Controller/AttachmentApiController.php
index 181bca72a..9c0753682 100644
--- a/lib/Controller/AttachmentApiController.php
+++ b/lib/Controller/AttachmentApiController.php
@@ -29,11 +29,12 @@ use OCP\AppFramework\Http\DataResponse;
 use OCP\IRequest;
 
 class AttachmentApiController extends ApiController {
-	private $attachmentService;
-
-	public function __construct($appName, IRequest $request, AttachmentService $attachmentService) {
+	public function __construct(
+		$appName,
+		IRequest $request,
+		private AttachmentService $attachmentService,
+	) {
 		parent::__construct($appName, $request);
-		$this->attachmentService = $attachmentService;
 	}
 
 	/**
diff --git a/lib/Controller/AttachmentController.php b/lib/Controller/AttachmentController.php
index 82e000e81..0159ad0a7 100644
--- a/lib/Controller/AttachmentController.php
+++ b/lib/Controller/AttachmentController.php
@@ -28,13 +28,12 @@ use OCP\AppFramework\Controller;
 use OCP\IRequest;
 
 class AttachmentController extends Controller {
-
-	/** @var AttachmentService */
-	private $attachmentService;
-
-	public function __construct($appName, IRequest $request, AttachmentService $attachmentService) {
+	public function __construct(
+		$appName,
+		IRequest $request,
+		private AttachmentService $attachmentService,
+	) {
 		parent::__construct($appName, $request);
-		$this->attachmentService = $attachmentService;
 	}
 
 	/**
diff --git a/lib/Controller/BoardApiController.php b/lib/Controller/BoardApiController.php
index 4d7f6bee1..7e7b8a4f0 100644
--- a/lib/Controller/BoardApiController.php
+++ b/lib/Controller/BoardApiController.php
@@ -40,18 +40,16 @@ use Sabre\HTTP\Util;
  * @package OCA\Deck\Controller
  */
 class BoardApiController extends ApiController {
-	private $boardService;
-
 	/**
 	 * @param string $appName
-	 * @param IRequest $request
-	 * @param BoardService $service
-	 * @param $userId
 	 */
-	public function __construct($appName, IRequest $request, BoardService $service, $userId) {
+	public function __construct(
+		$appName,
+		IRequest $request,
+		private BoardService $boardService,
+		private $userId,
+	) {
 		parent::__construct($appName, $request);
-		$this->boardService = $service;
-		$this->userId = $userId;
 	}
 
 	/**
diff --git a/lib/Controller/BoardController.php b/lib/Controller/BoardController.php
index 946d98ed6..0220a43db 100644
--- a/lib/Controller/BoardController.php
+++ b/lib/Controller/BoardController.php
@@ -33,15 +33,14 @@ use OCP\AppFramework\Http\DataResponse;
 use OCP\IRequest;
 
 class BoardController extends ApiController {
-	private $userId;
-	private $boardService;
-	private $permissionService;
-
-	public function __construct($appName, IRequest $request, BoardService $boardService, PermissionService $permissionService, $userId) {
+	public function __construct(
+		$appName,
+		IRequest $request,
+		private BoardService $boardService,
+		private PermissionService $permissionService,
+		private $userId,
+	) {
 		parent::__construct($appName, $request);
-		$this->userId = $userId;
-		$this->boardService = $boardService;
-		$this->permissionService = $permissionService;
 	}
 
 	/**
@@ -144,7 +143,7 @@ class BoardController extends ApiController {
 	/**
 	 * @NoAdminRequired
 	 * @param $aclId
-	 * @return \OCP\AppFramework\Db\Entity
+	 * @return \OCP\AppFramework\Db\Entity|null
 	 */
 	public function deleteAcl($aclId) {
 		return $this->boardService->deleteAcl($aclId);
diff --git a/lib/Controller/BoardImportApiController.php b/lib/Controller/BoardImportApiController.php
index ec7e76cae..8ddbc11da 100644
--- a/lib/Controller/BoardImportApiController.php
+++ b/lib/Controller/BoardImportApiController.php
@@ -30,20 +30,13 @@ use OCP\AppFramework\OCSController;
 use OCP\IRequest;
 
 class BoardImportApiController extends OCSController {
-	/** @var BoardImportService */
-	private $boardImportService;
-	/** @var string */
-	private $userId;
-
 	public function __construct(
 		string $appName,
 		IRequest $request,
-		BoardImportService $boardImportService,
-		string $userId
+		private BoardImportService $boardImportService,
+		private string $userId,
 	) {
 		parent::__construct($appName, $request);
-		$this->boardImportService = $boardImportService;
-		$this->userId = $userId;
 	}
 
 	/**
diff --git a/lib/Controller/CardApiController.php b/lib/Controller/CardApiController.php
index 4a61b60ee..b864adc2a 100644
--- a/lib/Controller/CardApiController.php
+++ b/lib/Controller/CardApiController.php
@@ -38,21 +38,22 @@ use OCP\IRequest;
  * @package OCA\Deck\Controller
  */
 class CardApiController extends ApiController {
-	private $cardService;
-	private $userId;
-	private $assignmentService;
 
 	/**
 	 * @param string $appName
 	 * @param IRequest $request
 	 * @param CardService $cardService
+	 * @param AssignmentService $assignmentService
 	 * @param $userId
 	 */
-	public function __construct($appName, IRequest $request, CardService $cardService, AssignmentService $assignmentService, $userId) {
+	public function __construct(
+		string $appName,
+		IRequest $request,
+		private CardService $cardService,
+		private AssignmentService $assignmentService,
+		private $userId,
+	) {
 		parent::__construct($appName, $request);
-		$this->cardService = $cardService;
-		$this->userId = $userId;
-		$this->assignmentService = $assignmentService;
 	}
 
 	/**
diff --git a/lib/Controller/CardController.php b/lib/Controller/CardController.php
index e901ab00a..cc46a1a3b 100644
--- a/lib/Controller/CardController.php
+++ b/lib/Controller/CardController.php
@@ -29,15 +29,14 @@ use OCP\AppFramework\Controller;
 use OCP\IRequest;
 
 class CardController extends Controller {
-	private $userId;
-	private $cardService;
-	private $assignmentService;
-
-	public function __construct($appName, IRequest $request, CardService $cardService, AssignmentService $assignmentService, $userId) {
+	public function __construct(
+		$appName,
+		IRequest $request,
+		private CardService $cardService,
+		private AssignmentService $assignmentService,
+		private $userId,
+	) {
 		parent::__construct($appName, $request);
-		$this->userId = $userId;
-		$this->cardService = $cardService;
-		$this->assignmentService = $assignmentService;
 	}
 
 	/**
diff --git a/lib/Controller/CommentsApiController.php b/lib/Controller/CommentsApiController.php
index 425f8632e..51a0bfe2b 100644
--- a/lib/Controller/CommentsApiController.php
+++ b/lib/Controller/CommentsApiController.php
@@ -31,18 +31,15 @@ use OCP\AppFramework\OCSController;
 use OCP\IRequest;
 
 class CommentsApiController extends OCSController {
-
-	/** @var CommentService */
-	private $commentService;
-
 	public function __construct(
 		string $appName,
 		IRequest $request,
-		CommentService $commentService,
-		string $corsMethods = 'PUT, POST, GET, DELETE, PATCH', string $corsAllowedHeaders = 'Authorization, Content-Type, Accept', int $corsMaxAge = 1728000
+		private CommentService $commentService,
+		string $corsMethods = 'PUT, POST, GET, DELETE, PATCH',
+		string $corsAllowedHeaders = 'Authorization, Content-Type, Accept',
+		int $corsMaxAge = 1728000,
 	) {
 		parent::__construct($appName, $request, $corsMethods, $corsAllowedHeaders, $corsMaxAge);
-		$this->commentService = $commentService;
 	}
 
 	/**
diff --git a/lib/Controller/ConfigController.php b/lib/Controller/ConfigController.php
index d263994cb..90c4081b8 100644
--- a/lib/Controller/ConfigController.php
+++ b/lib/Controller/ConfigController.php
@@ -30,16 +30,12 @@ use OCP\AppFramework\OCSController;
 use OCP\IRequest;
 
 class ConfigController extends OCSController {
-	private $configService;
-
 	public function __construct(
 		$AppName,
 		IRequest $request,
-		ConfigService $configService
+		private ConfigService $configService,
 	) {
 		parent::__construct($AppName, $request);
-
-		$this->configService = $configService;
 	}
 
 	/**
diff --git a/lib/Controller/LabelApiController.php b/lib/Controller/LabelApiController.php
index 63cf2f513..188f7fbc0 100644
--- a/lib/Controller/LabelApiController.php
+++ b/lib/Controller/LabelApiController.php
@@ -35,21 +35,18 @@ use OCP\IRequest;
  * @package OCA\Deck\Controller
  */
 class LabelApiController extends ApiController {
-	private $labelService;
-	private $userId;
-
 	/**
 	 * @param string $appName
-	 * @param IRequest $request
-	 * @param LabelService $labelService
-	 * @param $userId
 	 */
-	public function __construct($appName, IRequest $request, LabelService $labelService, $userId) {
+	public function __construct(
+		$appName,
+		IRequest $request,
+		private LabelService $labelService,
+		private $userId,
+	) {
 		parent::__construct($appName, $request);
-		$this->labelService = $labelService;
-		$this->userId = $userId;
 	}
-	
+
 	/**
 	 * @NoAdminRequired
 	 * @CORS
diff --git a/lib/Controller/LabelController.php b/lib/Controller/LabelController.php
index 71794e749..f68c1a68f 100644
--- a/lib/Controller/LabelController.php
+++ b/lib/Controller/LabelController.php
@@ -28,11 +28,12 @@ use OCP\AppFramework\Controller;
 use OCP\IRequest;
 
 class LabelController extends Controller {
-	private $labelService;
-
-	public function __construct($appName, IRequest $request, LabelService $labelService) {
+	public function __construct(
+		$appName,
+		IRequest $request,
+		private LabelService $labelService,
+	) {
 		parent::__construct($appName, $request);
-		$this->labelService = $labelService;
 	}
 
 	/**
diff --git a/lib/Controller/OverviewApiController.php b/lib/Controller/OverviewApiController.php
index 9d082fd59..77ced003f 100644
--- a/lib/Controller/OverviewApiController.php
+++ b/lib/Controller/OverviewApiController.php
@@ -32,17 +32,13 @@ use OCP\AppFramework\OCSController;
 use OCP\IRequest;
 
 class OverviewApiController extends OCSController {
-
-	/** @var OverviewService */
-	private $dashboardService;
-
-	/** @var string */
-	private $userId;
-
-	public function __construct($appName, IRequest $request, OverviewService $dashboardService, $userId) {
+	public function __construct(
+		$appName,
+		IRequest $request,
+		private OverviewService $dashboardService,
+		private $userId,
+	) {
 		parent::__construct($appName, $request);
-		$this->dashboardService = $dashboardService;
-		$this->userId = $userId;
 	}
 
 	/**
diff --git a/lib/Controller/PageController.php b/lib/Controller/PageController.php
index 1f23bbde4..8008d187d 100644
--- a/lib/Controller/PageController.php
+++ b/lib/Controller/PageController.php
@@ -44,37 +44,23 @@ use OCP\IRequest;
 use OCP\IURLGenerator;
 
 class PageController extends Controller {
-	private PermissionService $permissionService;
 	private IInitialStateService $initialState;
-	private ConfigService $configService;
-	private IEventDispatcher $eventDispatcher;
-	private CardMapper $cardMapper;
-	private IURLGenerator $urlGenerator;
-	private CardService $cardService;
-	private IConfig $config;
 
 	public function __construct(
 		string $AppName,
 		IRequest $request,
-		PermissionService $permissionService,
+		private PermissionService $permissionService,
 		IInitialStateService $initialStateService,
-		ConfigService $configService,
-		IEventDispatcher $eventDispatcher,
-		CardMapper $cardMapper,
-		IURLGenerator $urlGenerator,
-		CardService $cardService,
-		IConfig $config
+		private ConfigService $configService,
+		private IEventDispatcher $eventDispatcher,
+		private CardMapper $cardMapper,
+		private IURLGenerator $urlGenerator,
+		private CardService $cardService,
+		private IConfig $config,
 	) {
 		parent::__construct($AppName, $request);
 
-		$this->permissionService = $permissionService;
 		$this->initialState = $initialStateService;
-		$this->configService = $configService;
-		$this->eventDispatcher = $eventDispatcher;
-		$this->cardMapper = $cardMapper;
-		$this->urlGenerator = $urlGenerator;
-		$this->cardService = $cardService;
-		$this->config = $config;
 	}
 
 	/**
diff --git a/lib/Controller/SearchController.php b/lib/Controller/SearchController.php
index 04bd2644e..25717f8df 100644
--- a/lib/Controller/SearchController.php
+++ b/lib/Controller/SearchController.php
@@ -34,15 +34,12 @@ use OCP\AppFramework\OCSController;
 use OCP\IRequest;
 
 class SearchController extends OCSController {
-
-	/**
-	 * @var SearchService
-	 */
-	private $searchService;
-
-	public function __construct(string $appName, IRequest $request, SearchService $searchService) {
+	public function __construct(
+		string $appName,
+		IRequest $request,
+		private SearchService $searchService,
+	) {
 		parent::__construct($appName, $request);
-		$this->searchService = $searchService;
 	}
 
 	/**
diff --git a/lib/Controller/SessionController.php b/lib/Controller/SessionController.php
index 0e6a66b7c..2a825c550 100644
--- a/lib/Controller/SessionController.php
+++ b/lib/Controller/SessionController.php
@@ -34,20 +34,13 @@ use OCP\AppFramework\OCSController;
 use OCP\IRequest;
 
 class SessionController extends OCSController {
-	private SessionService $sessionService;
-	private PermissionService $permissionService;
-	private BoardMapper $boardMapper;
-
 	public function __construct($appName,
 		IRequest $request,
-		SessionService $sessionService,
-		PermissionService $permissionService,
-		BoardMapper $boardMapper
+		private SessionService $sessionService,
+		private PermissionService $permissionService,
+		private BoardMapper $boardMapper,
 	) {
 		parent::__construct($appName, $request);
-		$this->sessionService = $sessionService;
-		$this->permissionService = $permissionService;
-		$this->boardMapper = $boardMapper;
 	}
 
 	/**
diff --git a/lib/Controller/StackApiController.php b/lib/Controller/StackApiController.php
index f210770de..f8b316f14 100644
--- a/lib/Controller/StackApiController.php
+++ b/lib/Controller/StackApiController.php
@@ -39,18 +39,16 @@ use Sabre\HTTP\Util;
  * @package OCA\Deck\Controller
  */
 class StackApiController extends ApiController {
-	private $boardService;
-	private $stackService;
-
 	/**
 	 * @param string $appName
-	 * @param IRequest $request
-	 * @param StackService $stackService
 	 */
-	public function __construct($appName, IRequest $request, StackService $stackService, BoardService $boardService) {
+	public function __construct(
+		$appName,
+		IRequest $request,
+		private StackService $stackService,
+		private BoardService $boardService,
+	) {
 		parent::__construct($appName, $request);
-		$this->stackService = $stackService;
-		$this->boardService = $boardService;
 	}
 
 	/**
diff --git a/lib/Controller/StackController.php b/lib/Controller/StackController.php
index c59bf9e1b..451242e5d 100644
--- a/lib/Controller/StackController.php
+++ b/lib/Controller/StackController.php
@@ -30,12 +30,13 @@ use OCP\AppFramework\Controller;
 use OCP\IRequest;
 
 class StackController extends Controller {
-	private $userId;
-	private $stackService;
-	public function __construct($appName, IRequest $request, StackService $stackService, $userId) {
+	public function __construct(
+		string $appName,
+		IRequest $request,
+		private StackService $stackService,
+		private $userId,
+	) {
 		parent::__construct($appName, $request);
-		$this->userId = $userId;
-		$this->stackService = $stackService;
 	}
 
 	/**