diff --git a/src/permission/BanEntry.php b/src/permission/BanEntry.php
index 47c8f6e03..d289cee87 100644
--- a/src/permission/BanEntry.php
+++ b/src/permission/BanEntry.php
@@ -36,16 +36,11 @@ class BanEntry{
 	/** @var string */
 	public static $format = "Y-m-d H:i:s O";
 
-	/** @var string */
-	private $name;
-	/** @var \DateTime */
-	private $creationDate;
-	/** @var string */
-	private $source = "(Unknown)";
-	/** @var \DateTime|null */
-	private $expirationDate = null;
-	/** @var string */
-	private $reason = "Banned by an operator.";
+	private string $name;
+	private \DateTime $creationDate;
+	private string $source = "(Unknown)";
+	private ?\DateTime $expirationDate = null;
+	private string $reason = "Banned by an operator.";
 
 	public function __construct(string $name){
 		$this->name = strtolower($name);
diff --git a/src/permission/BanList.php b/src/permission/BanList.php
index 714f1a4a3..87e971d84 100644
--- a/src/permission/BanList.php
+++ b/src/permission/BanList.php
@@ -32,19 +32,14 @@ use function strtolower;
 use function trim;
 
 class BanList{
-
 	/** @var BanEntry[] */
-	private $list = [];
+	private array $list = [];
 
-	/** @var string */
-	private $file;
+	private bool $enabled = true;
 
-	/** @var bool */
-	private $enabled = true;
-
-	public function __construct(string $file){
-		$this->file = $file;
-	}
+	public function __construct(
+		private string $file
+	){}
 
 	public function isEnabled() : bool{
 		return $this->enabled;
diff --git a/src/permission/PermissibleInternal.php b/src/permission/PermissibleInternal.php
index 23d0b3b0c..19d0b9b84 100644
--- a/src/permission/PermissibleInternal.php
+++ b/src/permission/PermissibleInternal.php
@@ -44,19 +44,19 @@ class PermissibleInternal implements Permissible{
 	 * @var bool[]
 	 * @phpstan-var array<string, bool>
 	 */
-	private $rootPermissions;
+	private array $rootPermissions;
 
 	/** @var PermissionAttachment[] */
-	private $attachments = [];
+	private array $attachments = [];
 
 	/** @var PermissionAttachmentInfo[] */
-	private $permissions = [];
+	private array $permissions = [];
 
 	/**
 	 * @var ObjectSet|\Closure[]
 	 * @phpstan-var ObjectSet<\Closure(array<string, bool> $changedPermissionsOldValues) : void>
 	 */
-	private $permissionRecalculationCallbacks;
+	private ObjectSet $permissionRecalculationCallbacks;
 
 	/**
 	 * @param bool[] $basePermissions
diff --git a/src/permission/Permission.php b/src/permission/Permission.php
index 126f9aba8..37e6910c8 100644
--- a/src/permission/Permission.php
+++ b/src/permission/Permission.php
@@ -31,17 +31,7 @@ namespace pocketmine\permission;
  * Represents a permission
  */
 class Permission{
-	/** @var string */
-	private $name;
-
-	/** @var string */
-	private $description;
-
-	/**
-	 * @var bool[]
-	 * @phpstan-var array<string, bool>
-	 */
-	private $children;
+	private string $description;
 
 	/**
 	 * Creates a new Permission object to be attached to Permissible objects
@@ -49,10 +39,12 @@ class Permission{
 	 * @param bool[] $children
 	 * @phpstan-param array<string, bool> $children
 	 */
-	public function __construct(string $name, ?string $description = null, array $children = []){
-		$this->name = $name;
-		$this->description = $description ?? "";
-		$this->children = $children;
+	public function __construct(
+		private string $name,
+		?string $description = null,
+		private array $children = []
+	){
+		$this->description = $description ?? ""; //TODO: wtf ????
 
 		$this->recalculatePermissibles();
 	}
diff --git a/src/permission/PermissionAttachment.php b/src/permission/PermissionAttachment.php
index 1af03baa9..0613250b8 100644
--- a/src/permission/PermissionAttachment.php
+++ b/src/permission/PermissionAttachment.php
@@ -29,26 +29,23 @@ use function spl_object_id;
 
 class PermissionAttachment{
 	/** @var bool[] */
-	private $permissions = [];
+	private array $permissions = [];
 
 	/**
 	 * @var PermissibleInternal[]
 	 * @phpstan-var array<int, PermissibleInternal>
 	 */
-	private $subscribers = [];
-
-	/** @var Plugin */
-	private $plugin;
+	private array $subscribers = [];
 
 	/**
 	 * @throws PluginException
 	 */
-	public function __construct(Plugin $plugin){
+	public function __construct(
+		private Plugin $plugin
+	){
 		if(!$plugin->isEnabled()){
 			throw new PluginException("Plugin " . $plugin->getDescription()->getName() . " is disabled");
 		}
-
-		$this->plugin = $plugin;
 	}
 
 	public function getPlugin() : Plugin{
diff --git a/src/permission/PermissionAttachmentInfo.php b/src/permission/PermissionAttachmentInfo.php
index b786d567e..fd45a4a40 100644
--- a/src/permission/PermissionAttachmentInfo.php
+++ b/src/permission/PermissionAttachmentInfo.php
@@ -24,24 +24,12 @@ declare(strict_types=1);
 namespace pocketmine\permission;
 
 class PermissionAttachmentInfo{
-	/** @var string */
-	private $permission;
-
-	/** @var PermissionAttachment|null */
-	private $attachment;
-
-	/** @var bool */
-	private $value;
-
-	/** @var PermissionAttachmentInfo|null */
-	private $groupPermission;
-
-	public function __construct(string $permission, ?PermissionAttachment $attachment, bool $value, ?PermissionAttachmentInfo $groupPermission){
-		$this->permission = $permission;
-		$this->attachment = $attachment;
-		$this->value = $value;
-		$this->groupPermission = $groupPermission;
-	}
+	public function __construct(
+		private string $permission,
+		private ?PermissionAttachment $attachment,
+		private bool $value,
+		private ?PermissionAttachmentInfo $groupPermission
+	){}
 
 	public function getPermission() : string{
 		return $this->permission;