diff --git a/build/server-phar.php b/build/server-phar.php
index 4bedf6b23..9581a7568 100644
--- a/build/server-phar.php
+++ b/build/server-phar.php
@@ -45,6 +45,7 @@ function preg_quote_array(array $strings, string $delim = null) : array{
  * @param string   $stub
  * @param int      $signatureAlgo
  * @param int|null $compression
+ * @phpstan-param array<string, mixed> $metadata
  *
  * @return \Generator|string[]
  */
diff --git a/src/CrashDump.php b/src/CrashDump.php
index 28f57c7f2..05a9304b5 100644
--- a/src/CrashDump.php
+++ b/src/CrashDump.php
@@ -86,7 +86,10 @@ class CrashDump{
 	private $fp;
 	/** @var int */
 	private $time;
-	/** @var mixed[] */
+	/**
+	 * @var mixed[]
+	 * @phpstan-var array<string, mixed>
+	 */
 	private $data = [];
 	/** @var string */
 	private $encodedData = "";
@@ -129,6 +132,7 @@ class CrashDump{
 
 	/**
 	 * @return mixed[]
+	 * @phpstan-return array<string, mixed>
 	 */
 	public function getData() : array{
 		return $this->data;
diff --git a/src/Server.php b/src/Server.php
index 96085f3c7..f7a6c40ca 100644
--- a/src/Server.php
+++ b/src/Server.php
@@ -267,7 +267,10 @@ class Server{
 	/** @var string */
 	private $pluginPath;
 
-	/** @var string[] */
+	/**
+	 * @var string[]
+	 * @phpstan-var array<string, string>
+	 */
 	private $uniquePlayers = [];
 
 	/** @var QueryRegenerateEvent */
@@ -1417,6 +1420,7 @@ class Server{
 
 	/**
 	 * @param mixed[][]|null $trace
+	 * @phpstan-param list<array<string, mixed>>|null $trace
 	 */
 	public function exceptionHandler(\Throwable $e, $trace = null) : void{
 		while(@ob_end_flush()){}
diff --git a/src/block/BaseRail.php b/src/block/BaseRail.php
index 487a59cbd..ffc1cb8df 100644
--- a/src/block/BaseRail.php
+++ b/src/block/BaseRail.php
@@ -112,6 +112,7 @@ abstract class BaseRail extends Flowable{
 	/**
 	 * @param int[]   $connections
 	 * @param int[][] $lookup
+	 * @phpstan-param array<int, list<int>> $lookup
 	 */
 	protected static function searchState(array $connections, array $lookup) : int{
 		$meta = array_search($connections, $lookup, true);
@@ -180,6 +181,7 @@ abstract class BaseRail extends Flowable{
 	 * @param int[] $constraints
 	 *
 	 * @return true[]
+	 * @phpstan-return array<int, true>
 	 */
 	private function getPossibleConnectionDirections(array $constraints) : array{
 		switch(count($constraints)){
@@ -207,6 +209,7 @@ abstract class BaseRail extends Flowable{
 
 	/**
 	 * @return true[]
+	 * @phpstan-return array<int, true>
 	 */
 	protected function getPossibleConnectionDirectionsOneConstraint(int $constraint) : array{
 		$opposite = Facing::opposite($constraint & ~self::FLAG_ASCEND);
diff --git a/src/block/Leaves.php b/src/block/Leaves.php
index 638a78ebc..e24cc2393 100644
--- a/src/block/Leaves.php
+++ b/src/block/Leaves.php
@@ -69,6 +69,7 @@ class Leaves extends Transparent{
 
 	/**
 	 * @param true[] $visited reference parameter
+	 * @phpstan-param array<string, true> $visited
 	 */
 	protected function findLog(Vector3 $pos, array &$visited = [], int $distance = 0) : bool{
 		$index = World::blockHash($pos->x, $pos->y, $pos->z);
diff --git a/src/command/defaults/TimingsCommand.php b/src/command/defaults/TimingsCommand.php
index bd497ddba..e42b44b04 100644
--- a/src/command/defaults/TimingsCommand.php
+++ b/src/command/defaults/TimingsCommand.php
@@ -129,6 +129,7 @@ class TimingsCommand extends VanillaCommand{
 
 					/**
 					 * @param string[] $data
+					 * @phpstan-param array<string, string> $data
 					 */
 					public function __construct(CommandSender $sender, string $host, string $agent, array $data){
 						parent::__construct([
diff --git a/src/entity/Entity.php b/src/entity/Entity.php
index f3c8a7b0b..910dd5875 100644
--- a/src/entity/Entity.php
+++ b/src/entity/Entity.php
@@ -1636,6 +1636,7 @@ abstract class Entity{
 	/**
 	 * @param Player[]|Player    $player
 	 * @param MetadataProperty[] $data Properly formatted entity data, defaults to everything
+	 * @phpstan-param array<int, MetadataProperty> $data
 	 */
 	public function sendData($player, ?array $data = null) : void{
 		if(!is_array($player)){
diff --git a/src/entity/EntityFactory.php b/src/entity/EntityFactory.php
index a74d615d9..35c4798b7 100644
--- a/src/entity/EntityFactory.php
+++ b/src/entity/EntityFactory.php
@@ -65,9 +65,15 @@ final class EntityFactory{
 	private static $entityCount = 1;
 	/** @var string[] base class => currently used class for construction */
 	private static $classMapping = [];
-	/** @var string[] */
+	/**
+	 * @var string[]
+	 * @phpstan-var array<int|string, class-string<Entity>>
+	 */
 	private static $knownEntities = [];
-	/** @var string[][] */
+	/**
+	 * @var string[][]
+	 * @phpstan-var array<class-string<Entity>, list<string>>
+	 */
 	private static $saveNames = [];
 
 	private function __construct(){
diff --git a/src/entity/Living.php b/src/entity/Living.php
index c8f0f72fb..d1af67c6e 100644
--- a/src/entity/Living.php
+++ b/src/entity/Living.php
@@ -632,6 +632,7 @@ abstract class Living extends Entity{
 
 	/**
 	 * @param true[] $transparent
+	 * @phpstan-param array<int, true> $transparent
 	 *
 	 * @return Block[]
 	 */
@@ -674,6 +675,7 @@ abstract class Living extends Entity{
 
 	/**
 	 * @param true[] $transparent
+	 * @phpstan-param array<int, true> $transparent
 	 */
 	public function getTargetBlock(int $maxDistance, array $transparent = []) : ?Block{
 		$line = $this->getLineOfSight($maxDistance, 1, $transparent);
diff --git a/src/event/server/QueryRegenerateEvent.php b/src/event/server/QueryRegenerateEvent.php
index 8ead91669..3b6a19c2a 100644
--- a/src/event/server/QueryRegenerateEvent.php
+++ b/src/event/server/QueryRegenerateEvent.php
@@ -63,7 +63,10 @@ class QueryRegenerateEvent extends ServerEvent{
 	/** @var string */
 	private $ip;
 
-	/** @var string[] */
+	/**
+	 * @var string[]
+	 * @phpstan-var array<string, string>
+	 */
 	private $extraData = [];
 
 	/** @var string|null */
@@ -174,6 +177,7 @@ class QueryRegenerateEvent extends ServerEvent{
 	 * Returns the extra Query data in key => value form
 	 *
 	 * @return string[]
+	 * @phpstan-return array<string, string>
 	 */
 	public function getExtraData() : array{
 		return $this->extraData;
@@ -181,6 +185,7 @@ class QueryRegenerateEvent extends ServerEvent{
 
 	/**
 	 * @param string[] $extraData
+	 * @phpstan-param array<string, string> $extraData
 	 */
 	public function setExtraData(array $extraData) : void{
 		$this->extraData = $extraData;
diff --git a/src/item/Item.php b/src/item/Item.php
index e9384f373..e4d678b38 100644
--- a/src/item/Item.php
+++ b/src/item/Item.php
@@ -575,6 +575,7 @@ class Item implements \JsonSerializable{
 	 * Returns an array of item stack properties that can be serialized to json.
 	 *
 	 * @return mixed[]
+	 * @phpstan-return array{id: int, damage?: int, count?: int, nbt_b64?: string}
 	 */
 	final public function jsonSerialize() : array{
 		$data = [
@@ -599,6 +600,14 @@ class Item implements \JsonSerializable{
 	/**
 	 * Returns an Item from properties created in an array by {@link Item#jsonSerialize}
 	 * @param mixed[] $data
+	 * @phpstan-param array{
+	 * 	id: int,
+	 * 	damage?: int,
+	 * 	count?: int,
+	 * 	nbt?: string,
+	 * 	nbt_hex?: string,
+	 * 	nbt_b64?: string
+	 * } $data
 	 *
 	 * @throws NbtDataException
 	 * @throws \InvalidArgumentException
diff --git a/src/lang/Language.php b/src/lang/Language.php
index 2acce0c35..4e2ebabe7 100644
--- a/src/lang/Language.php
+++ b/src/lang/Language.php
@@ -45,6 +45,7 @@ class Language{
 
 	/**
 	 * @return string[]
+	 * @phpstan-return array<string, string>
 	 *
 	 * @throws LanguageNotFoundException
 	 */
diff --git a/src/network/mcpe/protocol/AddActorPacket.php b/src/network/mcpe/protocol/AddActorPacket.php
index ecc4f09c0..30f827f73 100644
--- a/src/network/mcpe/protocol/AddActorPacket.php
+++ b/src/network/mcpe/protocol/AddActorPacket.php
@@ -165,7 +165,10 @@ class AddActorPacket extends DataPacket implements ClientboundPacket{
 
 	/** @var Attribute[] */
 	public $attributes = [];
-	/** @var MetadataProperty[] */
+	/**
+	 * @var MetadataProperty[]
+	 * @phpstan-var array<int, MetadataProperty>
+	 */
 	public $metadata = [];
 	/** @var EntityLink[] */
 	public $links = [];
diff --git a/src/network/mcpe/protocol/AddItemActorPacket.php b/src/network/mcpe/protocol/AddItemActorPacket.php
index ded9268cb..0a4efa9ab 100644
--- a/src/network/mcpe/protocol/AddItemActorPacket.php
+++ b/src/network/mcpe/protocol/AddItemActorPacket.php
@@ -43,7 +43,10 @@ class AddItemActorPacket extends DataPacket implements ClientboundPacket{
 	public $position;
 	/** @var Vector3|null */
 	public $motion;
-	/** @var MetadataProperty[] */
+	/**
+	 * @var MetadataProperty[]
+	 * @phpstan-var array<int, MetadataProperty>
+	 */
 	public $metadata = [];
 	/** @var bool */
 	public $isFromFishing = false;
diff --git a/src/network/mcpe/protocol/AddPlayerPacket.php b/src/network/mcpe/protocol/AddPlayerPacket.php
index df80e2422..b0d281834 100644
--- a/src/network/mcpe/protocol/AddPlayerPacket.php
+++ b/src/network/mcpe/protocol/AddPlayerPacket.php
@@ -58,7 +58,10 @@ class AddPlayerPacket extends DataPacket implements ClientboundPacket{
 	public $headYaw = null; //TODO
 	/** @var Item */
 	public $item;
-	/** @var MetadataProperty[] */
+	/**
+	 * @var MetadataProperty[]
+	 * @phpstan-var array<int, MetadataProperty>
+	 */
 	public $metadata = [];
 
 	//TODO: adventure settings stuff
diff --git a/src/network/mcpe/protocol/AvailableCommandsPacket.php b/src/network/mcpe/protocol/AvailableCommandsPacket.php
index fcc53843f..f652b2303 100644
--- a/src/network/mcpe/protocol/AvailableCommandsPacket.php
+++ b/src/network/mcpe/protocol/AvailableCommandsPacket.php
@@ -371,6 +371,7 @@ class AvailableCommandsPacket extends DataPacket implements ClientboundPacket{
 
 	/**
 	 * @param string[] $postfixes
+	 * @phpstan-param array<int, string> $postfixes
 	 */
 	private function argTypeToString(int $argtype, array $postfixes) : string{
 		if($argtype & self::ARG_FLAG_VALID){
diff --git a/src/network/mcpe/protocol/GameRulesChangedPacket.php b/src/network/mcpe/protocol/GameRulesChangedPacket.php
index 198634fe4..76895424d 100644
--- a/src/network/mcpe/protocol/GameRulesChangedPacket.php
+++ b/src/network/mcpe/protocol/GameRulesChangedPacket.php
@@ -30,7 +30,10 @@ use pocketmine\network\mcpe\handler\PacketHandler;
 class GameRulesChangedPacket extends DataPacket implements ClientboundPacket{
 	public const NETWORK_ID = ProtocolInfo::GAME_RULES_CHANGED_PACKET;
 
-	/** @var mixed[][] */
+	/**
+	 * @var mixed[][]
+	 * @phpstan-var array<string, array{0: int, 1: bool|int|float}>
+	 */
 	public $gameRules = [];
 
 	protected function decodePayload() : void{
diff --git a/src/network/mcpe/protocol/LoginPacket.php b/src/network/mcpe/protocol/LoginPacket.php
index 51c37bc3f..8eca676e8 100644
--- a/src/network/mcpe/protocol/LoginPacket.php
+++ b/src/network/mcpe/protocol/LoginPacket.php
@@ -87,7 +87,10 @@ class LoginPacket extends DataPacket implements ServerboundPacket{
 	public $extraData = null;
 	/** @var string */
 	public $clientDataJwt;
-	/** @var mixed[] decoded payload of the clientData JWT */
+	/**
+	 * @var mixed[] decoded payload of the clientData JWT
+	 * @phpstan-var array<string, mixed>
+	 */
 	public $clientData = [];
 
 	/**
diff --git a/src/network/mcpe/protocol/SetActorDataPacket.php b/src/network/mcpe/protocol/SetActorDataPacket.php
index b25bb91d5..c030b2154 100644
--- a/src/network/mcpe/protocol/SetActorDataPacket.php
+++ b/src/network/mcpe/protocol/SetActorDataPacket.php
@@ -33,7 +33,10 @@ class SetActorDataPacket extends DataPacket implements ClientboundPacket, Server
 
 	/** @var int */
 	public $entityRuntimeId;
-	/** @var MetadataProperty[] */
+	/**
+	 * @var MetadataProperty[]
+	 * @phpstan-var array<int, MetadataProperty>
+	 */
 	public $metadata;
 
 	public static function create(int $entityRuntimeId, array $metadata) : self{
diff --git a/src/network/mcpe/protocol/StartGamePacket.php b/src/network/mcpe/protocol/StartGamePacket.php
index 2b5f36926..90c4fed2c 100644
--- a/src/network/mcpe/protocol/StartGamePacket.php
+++ b/src/network/mcpe/protocol/StartGamePacket.php
@@ -103,7 +103,10 @@ class StartGamePacket extends DataPacket implements ClientboundPacket{
 	public $commandsEnabled;
 	/** @var bool */
 	public $isTexturePacksRequired = true;
-	/** @var mixed[][] */
+	/**
+	 * @var mixed[][]
+	 * @phpstan-var array<string, array{0: int, 1: bool|int|float}>
+	 */
 	public $gameRules = [ //TODO: implement this
 		"naturalregeneration" => [1, false] //Hack for client side regeneration
 	];
@@ -153,7 +156,10 @@ class StartGamePacket extends DataPacket implements ClientboundPacket{
 
 	/** @var ListTag|null */
 	public $blockTable = null;
-	/** @var int[]|null string (name) => int16 (legacyID) */
+	/**
+	 * @var int[]|null string (name) => int16 (legacyID)
+	 * @phpstan-var array<string, int>|null
+	 */
 	public $itemTable = null;
 
 	protected function decodePayload() : void{
@@ -302,6 +308,7 @@ class StartGamePacket extends DataPacket implements ClientboundPacket{
 
 	/**
 	 * @param int[] $table
+	 * @phpstan-param array<string, int> $table
 	 */
 	private static function serializeItemTable(array $table) : string{
 		$stream = new NetworkBinaryStream();
diff --git a/src/network/mcpe/protocol/types/entity/EntityMetadataCollection.php b/src/network/mcpe/protocol/types/entity/EntityMetadataCollection.php
index c096143a9..5d66c4163 100644
--- a/src/network/mcpe/protocol/types/entity/EntityMetadataCollection.php
+++ b/src/network/mcpe/protocol/types/entity/EntityMetadataCollection.php
@@ -29,9 +29,15 @@ use function get_class;
 
 class EntityMetadataCollection{
 
-	/** @var MetadataProperty[] */
+	/**
+	 * @var MetadataProperty[]
+	 * @phpstan-var array<int, MetadataProperty>
+	 */
 	private $properties = [];
-	/** @var MetadataProperty[] */
+	/**
+	 * @var MetadataProperty[]
+	 * @phpstan-var array<int, MetadataProperty>
+	 */
 	private $dirtyProperties = [];
 
 	public function __construct(){
@@ -121,6 +127,7 @@ class EntityMetadataCollection{
 	 * Returns all properties.
 	 *
 	 * @return MetadataProperty[]
+	 * @phpstan-return array<int, MetadataProperty>
 	 */
 	public function getAll() : array{
 		return $this->properties;
@@ -130,6 +137,7 @@ class EntityMetadataCollection{
 	 * Returns properties that have changed and need to be broadcasted.
 	 *
 	 * @return MetadataProperty[]
+	 * @phpstan-return array<int, MetadataProperty>
 	 */
 	public function getDirty() : array{
 		return $this->dirtyProperties;
diff --git a/src/network/mcpe/serializer/NetworkBinaryStream.php b/src/network/mcpe/serializer/NetworkBinaryStream.php
index 1b3c591d8..35cf694a5 100644
--- a/src/network/mcpe/serializer/NetworkBinaryStream.php
+++ b/src/network/mcpe/serializer/NetworkBinaryStream.php
@@ -297,6 +297,7 @@ class NetworkBinaryStream extends BinaryStream{
 	 * Decodes entity metadata from the stream.
 	 *
 	 * @return MetadataProperty[]
+	 * @phpstan-return array<int, MetadataProperty>
 	 *
 	 * @throws BadPacketException
 	 * @throws BinaryDataException
@@ -334,6 +335,7 @@ class NetworkBinaryStream extends BinaryStream{
 	 * Writes entity metadata to the packet buffer.
 	 *
 	 * @param MetadataProperty[] $metadata
+	 * @phpstan-param array<int, MetadataProperty> $metadata
 	 */
 	public function putEntityMetadata(array $metadata) : void{
 		$this->putUnsignedVarInt(count($metadata));
@@ -530,6 +532,7 @@ class NetworkBinaryStream extends BinaryStream{
 	 * TODO: implement this properly
 	 *
 	 * @return mixed[][], members are in the structure [name => [type, value]]
+	 * @phpstan-return array<string, array{0: int, 1: bool|int|float}>
 	 *
 	 * @throws BadPacketException
 	 * @throws BinaryDataException
@@ -566,6 +569,7 @@ class NetworkBinaryStream extends BinaryStream{
 	 * TODO: implement this properly
 	 *
 	 * @param mixed[][] $rules
+	 * @phpstan-param array<string, array{0: int, 1: bool|int|float}> $rules
 	 */
 	public function putGameRules(array $rules) : void{
 		$this->putUnsignedVarInt(count($rules));
diff --git a/src/permission/Permission.php b/src/permission/Permission.php
index f617e3e5d..9361dea24 100644
--- a/src/permission/Permission.php
+++ b/src/permission/Permission.php
@@ -45,7 +45,10 @@ class Permission{
 	/** @var string */
 	private $description;
 
-	/** @var bool[] */
+	/**
+	 * @var bool[]
+	 * @phpstan-var array<string, bool>
+	 */
 	private $children;
 
 	/** @var string */
@@ -55,6 +58,7 @@ class Permission{
 	 * Creates a new Permission object to be attached to Permissible objects
 	 *
 	 * @param bool[] $children
+	 * @phpstan-param array<string, bool> $children
 	 */
 	public function __construct(string $name, ?string $description = null, ?string $defaultValue = null, array $children = []){
 		$this->name = $name;
@@ -71,6 +75,7 @@ class Permission{
 
 	/**
 	 * @return bool[]
+	 * @phpstan-return array<string, bool>
 	 */
 	public function &getChildren() : array{
 		return $this->children;
diff --git a/src/permission/PermissionParser.php b/src/permission/PermissionParser.php
index 3cd1cbf38..c0abfb1c9 100644
--- a/src/permission/PermissionParser.php
+++ b/src/permission/PermissionParser.php
@@ -71,6 +71,7 @@ class PermissionParser{
 
 	/**
 	 * @param mixed[][] $data
+	 * @phpstan-param array<string, array<string, mixed>> $data
 	 *
 	 * @return Permission[]
 	 */
@@ -86,6 +87,7 @@ class PermissionParser{
 	/**
 	 * @param mixed[]      $data
 	 * @param Permission[] $output reference parameter
+	 * @phpstan-param array<string, mixed> $data
 	 *
 	 * @throws \Exception
 	 */
diff --git a/src/plugin/PluginDescription.php b/src/plugin/PluginDescription.php
index 31dd2546d..2a9a53414 100644
--- a/src/plugin/PluginDescription.php
+++ b/src/plugin/PluginDescription.php
@@ -39,7 +39,10 @@ use function version_compare;
 use function yaml_parse;
 
 class PluginDescription{
-	/** @var mixed[] */
+	/**
+	 * @var mixed[]
+	 * @phpstan-var array<string, mixed>
+	 */
 	private $map;
 
 	/** @var string */
@@ -50,7 +53,10 @@ class PluginDescription{
 	private $api;
 	/** @var int[] */
 	private $compatibleMcpeProtocols = [];
-	/** @var string[][] */
+	/**
+	 * @var string[][]
+	 * @phpstan-var array<string, list<mixed>>
+	 */
 	private $extensions = [];
 	/** @var string[] */
 	private $depend = [];
@@ -60,7 +66,10 @@ class PluginDescription{
 	private $loadBefore = [];
 	/** @var string */
 	private $version;
-	/** @var mixed[][] */
+	/**
+	 * @var mixed[][]
+	 * @phpstan-var array<string, array<string, mixed>>
+	 */
 	private $commands = [];
 	/** @var string */
 	private $description = "";
@@ -78,6 +87,7 @@ class PluginDescription{
 
 	/**
 	 * @param string|mixed[] $yamlString
+	 * @phpstan-param string|array<string, mixed> $yamlString
 	 */
 	public function __construct($yamlString){
 		$this->loadMap(!is_array($yamlString) ? yaml_parse($yamlString) : $yamlString);
@@ -85,6 +95,7 @@ class PluginDescription{
 
 	/**
 	 * @param mixed[] $plugin
+	 * @phpstan-param array<string, mixed> $plugin
 	 * @throws PluginException
 	 */
 	private function loadMap(array $plugin) : void{
@@ -189,6 +200,7 @@ class PluginDescription{
 
 	/**
 	 * @return mixed[][]
+	 * @phpstan-return array<string, array<string, mixed>>
 	 */
 	public function getCommands() : array{
 		return $this->commands;
@@ -196,6 +208,7 @@ class PluginDescription{
 
 	/**
 	 * @return string[][]
+	 * @phpstan-return array<string, list<string>>
 	 */
 	public function getRequiredExtensions() : array{
 		return $this->extensions;
@@ -289,6 +302,7 @@ class PluginDescription{
 
 	/**
 	 * @return mixed[]
+	 * @phpstan-return array<string, mixed>
 	 */
 	public function getMap() : array{
 		return $this->map;
diff --git a/src/scheduler/BulkCurlTask.php b/src/scheduler/BulkCurlTask.php
index eaa95ee64..5dd534ebd 100644
--- a/src/scheduler/BulkCurlTask.php
+++ b/src/scheduler/BulkCurlTask.php
@@ -45,12 +45,14 @@ class BulkCurlTask extends AsyncTask{
 	 * {@link Utils::simpleCurl}.
 	 *
 	 * @param mixed[][]  $operations
+	 * @phpstan-param list<array{page: string, timeout?: float, extraHeaders?: list<string>, extraOpts?: array<int, mixed>}> $operations
 	 */
 	public function __construct(array $operations){
 		$this->operations = serialize($operations);
 	}
 
 	public function onRun() : void{
+		/** @phpstan-var list<array{page: string, timeout?: float, extraHeaders?: list<string>, extraOpts?: array<int, mixed>}> $operations */
 		$operations = unserialize($this->operations);
 		$results = [];
 		foreach($operations as $op){
diff --git a/src/scheduler/SendUsageTask.php b/src/scheduler/SendUsageTask.php
index 0584b1c6e..d943efb6c 100644
--- a/src/scheduler/SendUsageTask.php
+++ b/src/scheduler/SendUsageTask.php
@@ -54,6 +54,7 @@ class SendUsageTask extends AsyncTask{
 
 	/**
 	 * @param string[] $playerList
+	 * @phpstan-param array<string, string> $playerList
 	 */
 	public function __construct(Server $server, int $type, array $playerList = []){
 		$endpoint = "http://" . $server->getProperty("anonymous-statistics.host", "stats.pocketmine.net") . "/";
diff --git a/src/updater/AutoUpdater.php b/src/updater/AutoUpdater.php
index 39b3ff1f9..95803c243 100644
--- a/src/updater/AutoUpdater.php
+++ b/src/updater/AutoUpdater.php
@@ -41,7 +41,10 @@ class AutoUpdater{
 	protected $server;
 	/** @var string */
 	protected $endpoint;
-	/** @var mixed[]|null */
+	/**
+	 * @var mixed[]|null
+	 * @phpstan-var array<string, mixed>|null
+	 */
 	protected $updateInfo = null;
 	/** @var VersionString|null */
 	protected $newVersion;
@@ -67,6 +70,7 @@ class AutoUpdater{
 	 * Callback used at the end of the update checking task
 	 *
 	 * @param mixed[] $updateInfo
+	 * @phpstan-param array<string, mixed> $updateInfo
 	 */
 	public function checkUpdateCallback(array $updateInfo) : void{
 		$this->updateInfo = $updateInfo;
@@ -145,6 +149,7 @@ class AutoUpdater{
 	 * Returns the last retrieved update data.
 	 *
 	 * @return mixed[]|null
+	 * @phpstan-return array<string, mixed>|null
 	 */
 	public function getUpdateInfo() : ?array{
 		return $this->updateInfo;
diff --git a/src/utils/Config.php b/src/utils/Config.php
index dd9298b8d..95d38c270 100644
--- a/src/utils/Config.php
+++ b/src/utils/Config.php
@@ -68,10 +68,16 @@ class Config{
 	public const ENUM = 5; // .txt, .list, .enum
 	public const ENUMERATION = Config::ENUM;
 
-	/** @var mixed[] */
+	/**
+	 * @var mixed[]
+	 * @phpstan-var array<string, mixed>
+	 */
 	private $config = [];
 
-	/** @var mixed[] */
+	/**
+	 * @var mixed[]
+	 * @phpstan-var array<string, mixed>
+	 */
 	private $nestedCache = [];
 
 	/** @var string */
@@ -107,6 +113,7 @@ class Config{
 	 * @param string  $file Path of the file to be loaded
 	 * @param int     $type Config type to load, -1 by default (detect)
 	 * @param mixed[] $default Array with the default values that will be written to the file if it did not exist
+	 * @phpstan-param array<string, mixed> $default
 	 */
 	public function __construct(string $file, int $type = Config::DETECT, array $default = []){
 		$this->load($file, $type, $default);
@@ -135,6 +142,7 @@ class Config{
 
 	/**
 	 * @param mixed[] $default
+	 * @phpstan-param array<string, mixed> $default
 	 *
 	 * @throws \InvalidArgumentException if config type could not be auto-detected
 	 * @throws \InvalidStateException if config type is invalid
@@ -428,6 +436,7 @@ class Config{
 
 	/**
 	 * @param mixed[] $v
+	 * @phpstan-param array<string, mixed> $v
 	 */
 	public function setAll(array $v) : void{
 		$this->config = $v;
@@ -458,6 +467,7 @@ class Config{
 
 	/**
 	 * @return mixed[]
+	 * @phpstan-return list<string>|array<string, mixed>
 	 */
 	public function getAll(bool $keys = false) : array{
 		return ($keys ? array_keys($this->config) : $this->config);
@@ -465,6 +475,7 @@ class Config{
 
 	/**
 	 * @param mixed[] $defaults
+	 * @phpstan-param array<string, mixed> $defaults
 	 */
 	public function setDefaults(array $defaults) : void{
 		$this->fillDefaults($defaults, $this->config);
@@ -473,6 +484,8 @@ class Config{
 	/**
 	 * @param mixed[] $default
 	 * @param mixed[] $data reference parameter
+	 * @phpstan-param array<string, mixed> $default
+	 * @phpstan-param array<string, mixed> $data
 	 */
 	private function fillDefaults(array $default, &$data) : int{
 		$changed = 0;
diff --git a/src/utils/MainLogger.php b/src/utils/MainLogger.php
index d61465607..353bd7acb 100644
--- a/src/utils/MainLogger.php
+++ b/src/utils/MainLogger.php
@@ -140,6 +140,7 @@ class MainLogger extends \AttachableThreadedLogger{
 
 	/**
 	 * @param mixed[][]|null $trace
+	 * @phpstan-param list<array<string, mixed>>|null $trace
 	 *
 	 * @return void
 	 */
diff --git a/src/utils/Utils.php b/src/utils/Utils.php
index 64d270467..2a0a83a05 100644
--- a/src/utils/Utils.php
+++ b/src/utils/Utils.php
@@ -354,6 +354,7 @@ class Utils{
 
 	/**
 	 * @return mixed[] array of claims
+	 * @phpstan-return array<string, mixed>
 	 *
 	 * @throws \UnexpectedValueException
 	 */
@@ -392,6 +393,7 @@ class Utils{
 
 	/**
 	 * @param mixed[][] $trace
+	 * @phpstan-param list<array<string, mixed>> $trace
 	 *
 	 * @return string[]
 	 */
@@ -426,6 +428,7 @@ class Utils{
 
 	/**
 	 * @return mixed[][]
+	 * @phpstan-return list<array<string, mixed>>
 	 */
 	public static function currentTrace(int $skipFrames = 0) : array{
 		++$skipFrames; //omit this frame from trace, in addition to other skipped frames
diff --git a/src/world/format/io/WorldProviderManager.php b/src/world/format/io/WorldProviderManager.php
index 1c8d0cea8..f2346847a 100644
--- a/src/world/format/io/WorldProviderManager.php
+++ b/src/world/format/io/WorldProviderManager.php
@@ -32,7 +32,10 @@ use function strtolower;
 use function trim;
 
 abstract class WorldProviderManager{
-	/** @var string[] */
+	/**
+	 * @var string[]
+	 * @phpstan-var array<string, class-string<WorldProvider>>
+	 */
 	protected static $providers = [];
 
 	/** @var string|WorldProvider */
diff --git a/src/world/format/io/WritableWorldProvider.php b/src/world/format/io/WritableWorldProvider.php
index 95a11f704..cd6573ba9 100644
--- a/src/world/format/io/WritableWorldProvider.php
+++ b/src/world/format/io/WritableWorldProvider.php
@@ -30,6 +30,7 @@ interface WritableWorldProvider extends WorldProvider{
 	 * Generate the needed files in the path given
 	 *
 	 * @param mixed[] $options
+	 * @phpstan-param array<string, mixed> $options
 	 */
 	public static function generate(string $path, string $name, int $seed, string $generator, array $options = []) : void;
 
diff --git a/src/world/generator/Flat.php b/src/world/generator/Flat.php
index 01d6d6e58..e3c31a42c 100644
--- a/src/world/generator/Flat.php
+++ b/src/world/generator/Flat.php
@@ -41,7 +41,10 @@ class Flat extends Generator{
 	private $chunk;
 	/** @var Populator[] */
 	private $populators = [];
-	/** @var int[] */
+	/**
+	 * @var int[]
+	 * @phpstan-var array<int, int>
+	 */
 	private $structure;
 	/** @var int */
 	private $floorLevel;
@@ -52,6 +55,7 @@ class Flat extends Generator{
 
 	/**
 	 * @param mixed[] $options
+	 * @phpstan-param array<string, mixed> $options
 	 *
 	 * @throws InvalidGeneratorOptionsException
 	 */
@@ -87,6 +91,8 @@ class Flat extends Generator{
 
 	/**
 	 * @return int[]
+	 * @phpstan-return array<int, int>
+	 *
 	 * @throws InvalidGeneratorOptionsException
 	 */
 	public static function parseLayers(string $layers) : array{
diff --git a/src/world/generator/Generator.php b/src/world/generator/Generator.php
index 23906d24b..f57e431eb 100644
--- a/src/world/generator/Generator.php
+++ b/src/world/generator/Generator.php
@@ -62,6 +62,7 @@ abstract class Generator{
 	 * @throws InvalidGeneratorOptionsException
 	 *
 	 * @param mixed[] $options
+	 * @phpstan-param array<string, mixed> $options
 	 */
 	public function __construct(ChunkManager $world, int $seed, array $options = []){
 		$this->world = $world;
diff --git a/src/world/generator/GeneratorManager.php b/src/world/generator/GeneratorManager.php
index 45d8f2083..315595d39 100644
--- a/src/world/generator/GeneratorManager.php
+++ b/src/world/generator/GeneratorManager.php
@@ -30,7 +30,10 @@ use function array_keys;
 use function strtolower;
 
 final class GeneratorManager{
-	/** @var string[] name => classname mapping */
+	/**
+	 * @var string[] name => classname mapping
+	 * @phpstan-var array<string, class-string<Generator>>
+	 */
 	private static $list = [];
 
 	/**
diff --git a/src/world/generator/GeneratorRegisterTask.php b/src/world/generator/GeneratorRegisterTask.php
index d6d7f7e5b..5b31a31f8 100644
--- a/src/world/generator/GeneratorRegisterTask.php
+++ b/src/world/generator/GeneratorRegisterTask.php
@@ -45,6 +45,7 @@ class GeneratorRegisterTask extends AsyncTask{
 
 	/**
 	 * @param mixed[] $generatorSettings
+	 * @phpstan-param array<string, mixed> $generatorSettings
 	 */
 	public function __construct(World $world, string $generatorClass, array $generatorSettings = []){
 		$this->generatorClass = $generatorClass;
diff --git a/src/world/generator/hell/Nether.php b/src/world/generator/hell/Nether.php
index 1b9c645ec..261483f39 100644
--- a/src/world/generator/hell/Nether.php
+++ b/src/world/generator/hell/Nether.php
@@ -52,6 +52,7 @@ class Nether extends Generator{
 
 	/**
 	 * @param mixed[] $options
+	 * @phpstan-param array<string, mixed> $options
 	 *
 	 * @throws InvalidGeneratorOptionsException
 	 */
diff --git a/src/world/generator/normal/Normal.php b/src/world/generator/normal/Normal.php
index 9cfc25538..d7e6a9e14 100644
--- a/src/world/generator/normal/Normal.php
+++ b/src/world/generator/normal/Normal.php
@@ -59,6 +59,7 @@ class Normal extends Generator{
 
 	/**
 	 * @param mixed[] $options
+	 * @phpstan-param array<string, mixed> $options
 	 *
 	 * @throws InvalidGeneratorOptionsException
 	 */