diff --git a/src/block/tile/TileFactory.php b/src/block/tile/TileFactory.php
index 8f1d100d7..20752f39c 100644
--- a/src/block/tile/TileFactory.php
+++ b/src/block/tile/TileFactory.php
@@ -34,9 +34,15 @@ use function reset;
 
 final class TileFactory{
 
-	/** @var string[] classes that extend Tile */
+	/**
+	 * @var string[] classes that extend Tile
+	 * @phpstan-var array<string, class-string<Tile>>
+	 */
 	private static $knownTiles = [];
-	/** @var string[][] */
+	/**
+	 * @var string[][]
+	 * @phpstan-var array<class-string<Tile>, list<string>>
+	 */
 	private static $saveNames = [];
 	/** @var string[] base class => overridden class */
 	private static $classMapping = [];
@@ -90,6 +96,7 @@ final class TileFactory{
 
 	/**
 	 * @param string[] $saveNames
+	 * @phpstan-param class-string<Tile> $className
 	 */
 	public static function register(string $className, array $saveNames = []) : void{
 		Utils::testValidInstance($className, Tile::class);
diff --git a/src/entity/EntityFactory.php b/src/entity/EntityFactory.php
index 35c4798b7..69fdbb328 100644
--- a/src/entity/EntityFactory.php
+++ b/src/entity/EntityFactory.php
@@ -114,6 +114,7 @@ final class EntityFactory{
 	 * @param string   $className Class that extends Entity
 	 * @param string[] $saveNames An array of save names which this entity might be saved under. Defaults to the short name of the class itself if empty.
 	 * @param int|null $legacyMcpeSaveId
+	 * @phpstan-param class-string<Entity> $className
 	 *
 	 * NOTE: The first save name in the $saveNames array will be used when saving the entity to disk. The reflection
 	 * name of the class will be appended to the end and only used if no other save names are specified.
diff --git a/src/plugin/PluginManager.php b/src/plugin/PluginManager.php
index 5fc24bb99..863172303 100644
--- a/src/plugin/PluginManager.php
+++ b/src/plugin/PluginManager.php
@@ -73,7 +73,10 @@ class PluginManager{
 	/** @var Plugin[] */
 	protected $enabledPlugins = [];
 
-	/** @var PluginLoader[] */
+	/**
+	 * @var PluginLoader[]
+	 * @phpstan-var array<class-string<PluginLoader>, PluginLoader>
+	 */
 	protected $fileAssociations = [];
 
 	/** @var string|null */
@@ -176,6 +179,7 @@ class PluginManager{
 
 	/**
 	 * @param string[]|null $newLoaders
+	 * @phpstan-param list<class-string<PluginLoader>> $newLoaders
 	 *
 	 * @return Plugin[]
 	 */
diff --git a/src/world/WorldManager.php b/src/world/WorldManager.php
index bdeedab46..a7ec2de1f 100644
--- a/src/world/WorldManager.php
+++ b/src/world/WorldManager.php
@@ -235,6 +235,7 @@ class WorldManager{
 	 * Generates a new world if it does not exist
 	 *
 	 * @param string   $generator Class name that extends pocketmine\world\generator\Generator
+	 * @phpstan-param class-string<Generator> $generator
 	 *
 	 * @throws \InvalidArgumentException
 	 */
diff --git a/src/world/format/io/WorldProviderManager.php b/src/world/format/io/WorldProviderManager.php
index f2346847a..a4f936031 100644
--- a/src/world/format/io/WorldProviderManager.php
+++ b/src/world/format/io/WorldProviderManager.php
@@ -68,6 +68,9 @@ abstract class WorldProviderManager{
 		self::$default = $class;
 	}
 
+	/**
+	 * @phpstan-param class-string<WorldProvider> $class
+	 */
 	public static function addProvider(string $class, string $name, bool $overwrite = false) : void{
 		Utils::testValidInstance($class, WorldProvider::class);
 
@@ -105,6 +108,8 @@ abstract class WorldProviderManager{
 
 	/**
 	 * Returns a WorldProvider by name, or null if not found
+	 *
+	 * @phpstan-return class-string<WorldProvider>|null
 	 */
 	public static function getProviderByName(string $name) : ?string{
 		return self::$providers[trim(strtolower($name))] ?? null;
diff --git a/src/world/generator/GeneratorManager.php b/src/world/generator/GeneratorManager.php
index 315595d39..b55640750 100644
--- a/src/world/generator/GeneratorManager.php
+++ b/src/world/generator/GeneratorManager.php
@@ -51,6 +51,7 @@ final class GeneratorManager{
 	 * @param string $class Fully qualified name of class that extends \pocketmine\world\generator\Generator
 	 * @param string $name Alias for this generator type that can be written in configs
 	 * @param bool   $overwrite Whether to force overwriting any existing registered generator with the same name
+	 * @phpstan-param class-string<Generator> $class
 	 *
 	 * @throws \InvalidArgumentException
 	 */
@@ -78,7 +79,9 @@ final class GeneratorManager{
 	 *
 	 * @param bool   $throwOnMissing @deprecated this is for backwards compatibility only
 	 *
-	 * @return string|Generator Name of class that extends Generator (not an actual Generator object)
+	 * @return string Name of class that extends Generator
+	 * @phpstan-return class-string<Generator>
+	 *
 	 * @throws \InvalidArgumentException if the generator type isn't registered
 	 */
 	public static function getGenerator(string $name, bool $throwOnMissing = false){
@@ -96,6 +99,7 @@ final class GeneratorManager{
 	 * Returns the registered name of the given Generator class.
 	 *
 	 * @param string $class Fully qualified name of class that extends \pocketmine\world\generator\Generator
+	 * @phpstan-param class-string<Generator> $class
 	 *
 	 * @throws \InvalidArgumentException if the class type cannot be matched to a known alias
 	 */