diff --git a/src/MemoryManager.php b/src/MemoryManager.php
index 657daca80b..09f0c889c7 100644
--- a/src/MemoryManager.php
+++ b/src/MemoryManager.php
@@ -68,53 +68,33 @@ use const SORT_NUMERIC;
 
 class MemoryManager{
 
-	/** @var Server */
-	private $server;
+	private Server $server;
 
-	/** @var int */
-	private $memoryLimit;
-	/** @var int */
-	private $globalMemoryLimit;
-	/** @var int */
-	private $checkRate;
-	/** @var int */
-	private $checkTicker = 0;
-	/** @var bool */
-	private $lowMemory = false;
+	private int $memoryLimit;
+	private int $globalMemoryLimit;
+	private int $checkRate;
+	private int $checkTicker = 0;
+	private bool $lowMemory = false;
 
-	/** @var bool */
-	private $continuousTrigger = true;
-	/** @var int */
-	private $continuousTriggerRate;
-	/** @var int */
-	private $continuousTriggerCount = 0;
-	/** @var int */
-	private $continuousTriggerTicker = 0;
+	private bool $continuousTrigger = true;
+	private int $continuousTriggerRate;
+	private int $continuousTriggerCount = 0;
+	private int $continuousTriggerTicker = 0;
 
-	/** @var int */
-	private $garbageCollectionPeriod;
-	/** @var int */
-	private $garbageCollectionTicker = 0;
-	/** @var bool */
-	private $garbageCollectionTrigger;
-	/** @var bool */
-	private $garbageCollectionAsync;
+	private int $garbageCollectionPeriod;
+	private int $garbageCollectionTicker = 0;
+	private bool $garbageCollectionTrigger;
+	private bool $garbageCollectionAsync;
 
-	/** @var int */
-	private $lowMemChunkRadiusOverride;
-	/** @var bool */
-	private $lowMemChunkGC;
+	private int $lowMemChunkRadiusOverride;
+	private bool $lowMemChunkGC;
 
-	/** @var bool */
-	private $lowMemDisableChunkCache;
-	/** @var bool */
-	private $lowMemClearWorldCache;
+	private bool $lowMemDisableChunkCache;
+	private bool $lowMemClearWorldCache;
 
-	/** @var bool */
-	private $dumpWorkers = true;
+	private bool $dumpWorkers = true;
 
-	/** @var \Logger */
-	private $logger;
+	private \Logger $logger;
 
 	public function __construct(Server $server){
 		$this->server = $server;