diff --git a/phpstan.neon b/phpstan.neon
index cc1f8de..ef6cdd2 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -7,7 +7,6 @@ parameters:
     checkFunctionNameCase: true
     checkInternalClassCaseSensitivity: true
     treatPhpDocTypesAsCertain: false
-    checkGenericClassInNonGenericObjectType: false
 
     paths:
         - src
diff --git a/src/Filter/Chain.php b/src/Filter/Chain.php
index 9422d3a..c0060e6 100644
--- a/src/Filter/Chain.php
+++ b/src/Filter/Chain.php
@@ -8,6 +8,7 @@
 use OutOfBoundsException;
 use Traversable;
 
+/** @implements IteratorAggregate<int, Rule> */
 abstract class Chain implements Rule, MetaDataProvider, IteratorAggregate, Countable
 {
     use MetaData;
diff --git a/src/PriorityQueue.php b/src/PriorityQueue.php
index c3576e8..1992ec5 100644
--- a/src/PriorityQueue.php
+++ b/src/PriorityQueue.php
@@ -7,6 +7,10 @@
 
 /**
  * Stable priority queue that also maintains insertion order for items with the same priority
+ *
+ * @template TPriority
+ * @template TValue
+ * @extends SplPriorityQueue<array{TPriority, int}, TValue>
  */
 class PriorityQueue extends SplPriorityQueue
 {
@@ -14,9 +18,14 @@ class PriorityQueue extends SplPriorityQueue
     protected $serial = PHP_INT_MAX;
 
     /**
-     * @inheritDoc
+     * Inserts an element in the queue by sifting it up.
      *
      * Maintains insertion order for items with the same priority.
+     *
+     * @param TValue $value
+     * @param TPriority $priority
+     *
+     * @return bool
      */
     public function insert($value, $priority): bool
     {
@@ -36,7 +45,7 @@ public function yieldAll()
         $queue->setExtractFlags(static::EXTR_BOTH);
 
         foreach ($queue as $item) {
-            /** @var array{priority: array{0: mixed, 1: int}, data: mixed} $item */
+            /** @var array{priority: array{0: TPriority, 1: int}, data: TValue} $item */
             yield $item['priority'][0] => $item['data'];
         }
     }