diff --git a/conf/config.neon b/conf/config.neon
index 0d954bd6b1..1e8800e7a7 100644
--- a/conf/config.neon
+++ b/conf/config.neon
@@ -24,6 +24,7 @@ parameters:
 		disableRuntimeReflectionProvider: false
 		skipCheckGenericClasses:
 			- DatePeriod
+			- FilterIterator
 	fileExtensions:
 		- php
 	checkAdvancedIsset: false
diff --git a/stubs/iterable.stub b/stubs/iterable.stub
index 3401915391..903c433419 100644
--- a/stubs/iterable.stub
+++ b/stubs/iterable.stub
@@ -193,6 +193,18 @@ class IteratorIterator implements OuterIterator {
     public function __construct(Traversable $iterator) {}
 }
 
+/**
+ * @template-covariant TKey
+ * @template-covariant TValue
+ * @template TIterator as Traversable<TKey, TValue>
+ *
+ * @template-extends IteratorIterator<TKey, TValue, TIterator>
+ */
+class FilterIterator extends IteratorIterator
+{
+
+}
+
 /**
  * @template TKey of array-key
  * @template TValue