diff --git a/stubs/Drupal/Core/Field/FieldItemListInterface.stub b/stubs/Drupal/Core/Field/FieldItemListInterface.stub
index 473ae449..23dfb5a8 100644
--- a/stubs/Drupal/Core/Field/FieldItemListInterface.stub
+++ b/stubs/Drupal/Core/Field/FieldItemListInterface.stub
@@ -7,7 +7,7 @@ use Drupal\Core\TypedData\ListInterface;
 
 /**
  * @template T of FieldItemInterface
- * @extends ListInterface<T>
+ * @extends ListInterface<int, T>
  * @property mixed $value
  */
 interface FieldItemListInterface extends ListInterface {
diff --git a/stubs/Drupal/Core/TypedData/ListInterface.stub b/stubs/Drupal/Core/TypedData/ListInterface.stub
index c3859dc1..ef16da40 100644
--- a/stubs/Drupal/Core/TypedData/ListInterface.stub
+++ b/stubs/Drupal/Core/TypedData/ListInterface.stub
@@ -3,9 +3,10 @@
 namespace Drupal\Core\TypedData;
 
 /**
+ * @template TKey of int
  * @template T of TypedDataInterface
- * @extends TraversableTypedDataInterface<int, T>
- * @extends \ArrayAccess<int,T>
+ * @extends TraversableTypedDataInterface<TKey, T>
+ * @extends \ArrayAccess<TKey,T>
  */
 interface ListInterface extends TraversableTypedDataInterface, \ArrayAccess, \Countable {
 
diff --git a/stubs/Drupal/Core/TypedData/Plugin/DataType/ItemList.stub b/stubs/Drupal/Core/TypedData/Plugin/DataType/ItemList.stub
index a7834ff9..2ba9a9cc 100644
--- a/stubs/Drupal/Core/TypedData/Plugin/DataType/ItemList.stub
+++ b/stubs/Drupal/Core/TypedData/Plugin/DataType/ItemList.stub
@@ -10,7 +10,7 @@ use Drupal\Core\TypedData\TypedDataInterface;
 /**
  * @template T of TypedDataInterface
  * @implements \IteratorAggregate<int, T>
- * @implements ListInterface<T>
+ * @implements ListInterface<int, T>
  */
 class ItemList extends TypedData implements \IteratorAggregate, ListInterface {