diff --git a/src/event/AsyncEvent.php b/src/event/AsyncEvent.php
index 0d55f63bb71..137042e0572 100644
--- a/src/event/AsyncEvent.php
+++ b/src/event/AsyncEvent.php
@@ -76,6 +76,7 @@ final public function call() : Promise{
 
 	/**
 	 * @param AsyncRegisteredListener[] $handlers
+  	 * @phpstan-param list<AsyncRegisteredListener> $handlers
 	 * @phpstan-param \Closure() : void $resolve
 	 * @phpstan-param \Closure() : void $reject
 	 */