diff --git a/src/Node/Directory.php b/src/Node/Directory.php
index 8b753cc1..2802f93a 100644
--- a/src/Node/Directory.php
+++ b/src/Node/Directory.php
@@ -86,6 +86,9 @@ public function count(): int
         return $this->numFiles;
     }
 
+    /**
+     * @return RecursiveIteratorIterator<Iterator<AbstractNode>>
+     */
     public function getIterator(): RecursiveIteratorIterator
     {
         return new RecursiveIteratorIterator(