diff --git a/src/Eloquent/Collection.php b/src/Eloquent/Collection.php
index bf3d524..0208b8a 100644
--- a/src/Eloquent/Collection.php
+++ b/src/Eloquent/Collection.php
@@ -57,7 +57,7 @@ public function toTree($childrenRelation = 'children')
      *
      * @return static<int, TModel>
      */
-    public function loadTreePathRelations()
+    public function loadTreePathRelations(): self
     {
         $instance = $this->first();