diff --git a/src/Index/DependenciesIndex.php b/src/Index/DependenciesIndex.php
index 4da48e3..059cb7d 100644
--- a/src/Index/DependenciesIndex.php
+++ b/src/Index/DependenciesIndex.php
@@ -15,7 +15,7 @@ class DependenciesIndex extends AbstractAggregateIndex
     /**
      * @return Index[]
      */
-    public function getIndexes(): array
+    protected function getIndexes(): array
     {
         return $this->indexes;
     }