diff --git a/src/File.php b/src/File.php
index 11e3be6..e93d9c1 100755
--- a/src/File.php
+++ b/src/File.php
@@ -42,7 +42,8 @@ public function __construct($id, $name, $hash = null, $size = null, $type = null
 
     /**
      * @return array
-     * */
+     */
+    #[\ReturnTypeWillChange]
     public function jsonSerialize()
     {
         return [