diff --git a/src/Annotations/AbstractAnnotation.php b/src/Annotations/AbstractAnnotation.php
index 22425ee1..822ede8a 100644
--- a/src/Annotations/AbstractAnnotation.php
+++ b/src/Annotations/AbstractAnnotation.php
@@ -284,6 +284,9 @@ public function __debugInfo()
         return $properties;
     }
 
+    /**
+     * @return mixed
+     */
     #[\ReturnTypeWillChange]
     public function jsonSerialize()
     {