diff --git a/src/ValueObject/Event.php b/src/ValueObject/Event.php
index 1d670f9..b1a9fa4 100644
--- a/src/ValueObject/Event.php
+++ b/src/ValueObject/Event.php
@@ -11,7 +11,7 @@ class Event
 
     private string $link;
 
-    public static function createFromArray(array $data)
+    public static function createFromArray(array $data): self
     {
         return new static($data);
     }