diff --git a/src/Identity/IdentityInterface.php b/src/Identity/IdentityInterface.php
index d1dfa35..eaea76d 100644
--- a/src/Identity/IdentityInterface.php
+++ b/src/Identity/IdentityInterface.php
@@ -9,10 +9,7 @@
  */
 interface IdentityInterface
 {
-    /**
-     * @return mixed
-     */
-    public function getId(): int;
+    public function getId(): mixed;
 
     public function getName(): string;
 }