diff --git a/src/User.php b/src/User.php
index 3772ab2..f93c1e1 100644
--- a/src/User.php
+++ b/src/User.php
@@ -6,8 +6,8 @@ class User
 {
     public function __construct(
         public string $id,
-        public string $firstName,
-        public string $lastName,
+        public ?string $firstName,
+        public ?string $lastName,
         public string $email,
         public ?string $avatar = null,
     ) {}