diff --git a/src/BusProNet/Model/Service.php b/src/BusProNet/Model/Service.php
index df51831..eddc638 100644
--- a/src/BusProNet/Model/Service.php
+++ b/src/BusProNet/Model/Service.php
@@ -66,4 +66,7 @@ class Service
 
     #[Groups(['api:single', 'api:list'])]
     public ?string $source = null;
+
+    #[Groups(['api:single', 'api:list'])]
+    public ?string $direction = null;
 }
\ No newline at end of file