fix datetime

handlers/classes/Ticket.py

@@ -63,7 +63,7 @@ class Ticket(object):
 
     def update_status(self, new_status):
         self.status = new_status
-        self.updated_at = datetime.utcnow().isoformat()
+        self.updated_at = datetime.now().isoformat()
 
     def assign_to(self, user_id):
         self.assigned_to = user_id