diff --git a/SecuritySystem/SecuritySystemBusinessLogic/BusinessLogics/OrderLogic.cs b/SecuritySystem/SecuritySystemBusinessLogic/BusinessLogics/OrderLogic.cs
index 44b56f0..43bd209 100644
--- a/SecuritySystem/SecuritySystemBusinessLogic/BusinessLogics/OrderLogic.cs
+++ b/SecuritySystem/SecuritySystemBusinessLogic/BusinessLogics/OrderLogic.cs
@@ -12,6 +12,7 @@ namespace SecuritySystemBusinessLogic.BusinessLogics
     {
         private readonly ILogger _logger;
         private readonly IOrderStorage _orderStorage;
+        static readonly object locker = new object();
 
         public OrderLogic(ILogger<OrderLogic> logger, IOrderStorage orderStorage)
         {
@@ -74,7 +75,10 @@ namespace SecuritySystemBusinessLogic.BusinessLogics
 
         public bool TakeOrderInWork(OrderBindingModel model)
         {
-            return ChangeStatus(model, OrderStatus.Выполняется);
+            lock (locker)
+            {
+                return ChangeStatus(model, OrderStatus.Выполняется);
+            }
         }
 
         public bool FinishOrder(OrderBindingModel model)