diff --git a/CarShowroom/CarShowroomDataModels/AbstractModels/ICar.cs b/CarShowroom/CarShowroomDataModels/AbstractModels/ICar.cs
index 1ff39fe..ff2ce4f 100644
--- a/CarShowroom/CarShowroomDataModels/AbstractModels/ICar.cs
+++ b/CarShowroom/CarShowroomDataModels/AbstractModels/ICar.cs
@@ -11,5 +11,6 @@ namespace CarShowroomContracts.AbstractModels
 	{
 		string Color { get; }
 		DateTime RealiseDate { get; }
+		int ModelId { get; }
 	}
 }
diff --git a/CarShowroom/CarShowroomDataModels/AbstractModels/IModel.cs b/CarShowroom/CarShowroomDataModels/AbstractModels/IModel.cs
index 5445b49..7999511 100644
--- a/CarShowroom/CarShowroomDataModels/AbstractModels/IModel.cs
+++ b/CarShowroom/CarShowroomDataModels/AbstractModels/IModel.cs
@@ -11,5 +11,6 @@ namespace CarShowroomContracts.AbstractModels
 	{
 		string Name { get; }
 		int Price { get; }
+		int MakeId { get; }
 	}
 }
diff --git a/CarShowroom/CarShowroomDataModels/AbstractModels/ISale.cs b/CarShowroom/CarShowroomDataModels/AbstractModels/ISale.cs
index f9c97a8..43fdd59 100644
--- a/CarShowroom/CarShowroomDataModels/AbstractModels/ISale.cs
+++ b/CarShowroom/CarShowroomDataModels/AbstractModels/ISale.cs
@@ -10,5 +10,7 @@ namespace CarShowroomContracts.AbstractModels
 	{
 		DateTime SaleTime { get; }
 		int Cost { get; }
+		int ClientId { get; }
+		int EmployeeId { get; }
 	}
 }
diff --git a/CarShowroom/CarShowroomDataModels/CarShowroomContracts.csproj b/CarShowroom/CarShowroomDataModels/CarShowroomContracts.csproj
index 132c02c..9b35c66 100644
--- a/CarShowroom/CarShowroomDataModels/CarShowroomContracts.csproj
+++ b/CarShowroom/CarShowroomDataModels/CarShowroomContracts.csproj
@@ -6,4 +6,8 @@
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
+  <ItemGroup>
+    <Folder Include="Dtos\" />
+  </ItemGroup>
+
 </Project>