diff --git a/Tests/Mango.Sandbox/Mango.Sandbox.EndPoints/DevAdminSignalRHubSandbox.cs b/Tests/Mango.Sandbox/Mango.Sandbox.EndPoints/DevAdminSignalRHubSandbox.cs
index 00adf64..86d39df 100644
--- a/Tests/Mango.Sandbox/Mango.Sandbox.EndPoints/DevAdminSignalRHubSandbox.cs
+++ b/Tests/Mango.Sandbox/Mango.Sandbox.EndPoints/DevAdminSignalRHubSandbox.cs
@@ -1,6 +1,7 @@
 using AyCode.Core.Enums;
 using AyCode.Core.Extensions;
 using AyCode.Core.Loggers;
+using AyCode.Core.Serializers.Binaries;
 using AyCode.Models.Server.DynamicMethods;
 using AyCode.Services.Server.SignalRs;
 using AyCode.Services.SignalRs;