diff --git a/ServiceHost/Program.cs b/ServiceHost/Program.cs
index bf46f1d7..7e3431e0 100644
--- a/ServiceHost/Program.cs
+++ b/ServiceHost/Program.cs
@@ -356,6 +356,7 @@ else
 app.UseExceptionHandler(options => { }); // این خط CustomExceptionHandler رو فعال می‌کنه
 
 app.UseRouting();
+app.UseWebSockets();
 
 app.UseAuthentication();
 app.UseAuthorization();