diff --git a/Implab.ServiceHost/src/Unity/RegisterElement.cs b/Implab.ServiceHost/src/Unity/RegisterElement.cs
--- a/Implab.ServiceHost/src/Unity/RegisterElement.cs
+++ b/Implab.ServiceHost/src/Unity/RegisterElement.cs
@@ -1,8 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Xml.Serialization;
-using Unity.Lifetime;
-using Unity.Registration;
+
 
 namespace Implab.ServiceHost.Unity {