diff --git a/src/PublicApi/Startup.cs b/src/PublicApi/Startup.cs
index b28473e..f0d0a20 100644
--- a/src/PublicApi/Startup.cs
+++ b/src/PublicApi/Startup.cs
@@ -1,3 +1,4 @@
+using System;
 using System.Collections.Generic;
 using System.Text;
 using AutoMapper;