diff --git a/src/Microsoft.AspNet.Mvc.Core/Authorization/AuthorizeFilter.cs b/src/Microsoft.AspNet.Mvc.Core/Authorization/AuthorizeFilter.cs
index 69c6129310..fa871f7140 100644
--- a/src/Microsoft.AspNet.Mvc.Core/Authorization/AuthorizeFilter.cs
+++ b/src/Microsoft.AspNet.Mvc.Core/Authorization/AuthorizeFilter.cs
@@ -4,7 +4,6 @@
 using System.Linq;
 using System.Security.Claims;
 using System.Threading.Tasks;
-using Microsoft.AspNet.Authentication;
 using Microsoft.AspNet.Authorization;
 using Microsoft.Framework.DependencyInjection;
 using Microsoft.Framework.Internal;
diff --git a/src/Microsoft.AspNet.Mvc.Core/project.json b/src/Microsoft.AspNet.Mvc.Core/project.json
index 0a6ba1e6e4..fcabf2fdac 100644
--- a/src/Microsoft.AspNet.Mvc.Core/project.json
+++ b/src/Microsoft.AspNet.Mvc.Core/project.json
@@ -9,7 +9,6 @@
         "warningsAsErrors": true
     },
     "dependencies": {
-        "Microsoft.AspNet.Authentication": "1.0.0-*",
         "Microsoft.AspNet.Authorization": "1.0.0-*",
         "Microsoft.AspNet.FileProviders.Abstractions": "1.0.0-*",
         "Microsoft.AspNet.Hosting.Abstractions": "1.0.0-*",
@@ -21,6 +20,7 @@
         "Microsoft.Framework.NotNullAttribute.Sources": { "version": "1.0.0-*", "type": "build" },
         "Microsoft.Framework.PropertyActivator.Sources": { "version": "1.0.0-*", "type": "build" },
         "Microsoft.Framework.PropertyHelper.Sources": { "version": "1.0.0-*", "type": "build" },
+        "Microsoft.Framework.SecurityHelper.Sources": { "version": "1.0.0-*", "type": "build" },
         "Microsoft.Framework.Runtime.Abstractions": "1.0.0-*",
         "Newtonsoft.Json": "6.0.6"
     },