diff --git a/src/Microsoft.AspNet.Server.Kestrel/KestrelEngine.cs b/src/Microsoft.AspNet.Server.Kestrel/KestrelEngine.cs
index dec15232f7..9a68cd9df3 100644
--- a/src/Microsoft.AspNet.Server.Kestrel/KestrelEngine.cs
+++ b/src/Microsoft.AspNet.Server.Kestrel/KestrelEngine.cs
@@ -9,7 +9,7 @@ using Microsoft.AspNet.Http.Features;
 using Microsoft.AspNet.Server.Kestrel.Http;
 using Microsoft.AspNet.Server.Kestrel.Infrastructure;
 using Microsoft.AspNet.Server.Kestrel.Networking;
-using Microsoft.Dnx.Runtime;
+using Microsoft.Extensions.PlatformAbstractions;
 using Microsoft.Extensions.Logging;
 
 namespace Microsoft.AspNet.Server.Kestrel
diff --git a/src/Microsoft.AspNet.Server.Kestrel/ServerFactory.cs b/src/Microsoft.AspNet.Server.Kestrel/ServerFactory.cs
index f39bff2a27..e801749a87 100644
--- a/src/Microsoft.AspNet.Server.Kestrel/ServerFactory.cs
+++ b/src/Microsoft.AspNet.Server.Kestrel/ServerFactory.cs
@@ -9,9 +9,9 @@ using Microsoft.AspNet.Hosting.Server;
 using Microsoft.AspNet.Http.Features;
 using Microsoft.AspNet.Server.Features;
 using Microsoft.AspNet.Server.Kestrel.Http;
-using Microsoft.Dnx.Runtime;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.PlatformAbstractions;
 
 namespace Microsoft.AspNet.Server.Kestrel
 {
diff --git a/src/Microsoft.AspNet.Server.Kestrel/project.json b/src/Microsoft.AspNet.Server.Kestrel/project.json
index 24e5f01b8f..d9a6da0f42 100644
--- a/src/Microsoft.AspNet.Server.Kestrel/project.json
+++ b/src/Microsoft.AspNet.Server.Kestrel/project.json
@@ -7,7 +7,7 @@
   },
   "dependencies": {
     "Microsoft.AspNet.Hosting": "1.0.0-*",
-    "Microsoft.Dnx.Runtime.Abstractions": "1.0.0-*",
+    "Microsoft.Extensions.PlatformAbstractions": "1.0.0-*",
     "Microsoft.Extensions.Logging.Abstractions": "1.0.0-*",
     "System.Numerics.Vectors": "4.1.1-beta-*",
     "Microsoft.StandardsPolice": {
diff --git a/test/Microsoft.AspNet.Server.KestrelTests/EngineTests.cs b/test/Microsoft.AspNet.Server.KestrelTests/EngineTests.cs
index 4bde4179f6..633c131c53 100644
--- a/test/Microsoft.AspNet.Server.KestrelTests/EngineTests.cs
+++ b/test/Microsoft.AspNet.Server.KestrelTests/EngineTests.cs
@@ -10,8 +10,7 @@ using System.Threading.Tasks;
 using Microsoft.AspNet.Http.Features;
 using Microsoft.AspNet.Server.Kestrel;
 using Microsoft.AspNet.Server.Kestrel.Filter;
-using Microsoft.Dnx.Runtime;
-using Microsoft.Dnx.Runtime.Infrastructure;
+using Microsoft.Extensions.PlatformAbstractions;
 using Microsoft.Extensions.Logging;
 using Xunit;
 
diff --git a/test/Microsoft.AspNet.Server.KestrelTests/MultipleLoopTests.cs b/test/Microsoft.AspNet.Server.KestrelTests/MultipleLoopTests.cs
index ddbecbd06d..cb870ea144 100644
--- a/test/Microsoft.AspNet.Server.KestrelTests/MultipleLoopTests.cs
+++ b/test/Microsoft.AspNet.Server.KestrelTests/MultipleLoopTests.cs
@@ -6,8 +6,7 @@ using System.Threading;
 using Microsoft.AspNet.Server.Kestrel;
 using Microsoft.AspNet.Server.Kestrel.Infrastructure;
 using Microsoft.AspNet.Server.Kestrel.Networking;
-using Microsoft.Dnx.Runtime;
-using Microsoft.Dnx.Runtime.Infrastructure;
+using Microsoft.Extensions.PlatformAbstractions;
 using Xunit;
 
 namespace Microsoft.AspNet.Server.KestrelTests
diff --git a/test/Microsoft.AspNet.Server.KestrelTests/NetworkingTests.cs b/test/Microsoft.AspNet.Server.KestrelTests/NetworkingTests.cs
index 363cb1ea4d..aea3274475 100644
--- a/test/Microsoft.AspNet.Server.KestrelTests/NetworkingTests.cs
+++ b/test/Microsoft.AspNet.Server.KestrelTests/NetworkingTests.cs
@@ -9,8 +9,7 @@ using System.Threading.Tasks;
 using Microsoft.AspNet.Server.Kestrel;
 using Microsoft.AspNet.Server.Kestrel.Infrastructure;
 using Microsoft.AspNet.Server.Kestrel.Networking;
-using Microsoft.Dnx.Runtime;
-using Microsoft.Dnx.Runtime.Infrastructure;
+using Microsoft.Extensions.PlatformAbstractions;
 using Xunit;
 
 namespace Microsoft.AspNet.Server.KestrelTests
diff --git a/test/Microsoft.AspNet.Server.KestrelTests/Program.cs b/test/Microsoft.AspNet.Server.KestrelTests/Program.cs
index 858790c686..83dbb72393 100644
--- a/test/Microsoft.AspNet.Server.KestrelTests/Program.cs
+++ b/test/Microsoft.AspNet.Server.KestrelTests/Program.cs
@@ -2,7 +2,7 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
-using Microsoft.Dnx.Runtime;
+using Microsoft.Extensions.PlatformAbstractions;
 
 namespace Microsoft.AspNet.Server.KestrelTests
 {
diff --git a/test/Microsoft.AspNet.Server.KestrelTests/TestServer.cs b/test/Microsoft.AspNet.Server.KestrelTests/TestServer.cs
index d47238341d..698b7a1d57 100644
--- a/test/Microsoft.AspNet.Server.KestrelTests/TestServer.cs
+++ b/test/Microsoft.AspNet.Server.KestrelTests/TestServer.cs
@@ -5,8 +5,7 @@ using System;
 using System.Threading.Tasks;
 using Microsoft.AspNet.Server.Kestrel;
 using Microsoft.AspNet.Server.Kestrel.Http;
-using Microsoft.Dnx.Runtime;
-using Microsoft.Dnx.Runtime.Infrastructure;
+using Microsoft.Extensions.PlatformAbstractions;
 using Microsoft.AspNet.Http.Features;
 
 namespace Microsoft.AspNet.Server.KestrelTests
diff --git a/tools/Microsoft.AspNet.Server.Kestrel.LibuvCopier/Program.cs b/tools/Microsoft.AspNet.Server.Kestrel.LibuvCopier/Program.cs
index 3904cfc2ed..0226bbde54 100644
--- a/tools/Microsoft.AspNet.Server.Kestrel.LibuvCopier/Program.cs
+++ b/tools/Microsoft.AspNet.Server.Kestrel.LibuvCopier/Program.cs
@@ -1,20 +1,13 @@
 using System;
 using System.IO;
 using System.Linq;
-using Microsoft.Dnx.Runtime;
+using Microsoft.Extensions.PlatformAbstractions;
 using Newtonsoft.Json.Linq;
 
 namespace Microsoft.AspNet.Server.Kestrel.LibuvCopier
 {
     public class Program
     {
-        private readonly IRuntimeEnvironment _runtimeEnv;
-
-        public Program(IRuntimeEnvironment runtimeEnv)
-        {
-            _runtimeEnv = runtimeEnv;
-        }
-
         public void Main(string[] args)
         {
             try
@@ -74,7 +67,8 @@ namespace Microsoft.AspNet.Server.Kestrel.LibuvCopier
 #if DNX451
             return Environment.GetFolderPath(Environment.SpecialFolder.UserProfile);
 #else
-            if (_runtimeEnv.OperatingSystem == "Windows")
+            var runtimeEnv = PlatformServices.Default.Runtime;
+            if (runtimeEnv.OperatingSystem == "Windows")
             {
                 return Environment.GetEnvironmentVariable("USERPROFILE") ??
                     Environment.GetEnvironmentVariable("HOMEDRIVE") + Environment.GetEnvironmentVariable("HOMEPATH");
diff --git a/tools/Microsoft.AspNet.Server.Kestrel.LibuvCopier/project.json b/tools/Microsoft.AspNet.Server.Kestrel.LibuvCopier/project.json
index 681bfd77ee..373002bafb 100644
--- a/tools/Microsoft.AspNet.Server.Kestrel.LibuvCopier/project.json
+++ b/tools/Microsoft.AspNet.Server.Kestrel.LibuvCopier/project.json
@@ -7,7 +7,7 @@
   "licenseUrl": "",
 
   "dependencies": {
-    "Microsoft.Dnx.Runtime.Abstractions": "1.0.0-*",
+    "Microsoft.Extensions.PlatformAbstractions": "1.0.0-*",
     "Newtonsoft.Json": "7.0.1"
   },