diff --git a/samples/HelloWorld/project.json b/samples/HelloWorld/project.json
index b2cbb497c0..9f94bb7a69 100644
--- a/samples/HelloWorld/project.json
+++ b/samples/HelloWorld/project.json
@@ -1,7 +1,8 @@
 {
   "dependencies": {
     "Microsoft.Net.Http.Server": "0.1.0-*",
-    "Microsoft.Net.WebSockets.Server": "0.1.0-*"
+    "Microsoft.Net.WebSockets.Server": "0.1.0-*",
+    "Microsoft.NETCore.Platforms": "1.0.1-*"
   },
   "commands": {
     "sample": "HelloWorld"
diff --git a/samples/HotAddSample/project.json b/samples/HotAddSample/project.json
index e0e8f7fb91..9eb1fe1013 100644
--- a/samples/HotAddSample/project.json
+++ b/samples/HotAddSample/project.json
@@ -2,7 +2,8 @@
   "version": "1.0.0-*",
   "dependencies": {
     "Microsoft.AspNetCore.Server.WebListener": "0.1.0-*",
-    "Microsoft.Extensions.Logging.Console": "1.0.0-*"
+    "Microsoft.Extensions.Logging.Console": "1.0.0-*",
+    "Microsoft.NETCore.Platforms": "1.0.1-*"
   },
   "compilationOptions": {
     "emitEntryPoint": true
diff --git a/samples/SelfHostServer/project.json b/samples/SelfHostServer/project.json
index d868bc2d1e..ded562b37c 100644
--- a/samples/SelfHostServer/project.json
+++ b/samples/SelfHostServer/project.json
@@ -1,7 +1,8 @@
 {
   "dependencies": {
     "Microsoft.AspNetCore.Server.WebListener": "0.1.0-*",
-    "Microsoft.Extensions.Logging.Console": "1.0.0-*"
+    "Microsoft.Extensions.Logging.Console": "1.0.0-*",
+    "Microsoft.NETCore.Platforms": "1.0.1-*"
   },
   "compilationOptions": {
     "emitEntryPoint": true
diff --git a/src/Microsoft.AspNetCore.Server.WebListener/project.json b/src/Microsoft.AspNetCore.Server.WebListener/project.json
index 2708965453..4fedde9e11 100644
--- a/src/Microsoft.AspNetCore.Server.WebListener/project.json
+++ b/src/Microsoft.AspNetCore.Server.WebListener/project.json
@@ -16,7 +16,8 @@
     "dotnet5.4": {
       "dependencies": {
         "System.Security.Claims": "4.0.1-*"
-      }
+      },
+      "imports": "portable-net451+win8"
     }
   }
 }
\ No newline at end of file
diff --git a/test/Microsoft.AspNetCore.Server.WebListener.FunctionalTests/project.json b/test/Microsoft.AspNetCore.Server.WebListener.FunctionalTests/project.json
index 112047e7aa..103d616411 100644
--- a/test/Microsoft.AspNetCore.Server.WebListener.FunctionalTests/project.json
+++ b/test/Microsoft.AspNetCore.Server.WebListener.FunctionalTests/project.json
@@ -5,7 +5,8 @@
   },
   "dependencies": {
     "Microsoft.AspNetCore.Server.WebListener": "0.1.0-*",
-    "Microsoft.AspNetCore.Testing": "1.0.0-*"
+    "Microsoft.AspNetCore.Testing": "1.0.0-*",
+    "Microsoft.NETCore.Platforms": "1.0.1-*"
   },
   "frameworks": {
     "dnx451": {
@@ -23,7 +24,8 @@
         "System.Net.Requests": "4.0.11-*",
         "System.Net.WebHeaderCollection": "4.0.1-*",
         "xunit.runner.aspnet": "2.0.0-aspnet-*"
-      }
+      },
+      "imports": "portable-net451+win8"
     }
   }
 }
\ No newline at end of file
diff --git a/test/Microsoft.Net.Http.Server.FunctionalTests/project.json b/test/Microsoft.Net.Http.Server.FunctionalTests/project.json
index 33a6ef6a0b..5fcc744ab5 100644
--- a/test/Microsoft.Net.Http.Server.FunctionalTests/project.json
+++ b/test/Microsoft.Net.Http.Server.FunctionalTests/project.json
@@ -7,6 +7,7 @@
     "Microsoft.Net.Http.Server": "0.1.0-*",
     "Microsoft.Net.WebSockets.Server": "0.1.0-*",
     "Microsoft.AspNetCore.Testing": "1.0.0-*",
+    "Microsoft.NETCore.Platforms": "1.0.1-*",
     "xunit.runner.aspnet": "2.0.0-aspnet-*"
   },
   "frameworks": {
@@ -27,7 +28,8 @@
         "System.Net.Requests": "4.0.11-*",
         "System.Net.WebSockets.Client": "4.0.0-*",
         "xunit.runner.aspnet": "2.0.0-aspnet-*"
-      }
+      },
+      "imports": "portable-net451+win8"
     }
   }
 }
\ No newline at end of file