diff --git a/test/Microsoft.AspNetCore.WebSockets.Client.Test/project.json b/test/Microsoft.AspNetCore.WebSockets.Client.Test/project.json
index 668a4fd631..de12b42029 100644
--- a/test/Microsoft.AspNetCore.WebSockets.Client.Test/project.json
+++ b/test/Microsoft.AspNetCore.WebSockets.Client.Test/project.json
@@ -5,6 +5,7 @@
     "Microsoft.AspNetCore.WebSockets.Server": "0.1.0-*",
     "Microsoft.AspNetCore.Server.Kestrel": "1.0.0-*",
     "Microsoft.AspNetCore.Testing": "1.0.0-*",
+    "Microsoft.NETCore.Platforms": "1.0.1-*",
     "xunit.runner.aspnet": "2.0.0-aspnet-*"
   },
   "frameworks": {
diff --git a/test/Microsoft.AspNetCore.WebSockets.Protocol.Test/project.json b/test/Microsoft.AspNetCore.WebSockets.Protocol.Test/project.json
index 6048c89cf1..15de66709f 100644
--- a/test/Microsoft.AspNetCore.WebSockets.Protocol.Test/project.json
+++ b/test/Microsoft.AspNetCore.WebSockets.Protocol.Test/project.json
@@ -1,6 +1,7 @@
 {
   "dependencies": {
     "Microsoft.AspNetCore.WebSockets.Protocol": "0.1.0-*",
+    "Microsoft.NETCore.Platforms": "1.0.1-*",
     "xunit.runner.aspnet": "2.0.0-aspnet-*"
   },
   "frameworks": {