diff --git a/test/Microsoft.AspNetCore.Localization.FunctionalTests/project.json b/test/Microsoft.AspNetCore.Localization.FunctionalTests/project.json
index 83e816a7a8..d1bb9faa0f 100644
--- a/test/Microsoft.AspNetCore.Localization.FunctionalTests/project.json
+++ b/test/Microsoft.AspNetCore.Localization.FunctionalTests/project.json
@@ -8,6 +8,7 @@
   "dependencies": {
     "Microsoft.AspNetCore.Server.Testing": "1.0.0-*",
     "Microsoft.Extensions.Logging.Console": "1.0.0-*",
+    "Microsoft.NETCore.Platforms": "1.0.1-*",
     "xunit.runner.aspnet": "2.0.0-aspnet-*"
   },
   "frameworks": {
diff --git a/test/Microsoft.AspNetCore.Localization.Tests/project.json b/test/Microsoft.AspNetCore.Localization.Tests/project.json
index 99b8a4aaae..6f0052458d 100644
--- a/test/Microsoft.AspNetCore.Localization.Tests/project.json
+++ b/test/Microsoft.AspNetCore.Localization.Tests/project.json
@@ -5,6 +5,7 @@
   "dependencies": {
     "Microsoft.AspNetCore.Localization": "1.0.0-*",
     "Microsoft.AspNetCore.TestHost": "1.0.0-*",
+    "Microsoft.NETCore.Platforms": "1.0.1-*",
     "xunit": "2.1.0-*",
     "xunit.runner.aspnet": "2.0.0-aspnet-*"
   },
diff --git a/test/Microsoft.Extensions.Localization.Tests/project.json b/test/Microsoft.Extensions.Localization.Tests/project.json
index fd13805dfe..fc440eba79 100644
--- a/test/Microsoft.Extensions.Localization.Tests/project.json
+++ b/test/Microsoft.Extensions.Localization.Tests/project.json
@@ -6,6 +6,7 @@
   "dependencies": {
     "Microsoft.Extensions.DependencyInjection": "1.0.0-*",
     "Microsoft.Extensions.Localization": "1.0.0-*",
+    "Microsoft.NETCore.Platforms": "1.0.1-*",
     "xunit": "2.1.0-*",
     "xunit.runner.aspnet": "2.0.0-aspnet-*"
   },