diff --git a/src/Microsoft.AspNet.Razor.Runtime.Precompilation/Properties/AssemblyInfo.cs b/src/Microsoft.AspNet.Razor.Runtime.Precompilation/Properties/AssemblyInfo.cs
index 7aa9708cf8..3835351f10 100644
--- a/src/Microsoft.AspNet.Razor.Runtime.Precompilation/Properties/AssemblyInfo.cs
+++ b/src/Microsoft.AspNet.Razor.Runtime.Precompilation/Properties/AssemblyInfo.cs
@@ -5,6 +5,6 @@ using System.Reflection;
 using System.Resources;
 using System.Runtime.CompilerServices;
 
-[assembly: InternalsVisibleTo("Microsoft.AspNet.Razor.Runtime.Precompilation.Test")]
+[assembly: InternalsVisibleTo("Microsoft.AspNet.Razor.Runtime.Precompilation.Test, PublicKey=0024000004800000940000000602000000240000525341310004000001000100f33a29044fa9d740c9b3213a93e57c84b472c84e0b8a0e1ae48e67a9f8f6de9d5f7f3d52ac23e48ac51801f1dc950abe901da34d2a9e3baadb141a17c77ef3c565dd5ee5054b91cf63bb3c6ab83f72ab3aafe93d0fc3c2348b764fafb0b1c0733de51459aeab46580384bf9d74c4e28164b7cde247f891ba07891c9d872ad2bb")]
 [assembly: NeutralResourcesLanguage("en-us")]
 [assembly: AssemblyMetadata("Serviceable", "True")]
diff --git a/src/Microsoft.AspNet.Razor.Runtime.Precompilation/project.json b/src/Microsoft.AspNet.Razor.Runtime.Precompilation/project.json
index de21c1284a..1d9aafcce0 100644
--- a/src/Microsoft.AspNet.Razor.Runtime.Precompilation/project.json
+++ b/src/Microsoft.AspNet.Razor.Runtime.Precompilation/project.json
@@ -6,7 +6,8 @@
     "url": "git://github.com/aspnet/razor"
   },
   "compilationOptions": {
-    "warningsAsErrors": true
+    "warningsAsErrors": true,
+    "keyFile": "../../tools/Key.snk"
   },
   "dependencies": {
     "Microsoft.Extensions.PropertyActivator.Sources": {
diff --git a/src/Microsoft.AspNet.Razor.Runtime/Properties/AssemblyInfo.cs b/src/Microsoft.AspNet.Razor.Runtime/Properties/AssemblyInfo.cs
index c928d1c023..d39b410d86 100644
--- a/src/Microsoft.AspNet.Razor.Runtime/Properties/AssemblyInfo.cs
+++ b/src/Microsoft.AspNet.Razor.Runtime/Properties/AssemblyInfo.cs
@@ -6,5 +6,5 @@ using System.Resources;
 using System.Runtime.CompilerServices;
 
 [assembly: AssemblyMetadata("Serviceable", "True")]
-[assembly: InternalsVisibleTo("Microsoft.AspNet.Razor.Runtime.Test")]
+[assembly: InternalsVisibleTo("Microsoft.AspNet.Razor.Runtime.Test, PublicKey=0024000004800000940000000602000000240000525341310004000001000100f33a29044fa9d740c9b3213a93e57c84b472c84e0b8a0e1ae48e67a9f8f6de9d5f7f3d52ac23e48ac51801f1dc950abe901da34d2a9e3baadb141a17c77ef3c565dd5ee5054b91cf63bb3c6ab83f72ab3aafe93d0fc3c2348b764fafb0b1c0733de51459aeab46580384bf9d74c4e28164b7cde247f891ba07891c9d872ad2bb")]
 [assembly: NeutralResourcesLanguage("en-us")]
\ No newline at end of file
diff --git a/src/Microsoft.AspNet.Razor.Runtime/project.json b/src/Microsoft.AspNet.Razor.Runtime/project.json
index f209f7d887..3be4b1059f 100644
--- a/src/Microsoft.AspNet.Razor.Runtime/project.json
+++ b/src/Microsoft.AspNet.Razor.Runtime/project.json
@@ -1,6 +1,10 @@
 {
   "description": "Runtime components for rendering Razor pages.",
   "version": "4.0.0-*",
+  "compilationOptions": {
+    "warningsAsErrors": true,
+    "keyFile": "../../tools/Key.snk"
+  },
   "repository": {
     "type": "git",
     "url": "git://github.com/aspnet/razor"
diff --git a/src/Microsoft.AspNet.Razor/Properties/AssemblyInfo.cs b/src/Microsoft.AspNet.Razor/Properties/AssemblyInfo.cs
index 1c15a5cb3a..d97f09becf 100644
--- a/src/Microsoft.AspNet.Razor/Properties/AssemblyInfo.cs
+++ b/src/Microsoft.AspNet.Razor/Properties/AssemblyInfo.cs
@@ -5,6 +5,6 @@ using System.Reflection;
 using System.Resources;
 using System.Runtime.CompilerServices;
 
-[assembly: InternalsVisibleTo("Microsoft.AspNet.Razor.Test")]
+[assembly: InternalsVisibleTo("Microsoft.AspNet.Razor.Test, PublicKey=0024000004800000940000000602000000240000525341310004000001000100f33a29044fa9d740c9b3213a93e57c84b472c84e0b8a0e1ae48e67a9f8f6de9d5f7f3d52ac23e48ac51801f1dc950abe901da34d2a9e3baadb141a17c77ef3c565dd5ee5054b91cf63bb3c6ab83f72ab3aafe93d0fc3c2348b764fafb0b1c0733de51459aeab46580384bf9d74c4e28164b7cde247f891ba07891c9d872ad2bb")]
 [assembly: AssemblyMetadata("Serviceable", "True")]
 [assembly: NeutralResourcesLanguage("en-us")]
\ No newline at end of file
diff --git a/src/Microsoft.AspNet.Razor/project.json b/src/Microsoft.AspNet.Razor/project.json
index c63466e9e4..bad2294b53 100644
--- a/src/Microsoft.AspNet.Razor/project.json
+++ b/src/Microsoft.AspNet.Razor/project.json
@@ -1,6 +1,10 @@
 {
   "description": "Razor is a markup syntax for adding server-side logic to web pages. This package contains the Razor parser and code generation infrastructure.",
   "version": "4.0.0-*",
+  "compilationOptions": {
+    "warningsAsErrors": true,
+    "keyFile": "../../tools/Key.snk"
+  },
   "repository": {
     "type": "git",
     "url": "git://github.com/aspnet/razor"
diff --git a/test/Microsoft.AspNet.Razor.Runtime.Precompilation.Files/project.json b/test/Microsoft.AspNet.Razor.Runtime.Precompilation.Files/project.json
index df4fcd4086..1ae942d905 100644
--- a/test/Microsoft.AspNet.Razor.Runtime.Precompilation.Files/project.json
+++ b/test/Microsoft.AspNet.Razor.Runtime.Precompilation.Files/project.json
@@ -1,5 +1,9 @@
 {
     "version": "1.0.0-*",
+    "compilationOptions": {
+        "warningsAsErrors": true,
+        "keyFile": "../../tools/Key.snk"
+    },
     "dependencies": {
         "Microsoft.AspNet.Razor.Runtime.Precompilation": "4.0.0-*"
     },
diff --git a/test/Microsoft.AspNet.Razor.Runtime.Precompilation.Test/project.json b/test/Microsoft.AspNet.Razor.Runtime.Precompilation.Test/project.json
index 46607b1aa6..a14207d70a 100644
--- a/test/Microsoft.AspNet.Razor.Runtime.Precompilation.Test/project.json
+++ b/test/Microsoft.AspNet.Razor.Runtime.Precompilation.Test/project.json
@@ -1,5 +1,9 @@
 {
     "version": "1.0.0",
+    "compilationOptions": {
+      "warningsAsErrors": true,
+      "keyFile": "../../tools/Key.snk"
+    },
     "dependencies": {
         "Microsoft.AspNet.Razor.Runtime.Precompilation.Files": "1.0.0-*",
         "Microsoft.AspNet.Razor.Runtime.Test": "1.0.0-*",
diff --git a/test/Microsoft.AspNet.Razor.Runtime.Test/project.json b/test/Microsoft.AspNet.Razor.Runtime.Test/project.json
index 5633b9860c..3af45e24c5 100644
--- a/test/Microsoft.AspNet.Razor.Runtime.Test/project.json
+++ b/test/Microsoft.AspNet.Razor.Runtime.Test/project.json
@@ -1,5 +1,9 @@
 {
   "version": "1.0.0",
+  "compilationOptions": {
+    "warningsAsErrors": true,
+    "keyFile": "../../tools/Key.snk"
+  },
   "dependencies": {
     "Microsoft.AspNet.Razor.Runtime": "4.0.0-*",
     "Microsoft.AspNet.Razor.Test.Sources": {
diff --git a/test/Microsoft.AspNet.Razor.Test/project.json b/test/Microsoft.AspNet.Razor.Test/project.json
index f6fcbae0cb..5ab59088d8 100644
--- a/test/Microsoft.AspNet.Razor.Test/project.json
+++ b/test/Microsoft.AspNet.Razor.Test/project.json
@@ -28,6 +28,8 @@
     }
   },
   "compilationOptions": {
-    "define": [ "__RemoveThisBitTo__GENERATE_BASELINES" ]
+    "define": [ "__RemoveThisBitTo__GENERATE_BASELINES" ],
+    "warningsAsErrors": true,
+    "keyFile": "../../tools/Key.snk"
   }
 }
diff --git a/tools/Key.snk b/tools/Key.snk
new file mode 100644
index 0000000000..e10e4889c1
Binary files /dev/null and b/tools/Key.snk differ