diff --git a/src/Microsoft.AspNet.Routing/project.json b/src/Microsoft.AspNet.Routing/project.json
index addec8bf83..e1f0ae7320 100644
--- a/src/Microsoft.AspNet.Routing/project.json
+++ b/src/Microsoft.AspNet.Routing/project.json
@@ -13,6 +13,7 @@
     "aspnetcore50": {
       "dependencies": {
         "System.Diagnostics.Contracts": "4.0.0-beta-*",
+        "System.Reflection.Extensions": "4.0.0-beta-*",
         "System.Text.RegularExpressions": "4.0.10-beta-*"
       }
     }