diff --git a/src/Microsoft.AspNet.Routing/project.json b/src/Microsoft.AspNet.Routing/project.json
index ef1ccf1657..196d83ee36 100644
--- a/src/Microsoft.AspNet.Routing/project.json
+++ b/src/Microsoft.AspNet.Routing/project.json
@@ -1,4 +1,4 @@
-{
+{
   "version": "1.0.0-*",
   "compilationOptions": {
     "warningsAsErrors": true
@@ -13,7 +13,7 @@
     "net45": {},
     "k10": {
       "dependencies": {
-        "System.Collections": "4.0.0.0",
+        "System.Collections": "4.0.10.0",
         "System.Diagnostics.Contracts": "4.0.0.0",
         "System.Diagnostics.Debug": "4.0.10.0",
         "System.Diagnostics.Tools": "4.0.0.0",