diff --git a/src/Microsoft.AspNet.StaticFiles/project.json b/src/Microsoft.AspNet.StaticFiles/project.json
index 179534a7df..68b5a3bdb7 100644
--- a/src/Microsoft.AspNet.StaticFiles/project.json
+++ b/src/Microsoft.AspNet.StaticFiles/project.json
@@ -1,4 +1,4 @@
-{
+{
   "version": "1.0.0-*",
   "dependencies": {
     "Microsoft.AspNet.FileSystems": "1.0.0-*",
@@ -9,7 +9,7 @@
     "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",