diff --git a/samples/CookieSample/project.json b/samples/CookieSample/project.json
index ca0d99be0f..e51b35e481 100644
--- a/samples/CookieSample/project.json
+++ b/samples/CookieSample/project.json
@@ -1,4 +1,4 @@
-{
+{
   "dependencies": {
     "Microsoft.AspNet.FeatureModel": "1.0.0-*",
     "Microsoft.AspNet.Hosting": "1.0.0-*",
@@ -17,7 +17,7 @@
     },
     "k10": {
       "dependencies": {
-        "System.Collections": "4.0.0.0",
+        "System.Collections": "4.0.10.0",
         "System.Console": "4.0.0.0",
         "System.Diagnostics.Debug": "4.0.10.0",
         "System.Diagnostics.Tools": "4.0.0.0",
diff --git a/src/Microsoft.AspNet.Security.Cookies/project.json b/src/Microsoft.AspNet.Security.Cookies/project.json
index 00ff14a94c..01a7751fb5 100644
--- a/src/Microsoft.AspNet.Security.Cookies/project.json
+++ b/src/Microsoft.AspNet.Security.Cookies/project.json
@@ -1,4 +1,4 @@
-{
+{
   "version": "1.0.0-*",
   "dependencies": {
     "Microsoft.AspNet.FeatureModel": "1.0.0-*",
@@ -16,7 +16,7 @@
     "net45": {},
     "k10": {
       "dependencies": {
-        "System.Collections": "4.0.0.0",
+        "System.Collections": "4.0.10.0",
         "System.ComponentModel": "4.0.0.0",
         "System.Console": "4.0.0.0",
         "System.Diagnostics.Debug": "4.0.10.0",
diff --git a/src/Microsoft.AspNet.Security/project.json b/src/Microsoft.AspNet.Security/project.json
index 6bbc65fc8a..4eae846bfc 100644
--- a/src/Microsoft.AspNet.Security/project.json
+++ b/src/Microsoft.AspNet.Security/project.json
@@ -1,4 +1,4 @@
-{
+{
   "version": "1.0.0-*",
   "dependencies": {
     "Microsoft.AspNet.FeatureModel": "1.0.0-*",
@@ -13,7 +13,7 @@
     "net45": {},
     "k10": {
       "dependencies": {
-        "System.Collections": "4.0.0.0",
+        "System.Collections": "4.0.10.0",
         "System.ComponentModel": "4.0.0.0",
         "System.Console": "4.0.0.0",
         "System.Diagnostics.Debug": "4.0.10.0",