diff --git a/src/Microsoft.AspNet.Mvc.Core/project.json b/src/Microsoft.AspNet.Mvc.Core/project.json
index 99dc5f7ee0..522996240a 100644
--- a/src/Microsoft.AspNet.Mvc.Core/project.json
+++ b/src/Microsoft.AspNet.Mvc.Core/project.json
@@ -1,4 +1,4 @@
-{
+{
   "version": "6.0.0-*",
   "compilationOptions": {
     "warningsAsErrors": true
@@ -20,7 +20,7 @@
     "k10": {
       "dependencies": {
         "Microsoft.CSharp": "4.0.0.0",
-        "System.Collections": "4.0.0.0",
+        "System.Collections": "4.0.10.0",
         "System.Collections.Concurrent": "4.0.0.0",
         "System.ComponentModel": "4.0.0.0",
         "System.Diagnostics.Contracts": "4.0.0.0",
diff --git a/src/Microsoft.AspNet.Mvc.ModelBinding/project.json b/src/Microsoft.AspNet.Mvc.ModelBinding/project.json
index 4d4e1e22a1..a515f512b7 100644
--- a/src/Microsoft.AspNet.Mvc.ModelBinding/project.json
+++ b/src/Microsoft.AspNet.Mvc.ModelBinding/project.json
@@ -1,4 +1,4 @@
-{
+{
   "version": "6.0.0-*",
   "compilationOptions": {
     "warningsAsErrors": true
@@ -19,7 +19,7 @@
     },
     "k10": {
       "dependencies": {
-        "System.Collections": "4.0.0.0",
+        "System.Collections": "4.0.10.0",
         "System.Collections.Concurrent": "4.0.0.0",
         "System.ComponentModel": "4.0.0.0",
         "System.Diagnostics.Contracts": "4.0.0.0",
diff --git a/src/Microsoft.AspNet.Mvc.Razor/project.json b/src/Microsoft.AspNet.Mvc.Razor/project.json
index 7791daf0c5..98623bc387 100644
--- a/src/Microsoft.AspNet.Mvc.Razor/project.json
+++ b/src/Microsoft.AspNet.Mvc.Razor/project.json
@@ -1,4 +1,4 @@
-{
+{
   "version": "6.0.0-*",
   "compilationOptions": {
     "warningsAsErrors": false
@@ -26,7 +26,7 @@
     },
     "k10": {
       "dependencies": {
-        "System.Collections": "4.0.0.0",
+        "System.Collections": "4.0.10.0",
         "System.Collections.Concurrent": "4.0.0.0",
         "System.ComponentModel": "4.0.0.0",
         "System.Diagnostics.Contracts": "4.0.0.0",
diff --git a/test/Microsoft.AspNet.Mvc.ModelBinding.Test/project.json b/test/Microsoft.AspNet.Mvc.ModelBinding.Test/project.json
index 4cb6c50049..422b84a159 100644
--- a/test/Microsoft.AspNet.Mvc.ModelBinding.Test/project.json
+++ b/test/Microsoft.AspNet.Mvc.ModelBinding.Test/project.json
@@ -1,4 +1,4 @@
-{
+{
   "compilationOptions": {
     "warningsAsErrors": true
   },
@@ -28,7 +28,7 @@
     },
     "k10" : { 
       dependencies: {
-        "System.Collections": "4.0.0.0",
+        "System.Collections": "4.0.10.0",
         "System.ComponentModel": "4.0.0.0",
         "System.Globalization": "4.0.10.0",
         "System.Linq": "4.0.0.0",