diff --git a/samples/ErrorPageSample/project.json b/samples/ErrorPageSample/project.json
index 478d52a3dc..8aa5fccbfa 100644
--- a/samples/ErrorPageSample/project.json
+++ b/samples/ErrorPageSample/project.json
@@ -1,4 +1,4 @@
-{
+{
   "dependencies": {
     "Helios" :  "1.0.0-*",
     "Microsoft.AspNet.Diagnostics": "",
@@ -12,7 +12,7 @@
     "net45": {},
     "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/samples/WelcomePageSample/project.json b/samples/WelcomePageSample/project.json
index e3a968da77..b2c2d7a43c 100644
--- a/samples/WelcomePageSample/project.json
+++ b/samples/WelcomePageSample/project.json
@@ -1,4 +1,4 @@
-{
+{
   "dependencies": {
     "Helios" :  "1.0.0-*",
     "Microsoft.AspNet.Diagnostics": "",
@@ -12,7 +12,7 @@
     "net45": { },
     "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.Diagnostics/project.json b/src/Microsoft.AspNet.Diagnostics/project.json
index aca3fd7503..7a8865035e 100644
--- a/src/Microsoft.AspNet.Diagnostics/project.json
+++ b/src/Microsoft.AspNet.Diagnostics/project.json
@@ -1,4 +1,4 @@
-{
+{
   "version": "1.0.0-*",
   "dependencies": {
     "Microsoft.AspNet.FeatureModel": "1.0.0-*",
@@ -9,7 +9,7 @@
     "net45": {},
     "k10": {
       "dependencies": {
-        "System.Collections": "4.0.0.0",
+        "System.Collections": "4.0.10.0",
         "System.ComponentModel": "4.0.0.0",
         "System.Diagnostics.Debug": "4.0.10.0",
         "System.Diagnostics.Tools": "4.0.0.0",