diff --git a/samples/CookieSample/project.json b/samples/CookieSample/project.json
index e51b35e481..85f8a1e331 100644
--- a/samples/CookieSample/project.json
+++ b/samples/CookieSample/project.json
@@ -22,7 +22,7 @@
         "System.Diagnostics.Debug": "4.0.10.0",
         "System.Diagnostics.Tools": "4.0.0.0",
         "System.Globalization": "4.0.10.0",
-        "System.IO": "4.0.0.0",
+        "System.IO": "4.0.10.0",
         "System.Linq": "4.0.0.0",
         "System.Reflection": "4.0.10.0",
         "System.Resources.ResourceManager": "4.0.0.0",
diff --git a/src/Microsoft.AspNet.Security.Cookies/project.json b/src/Microsoft.AspNet.Security.Cookies/project.json
index 01a7751fb5..59c8b666fb 100644
--- a/src/Microsoft.AspNet.Security.Cookies/project.json
+++ b/src/Microsoft.AspNet.Security.Cookies/project.json
@@ -22,7 +22,7 @@
         "System.Diagnostics.Debug": "4.0.10.0",
         "System.Diagnostics.Tools": "4.0.0.0",
         "System.Globalization": "4.0.10.0",
-        "System.IO": "4.0.0.0",
+        "System.IO": "4.0.10.0",
         "System.IO.Compression": "4.0.0.0",
         "System.Linq": "4.0.0.0",
         "System.Reflection": "4.0.10.0",
diff --git a/src/Microsoft.AspNet.Security/project.json b/src/Microsoft.AspNet.Security/project.json
index 4eae846bfc..e79296344e 100644
--- a/src/Microsoft.AspNet.Security/project.json
+++ b/src/Microsoft.AspNet.Security/project.json
@@ -19,7 +19,7 @@
         "System.Diagnostics.Debug": "4.0.10.0",
         "System.Diagnostics.Tools": "4.0.0.0",
         "System.Globalization": "4.0.10.0",
-        "System.IO": "4.0.0.0",
+        "System.IO": "4.0.10.0",
         "System.IO.Compression": "4.0.0.0",
         "System.Linq": "4.0.0.0",
         "System.Reflection": "4.0.10.0",