diff --git a/src/Microsoft.AspNet.Mvc.Core/project.json b/src/Microsoft.AspNet.Mvc.Core/project.json
index 11b4ddf987..2655d5cde9 100644
--- a/src/Microsoft.AspNet.Mvc.Core/project.json
+++ b/src/Microsoft.AspNet.Mvc.Core/project.json
@@ -35,7 +35,7 @@
         "System.Diagnostics.Tools": "4.0.0.0",
         "System.Dynamic.Runtime": "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.Linq.Expressions": "4.0.0.0",
         "System.Reflection": "4.0.10.0",
diff --git a/src/Microsoft.AspNet.Mvc.ModelBinding/project.json b/src/Microsoft.AspNet.Mvc.ModelBinding/project.json
index 76fafa0c2b..cabb1febae 100644
--- a/src/Microsoft.AspNet.Mvc.ModelBinding/project.json
+++ b/src/Microsoft.AspNet.Mvc.ModelBinding/project.json
@@ -29,7 +29,7 @@
         "System.Diagnostics.Tools": "4.0.0.0",
         "System.Dynamic.Runtime": "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.Reflection.Emit.ILGeneration": "4.0.0.0",
diff --git a/src/Microsoft.AspNet.Mvc.Razor.Host/project.json b/src/Microsoft.AspNet.Mvc.Razor.Host/project.json
index 3aad3f4aee..a687c520db 100644
--- a/src/Microsoft.AspNet.Mvc.Razor.Host/project.json
+++ b/src/Microsoft.AspNet.Mvc.Razor.Host/project.json
@@ -26,7 +26,7 @@
         "System.Diagnostics.Tools": "4.0.0.0",
         "System.Dynamic.Runtime": "4.0.0.0",
         "System.Globalization": "4.0.10.0",
-        "System.IO": "4.0.0.0",
+        "System.IO": "4.0.10.0",
         "System.IO.FileSystem": "4.0.0.0",
         "System.Linq": "4.0.0.0",
         "System.Reflection": "4.0.10.0",
diff --git a/src/Microsoft.AspNet.Mvc.Razor/project.json b/src/Microsoft.AspNet.Mvc.Razor/project.json
index 38defe28e2..8a37e104c3 100644
--- a/src/Microsoft.AspNet.Mvc.Razor/project.json
+++ b/src/Microsoft.AspNet.Mvc.Razor/project.json
@@ -35,7 +35,7 @@
         "System.Diagnostics.Tools": "4.0.0.0",
         "System.Dynamic.Runtime": "4.0.0.0",
         "System.Globalization": "4.0.10.0",
-        "System.IO": "4.0.0.0",
+        "System.IO": "4.0.10.0",
         "System.IO.FileSystem": "4.0.0.0",
         "System.Linq": "4.0.0.0",
         "System.Reflection": "4.0.10.0",