diff --git a/src/Microsoft.AspNet.Hosting/project.json b/src/Microsoft.AspNet.Hosting/project.json
index d77f6393d3..40bc831099 100644
--- a/src/Microsoft.AspNet.Hosting/project.json
+++ b/src/Microsoft.AspNet.Hosting/project.json
@@ -18,7 +18,7 @@
         "System.ComponentModel": "4.0.0.0",
         "System.Console": "4.0.0.0",
         "System.Diagnostics.Debug": "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.Runtime": "4.0.20.0",