diff --git a/src/Microsoft.Framework.WebEncoders.Core/project.json b/src/Microsoft.Framework.WebEncoders.Core/project.json
index d2d4b85976..7cee739e6e 100644
--- a/src/Microsoft.Framework.WebEncoders.Core/project.json
+++ b/src/Microsoft.Framework.WebEncoders.Core/project.json
@@ -16,12 +16,12 @@
         "dnx451": { },
         "dnxcore50": {
             "dependencies": {
-                "System.ComponentModel": "4.0.0-*",
-                "System.Diagnostics.Debug": "4.0.10-*",
-                "System.IO": "4.0.10-*",
+                "System.ComponentModel": "4.0.1-beta-*",
+                "System.Diagnostics.Debug": "4.0.11-beta-*",
+                "System.IO": "4.0.11-beta-*",
                 "System.Reflection": "4.0.10-*",
-                "System.Runtime.Extensions": "4.0.10-*",
-                "System.Threading": "4.0.10-*"
+                "System.Runtime.Extensions": "4.0.11-beta-*",
+                "System.Threading": "4.0.11-beta-*"
             }
         }
     }