diff --git a/src/Microsoft.AspNet.Server.WebListener/project.json b/src/Microsoft.AspNet.Server.WebListener/project.json
index a53dd12983..4296fd3058 100644
--- a/src/Microsoft.AspNet.Server.WebListener/project.json
+++ b/src/Microsoft.AspNet.Server.WebListener/project.json
@@ -26,9 +26,10 @@
         "System.Resources.ResourceManager": "4.0.0.0",
         "System.Runtime": "4.0.20.0",
         "System.Runtime.Extensions": "4.0.10.0",
-        "System.Runtime.InteropServices": "4.0.10.0",
+        "System.Runtime.InteropServices": "4.0.20.0",
+        "System.Runtime.Handles":  "4.0.0.0",
         "System.Security.Principal": "4.0.0.0",
-        "System.Text.Encoding": "4.0.10.0",
+        "System.Text.Encoding": "4.0.20.0",
         "System.Text.Encoding.Extensions": "4.0.10.0",
         "System.Threading": "4.0.0.0",
         "System.Threading.Overlapped": "4.0.0.0",