diff --git a/src/Microsoft.AspNet.Server.Kestrel/project.json b/src/Microsoft.AspNet.Server.Kestrel/project.json
index 84771e2c53..b9318104e7 100644
--- a/src/Microsoft.AspNet.Server.Kestrel/project.json
+++ b/src/Microsoft.AspNet.Server.Kestrel/project.json
@@ -20,7 +20,7 @@
                 "System.Diagnostics.Debug": "4.0.10.0",
                 "System.Threading.Thread": "4.0.0.0",
                 "System.Diagnostics.TraceSource": "4.0.0.0",
-                "System.Text.Encoding": "4.0.20.0",
+                "System.Text.Encoding": "4.0.10.0",
                 "System.Threading.Tasks": "4.0.10.0",
                 "System.Diagnostics.Tracing": "4.0.10.0",
                 "System.Collections": "4.0.10.0",