diff --git a/websocket-sharp/Net/HttpStatusCode.cs b/websocket-sharp/Net/HttpStatusCode.cs
index c543cc31..b773a496 100644
--- a/websocket-sharp/Net/HttpStatusCode.cs
+++ b/websocket-sharp/Net/HttpStatusCode.cs
@@ -14,7 +14,7 @@
  * The MIT License
  *
  * Copyright (c) 2001 Ximian, Inc. (http://www.ximian.com)
- * Copyright (c) 2012-2014 sta.blockhead
+ * Copyright (c) 2012-2020 sta.blockhead
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal