diff --git a/websocket-sharp/Net/CookieException.cs b/websocket-sharp/Net/CookieException.cs
index 9111efef..e6a94284 100644
--- a/websocket-sharp/Net/CookieException.cs
+++ b/websocket-sharp/Net/CookieException.cs
@@ -7,7 +7,7 @@
  *
  * The MIT License
  *
- * Copyright (c) 2012-2014 sta.blockhead
+ * Copyright (c) 2012-2019 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