diff --git a/COPYING b/COPYING
index 0550e0d..2d3a4c8 100644
--- a/COPYING
+++ b/COPYING
@@ -1,6 +1,6 @@
 The MIT License
 
-Copyright (c) 2011, 2012 Tatsuhiro Tsujikawa
+Copyright (c) 2012 Tatsuhiro Tsujikawa
 
 Permission is hereby granted, free of charge, to any person obtaining
 a copy of this software and associated documentation files (the