diff --git a/README b/README
index 0635e10..cab1e21 100644
--- a/README
+++ b/README
@@ -10,7 +10,7 @@ Samuel Stirtzel <s.stirtzel@googlemail.com>
 Contributors:
 Copyright 2012 - Kai Kang
 Copyright 2013 - Khem Raj
-Copyright 2012 - Koen Kooi
+Copyright 2012, 2013 - Koen Kooi
 Copyright 2012 - Robert Yang
 Copyright 2011, 2012 - Samuel Stirtzel