diff --git a/license.txt b/license.txt
index 8dfa685..14ec89f 100644
--- a/license.txt
+++ b/license.txt
@@ -1,4 +1,4 @@
-Copyright 2018 Kiyoshi Aman
+Copyright 2018 Kiyoshi Aman, Gideon Zhi
 
 Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.