diff --git a/content/treestyletab/license.txt b/content/treestyletab/license.txt
index 62dcd4b1..c35e8f13 100644
--- a/content/treestyletab/license.txt
+++ b/content/treestyletab/license.txt
@@ -14,7 +14,7 @@ License.
 The Original Code is the Tree Style Tab.
 
 The Initial Developer of the Original Code is YUKI "Piro" Hiroshi.
-Portions created by the Initial Developer are Copyright (C) 2007-2014
+Portions created by the Initial Developer are Copyright (C) 2007-2016
 the Initial Developer. All Rights Reserved.
 
 Contributor(s): YUKI "Piro" Hiroshi <piro.outsider.reflex@gmail.com>
diff --git a/skin/classic/treestyletab/license.txt b/skin/classic/treestyletab/license.txt
index 6f14a298..023b08af 100644
--- a/skin/classic/treestyletab/license.txt
+++ b/skin/classic/treestyletab/license.txt
@@ -14,7 +14,7 @@ License.
 The Original Code is the Tree Style Tab.
 
 The Initial Developer of the Original Code is YUKI "Piro" Hiroshi.
-Portions created by the Initial Developer are Copyright (C) 2007-2013
+Portions created by the Initial Developer are Copyright (C) 2007-2016
 the Initial Developer. All Rights Reserved.
 
 Contributor(s): YUKI "Piro" Hiroshi <piro.outsider.reflex@gmail.com>