diff --git a/include/nana/gui/widgets/group.hpp b/include/nana/gui/widgets/group.hpp
index 8507c555..46a15e20 100644
--- a/include/nana/gui/widgets/group.hpp
+++ b/include/nana/gui/widgets/group.hpp
@@ -1,7 +1,7 @@
 /**
  *	A group widget implementation
  *	Nana C++ Library(http://www.nanaro.org)
- *	Copyright(C) 2015 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2015-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0. 
  *	(See accompanying file LICENSE_1_0.txt or copy at 
diff --git a/include/nana/gui/widgets/toolbar.hpp b/include/nana/gui/widgets/toolbar.hpp
index b3b7223e..a8684f8f 100644
--- a/include/nana/gui/widgets/toolbar.hpp
+++ b/include/nana/gui/widgets/toolbar.hpp
@@ -1,7 +1,7 @@
 /**
  *	A Toolbar Implementation
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2003-2016 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0. 
  *	(See accompanying file LICENSE_1_0.txt or copy at 
diff --git a/source/gui/widgets/group.cpp b/source/gui/widgets/group.cpp
index aedb110f..74475099 100644
--- a/source/gui/widgets/group.cpp
+++ b/source/gui/widgets/group.cpp
@@ -1,7 +1,7 @@
 /**
  *	A group widget implementation
  *	Nana C++ Library(http://www.nanaro.org)
- *	Copyright(C) 2015-2017 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2015-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0. 
  *	(See accompanying file LICENSE_1_0.txt or copy at 
diff --git a/source/gui/widgets/toolbar.cpp b/source/gui/widgets/toolbar.cpp
index 7fb927cc..95f064f1 100644
--- a/source/gui/widgets/toolbar.cpp
+++ b/source/gui/widgets/toolbar.cpp
@@ -1,7 +1,7 @@
 /*
  *	A Toolbar Implementation
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2003-2017 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0.
  *	(See accompanying file LICENSE_1_0.txt or copy at