diff --git a/COPYING b/COPYING
index b3f58c23..9ad8dbc3 100644
--- a/COPYING
+++ b/COPYING
@@ -1,4 +1,4 @@
-Copyright (c) 2017 twister Developers
+Copyright (c) 2013 - 2018 twister Developers
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/README.md b/README.md
index 97bc9d3e..a3b8e115 100644
--- a/README.md
+++ b/README.md
@@ -2,9 +2,9 @@
 
 <http://www.twister.net.co>
 
-Bitcoin Copyright (c) 2009-2013 Bitcoin Core developers  
+Bitcoin Copyright (c) 2009 - 2013 Bitcoin Core developers  
 libtorrent Copyright (c) 2003 - 2007, Arvid Norberg  
-twister Copyright (c) 2017 Miguel Freitas
+twister Copyright (c) 2013 - 2018 Miguel Freitas
 
 ## What is twister?