diff --git a/zmq.hpp b/zmq.hpp
index 745f7f46..da0ffa1b 100644
--- a/zmq.hpp
+++ b/zmq.hpp
@@ -1,4 +1,5 @@
 /*
+    Copyright (c) 2016-2017 ZeroMQ community
     Copyright (c) 2009-2011 250bpm s.r.o.
     Copyright (c) 2011 Botond Ballo
     Copyright (c) 2007-2009 iMatix Corporation
diff --git a/zmq_addon.hpp b/zmq_addon.hpp
index 4acf85f0..21accf0c 100644
--- a/zmq_addon.hpp
+++ b/zmq_addon.hpp
@@ -1,4 +1,5 @@
 /*
+    Copyright (c) 2016-2017 ZeroMQ community
     Copyright (c) 2016 VOCA AS / Harald Nøkland
 
     Permission is hereby granted, free of charge, to any person obtaining a copy