diff --git a/cmdparse.c b/cmdparse.c
index b65fd2f..b3f14de 100644
--- a/cmdparse.c
+++ b/cmdparse.c
@@ -3,7 +3,7 @@
 
  **********************************************************************
  * Copyright (C) Richard P. Curnow  1997-2003
- * Copyright (C) Miroslav Lichvar  2013-2014
+ * Copyright (C) Miroslav Lichvar  2013-2014, 2016
  * 
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of version 2 of the GNU General Public License as
diff --git a/ntp_sources.c b/ntp_sources.c
index 8dacc99..dbd4748 100644
--- a/ntp_sources.c
+++ b/ntp_sources.c
@@ -3,7 +3,7 @@
 
  **********************************************************************
  * Copyright (C) Richard P. Curnow  1997-2003
- * Copyright (C) Miroslav Lichvar  2011-2012, 2014
+ * Copyright (C) Miroslav Lichvar  2011-2012, 2014, 2016
  * 
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of version 2 of the GNU General Public License as
diff --git a/reference.c b/reference.c
index 19857fb..4f4ced5 100644
--- a/reference.c
+++ b/reference.c
@@ -3,7 +3,7 @@
 
  **********************************************************************
  * Copyright (C) Richard P. Curnow  1997-2003
- * Copyright (C) Miroslav Lichvar  2009-2015
+ * Copyright (C) Miroslav Lichvar  2009-2016
  * 
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of version 2 of the GNU General Public License as