diff --git a/doc/cln.tex b/doc/cln.tex
index 5e47dd0..9643fec 100644
--- a/doc/cln.tex
+++ b/doc/cln.tex
@@ -34,8 +34,8 @@ This file documents @sc{cln}, a Class Library for Numbers.
 Published by Bruno Haible, @code{<haible@@clisp.cons.org>} and
 Richard B. Kreckel, @code{<kreckel@@ginac.de>}.
 
-Copyright (C)  Bruno Haible 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005.
-Copyright (C)  Richard B. Kreckel 2000, 2001, 2002, 2003, 2004, 2005.
+Copyright (C)  Bruno Haible 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006.
+Copyright (C)  Richard B. Kreckel 2000, 2001, 2002, 2003, 2004, 2005, 2006.
 
 Permission is granted to make and distribute verbatim copies of
 this manual provided the copyright notice and this permission notice
diff --git a/src/base/cl_free.cc b/src/base/cl_free.cc
index 58d9d75..95a26b8 100644
--- a/src/base/cl_free.cc
+++ b/src/base/cl_free.cc
@@ -33,8 +33,8 @@ void cl_free_heap_object (cl_heap* pointer)
 
 static const char * copyright_notice[] = {
   "                                                                    \n"
-  "Copyright (c)    Bruno Haible 1988-2005                             \n"
-  "Copyright (c) Richard Kreckel 2000-2005                             \n"
+  "Copyright (c)    Bruno Haible 1988-2006                             \n"
+  "Copyright (c) Richard Kreckel 2000-2006                             \n"
   "                                                                    \n"
   "This program is free software; you can redistribute it and/or modify\n"
   "it under the terms of the GNU General Public License as published by\n"