diff --git a/src/base/cl_free.cc b/src/base/cl_free.cc
index c335765..30444da 100644
--- a/src/base/cl_free.cc
+++ b/src/base/cl_free.cc
@@ -33,7 +33,7 @@ void cl_free_heap_object (cl_heap* pointer)
 
 static const char * copyright_notice[] = {
   "                                                                    \n"
-  "Copyright (c) Bruno Haible 1988-2000                                \n"
+  "Copyright (c) Bruno Haible 1988-2001                                \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"