diff --git a/ChangeLog b/ChangeLog
index 403c59e..1d82508 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2023-12-30  Bruno Haible  <bruno@clisp.org>
+
+	Mark autoconf 2.72 as supported.
+	* autogen.sh: Update comment.
+
 2023-09-07  Bruno Haible  <bruno@clisp.org>
 
 	Fix "make extracheck" failure (regression 2016-11-27).
diff --git a/autogen.sh b/autogen.sh
index 3cd1367..9bc320b 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -4,9 +4,9 @@
 # also regenerates all config.h.in, configure files with new versions of
 # autoconf.
 #
-# This script requires autoconf-2.64..2.71 in the PATH.
+# This script requires autoconf-2.64..2.72 in the PATH.
 
-# Copyright (C) 2003-2022 Free Software Foundation, Inc.
+# Copyright (C) 2003-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by