diff --git a/ChangeLog b/ChangeLog
index 0e2f5f0..31b8f93 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2023-12-30  Bruno Haible  <bruno@clisp.org>
+
+	Switch to autoconf 2.72.
+	* autogen.sh: Update comment.
+
 2023-09-18  Bruno Haible  <bruno@clisp.org>
 
 	Fix shared library support on Android.
diff --git a/autogen.sh b/autogen.sh
index 8b228d7..9955a48 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -4,7 +4,7 @@
 # also regenerates all aclocal.m4, config.h.in, Makefile.in, configure files
 # with new versions of autoconf or automake.
 #
-# This script requires autoconf-2.63..2.71 and automake-1.11..1.16 in the PATH.
+# This script requires autoconf-2.63..2.72 and automake-1.11..1.16 in the PATH.
 # It also requires
 #   - the gperf program.