diff --git a/autoconf.spec b/autoconf.spec
index 939b208..dead55e 100644
--- a/autoconf.spec
+++ b/autoconf.spec
@@ -1,5 +1,5 @@
 Name:          autoconf
-Version:       2.71
+Version:       2.72
 Release:       1mamba
 Epoch:         1
 Summary:       A GNU tool for automatically configuring source code
@@ -8,7 +8,7 @@ Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
 URL:           http://www.gnu.org/software/autoconf/
-Source:        ftp://ftp.gnu.org/gnu/autoconf/%{name}-%{version}.tar.xz
+Source:        https://ftp.gnu.org/gnu/autoconf/%{name}-%{version}.tar.xz
 License:       GPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: libperl
@@ -25,7 +25,6 @@ Requires:      perl
 Requires:      autoconf-archive
 Requires:      ac-archive
 BuildArch:     noarch
-BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
 GNU's Autoconf is a tool for configuring source code and Makefiles.
@@ -49,6 +48,7 @@ Note that the Autoconf package is not required for the end user who may be confi
 
 # conflicts with same file (but more recent) from binutils-2.14
 rm -f %{buildroot}%{_infodir}/standards.info
+rm -f %{buildroot}%{_infodir}/dir
 
 %clean
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
@@ -73,6 +73,7 @@ exit 0
 %dir %{_datadir}/autoconf/build-aux
 %{_datadir}/autoconf/build-aux/*
 %{_datadir}/autoconf/m4sugar/*
+%{_datadir}/autoconf/version.m4
 %{_datadir}/emacs/site-lisp/*
 %{_infodir}/autoconf.*
 %{_mandir}/man1/*
@@ -80,6 +81,9 @@ exit 0
 #ChangeLog BUGS NEWS README THANKS TODO
 
 %changelog
+* Sat Dec 23 2023 Automatic Build System <autodist@mambasoft.it> 2.72-1mamba
+- automatic version update by autodist
+
 * Fri Jan 29 2021 Automatic Build System <autodist@mambasoft.it> 2.71-1mamba
 - automatic version update by autodist