diff --git a/autoconf.spec b/autoconf.spec
index a3ab8cc..5332937 100644
--- a/autoconf.spec
+++ b/autoconf.spec
@@ -1,17 +1,17 @@
 Summary:    A GNU tool for automatically configuring source code
 Name:       autoconf
 Version:    2.61
-Release:    9%{?dist}
+Release:    10%{?dist}
 License:    GPLv2+ and GFDL
 Group:      Development/Tools
 Source:     http://ftp.gnu.org/gnu/autoconf/autoconf-%{version}.tar.bz2
 Source1:    filter-provides-automake.sh
 Source2:    filter-requires-automake.sh
 URL:        http://www.gnu.org/software/autoconf/
-BuildRequires:      m4, emacs
+BuildRequires:      m4 >= 1.4.7, emacs
+Requires:           m4 >= 1.4.7, mktemp, imake, grep
 Requires(post):     /sbin/install-info
 Requires(preun):    /sbin/install-info
-Requires:           m4, mktemp, imake, grep
 BuildArch: noarch
 BuildRoot:  %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 
@@ -79,6 +79,9 @@ fi
 %doc AUTHORS COPYING ChangeLog NEWS README THANKS TODO
 
 %changelog
+* Mon Oct 29 2007 Stepan Kasal <skasal@redhat.com> 2.61-10
+- require m4 >= 1.4.7
+
 * Wed Aug 08 2007 Karsten Hopp <karsten@redhat.com> 2.61-9
 - update license tag