diff --git a/.cvsignore b/.cvsignore
index 3609652..32dbd44 100644
--- a/.cvsignore
+++ b/.cvsignore
@@ -1 +1 @@
-autoconf-2.63.tar.bz2
+autoconf-2.63.tar.lzma
diff --git a/autoconf.spec b/autoconf.spec
index b8065d5..cf03a20 100644
--- a/autoconf.spec
+++ b/autoconf.spec
@@ -1,10 +1,10 @@
 Summary:    A GNU tool for automatically configuring source code
 Name:       autoconf
 Version:    2.63
-Release:    3%{?dist}
+Release:    4%{?dist}
 License:    GPLv2+ and GFDL
 Group:      Development/Tools
-Source:     http://ftp.gnu.org/gnu/autoconf/autoconf-%{version}.tar.bz2
+Source:     http://ftp.gnu.org/gnu/autoconf/autoconf-%{version}.tar.lzma
 Source1:    filter-provides-automake.sh
 Source2:    filter-requires-automake.sh
 URL:        http://www.gnu.org/software/autoconf/
@@ -79,6 +79,9 @@ fi
 %doc AUTHORS COPYING ChangeLog NEWS README THANKS TODO
 
 %changelog
+* Tue Aug 11 2009 Ville Skyttä <ville.skytta@iki.fi> - 2.63-4
+- Use lzma compressed upstream tarball.
+
 * Fri Jul 24 2009 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 2.63-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_12_Mass_Rebuild
 
diff --git a/sources b/sources
index df075d9..27d0523 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-7565809ed801bb5726da0631ceab3699  autoconf-2.63.tar.bz2
+670b25f8b42118d2313f7593d9d89fda  autoconf-2.63.tar.lzma