diff --git a/.cvsignore b/.cvsignore
index 71eb2d0..9c9c007 100644
--- a/.cvsignore
+++ b/.cvsignore
@@ -1 +1 @@
-m4-1.4.13.tar.bz2
+m4-1.4.13.tar.xz
diff --git a/m4.spec b/m4.spec
index 75cc766..08ad431 100644
--- a/m4.spec
+++ b/m4.spec
@@ -1,10 +1,10 @@
 Summary: The GNU macro processor
 Name: m4
 Version: 1.4.13
-Release: 2%{?dist}
+Release: 3%{?dist}
 License: GPLv3+
 Group: Applications/Text
-Source: http://ftp.gnu.org/gnu/m4/m4-%{version}.tar.bz2
+Source: http://ftp.gnu.org/gnu/m4/m4-%{version}.tar.xz
 URL: http://www.gnu.org/software/m4/
 Buildroot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 Requires(post): /sbin/install-info
@@ -55,6 +55,9 @@ fi
 rm -rf $RPM_BUILD_ROOT
 
 %changelog
+* Wed Aug 12 2009 Ville Skyttä <ville.skytta@iki.fi> - 1.4.13-3
+- Use xz compressed upstream tarball.
+
 * Sat Jul 25 2009 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 1.4.13-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_12_Mass_Rebuild
 
diff --git a/sources b/sources
index 424664b..7d3dca3 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-28f9ccd3ac4da45409251008b911d677  m4-1.4.13.tar.bz2
+206b13cb45e95cd2ba60bf401900ab2d  m4-1.4.13.tar.xz