diff --git a/sox.spec b/sox.spec
index f70ea45..20a033f 100644
--- a/sox.spec
+++ b/sox.spec
@@ -1,7 +1,7 @@
 Summary: A general purpose sound file conversion tool
 Name: sox
 Version: 13.0.0
-Release: 1
+Release: 2
 License: GPL
 Group: Applications/Multimedia
 Source: http://prdownloads.sourceforge.net/sox/sox-%{version}.tar.gz
@@ -9,6 +9,7 @@ Patch1: sox-12.18.1-multilib.patch
 URL: http://sox.sourceforge.net/
 BuildRequires: libvorbis-devel
 BuildRequires: alsa-lib-devel
+BuildRequires: gsm-devel
 Buildroot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 
 %description
@@ -63,6 +64,11 @@ rm -rf $RPM_BUILD_ROOT
 %{_mandir}/man3/*
 
 %changelog
+* Mon Jul 16 2007 Jiri Moskovcak <jmoskovc@redhat.com> 13.0.0-2
+- uses external libgsm instead of local copy
+- spec file update: added BuildRequires: gsm-devel
+- Resolves: #239955
+
 * Mon Feb 26 2007 Thomas Woerner <twoerner@redhat.com> 13.0.0-1
 - new version 13.0.0
 - spec file cleanup (#227429)