diff --git a/.cvsignore b/.cvsignore
index 3ac35ce..c52ed89 100644
--- a/.cvsignore
+++ b/.cvsignore
@@ -1 +1 @@
-lash-0.5.3.tar.gz
+lash-0.5.4.tar.gz
diff --git a/lash.spec b/lash.spec
index 6b6d1c2..8078e8a 100644
--- a/lash.spec
+++ b/lash.spec
@@ -2,8 +2,8 @@
 
 Summary:      LASH Audio Session Handler
 Name:         lash
-Version:      0.5.3
-Release:      4%{?dist}
+Version:      0.5.4
+Release:      1%{?dist}
 License:      GPLv2+
 Group:        System Environment/Libraries
 URL:          http://www.nongnu.org/lash/
@@ -51,7 +51,7 @@ Development files for the LASH library.
 %patch0 -p0
 
 %build
-%configure --disable-static --disable-serv-inst --disable-pylash
+CFLAGS="$RPM_OPT_FLAGS -D_POSIX_SOURCE" %configure --disable-static --disable-serv-inst --disable-pylash
 make %{?_smp_mflags}
 
 %install
@@ -147,8 +147,8 @@ fi
 # %{python_sitearch}/*lash*.pyo
 
 %changelog
-* Mon Feb 18 2008 Fedora Release Engineering <rel-eng@fedoraproject.org> - 0.5.3-4
-- Autorebuild for GCC 4.3
+* Thu Feb 28 2008 Anthony Green <green@redhat.com> 0.5.4-1
+- Upgrade to 0.5.4.  Force build with _POSIX_SOURCE.
 
 * Mon Oct 08 2007 Anthony Green <green@redhat.com> 0.5.3-3
 - Disable pylash until we can figure out how to install it properly.
diff --git a/sources b/sources
index 27559b7..a86c396 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-a9ed9f839a191ba7fd4b376b9cb24f31  lash-0.5.3.tar.gz
+8eeb7e91f9127d7d9fc6ec076cbe14ed  lash-0.5.4.tar.gz