diff --git a/avahi.spec b/avahi.spec
index 19d3721..769a470 100644
--- a/avahi.spec
+++ b/avahi.spec
@@ -6,7 +6,7 @@ Group:          System Environment/Base
 License:        LGPL
 URL:            http://avahi.org
 BuildRoot:	%{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
-BuildRequires:  doxygen, gtk2-devel, qt-devel, libglade2-devel, libdaemon-devel, glib-devel, libcap-devel, dbus-devel, expat-devel, python, dbus-python, gdbm-devel, mono-devel
+BuildRequires:  doxygen, gtk2-devel, qt-devel, libglade2-devel, libdaemon-devel, glib-devel, libcap-devel, dbus-devel, expat-devel, python, dbus-python, gdbm-devel, mono-devel >= 1.1.13
 Requires:       dbus, libdaemon, expat, python, dbus-python, libcap
 Obsoletes:	howl, howl-libs
 Source0:        %{name}-%{version}.tar.gz
@@ -79,7 +79,7 @@ necessary for developing programs using avahi with Qt3.
 Summary:   Mono language bindings for avahi mono development
 Group: 	   Development/Libraries
 Requires:  %{name}-devel = %{version}
-Requires:  mono-core >= 1.1.12
+Requires:  mono-core >= 1.1.13
 
 %description sharp
 The avahi-sharp package contains the files needed to develop