diff --git a/libappstream-glib.spec b/libappstream-glib.spec
index 9f9fde6..9827338 100644
--- a/libappstream-glib.spec
+++ b/libappstream-glib.spec
@@ -1,26 +1,31 @@
+%global glib2_version 2.45.8
+%global libsoup_version 2.51.92
+%global json_glib_version 1.1.1
+%global gdk_pixbuf_version 2.31.5
+
 Summary:   Library for AppStream metadata
 Name:      libappstream-glib
 Version:   0.5.16
-Release:   1%{?dist}
+Release:   2%{?dist}
 License:   LGPLv2+
 URL:       http://people.freedesktop.org/~hughsient/appstream-glib/
 Source0:   http://people.freedesktop.org/~hughsient/appstream-glib/releases/appstream-glib-%{version}.tar.xz
 
-BuildRequires: glib2-devel >= 2.45.8
+BuildRequires: glib2-devel >= %{glib2_version}
 BuildRequires: libtool
 BuildRequires: docbook-utils
 BuildRequires: gtk-doc
 BuildRequires: gobject-introspection-devel
 BuildRequires: gperf
 BuildRequires: libarchive-devel
-BuildRequires: libsoup-devel >= 2.51.92
-BuildRequires: gdk-pixbuf2-devel >= 2.31.5
+BuildRequires: libsoup-devel >= %{libsoup_version}
+BuildRequires: gdk-pixbuf2-devel >= %{gdk_pixbuf_version}
 BuildRequires: gtk3-devel
 BuildRequires: gettext
 BuildRequires: intltool
 BuildRequires: libgcab1-devel
 BuildRequires: libuuid-devel
-BuildRequires: json-glib-devel >= 1.1.1
+BuildRequires: json-glib-devel >= %{json_glib_version}
 
 # for the builder component
 BuildRequires: fontconfig-devel
@@ -34,6 +39,12 @@ BuildRequires: gcab
 BuildRequires: libxslt
 BuildRequires: docbook-style-xsl
 
+# Make sure we pull in the minimum required versions
+Requires: gdk-pixbuf2%{?_isa} >= %{gdk_pixbuf_version}
+Requires: glib2%{?_isa} >= %{glib2_version}
+Requires: json-glib%{?_isa} >= %{json_glib_version}
+Requires: libsoup%{?_isa} >= %{libsoup_version}
+
 # no longer required
 Obsoletes: appdata-tools < 0.1.9
 Provides: appdata-tools
@@ -138,6 +149,9 @@ make install DESTDIR=$RPM_BUILD_ROOT
 %{_datadir}/gir-1.0/AppStreamBuilder-1.0.gir
 
 %changelog
+* Fri Jul 01 2016 Kalev Lember <klember@redhat.com> 0.5.16-2
+- Set minimum required versions for dependencies
+
 * Mon Jun 13 2016 Richard Hughes <richard@hughsie.com> 0.5.16-1
 - New upstream release
 - Add elementary to list of project groups