diff --git a/gnome-system-monitor.spec b/gnome-system-monitor.spec
index 7c5f585..a66a0c3 100644
--- a/gnome-system-monitor.spec
+++ b/gnome-system-monitor.spec
@@ -1,6 +1,6 @@
 # Note that this is NOT a relocatable package
 
-%define libgtop2_version 2.19.3
+%define libgtop2_version 2.23.1
 %define libwnck_version 2.9.92
 %define pango_version 1.2.0
 %define gtk2_version 2.12
@@ -37,6 +37,7 @@ BuildRequires: librsvg2-devel
 BuildRequires: gnome-doc-utils >= 0.3.2
 BuildRequires: PolicyKit-devel >= %{polkit_version}
 BuildRequires: PolicyKit-gnome-devel >= %{polkit_gnome_version}
+BuildRequires: gnome-common
 
 # needed for autoreconf
 BuildRequires: autoconf, automake, libtool