diff -r b124189728c7 -r b5a1068f6843 components/desktop/firefox/Makefile
--- a/components/desktop/firefox/Makefile	Sun Oct 23 21:19:26 2016 -0700
+++ b/components/desktop/firefox/Makefile	Fri Oct 28 14:57:30 2016 -0700
@@ -200,7 +200,9 @@
 REQUIRED_PACKAGES += library/desktop/gdk-pixbuf
 REQUIRED_PACKAGES += library/desktop/gtk2
 REQUIRED_PACKAGES += library/desktop/pango
+REQUIRED_PACKAGES += library/desktop/startup-notification
 REQUIRED_PACKAGES += library/glib2
+# Remove once all build machines have library/desktop/startup-notification:
 REQUIRED_PACKAGES += library/gnome/gnome-libs
 REQUIRED_PACKAGES += library/graphics/pixman
 REQUIRED_PACKAGES += library/libevent