diff --git a/files/apts/horizon b/files/apts/horizon
index 53bddf098d..2161ccd361 100644
--- a/files/apts/horizon
+++ b/files/apts/horizon
@@ -21,3 +21,4 @@ python-coverage
 python-cherrypy3 # why?
 python-migrate
 nodejs
+python-netaddr
diff --git a/files/rpms/horizon b/files/rpms/horizon
index 5e3682085f..12f75ba5a8 100644
--- a/files/rpms/horizon
+++ b/files/rpms/horizon
@@ -15,6 +15,7 @@ python-httplib2
 python-kombu
 python-migrate
 python-mox
+python-netaddr
 python-nose
 python-paste
 python-paste-deploy