diff --git a/inventory/group_vars/busgateway b/inventory/group_vars/busgateway
index 1bc5320d8e..e2415895e9 100644
--- a/inventory/group_vars/busgateway
+++ b/inventory/group_vars/busgateway
@@ -10,6 +10,7 @@ num_cpus: 2
 tcp_ports: [
     3999,  # The fedmsg-relay republishes here.  Listeners need to connect.
     9941,  # The fedmsg-relay listens here.  Ephemeral producers connect.
+    3998,  # The fedmsg-relay listens here.  VPN producers connect.
     9940,  # The fedmsg-gateway republishes here.  Proxies need to connect.
     9919,  # The websocket server publishes here.  Proxies need to connect.
 ]