diff --git a/inventory/group_vars/busgateway b/inventory/group_vars/busgateway
index 73bf89868c..c19172c6a2 100644
--- a/inventory/group_vars/busgateway
+++ b/inventory/group_vars/busgateway
@@ -9,6 +9,7 @@ num_cpus: 2
 
 tcp_ports: [
     3999,  # The fedmsg-relay republishes here.  Listeners need to connect.
+    9941,  # The fedmsg-relay listens here.  Ephemeral producers connect.
     9940,  # The fedmsg-gateway republishes here.  Proxies need to connect.
 ]
 
diff --git a/inventory/group_vars/busgateway-stg b/inventory/group_vars/busgateway-stg
index 091de920ae..af3a8c4d38 100644
--- a/inventory/group_vars/busgateway-stg
+++ b/inventory/group_vars/busgateway-stg
@@ -9,6 +9,7 @@ num_cpus: 1
 
 tcp_ports: [
     3999,  # The fedmsg-relay republishes here.  Listeners need to connect.
+    9941,  # The fedmsg-relay listens here.  Ephemeral producers connect.
     9940,  # The fedmsg-gateway republishes here.  Proxies need to connect.
 ]