diff --git a/inventory/host_vars/buildvm-s390x-24.s390.fedoraproject.org b/inventory/host_vars/buildvm-s390x-24.s390.fedoraproject.org
index 0f76067027..ac747cfdec 100644
--- a/inventory/host_vars/buildvm-s390x-24.s390.fedoraproject.org
+++ b/inventory/host_vars/buildvm-s390x-24.s390.fedoraproject.org
@@ -1,2 +1,6 @@
 ---
 eth0_ipv4_ip: 10.16.0.35
+tcp_ports: [
+  # allow incoming varnish requests to varnish cache
+  80
+]