diff --git a/compose.nextcloud-talk-hpb.yml b/compose.nextcloud-talk-hpb.yml
index ad77b8d..cb4748d 100644
--- a/compose.nextcloud-talk-hpb.yml
+++ b/compose.nextcloud-talk-hpb.yml
@@ -4,5 +4,6 @@ services:
     environment:
       - NEXTCLOUD_TALK_HPB_ENABLED
     ports:
-      - "3478:3478"
       - "3478:3478/udp"
+      # note (Apfelwurm): see https://github.com/docker/compose/issues/7627
+      - "3477-3479:3477-3479/tcp"
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