diff --git a/komodo/automate/bambuddy/compose.yaml b/komodo/automate/bambuddy/compose.yaml
index bf8f11b..cfd2de5 100644
--- a/komodo/automate/bambuddy/compose.yaml
+++ b/komodo/automate/bambuddy/compose.yaml
@@ -12,6 +12,7 @@ services:
       - DATABASE_URL=postgresql://${PG_USER:-bambuddy}:${PG_PASS:?database password required}@postgres:5432/bambuddy
       - TRUSTED_FRAME_ORIGINS=http://homeassistant.local:8123
       - BAMBUDDY_EXTERNAL_ROOTS=/external/nas
+      - PORT=8870
     restart: unless-stopped
     # Docker SIGKILLs after 10s by default. Bambuddy stops well inside that,
     # but the headroom means a slow teardown (several virtual printers on a Pi)