diff --git a/docker/docker-compose.quickstart.yml b/docker/docker-compose.quickstart.yml
index 41a674916f..f750bda19b 100644
--- a/docker/docker-compose.quickstart.yml
+++ b/docker/docker-compose.quickstart.yml
@@ -33,6 +33,9 @@ services:
       PAPERCLIP_DEPLOYMENT_EXPOSURE: "private"
       # Base URL users will access the UI at
       PAPERCLIP_PUBLIC_URL: "${PAPERCLIP_PUBLIC_URL:-http://localhost:3100}"
+      # Extra hostnames the instance accepts beyond the public URL host
+      # (LAN or Tailscale aliases), comma-separated; empty means none
+      PAPERCLIP_ALLOWED_HOSTNAMES: "${PAPERCLIP_ALLOWED_HOSTNAMES:-}"
 
       # ── Required secret for session signing (generate with: openssl rand -hex 32) ──
       BETTER_AUTH_SECRET: "${BETTER_AUTH_SECRET:?BETTER_AUTH_SECRET must be set}"