diff --git a/docker-compose.yml b/docker-compose.yml
index dd9ba50..21cd14b 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -51,6 +51,14 @@ services:
     env_file: .env
     environment:
       DB_HOST: db
+      # Pin the bot's own listen port. Both services share env_file: .env, so
+      # without this the site's PORT=3000 leaks in and the bot binds 3000 instead
+      # of 4100 — then the server's BOT_INTERNAL_URL (http://bot:4100) can't reach
+      # it ("failed to fetch" in the admin panel). Must match that URL's port.
+      PORT: 4100
+      # Likewise override the log filename so the bot doesn't inherit the site's
+      # LOG_FILE and write into app.log — keep the bot's log distinct.
+      LOG_FILE: bot.log
       # Internal config fetch goes to the app's UNPUBLISHED internal port (3001),
       # not the public 3000. Keep the port in sync with the app's INTERNAL_PORT.
       SITE_INTERNAL_URL: http://app:3001/internal/bot-config