diff --git a/.env.sample b/.env.sample
index 3db56ad..35c6faa 100644
--- a/.env.sample
+++ b/.env.sample
@@ -4,6 +4,8 @@ SECRET_RESTIC_PASSWORD_VERSION=v1
 
 COMPOSE_FILE=compose.yml
 
+DOMAIN=backup-bot-two.example.com
+
 RESTIC_REPOSITORY=/backups/restic
 
 CRON_SCHEDULE='30 3 * * *'