diff --git a/examples/watchtower/docker-compose.yml b/examples/watchtower/docker-compose.yml
index a5b6ed6..d4bea0d 100644
--- a/examples/watchtower/docker-compose.yml
+++ b/examples/watchtower/docker-compose.yml
@@ -5,12 +5,13 @@ services:
     container_name: watchtower
     hostname: watchtower
     environment:
-      #- WATCHTOWER_NOTIFICATION_EMAIL_SERVER_PORT=587
-      #- WATCHTOWER_NOTIFICATION_EMAIL_SERVER_USER=watchtower@example.com
-      #- WATCHTOWER_NOTIFICATION_EMAIL_SERVER_PASSWORD=MyStrongSmtpLoginPassword
-      #- WATCHTOWER_NOTIFICATION_EMAIL_FROM=watchtower@example.com
-      #- WATCHTOWER_NOTIFICATION_EMAIL_TO=john.doe@example.com
-      #- WATCHTOWER_NOTIFICATION_EMAIL_SERVER=smtp.google.com
+      #- WATCHTOWER_NOTIFICATION_EMAIL_SERVER_PORT=${SMTP_PORT:-587}
+      #- WATCHTOWER_NOTIFICATION_EMAIL_SERVER_USER=${SMTP_USER:-smtpuser}
+      #- WATCHTOWER_NOTIFICATION_EMAIL_SERVER_PASSWORD=${SMTP_PASS:-smtppass}
+      #- WATCHTOWER_NOTIFICATION_EMAIL_FROM=${SMTP_MAIL_FROM:-watchtower@example.com}
+      #- WATCHTOWER_NOTIFICATION_EMAIL_TO=${SMTP_MAIL_TO:-watchtower@example.com}
+      #- WATCHTOWER_NOTIFICATION_EMAIL_SERVER=${SMTP_SERVER:-smtp.google.com}
+      #- WATCHTOWER_HTTP_API_TOKEN=${API_TOKEN:-SecureApiToken}
       #- WATCHTOWER_NOTIFICATIONS=email
       #- WATCHTOWER_MONITOR_ONLY=true
       - WATCHTOWER_SCHEDULE=0 0 6 * * * # requires a go cron syntax of 6 space-separated fields; see https://containrrr.dev/watchtower/arguments/#scheduling