diff --git a/alerta.conf.tmpl b/alerta.conf.tmpl
index 1ad228d..7a80b30 100644
--- a/alerta.conf.tmpl
+++ b/alerta.conf.tmpl
@@ -13,7 +13,7 @@ config_file = /app/alerta.conf
 dashboard_url = https://{{ env "DOMAIN" }}
 debug = {{ env "DEBUG" }}
 email_type = text
-endpoint = http://localhost:8080/api
+endpoint = http://web:8080/api
 key = {{ secret "mailer_api_key" }}
 mail_from = {{ env "MAIL_FROM" }}
 mail_template = /app/email.tmpl