diff --git a/compose.yml b/compose.yml
index bc7f69e..8842a84 100644
--- a/compose.yml
+++ b/compose.yml
@@ -24,6 +24,7 @@ services:
       - MAIL_FROM_ADDRESS
       - MAIL_DOMAIN
       - SMTP_AUTHTYPE=PLAIN
+      - OVERWRITEPROTOCOL=https
     volumes:
       - nextcloud:/var/www/html/
       - nextapps:/var/www/html/custom_apps:cached