diff --git a/caddy/docker-compose.yml b/caddy/docker-compose.yml
index 4f3e6fa..e1f250b 100644
--- a/caddy/docker-compose.yml
+++ b/caddy/docker-compose.yml
@@ -15,6 +15,7 @@ services:
       - mail_network
     volumes:
       - $PWD/Caddyfile:/etc/caddy/Caddyfile
+      - $PWD/mail_certs:/etc/caddy/mail_certs
       - $PWD/email_autodiscover:/etc/caddy/email_autodiscover
       - $PWD/email.mobileconfig.tpl:/etc/caddy/email.mobileconfig.tpl
       - $PWD/email-setup:/var/www/email-setup