diff --git a/services.mail.yml b/services.mail.yml
index 200ac20fa0549f6c032dcebf44bafd2e9edc705d..c322ffed83c7a0b466ddc56ee59bbcec67cb115c 100644
--- a/services.mail.yml
+++ b/services.mail.yml
@@ -121,6 +121,7 @@ noise:
       port: 6897
       volumes:
         - /etc/mailman-noise: /config
+        - /etc/sso/public.key: /etc/sso/public.key
         - /var/lib/mailman-noise: /data
       env:
         DOMAIN: "{{ domain }}"