diff --git a/host-pottwal.yml b/host-pottwal.yml
index 67ade80..d426e06 100644
--- a/host-pottwal.yml
+++ b/host-pottwal.yml
@@ -454,6 +454,7 @@
           MYSQL_DATABASE: "{{ redmine_database }}"
         volumes:
           - "{{ data_dir }}/redmine/mysql:/var/lib/mysql"
+          - "{{ data_dir }}/redmine/mysql-config:/etc/mysql/conf.d"
         networks:
           - name: redminenet
       tags: