diff --git a/docker-compose.master.yml b/docker-compose.master.yml
index 5202b79..8d21706 100644
--- a/docker-compose.master.yml
+++ b/docker-compose.master.yml
@@ -78,6 +78,7 @@ services:
 
 volumes:
   mariadb_data:
+  mariadb_config:
 
 networks:
   pdns_network:
diff --git a/docker-compose.slave.yml b/docker-compose.slave.yml
index 5e0c3e0..787baf7 100644
--- a/docker-compose.slave.yml
+++ b/docker-compose.slave.yml
@@ -55,6 +55,7 @@ services:
 
 volumes:
   mariadb_data:
+  mariadb_config:
 
 networks:
   pdns_network: