diff --git a/mysql-backup/compose.cbus.yml b/mysql-backup/compose.cbus.yml
index a95973c..257e2be 100644
--- a/mysql-backup/compose.cbus.yml
+++ b/mysql-backup/compose.cbus.yml
@@ -4,6 +4,7 @@ services:
     container_name: mysql-cron-backup-cbus
     volumes:
       - "${DATA_DIR:-/data}/mysql8/backup:/backup"
+      - /etc/localtime:/etc/localtime:ro
     environment:
       - MYSQL_HOST=${MYSQL_HOST:-mysql8}
       - MYSQL_PORT=${MYSQL_PORT:-3306}
diff --git a/mysql-backup/compose.maintain.yml b/mysql-backup/compose.maintain.yml
index 0d2ac59..72bf059 100644
--- a/mysql-backup/compose.maintain.yml
+++ b/mysql-backup/compose.maintain.yml
@@ -4,6 +4,7 @@ services:
     container_name: mysql-cron-backup-maintain
     volumes:
       - "${DATA_DIR:-/data}/mysql8/backup:/backup"
+      - /etc/localtime:/etc/localtime:ro
     environment:
       - MYSQL_HOST=${MYSQL_HOST:-mysql8}
       - MYSQL_PORT=${MYSQL_PORT:-3306}