diff --git a/compose.mariadb.yml b/compose.mariadb.yml
index 94557af..d972845 100644
--- a/compose.mariadb.yml
+++ b/compose.mariadb.yml
@@ -17,6 +17,7 @@ services:
       - MYSQL_ROOT_PASSWORD_FILE=/run/secrets/db_root_password
       - MAX_DB_CONNECTIONS=${MAX_DB_CONNECTIONS:-100}
       - INNODB_BUFFER_POOL_SIZE=${INNODB_BUFFER_POOL_SIZE:-1G}"
+      - MARIADB_AUTO_UPGRADE=1
     configs:
       - source: my_tune
         target: /etc/mysql/conf.d/my-tune.cnf