diff --git a/mariadb/CHANGELOG.md b/mariadb/CHANGELOG.md
index a384b97..62a646d 100644
--- a/mariadb/CHANGELOG.md
+++ b/mariadb/CHANGELOG.md
@@ -1,4 +1,6 @@
 # Changelog
 
+**Warning**: Could be that you need delete this add-on first and lost all old data. Currently we don't support database migration on update.
+
 ## 1.0
 - Update MariaDB to 10.3.13