diff --git a/doc/PRE_UPGRADE.md b/doc/PRE_UPGRADE.md
new file mode 100644
index 0000000..5bbce58
--- /dev/null
+++ b/doc/PRE_UPGRADE.md
@@ -0,0 +1,2 @@
+n8n deprecated MySQL and MariaDB as backend databases in version 0.227.0. n8n recommends using PostgreSQL.
+This upgrade does not convert the database MySQL to PostgreSQL.
\ No newline at end of file
diff --git a/scripts/upgrade b/scripts/upgrade
index ff31e45..d2a4fa3 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -80,7 +80,7 @@ ynh_script_progression --message="Installing $app..." --weight=2
 # Download, check integrity, uncompress and patch the source from app.src
 pushd $install_dir
  	ynh_use_nodejs
- 	ynh_exec_warn_less sudo -u $app env $ynh_node_load_PATH $ynh_npm update n8n@${n8n_version}
+ 	ynh_exec_warn_less sudo -u $app env $ynh_node_load_PATH $ynh_npm install n8n@${n8n_version}
 popd
 
 #=================================================