diff --git a/scripts/backup b/scripts/backup
index 3c59fcd..37a5e95 100644
--- a/scripts/backup
+++ b/scripts/backup
@@ -56,6 +56,12 @@ ynh_backup --src_path="/etc/nginx/conf.d/$domain.d/$app.conf"
 
 ynh_backup --src_path="/etc/logrotate.d/$app"
 
+#=================================================
+# BACKUP SYSTEMD
+#=================================================
+
+ynh_backup --src_path="/etc/systemd/system/$app.service"
+
 #=================================================
 # BACKUP THE POSTGRESQL DATABASE
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index 4feafd8..e1acc42 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -25,6 +25,13 @@ db_user=$db_name
 db_pwd=$(ynh_app_setting_get --app=$app --key=psqlpwd)
 port=$(ynh_app_setting_get --app=$app --key=port)
 
+#=================================================
+# CHECK VERSION
+#=================================================
+ynh_script_progression --message="Checking version..."
+
+upgrade_type=$(ynh_check_app_version_changed)
+
 #=================================================
 # BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
 #=================================================