diff --git a/scripts/upgrade b/scripts/upgrade
index 1f058b6..7f7d563 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -71,6 +71,12 @@ if ynh_legacy_permissions_exists; then
 	ynh_app_setting_delete --app=$app --key=is_public
 fi
 
+# If update doesn't exist, create it
+if [ -z "$update" ]; then
+	update=1
+	ynh_app_setting_set --app=$app --key=update --value=$update
+fi
+
 #=================================================
 # CREATE DEDICATED USER
 #=================================================