Do Automatic Updates

do-update.php

<?php
/*
Plugin Name: Do Automatic Updates
Plugin URI:
Description: Do automatic updates on everything; themes, plugins, translations and core (both minor and major updates).
Author: Anna Johansson
Version: 1
Author URI: http://annalinneajohansson.com
*/

add_filter( 'allow_major_auto_core_updates', '__return_true' );
add_filter( 'allow_minor_auto_core_updates', '__return_true' );
add_filter( 'auto_update_translation', '__return_true' );
add_filter( 'auto_update_plugin', '__return_true' );
add_filter( 'auto_update_theme', '__return_true' );