Code to Disable WordPress Core Updates

/* Disable WordPress Core Updates */
define( 'WP_AUTO_UPDATE_CORE', false );

To disable updates for WordPress core, add this code to your wp-config.php file in public_html directory.

You can still find options within WordPress to enable plugin and theme updates. Above code does not control plugin and theme updates. If you want to disable theme and plugin updates completely, use this Code to Completely Disable Automatic Updates in WordPress.