Prevent update check for specific theme

I’m working on a custom theme that lives in /var/www/html/wp-content/themes/custom/. It’s for internal use, so it doesn’t matter if there’s a theme with the same name on the wordpress site.

But wordpress performs an update check, finds a theme with the same name, which has a newer version number, and so asks me to upgrade.

Is there a way to suppress this behavior without renaming my theme and without fiddling with version numbers? I don’t want the check to be performed at all.

(BTW define('AUTOMATIC_UPDATER_DISABLED', true) doesn’t help.)

Yes, you can disable auto update by adding this line of code in your wp-config.php file:

define( 'WP_AUTO_UPDATE_CORE', false );

OR Disable automatic WordPress theme updates by adding the following filters in your functions.php

add_filter( 'auto_update_theme', '__return_false' );