Hi mojammal, you can use this plugin : wordpress.org/plugins/disable-wordpress-plugin-updates or add this line to your function.php theme file : add_filter( 'pre_site_transient_update_plugins', create_function( '$a', "return null;" ) );
Or you can just not update them. usually it shows you that there is new update for the exact plugin and you have to click on Update it now - to do that