Remove WordPress Version Number From Footer

/**
 * Remove the version number in the footer except for Admins
 */
add_action( 'admin_menu', 'l7w_my_footer_shh' );
function l7w_my_footer_shh() {
    if ( ! current_user_can('manage_options') ) { // 'update_core' may be more appropriate
        remove_filter( 'update_footer', 'core_update_footer' ); 
    }
}