Get posts only from current calendar week

I'm building a weekly leaderboard and trying to display posts from on the current calendar week Monday to Sunday. I've tried the code below, but it's only retrieving a post from today (Tuesday 1st January) and no posts from the day before (Monday 31st December). Any ideas? Thanks!

$args = array(
    'date_query' = array(
        array(
            'year' = date( 'Y' ),
             'week' = date( 'W' ),
        ),
    ),
    'post_type' = 'ride', 'posts_per_page' = 99, 'order' = 'DEC',
);
$leaders = new WP_Query( $args );