bootstrap datepicker не обновляет дату

$('#sandbox-container').datepicker({ 
  inline: true, 
  sideBySide: true, 
  startDate: new Date(), 
  format: 'dd-mm-yyyy', 
}); 
 
$('.change-date').click(function() { 
  $('#sandbox-container') 
    .datepicker('setDate', new Date('2017-01-31')) 
    .datepicker('update'); 
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> 
<script src="http://cdnjs.cloudflare.com/ajax/libs/bootstrap-datepicker/1.3.0/js/bootstrap-datepicker.js"></script> 
<link href="http://cdnjs.cloudflare.com/ajax/libs/bootstrap-datepicker/1.3.0/css/datepicker3.css" rel="stylesheet"/> 
<div id="sandbox-container"> 
</div> 
<button class="change-date">смена даты</button>