I'm having issues with the react Datepicker component.  Everything works fine from the component itself, however, I am unable to update the value of the date from a different function or other external method.  For example, I'm putting in a dropdown that will allow me to select ranges such as 'last week, or last 30 days' and am calculating the dates myself.  I call setState and update the correct state (startDate) but the Datepicker component does not register the change.  I also put in a label just to show the state as well and it does update, so I'm positive the change is taking place, but the picker itself will not actually update the value in the input box.  The console is not showing any warning or errors.  Any suggestions?

<DatePicker
    format='MM-DD-YYYY'
    keyboard
    value={this.state.endDate}
    getValue={ (evt) => this.setState({endDate: evt})}
    mask={[/\d/, /\d/,'-', /\d/, /\d/,'-', /\d/, /\d/ , /\d/, /\d/]}
    label="End Date" />