Most recent version of WPMU DEV Dashboard

Hi,
I am currently a member and I have installed wpmu dev dashboard version 4.0.8 but my dashboard says there is an update to 4.0.9. I have only installed this one time and that was quite awhile ago and I have never done an update on this.

So my questions are: How do I access WPMU DEV Dashboard version 4.0.9 and once I have it how to I do the upgrade?

Thanks very much for your halp,

Barbara DiLucchio