Accurate star ratings for widgets (to decimal-point)

We have an actual star rating of around 4.5, but our widget always says 5 stars. The entire point of displaying overall star ratings on our website is to build trust, and the way to do that is through full transparency. Therefore I think it's essential that we get the option to display our overall star ratings in widgets at the level od one decimal point. e.g 4.1, 4.2 etc. Thanks for considering