How to set borderRadius on a react-native modal?

I have a react-native Modal, I would like to render it with rounded corners like this:

but if I define it like this:

<Modal
       style={{
                borderTopLeftRadius: 10,
                borderTopRightRadius: 10,
                overflow: 'hidden',
            }}

nothing happens (at least on Android). I also tried to wrap the Modal with a View with the same style but with no more success.

What am I doing wrong?