Allowing S3 images with npm helmet

Question

I am getting this error when I use helmet Refused to load the image '<URL>' because it violates the following Content Security Policy directive: "img-src 'self' data:". which makes sense, I am violating the CSP that helmet implements.

I've been able to find in this:

app.use(
  helmet({
    contentSecurityPolicy: false,
  })
);

which does allow my images to render, but I still want the CSP that the helmet provides. I just need to essentially whitelist my S3 link but I can't find anything in their docs on this topic.