Projects in a Turborepo monorepo not using workspace package.json config

Hello,

I have a very simple XO configuration I'd like to share between all the packages and apps in my Turborepo monorepo:

"xo": {
  "prettier": true,
  "rules": {
    "import/extensions": 0
  }
}

The project README states that I should just need one version of this in the root package.json file:

• https://github.com/xojs/xo#monorepo

However, I'm seeing linting errors in each of my packages if I don't have this XO config in every package.json. Have I configured something incorrectly?