Tailwind on Valet

I put this in Mix though I have no idea what's actually happening.

I just got a new Macbook so I thought I'd set up Valet and give it a twirl.

I have an app with custom Tailwind fonts like so:

const defaultTheme = require('tailwindcss/defaultTheme')

module.exports = {
  theme: {
    extend: {
        fontFamily: {
            sans: ["Montserrat", ...defaultTheme.fontFamily.sans],
            ui: "Inter var",
            logo: "Asmiyati",
        },
        fontSize: {
            '7xl': '6rem',
            '8xl': '8rem',
        },
        colors: {
            ceru: {
                100: '#E6F8FC',
                200: '#BFECF8',
                300: '#99E1F3',
                400: '#4DCBEB',
                500: '#00B4E2',
                600: '#00A2CB',
                700: '#006C88',
                800: '#005166',
                900: '#003644',
            },
            cyan: {
                100: "#b2ebf2",
                200: "#80deea",
                300: "#4dd0e1",
                400: "#26c6da",
                500: "#00bcd4",
                600: "#00acc1",
                700: "#0097a7",
                800: "#00838f",
                900: "#006064"
            },
            facebook: '#3b5999',
            twitter: '#55acee',
            github: '#959da5',
        },
    }
  },
  variants: {
    'shadowOutline': ['focus'],
  },
  plugins: [
    require('@tailwindcss/custom-forms'),
    require('tailwindcss-shadow-outline-colors')(),
    require('@tailwindcss/typography'),
  ],
  future: {
    removeDeprecatedGapUtilities: true,
    purgeLayersByDefault: true,
  }
}

I have purgeCss running only on production. I'm importing Monserrat from Google, and Inter from CDN and have a local instance of Asmiyati.

When I run mix I end up with all my chosen fonts overridden.

But only on Valet, in Homestead it works as expected.

Anybody know what's goin on?