I'm creating a custom User model based on AbstractUser:

from django.contrib.auth.models import AbstractUser
from django.db import models


class User(AbstractUser):
    certs_only: models.BooleanField()

When I run manage.py makemigrations, the migrations are created, but the certs_only field isn't there. All other fields from AbstractUser are there, eg password, last_login, etc. I see this migration in 0001_initial.py. This field also doesn't show up in the admin site, since it doesn't actually exist.

I've tried ./manage.py makemigrations common, as some suggested ('common' is my app name), but this made no difference. I've also tried adding fields of different types, but this seems to happen regardless.

What could be causing this?