fastapi-users/docs/migration/3x_to_4x.md

3.x.x ➡️ 4.x.x

expires_at property in OAuthAccount is now optional

Before 4.x.x, the expires_at property in OAuthAccount model was mandatory. It was causing issues with some services that don't have such expiration property.

If you use SQLAlchemy or Tortoise databases adapters, you'll have to make a migration to update your database schema.