All de_json methods should be @classmethod, not @staticmethod. Because almost everywhere inside of them you can see something like this:

    @staticmethod
    def de_json(data, bot):
        ...
        return Update(**data)

Instead of:

    @classmethod
    def de_json(cls, data, bot):
        ...
        return cls(**data)

1. Did you have any valuable reasons to do so?
2. If not, I can change this and open PR. Do you want me to do this?