def METHOD_NAME():
    # Only downgrade those that can be nullable
    op.alter_column(
        "account",
        "save_raw_messages",
        server_default=sa.sql.expression.null(),
        existing_type=sa.Boolean,
        existing_server_default=sa.sql.expression.true(),
        existing_nullable=None,
    )
    op.alter_column(
        "block",
        "is_inboxapp_attachment",
        server_default=sa.sql.expression.null(),
        existing_type=sa.Boolean,
        existing_server_default=sa.sql.expression.false(),
        existing_nullable=None,
    )