def upgrade():
    # ### commands auto generated by Alembic - please adjust! ###
    op.add_column('settings', sa.Column('omise_live_public', sa.String(), nullable=True))
    op.add_column('settings', sa.Column('omise_live_secret', sa.String(), nullable=True))
    op.add_column('settings', sa.Column('omise_mode', sa.String(), nullable=True))