def downgrade():
    # ### commands auto generated by Alembic - please adjust! ###
    op.alter_column('users', 'expiry_ts', new_column_name='expiry_date')
    op.alter_column('users', 'joining_ts', new_column_name='joining_date')
    op.alter_column('users', 'last_login_ts', new_column_name='last_login_date')