new_contents: # -*- coding: utf-8 -*-
  from __future__ import unicode_literals
  
  from django.db import models, migrations
  import django.core.validators
  
  
  class Migration(migrations.Migration):
  
      dependencies = [
          ('services', '0023_merge'),
      ]
  
      operations = [
          migrations.AlterField(
              model_name='provider',
              name='phone_number',
              field=models.CharField(max_length=20, validators=[django.core.validators.RegexValidator('^\\d{2}-\\d{6}$')], verbose_name='phone number'),
              preserve_default=True,
          ),
      ]
  
subject: Add needed migration