Outsourcing companies ask you to update your resume, which means they want you to update your existing resume. This usually means that they have made a preliminary screening of your resume and want you to provide more detailed, accurate and up-to-date information.

Updating your resume is to ensure that it is consistent with your current career development and work experience. This will help outsourcing companies better understand your skills, experience and education, so as to match the most suitable job opportunities for you.

When the outsourcing company requests to update your resume, you may need to provide the following information:

1. The latest contact information, such as address, telephone number and email address.

2. Recent work experience, including position, responsibilities and achievements.

3. The latest educational background, including degree, major and school name.

4. The latest professional skills and certificates.

Updating your resume is an opportunity to improve the quality and attractiveness of your resume, so you should carefully review and update your resume to ensure that it accurately reflects your ability and experience. If you are not sure how to update your resume, you can refer to a professional resume template or seek the help of employment consulting services.