How to add spouse to I-485?

Hello all,
I am preparing for my I-485 and I want to add my spouse to the application. She was not in my I-140 because we were not married at that time. Do I need to update my I-140? What is the exact procedure? Anyone knows?

to organicgoose161:

Hello,
You just need to file I-485s together. Make sure to include your marriage certificate.