Long term guest

[Daniel Pena]

Hey BP, I wanted to get some input on how to handle a situation I have with my rental. Last month my tenant told me that they were going to have a guest staying with them for a few days and I said that was fine. Today my tenant called me and said that their friend needs to stay for 6mo to a year and proceeded to give me a story on why and said they would be helping her with the rent. My question is do I need to update the lease to add them and possibly increase the rent? The tenant is in their second year with me and are ok tenants, they pay rent late but always pay the late fee (never more than a week or two late).