Do you have a "carné de extranjeria"? If so, be aware that Migrations is actively applying fines to those who do not update personal information, such as address, foreign passport number (if you renew) employer and marital status, within 30 days of the change. The fine is 42 soles per month,per item.
Here is a little more background:
Residents should note that the photo, biometric data, address, marriage status, employer, among others, must be updated before the National Superintendence of Immigration; according to Article 47° of the Rules of Procedure of the Immigration Law - passed by Supreme Decree N° 007-2017-IN:
"Artícle 47°.- Updates on the Foreign ID Card
47.1. Foreigners who have been issued a Foreign ID Card must update the photo, biometric data, their address of residence, marriage status, employer info, info of their educational and/or religious institution, and all other information which may have changed, within 30 calendar days after the change took place.
47.2. Not complying with the aforementioned shall be met with sanctions."
"Article 190°.- Sanctions and/or fines levied against foreigners
Foreigners shall be subject to fines should they commit the following infractions: (...)
c) Not updating the info contained in their Foreign ID Card. The fine shall be equivalent to 1% of one Tax Unit (PEN 4,200 for 2019) for each month the info is not updated."
(thanks to RGB Avocats for taking the time to write this note)