Advisor asking to cite his works in my thesis. Not sure if the right thing to do I am currently writing my thesis, and so far I've mentioned some well known related artcles focusing on a certain family of methods. My advisor has also published a similiar work, which is not influential or as diverse compared to other methods - the work also focuses more on utilization aspect rather than benchmark one.

My advisor wants me to mention his work - I feel it would be a little out of place in my thesis, unless I mention some older not necessarily state-of-the-art methods. What should I do?

EDIT: I forgot to mention that this is a master thesis. Aside from that, what feels wrong to me is not having a choice to comply or not with the request and treating citations as a currency. It's a small thing, but if it weren't my advisor I would probably refuse.
You are working on that subject because your advisor has worked on sth. similar, aren't you. His mentoring will have been based on that work. By not mentioning it you would be hiding valuable information from the reader.