As an engineer, part of your responsibility is to foresee this type of thing. Software that does exactly what it should, and is free of defects for it's immediate use case, has no need to be continually updated. As each line is adding more functionality you do not need.

Even if you're trying to keep things rolling forward and buy into taking in updates anyway; you don't do it in such a way as to cause it to leak to production until you are good and certain there is no potential for breakage. If you haven't learned this yet, give a monorepo a try. I assure you, you will be divested of any naivete in this regard.