Damage pets usually have high HP. Therefore you may want to sacrifice damage in your weapon or ring for more armor and HP. You will net 200-300 more HP with a minimal loss and/or gain in damage and/or armor.

The best net upgrade without switching multiple things around is to get an archon ring of potency (lvl36 is fine, it has nearly the same stats as a lvl41). It is the best ring, besides arcane, for warriors.