bentching

Question

REcently got married and I want to know the following. In bentching, I used to say "harachaman hu yivarech is avi mori..." "NOw i started to say "osi ves ishti", when eating at my own home. I want to know if I can continue to say the harachaman that includes my parents as well. essentally, making it into one long harachaman? thanx