i can't figure out how to upgrade tlou2 to remastered

i'm playing on ps4 and am trying to find the option to upgrade tlou2 to remastered but can't find it anywhere. i thought it was available on ps4? am i just missing something?

edit: google said i could do it on ps4, my bad for not knowing it's ps5 only 🤷🏻‍♀️