Send to fediverse avatar modification

[husim0]

Hello,
I already follow an account on my rss-to-activitypub instance. Then I decided to change the avatar of the account (it was blank), updating the "actor" field in "accounts". But it's not changed on Pleroma nor Mastodon.
I think avatar's modifications are never sent to Fediverse so my Pleroma instance can't know that the avatar has changed.
If it's not too hard work would it be possible to implement it ?
Thank you @dariusk, I use everyday your amazing piece of software. It was something I wanted for a long time without being able to tell how to do it properly (nor be able to develop it) and then you did it !