Squeaky windscreen wipers

Transit connect 2021.

Drivers side windscreen wiper is squeaky as hell! Doesn't sound much but it genuinely hurts my ears and squeaks on every wipe. Ive tried new blade and the windscreen is definitely clean. Wd40 on the blade works temporarily but I don't want to keep doing that. It looks as though the blade catches on the windscreen and doesn't quite run smoothly over the glass.