Matrix Integration Stopped Loading

After a recent update I’ve started seeing this in my logs:

Setup failed for custom integration ‘matrix’: Unable to import component: cannot import name ‘save_json’ from ‘homeassistant.util.json’ (/usr/src/homeassistant/homeassistant/util/json.py)

and all my Matrix automation are broken. Does anyone have any idea what’s going on? Thanks!

Do. ot have the integration myself, but saw this a while back. Maybe related?