This is reported by NASA on Twitter.
With four astronauts aboard, the @SpaceX Crew Dragon undocked from the Harmony module's forward-facing port on the @Space_Station at 6:30 am ET.
It's relocating to the space-facing port to prepare for the arrival of the next @Commercial_Crew mission & an upcoming cargo delivery: pic.twitter.com/tQniLQ00wm
- NASA (@NASA) April 5, 2021
The crew includes NASA astronauts Michael Hopkins, Victor Glover, Shannon Walker and JAXA astronaut Soichi Noguchi.
In October, Crew Dragon docked to the ISS.