updated 04/04/2014 AT 8:00 AM ET
•originally published 04/04/2014 AT 8:50 AM ET
The Transcendence actor joked about declaring his departure from acting but said Letterman’s imminent sign-off stole his thunder.
Instead, Depp gushed about his engagement to actress Amber Heard and the unconventional ring he was wearing.
“I have a female engagement ring,” Depp shared. “It was too big for my girl.”