Vokoun spent only one season with the Capitals and is set to become an unrestricted free agent on July 1. He was signed last summer as one of several veterans pegged help the team win its first Stanley Cup.
But Vokoun hurt his groin late in the season and sat out the playoffs. With the emergence of Braden Holtby in the postseason, the Capitals are set at goalie with Holtby and Michal Neuvirth.
The 35-year-old Vokoun finished with a record of 25-17-2 and a .917 save percentage in 48 games for Capitals. He has also played for Montreal, Nashville and Florida in his NHL career.