Pompey have added a clash with Charlton to their pre-season schedule.
The Blues will entertain the Addicks at Fratton Park on Saturday, July 20 (3pm).
Chris Powell’s side have had a decent first season in the Championship after gaining promotion from League One, and are currently five points off the play-offs.
Pompey will travel to take on the Hawks on July 9 and will go to Nyewood Lane to meet Bognor on July 13 (2pm).
They also travel to take on Braintree on July 16 (7.45pm).