The Hawks have signed Jordan Simpson to ease their injury problems.
The Forest Green Rovers midfielder arrives at Westleigh Park on a month's loan.
Lee Bradbury is without midfield duo Brian Stock and West Fogden for today's National League trip to Harrogate.
Both limped out of Wednesday's 2-1 win over Aldershot.
Simpson goes straight into the Hawks’ squad to face the league leaders.
The 19-year-old is the son of ex-Pompey midfielder Fitzroy Simpson.
He graduated through Swindon's academy before signing a two-year deal at Forest Green in 2017.