Pompey have been drawn away to Forest Green in the first round of the Carabao Cup.
The tie will be played at The New Lawn in the week commencing August 7.
Pompey faced the Gloucestershire outfit for the first time last season, winning 1-0 in both League One contests.
Rovers – who are managed by Duncan Ferguson – finished bottom of the table to make an immediate return to the fourth tier.
The match will give latest summer signing Ben Stevenson an immediate chance to face his former clubs.
Goals from Joe Pigott, Ronan Curtis and Colby Bishop ensured the Blues knocked Championship side Cardiff out at this stage of the competition in south Wales last season.
A confirmed date for the game and ticket information will be announced in due course.
| Carabao Cup Round One – Southern Section |
| Plymouth Argyle v Leyton Orient |
| Forest Green Rovers v POMPEY |
| Swansea City v Northampton Town |
| Exeter City v Crawley Town |
| Ipswich Town v Bristol Rovers |
| Newport County v Charlton Athletic |
| Stevenage v Watford |
| Cheltenham Town v Birmingham City |
| Sutton United v Cambridge United |
| Milton Keynes Dons v Wycombe Wanderers |
| Millwall v Reading |
| AFC Wimbledon v Coventry City |
| Bristol City v Oxford United |
| Gillingham v Southampton |
| Queens Park Rangers v Norwich City |
| Peterborough United v Swindon Town |
| Cardiff City v Colchester United |
| Carabao Cup Round One – Northern Section |
| Notts County v Lincoln City |
| Bolton Wanderers v Barrow |
| Hull City v Doncaster Rovers |
| Mansfield Town v Grimsby Town |
| Stoke City v West Bromwich Albion |
| Sheffield Wednesday v Stockport County |
| Leeds United v Shrewsbury Town |
| Preston North End v Salford City |
| Rotherham United v Morecambe |
| Harrogate Town v Carlisle United |
| Burton Albion v Leicester City |
| Accrington Stanley v Bradford City |
| Derby County v Blackpool |
| Port Vale v Fleetwood Town |
| Barnsley v Tranmere Rovers |
| Blackburn Rovers v Walsall |
| Huddersfield Town v Middlesbrough |
| Wrexham v Wigan Athletic |
| Sunderland v Crewe Alexandra |