London Broncos will play their on the road home game against Warrington at Gillingham’s Priestfield Stadium in June.
Last season, the Broncos took two games away from Twickenham Stoop, including their game against Hull to Gillingham, which attracted a crowd above their season average.
Chief executive Gus Mackay said: “We are pleased to be taking the game back to Gillingham to build on last season’s on the road game at the Priestfield stadium.
“We hope that this year’s game will attract an even bigger attendance and that we attract further supporters from Kent.
“The club continues to strive for new audiences and spread the game to new people in the south east.”
A crowd of 3930 turned up for last May’s game against Hull, which ended in a 14-12 defeat.
Gillingham FC chairman Paul Scally added: “I am delighted that we are able to welcome the London Broncos back to Priestfield next summer. It will be a great sporting occasion and I hope that as many Kent Rugby fans as possible will turn out to support them.”