Boro's pre-season will conclude with a friendly match against AJ Auxerre at the Riverside.
Michael Carrick's side are to host the French outfit in a 3pm kick-off on Saturday 29 July - the last weekend before the new Sky Bet Championship campaign gets underway.
Auxerre, managed by Christophe Pélissier, will be targeting promotion from Ligue 2 next season after suffering relegation from the French top flight in agonising fashion on the final day in 2022/23.
Boro have often enjoyed a friendly test against opposition from across the channel - winning 2-0 against Marseille a year ago and drawing 1-1 with Saint-Étienne on the same weekend back in 2019.
Ticket information for the match will be confirmed in the coming weeks.