Greg Eden's late try, coupled with Michael Dobson's conversion, gave Hull KR the narrowest of victories over Catalan Dragons in Super League.
Full-back Eden landed a hat-trick in a win that puts the Robins within two points of the fifth-placed French side.
Josh Hodgson also crossed for Hull KR, while the home team touched down through Kevin Larroyer, Morgan Escare and Vincent Duport twice.
Craig Sandercock's men have now won their last three consecutive games.
But they were forced to leave it late in a hectic finish in Toulouse, where the lead changed hands three times in the final 15 minutes.
Hull KR started well, Eden notching his first after five minutes and Hodgson adding his contribution moments later, with Dobson converting both.
However, Larroyer, Escare and Duport all crossed without reply, with the visitors fortunate that Thomas Bosc failed in all three of his conversion attempts.
Bosc did succeed a drop goal before the break and added from the tee an hour in, only for Eden to run in his second on 67 minutes.
Duport's try and then Bosc's conversion with eight minutes remaining looked to be enough, but 22-year-old Eden secured a memorable win.
Catalans: Escare, Blanch, Duport, Millard, Vaccari, Pryce, Bosc, Simon, Henderson, Casty, Menzies, Larroyer, Mounis
Substitutes: Dureau, Pelissier, Fakir, Paea
Hull KR: Eden, Hodgson, Gleeson, Salter, Hall, Burns, Dobson, Paea, Hodgson, Walker, Paterson, Lovegrove, Mika
Substitutes: Tuimavave, Horne, Carlile, Netherton
Referee: Tim Roby