Any hopes Red Bull Racing had of seeing its power deficit improve in the short term were just squashed by Renault Sport F1 boss Cyril Abiteboul.
The Milton Keynes-based outfit has struggled this season to remain in the wake of rivals Ferrari and Mercedes.
But substantial aerodynamic work on its RB13 has seen the chassis considerably improve lately although its performance remains limited by a Renault engine which still isn't measuring up to its Italian and German counterparts.
Red Bull was pinning its hopes on a power unit upgrade in Baku, but Abiteboul insists that there will only be incremental updates in the near future.
"It was Red Bull who said that there would be an upgrade [in Baku]," Abiteboul said in an interview published on the official Formula 1 website.
"There are upgrades permanently - every single race we are making some small improvements.
"Last year we created a huge expectation and we came with an upgrade that had a big impact. But we can’t repeat that every year.
"Now it is all about constant improvements which overall will make a difference - but there is no magic bullet.
"Every race the engine will become more and more reliable with the program on the dyno progressing.
"Frankly the next big upgrade will be next year. Then we will have a completely new concept. That will make a difference - but as I said 2018."
Want to win a trackday experience? All you have to do is subscribe to our FREE newsletter HERE
Gallery: All the pictures from Montreal
Keep up to date with all the F1 news via Facebook and Twitter
Aston Martin’s first F1 car designed under the guidance of Adrian Newey made a belated…
Michael Schumacher’s first taste of Formula 1 glory has just changed hands – and while…
Pierre Gasly celebrates his 30th birthday today, the Frenchman heading into his ninth full season…
Red Bull Racing is officially done with nostalgia. As the 2026 F1 season dawns, the…
After sampling the 2026 machinery during last week’s Barcelona shakedown, Lando Norris is left with…
Kimi Antonelli believes Formula 1’s sweeping 2026 regulation overhaul will force drivers into a new…