West Ham have secured Ben Johnson to a new deal to 2024.
West Ham have taken up a two-year option in his contract, says the London Evening Standard.
Johnson's deal was set to expire at the end of the campaign and talks had been held over a potential fresh contract, but the club have elected to take up the additional two-year option which will see the academy graduate's wage rise this summer.
The full-back has established himself as a first-team figure this season and excelled for a spell earlier in the campaign during an injury to first-choice right-back Vladimir Coufal.
During that run in the side the 22-year-old shone in victories over Tottenham, Liverpool and Chelsea.
That run of form drew attention from outside of West Ham. London rivals Arsenal and Tottenham have both kept a keen eye on his development, with Liverpool also impressed by his performance against them in West Ham's 3-2 victory at London Stadium.