The 17-year-old wonderkid has put pen to paper on a deal that will keep him with the Catalan club until 2031 after establishing himself as one of the world's top young players.
A statement from Barcelona read: "FC Barcelona and Lamine Yamal have reached an agreement for the renewal of his contract which will now tie him to the club until 30 June 2031.
"The player signed his new contract on Tuesday (27.05.25) at the club’s offices in the presence of FC Barcelona president Joan Laporta, first vice president Rafa Yusta, and the club’s sporting director Anderson Luis de Souza 'Deco', amongst others.
"A contract extension for Lamine Yamal is another demonstration of the solidity of the current Barca project. The Barca forward made his debut for the first team on 29 April 2023, at the age of just 15 and since then, the lad from Mataro near Barcelona has exploded on to the stage that is world football with performances that are already part of FC Barcelona history."
Yamal doesn't turn 18 until July but has contributed 18 goals and 16 assists in all competitions in a season that has seen Barca win a domestic treble, although he has played down comparisons with club icon Lionel Messi.
The teenager - who also starred for Spain in their victorious Euro 2024 campaign - said: "I don't compare myself to him, because I don't compare myself to anyone, and much less with Messi.
"We are thinking about improving ourselves, every day, and on being better on the next day.
"So I don't think the comparison makes sense, with Messi even less, I'm going to enjoy myself, and be myself.
"I admire him obviously, as the best player in history, but I don't compare myself to him."