Marquinhos has committed to a new contract at Paris Saint-Germain through to 2022, ending any suggestion that he could leave the club.
The Brazilian defender had seen his future called into question amid reports of interest from the likes of Manchester United.
The 23-year-old has, however, agreed fresh terms in the French capital and is looking forward to chasing down more silverware with the Ligue 1 heavyweights.
Marquinhos told the club’s official website after putting pen to paper: “I have always said I'm happy to play for Paris Saint-Germain, and this contract extension is further proof of my commitment to the club.
"I feel very good at this club and with this group of players whom I am with every day.
“I have found here the perfect place to flourish and hope to win many more trophies.
“Over the last four years, I have been able to gauge the progress made at Paris Saint-Germain, which has notably enabled me to get into the national team.
“I'm really looking forward to starting pre-season ahead of a new campaign with my team-mates and to give the best of myself so that our team continues to make our fans proud in the coming months."
— PSG Officiel (@PSG_inside) July 1, 2017
PSG chairman Nasser Al-Khelaifi added: "Marquinhos' contract extension brings me great satisfaction.
"As well as being a fantastic player, Marquinhos is an extremely nice guy and always has a great attitude.
“Since he arrived in Paris, Marquinhos has developed a very strong relationship with our club, the fans and the city whose colours we proudly wear.
“In four years, he has continually grown in our team and we have seen him become, little by little, one of the best defenders in the world, even though he is still very young.
“Marquinhos deeply believes in Paris Saint-Germain's ability to satisfy his ambitions and take him to the summit of international football."
Marquinhos joined PSG from Roma in 2013 and has made 155 appearances across his four seasons at the club, helping them to three successes apiece in Ligue 1 and the Coupe de France and four successive triumphs in the Coupe de la Ligue.