Veterans Gianluigi Buffon and Giorgio Chiellini have extended their Juventus contracts until 2021.
The new deals, long expected to be confirmed by Juve, mean that former Italy captain Buffon will stay with the Turin-based club beyond his 43rd birthday.
Juventus currently sit at the top of Serie A, four points clear of second-placed Lazio.
"There are players who need no introduction,” Juventus said on a statement published on the club website on Monday. “Champions whose story speaks for itself, and whose connection with the shirt they wear is indissoluble.
“Examples on the pitch and in the locker room, leaders, driving forces, bearers of the Bianconeri DNA, who wear it as a second skin.
“Gianluigi Buffon. Giorgio Chiellini. Captains, legends. Bianconeri since the beginning. Bianconeri forever. And to confirm it, in case there is a need, today their contract renewals have become official, for another: 2021!”
Buffon returned to Juve last summer after a disappointing season at Paris Saint-Germain and is the club's all-time record Serie A appearance maker, turning out 479 times in the league since arriving in 2001.
With Juventus he has won the league nine times but his only European trophy came when he lifted the Uefa Cup with Parma in 1999.
He is Serie A's joint record appearance holder with Paolo Maldini, playing in Italy's top-flight 647 times, and also holds the appearance record for his national team, with 176 caps between 1997-2018, winning the 2006 World Cup.
He has made 13 appearances in all competitions this season, with Wojciech Szczesny now Juve's first-choice keeper.
The 35-year-old Chiellini, who succeeded Buffon as Juve and Italy captain, joined the club in 2005 and has since become a stalwart in one of the Turin giants' most successful periods.
He has won eight league titles and four Italian Cups, although he has missed most of this season due to a cruciate ligament injury suffered in August.
