James McArthur, James Tomkins, Jordan Ayew and Nathaniel Clyne have signed one-year extensions at Crystal Palace.
Former Scotland midfielder McArthur, 34, joined Palace from Wigan in 2014 for a then-club record £7m and has made 249 appearances for the club.
Ghana forward Ayew, 30, joined from Swansea in 2018, initially on loan, while youth product Clyne, 31, returned to the club in 2020.
The quartet have made a combined 677 appearances for Palace, with Tomkins contributing 124, Ayew 133 and right-back Clyne 171.
"It remains of pivotal importance to get the right balance of youth and experience in any Premier League squad," said Palace chairman Steve Parish.