Everton youngsters Jonjoe Kenny, Mason Holgate and Dominic Calvert-Lewin have committed their long-term futures to the club by signing contract extensions.
Calvert-Lewin's deal will now run until 2023, while Kenny and Holgate signed contracts until the end of the 2021/22 season.
Everton boss Sam Allardyce said: "We're delighted that these young men have committed long-term to the club and there's no doubt in my mind that they will play big roles at Everton for a long time to come.
"The depth of young talent in our squad is very encouraging, a clear sign that we do things right as a club in our development of young players and Mason, Jonjoe and Dominic epitomise what we are trying to accomplish with young players here at Everton."