The agreement was announced by MP Management, the agency representing the 19-year-old, confirming that he will continue his development in Bergamo after progressing through the club's youth system.
Idele has recently moved into the senior picture after establishing himself with Atalanta's Under-23 side. The right-back has made three first-team appearances in recent weeks, earning opportunities in both Serie A and the Conference League.
One of those outings came against Kairat Almaty on November 5, when he was named in the starting line-up for Atalanta's European fixture.
His agency announced the renewal through a social media statement, praising the defender's progress and thanking the club for its confidence in him.
“Constant growth always leads to the desired results. The contract renewal of Javison Idele with Atalanta is official,” the statement read.
“After progressing through the entire Nerazzurri youth system and making his first appearances in Serie A and the Conference League, Javison continues his journey in Bergamo.”
The new agreement represents a significant commitment from Atalanta to a player born in 2007, whose first-team involvement has increased during the current campaign.
Idele's progression has taken him from the club's academy into the Under-23 team and now the senior squad. His three recent appearances have provided an early opportunity to demonstrate his ability at a higher level.
The contract extension keeps him at Atalanta for the next five seasons, with the club securing his services through to the summer of 2031.