The 22-year-old joined Sydney as a rookie selection in 2018 from the club's NEAFL Academy and was elevated to the Swans' senior list last year.
Wicks was among a bevy of young Swans to show great potential this season, joining fellow Swans Academy graduates Braden Campbell and Errol Gulden in having strong campaigns in the Harbour City.
Speaking on the announcement, Wicks stated he "couldn't be happier" to recommit to the Bloods for another season.
"I think we have a really exciting group of boys who can possibly do something special in the next few years," Wicks said.
"I was always planning to re-sign with Sydney. I obviously grew up here so I am really happy living here and I am excited to put pen to paper for the next two years.
"It's pretty special to be able to play for the team your barracked for growing up and I've been here (at the Sydney Swans) all my life so I couldn't be happier."
The Swans have enjoyed a strong season of re-signings this year, with Joel Amartey (2023), Nick Blakey (2024), Braeden Campbell (2025), Robbie Fox (2022), Will Gould (2022), Josh P. Kennedy (2022), Tom McCartin (2023), Hayden McLean (2023), Colin O'Riordan (2022), Luke Parker (2025), James Rowbottom (2024), Marc Sheather (2023), Callum Sinclair (2022), Dylan Stephens (2023), Chad Warner (2023) all inking new deals in 2021.
Wicks has played 29 for Sydney since making his debut against Collingwood in 2020.