The Kangaroos confirmed first-round pick Harry Sheezel had re-signed with the club on Tuesday, with the small forward recommitting to the club until 2026.
On Thursday the club revealed Bergman has followed suit, adding a further two years to his own contract to be locked in to the Roos until the end of 2025.
“We are rapt to have an up-and-coming player like Miller commit to the club for a further two seasons,” North Melbourne talent manager Brady Rawlings said in a club statement.
“During his time at Arden St, Miller has impressed with his professional attitude, willingness to learn and composure with the ball.
“We look forward to watching him continue his development at the club over the next couple of years.”
Bergman joined North Melbourne as the 38th overall pick in the 2021 National Draft.
A shoulder injury on debut in Round 7 last year saw Bergman's first season in the AFL cut short, with season-ending surgery sidelining the 20-year-old for the remainder of the year.
North Melbourne will make the trip to Western Australia this week to face Fremantle at Optus Stadium on Saturday night.