UFC officials announced the news via Twitter. Dodson (15-6) was already a replacement for Jorgensen's initial opponent, Ian McCall, who withdrew in late October due to injury.
A third replacement opponent for Jorgensen (14-7) is expected to be announced shortly.
The No. 7 ranked UFC bantamweight, Jorgensen, 31, hopes for a successful fresh start at flyweight after dropping three of his previous four contests, all against top-ranked opposition Renan Barao, Eddie Wineland and Urijah Faber.
UFC on FOX 9 takes place December 14, 2013 at the Sleep Train Arena in Sacramento, CA.
An updated UFC on FOX 9 fight card can be seen below.
Scott Jorgensen vs. TBA
Joe Lauzon vs. Mac Danzig
Edson Barboza vs. Danny Castillo
Court McGee vs. Ryan LaFlare
Pat Healy vs. Bobby Green
Abel Trujillo vs. Roger Bowling
Cody McKenzie vs. Sam Stout
Darren Uyenoyama vs. Alp Ozkilic