Brewster and co-star A.J. Cook made headlines last summer after CBS axed Cook and reduced Brewster's episode count for season 6.
According to Deadline, with Brewster and Cook returning to the series, recent addition Rachel Nichols has been let go.
In December, Brewster was reportedly asked to rejoin the cast as a full series regular, but she turned down the deal to do the comedy pilot 'My Life as an Experiment.' However, NBC passed on the pilot.
Last year, news of Brewster's reduced deal and Cook's dismissal sparked fan protest. Viewers took to the web and started Twitter campaigns and petitions.
After fan outcry, Cook returned to wrap up her character's story. Later in the season she made an appearance to help shepherd Brewster's character off the crime drama.
Brewster has been with the series since its second season. She plays foreign language expert Emily Prentiss.
With Cook and Brewster returning and Shemar Moore recently signing a new deal, the only loose end for 'Criminal Minds' is Thomas Gibson. The 'Dharma and Greg' veteran is still in talks with CBS. Deadline reports he received a warm reception from international buyers at recent screenings, so a deal is likely.
Are you happy Paget Brewster is staying on 'Criminal Minds'?