Chicago Fire was picked up for a seventh season.
Original cast members Jesse Spencer, Taylor Kinney, Eamonn Walker, Monica Raymund and David Eigenberg had six-year contracts that expired at the end of the current season.
They approached leads Spencer and Kinney about new deals. Both signed one-year extensions for the upcoming seventh season.
Neither of the other three actors, Walker, Raymund or Eigenberg had been offered new contracts.
Speculation that Raymund, may not continue on the series beyond her original contract.