The Big Bang Theory stars Jim ParsonsJohnny Galecki and Kaley Cuoco-Sweeting have secured new contracts with Warner Bros. Television that includes bonuses, production deals, a larger percentage of syndication earnings and paychecks of around $1 million per episode, according to 

Production of the upcoming season eight which was scheduled to start production in July, was delayed by contract negotiations. , According to Deadline, the new production start date for season eight will be tomorrow, August 6.

Deadline says the contracts are in the "Friends salary territory, scoring paychecks of $1 million per episode for the 72 episodes the show is slated to produce in seasons eight, nine and ten."  The trio previously earned a reported $325,000 per episode.

Co-stars Mayim Bialik and Melissa Rauch, who weren't initially series regulars, have already agreed to new deals with Warner Bros. Television.

Kunal Nayyar and Simon Helberg have yet to sign on the dotted line.

The Big Bang Theory will return to CBS on September 22 with an hour-long premiere.