Negotiations are underway to renew “The Big Bang Theory” for two more seasons, but one stumbling block standing in the way is the salary demands of stars Melissa Rauch and Mayim Bialik, who earn significantly less than the rest of the cast.

As Variety reports, Bialik (who plays neurobiologist Amy Farrah Fowler) and Rauch (Bernadette Rostenkowski-Wolowitz) were brought on during the third season and made series regulars in season four, and their paycheques have lagged behind the rest of the cast, who are among the highest-paid actors on television.

While the rest of the cast earn a whopping $1 million per episode, Rauch and Bialik reportedly earn salaries in the $200,000-per-episode range.

RELATED: Jim Parsons Shuts Down ‘The Big Bang Theory’ Fan Theories

But in an extraordinary show of camaraderie, Variety cites numerous sources who claim that stars Jim Parsons, Johnny Galecki, Kaley Cuoco, Kunal Nayyar and Simon Helberg have each agreed to take a $100,000-per-episode pay cut in order to pay for raises for their co-stars.

As a result, this $500,000 per episode will be split between the two actresses to bring their salaries up to approximately $450,000 an episode, while also ensuring that the #1 sitcom on television remains on CBS for two more seasons.

As Variety reports, “there is optimism at both the studio and the network that a deal will get done.”