The Big Bang Theory Season 10 star Kaley Cuoco has hinted of the possible future of the show.

Everyone wants The Big Bang Theory to last forever. However, Cuoco admitted that extending the hit comedy show to another season could be very expensive for a lot of people. The actress was referring to the cast salary.

Cuoco’s contract as well as that of the other major cast members are all set to expire after Season 10 in 2017. The show’s executives are currently on salary negotiations with them. There have been reports that the cast is asking for pay raises before signing new deals.

At present, Cuoco, Jim Parsons and Johnny Galecki are earning $1 million each per episode. Simon Helberg and Kunal Nayyar, on the other hand, have around $750,000 per episode each. Mayim Bialik and Melissa Rauch have an income of almost $100,000 each per episode.

Entertainment Weekly cited Cuoco’s recent appearance on Jimmy Kimmel Live where Cuoco was asked by Kimmel if she thought 10 seasons were enough. The actress nodded with a laugh. “It’s a lot of hair. That’s a lot of denim sizes. I went from like hot to like 30 [years old]. The guys look exactly the same. I’m the only one that’s changed. They’ve worn the same t-shirts this entire time,” she said.

Cuoco has been playing the role of Penny since the The Big Bang Theory Season debuted in 2007. Parsons (Sheldon), Galecki (Leonard), Helberg (Howard) and Nayyar’s (Raj) are also among the original cast of the CBS show. Bialik (Amy) and Rauch (Bernadette) first appeared in Season 3 and became regulars in Season 4.

CBS chief Glenn Geller, meanwhile, remains optimistic that The Big Bang Theory Season 10 will not be the last for the show. Showrunner Steve Molaro also admitted that that the TBBT will be different and weird even if only one of his cast members decides not to renew his or her contract.

The Big Bang Theory Season 10 premiere airs on Sept. 19 at 8 p.m. ET on CBS.

Stay tuned here to find out if The Big Bang Theory Season 10 cast will sign new contracts.