Eminem and Dr. Dre could be reuniting for “Old Time’s Sake” yet again.

Allen Hughes — who directed HBO’s “The Defiant Ones” docuseries on Dre and Jimmy Iovine — recently revealed that Slim Shady and his mentor are back in the lab together.

“People don’t know this,” he told Uproxx. “Dre records every day. Literally, he’s in there recording songs every day. He’s like Picasso in that way. He’s always painting. Right now he’s producing, in the 11th hour, a track for Eminem’s latest album. So Dre’s still real active in music.”

Dre signed Marshall Mathers, who appears in “The Defiant Ones,” and he’s worked with the MC throughout his career, both as a fellow artist and as a producer. Together, the duo has crafted tracks like “Forgot About Dre,” “I Need a Doctor,” “What’s the Difference,” “Crack a Bottle,” “Guilty Conscience,” “Bitch Please II,” “and “Hell Breaks Loose.”

Eminem’s next album will be his first since 2013’s The Marshall Mathers LP 2, which was executive produced by Dr. Dre and Rick Rubin. But Dre isn’t the only one working with Em on new music. Recently, 2 Chainz also revealed that he collaborated with Slim Shady on a track for the Detroit spitter’s new album.

In October of 2016, Em confirmed that he was working on his eighth major label LP, when he released “Campaign Speech,” an 8-minute long track. “Don’t worry,” he wrote at the time. “I’m working on an album! Here’s something meanwhile.”

As for Dr. Dre, the producer-rapper released a single, “Gunfiyah,” as a promo for “The Defiant Ones” docuseries. It’s his first release since 2015’s Compton.

“How you spell C-E-O?” he asks on the track. “D-R-E / What a ni**a dream he could try to be / Even though I’m from a place where ‘a ni**a got techs’ don’t mean technology.”