Avril Lavigne has recently revealed a slightly unconventional secret that makes her look younger.

The 37-year-old singer opened up about the two beverages that she often relies on to keep her looking like the 17-year-old who burst onto the music scene with “Sk8er Boi” in 2002.

In an interview published on Thursday, Lavigne told The Sun, “My secret, I’m going to tell everybody is green juice and beer.”

The Bite Me singer went on to reveal that she has been working hard with Travis Barker on her seventh studio album, Love Sux.

She said, “Since then I’ve been working with him, it’s been super- fun. He’s the president of my record company, which is, like, as cool as it gets.”

Lavigne also noted that getting to work with Barker’s bandmate, Mark Hoppus, on one of her new tracks was an experience she will cherish forever.

She said, “It was such an honor to work with Mark because I listened to Blink when I was very young. I don’t get nervous as I’m just, like, thinking about the song and, like, giving it my all. But working with Mark, I was, like, ‘Okay, this is crazy.’”

In December, a source close to Lavigne told PEOPLE, “She’s making a huge comeback with her music. Travis Barker is really guiding her and giving her great advice and using his contacts as well to collaborate and work with her.”

Mod Sun, 34, Lavigne’s boyfriend, is also a big inspiration in her life. He has been playing a major role in helping her with her music. Sun teamed up with Lavigne on multiple songs together, including a stripped-down acoustic version of his hit, Flames, and the acoustic version of Lavigne’s latest single, Bite Me.

Explaining the couple’s close bond, the source said, “Avril and Mod Sun are a lot more serious than people think. Any time his name is brought up she lights up. He helps her a lot creatively with her projects.”