Justin Bieber and Hailey Bieber are brushing off rumors that their six-year marriage is on the rocks.

Three months after welcoming their son Jack Blues, the couple is doing well, and ignoring any chatter that says otherwise, a source tells PEOPLE.

“They laugh at the constant divorce rumors,” the insider says. “It’s annoying but just noise.”

Justin, 30, and Hailey, 28, celebrated their sixth wedding anniversary in September. They tied the knot in a New York City courthouse in 2018, and celebrated with a larger wedding a year later in South Carolina.

In a post to her Instagram Stories, Hailey showed off their festive anniversary celebrations, which featured balloons and romantic candles.

Justin Bieber and Hailey Bieber attend the premiere of YouTube Original’s “Justin Bieber: Seasons” on January 27, 2020 in Los Angeles, California.Alberto E. Rodriguez/Getty

“6 years,” she wrote atop a Polaroid photo of her and Justin kissing, adding a heart and a ring emoji. “Love you baby.”

The anniversary came weeks after the pair welcomed son Jack Blues in August, which they announced by sharing a photo of his foot to Instagram.

“They seem even more in love since the baby arrived,” a source told PEOPLE at the time. “[Justin’s] been in a happy bubble since baby Jack was born. He wants to focus on being a great dad and husband.”

So far, the couple has kept their bundle of joy out of the spotlight, though they showed off a Kim Possible-inspired family Halloween costume in early November. Justin went as Ron Stoppable, Hailey as Kim Possible and baby Jack as Rufus, Ron’s pet naked mole rat in the Disney Channel animated series.

Justin Bieber and Hailey Bieber in January 2020.Jon Kopaloff/Getty

The “Peaches” singer and the Rhode founder were previously forced to speak out amid a flurry of rumors surrounding the state of their marriage in March, with Hailey sharing a blunt post to her Instagram Story.

“Just FYI the stories and constant ‘blind items’ I see on TikTok are 100% of the time wrong Made out of thin air… Come from the land of delusion…” she wrote. “So I know it may be fun feeding into these stories but just know they’re always false xx sorry to spoil it.”

In the months since, both Justin and Hailey have remained a constant presence on one another’s social media feeds. In October, Justin shared a photo of him and Hailey kissing in a carousel that also appeared to tease new music.

The star has not released a solo studio album since Justice in 2021, which featured hits like “Peaches” and “Ghost.”