Travis Barker shared a video of Penelope Scotland, 9, jamming out on a drum set for her birthday Thursday

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Travis Barker, Kourtney Kardashian
Credit: Travis Barker/Instagram; Inset: Allen Berezovsky/Getty

Travis Barker is celebrating Penelope Scotland's birthday!

On Thursday, the daughter of Kourtney Kardashian and Scott Disick rang in her 9th birthday with a special tribute from her mom's musician boyfriend.

The Blink-182 drummer, 45, shared a video to his Instagram Story of Penelope jamming out on a red, white and black drum set with help from Kourtney, 42. The Poosh founder reposted the clip to her Instagram Story, adding a heart emoji.

"Happy birthday Penelope!!!" Barker writes alongside the video.

Penelope also received birthday wishes from several members of the Kardashian-Jenner family on Thursday.

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Travis Barker, Kourtney Kardashian
Kourtney Kardashian's daughter Penelope playing the drums
| Credit: Travis Barker/Instagram
Travis Barker, Kourtney Kardashian
Credit: Travis Barker/Instagram

Grandma Kris Jenner, 65, paid tribute to her "little cutie pie granddaughter" with a heartfelt post on Instagram.

"You are the brightest light, the smartest girl, the most amazing chef, an incredible musician, the most creative at planning special events and surprises, the most thoughtful granddaughter, amazing daughter, sister, cousin and niece and make every single day I am with you very special!" Jenner wrote while sharing a gallery of sweet photos featuring Penelope.

"Thank you for all of the love that you give to all of us! I am so proud of you every single day.. you are so beautiful inside and out and I love you so so much XOXO Lovey," she concluded the post.

Mom Kourtney replied to the tribute, "My baby girl 🥺🥰"

Aunts Khloé Kardashian and Kim Kardashian also wished Penelope a happy birthday on social media.

Alongside a selfie of the pair on Instagram, Khloé wrote, "🦋 just like that…. She's NINE 🦋 ," to which Kourtney commented, "🥺🥺🥺🥺🥺❤️"

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"Happy Birthday to my baby girl Penelope! I can't believe you are 9! I love you so much!" Kim wrote on her Instagram Story next to a picture of the birthday girl.

In January, a source confirmed Barker and Kourtney's relationship to PEOPLE, and the couple made things Instagram official over Valentine's Day weekend.

Since then, the two have not shied away from showcasing their love for one another publicly. The couple has appeared in TikToks alongside their children, bonded while Kourtney tattooed him, and shared PDA-filled posts to Instagram.

Barker, who has a tattoo of Kourtney's name on his chest, additionally called the Poosh founder the "love of my life" in May.