The Game of Thrones alum celebrated his 42nd birthday over the weekend after wrapping Aquaman and the Lost Kingdom.

Believe it or not, Jason Momoa indeed ages.

all ALOHA to you and yours J," Momoa wrote alongside a smiling shot of him with Brian Andrew Mendoza, his production partner of over 10 years. .

RELATED: Zoë Kravitz and Her Dad Lenny Kravitz Wish Jason Momoa a Happy 41st Birthday: 'I Love You'.

"PS i can't believe i have my own harley line," Momoa continued.

Lenny Kravitz, whose daughter Zoë Kravitz is Momoa's stepdaughter via his marriage to the "Fly Away" singer's ex-wife Lisa Bonet, posted a simple tribute to the man he considers "family" on Instagram.

Coincidentally, Momoa finished filming for Aquaman and the Lost Kingdom within three days of turning 42.

RELATED: Jason Momoa Prays Daughter Lola, 13, Is as 'Talented and Loving' as Stepdaughter Zoë Kravitz.