Yellowstone star Luke Grimes is expecting his first child with wife Bianca Rodrigues

“Can’t wait to meet my little one,” Rodrigues wrote on social media.

It looks like Dutton Ranch is expanding: Yellowstone actor Luke Grimes and his wife, model Bianca Rodrigues, are expecting their first child.

Rodrigues announced the news on Instagram over the weekend, sharing a silhouette photo of her baby bump and writing, “Can’t wait to meet my little one.”

The couple married in 2018.
Grimes, 40, plays Kayce Dutton, son of John (Kevin Costner) and Evelyn Dutton (Gretchen Mol), in Yellowstone, the hit neo-Western series created by Taylor Sheridan. Grimes’ previous on-screen roles include Navy SEAL Marc Alan Lee in American Sniper; Elliot Grey, Christian Grey’s brother, in the Fifty Shades of Grey series; and vampire James Kent in True Blood.

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Yellowstone will return for the second half of its fifth and final season on November 10 — without Costner, who announced his departure in June. The remaining cast, including Grimes, Kelly Reilly (Beth Dutton) and Wes Bentley (Jamie Dutton), are expected to return for the final season, which will wrap up the multi-generational story of a Montana ranching family.

Grimes told PEOPLE earlier this year that he was “ready to tell the end of the story.”

“We’ve been doing this for seven years, and we started in 2017. It’s crazy,” he said. “It’s changed my life in every way possible. Nothing will ever be the same because of this show in every way, good and bad. I’m going to miss it terribly.”

The actor and his wife have moved to Yellowstone, Montana, and the two plan to stay after the show ends. “My wife and I love it there,” Grimes told PEOPLE. “I think it’s going to be a great place to raise a family.”