Jamie Oliver became a father for the fifth time earlier this month — and we now know the name of his and Jools Oliver's baby boy!

In a new Instagram photo, the celebrity chef announced the little guy's moniker is River Rocket.

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"It's probably polite to formally introduce the new boy to you — his name is River Rocket Oliver. We think it suits him and he's a little gift and we are all very happy," he captioned the image.

River joins sisters Poppy Honey Rosie, 14, Daisy Boo Pamela, 13, Petal Blossom Rainbow, 7, and brother, Buddy Bear Maurice, 5.

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Jamie and Jools tied the knot back in 2000.

Congratulations!

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