Scarlett Johansson is officially off the market!

The "Avengers: Age of Ultron" actress has secretly married partner, journalist Romain Dauriac in October, according to Page Six.

The couple reportedly tied the knot a month after Johansson gave birth to their first child, Rose Dorothy. The ceremony was kept under the radar because they wanted it to be a private affair.

"Scarlett and Romain were married in a very intimate ceremony after the birth of their daughter," a source told the publication. "They kept the wedding a big secret because they both wanted privacy."

A different source said Johansson went to the Gotham Awards on Monday with Dauriac and introduced him as her husband.

"Scarlett is introducing Romain to everyonoe as her husband - she's also showing baby photos of their daughter Rose to people," the source said. "She looks radiant, and very, very happy."

A clerk for Granite County in Philipsburg, Montana has confirmed the news, according to People, saying the couple's ceremony was held on Oct. 1.

Rumors started swirling when Johansson was spotted wearing a gold band on her ring finger last month. Dauriac was also seen wearing a similar ring.

The pair confirmed their engagement on Sept. 4, 2013, according to Us. A representative for Johansson confirmed the couple were planning to get married but did not give a date then, saying: "I can confirm that Scarlett and Romain are engaged. They haven't chosen a date for the wedding."

Speaking to ET Canada last year, Johansson shared the engagement happened at the right time. "My friend was like 'congrats on timing,'" the "Under the Skin" actress said. "Things work out the way they do, maybe it's better to just get it out the way."

Johansson, who was married to actor Ryan Reynolds from 2008 to 2011, started dating Dauriac in 2012. They were introduced by a mutual friend, tattoo artist Fuzi, according to the Hollywood Life.