Mark Zuckerberg and Priscilla Chan are expecting another daughter

The Zuckerberg family is bracing for some serious user growth in 2017.

Facebook CEO Mark Zuckerberg and wife Priscilla Chan announced Thursday that they are expecting another daughter — or as my boss Kara Swisher likes to say, another “future Facebook mobile user.”

It will be the couple’s second child, and comes as a bit of a surprise given they have been public about their difficulties conceiving in the past. When their first daughter, Max, was born in late 2015, Zuckerberg and Chan promised to spend virtually all of their money on philanthropic endeavors throughout their lifetime.

Here’s Zuckerberg’s post from Thursday announcing the news.

This article originally appeared on Recode.net.

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