Pinterest’s valuation is closing in on $4 billion after its latest funding round of $225 million, according to a report.

AllThingsD cites “several sources” in a report on the funding, which is led by late-stage investor Fidelity Investments. Just eight months ago, Pinterest was valued at $2 billion to $2.5 billion.

The latest round is aimed at helping Pinterest expand internationally. The social network had 24.9 million monthly unique users in September, according to comScore. However, that figure doesn’t take mobile into account. Adding mobile users, Pinterest has more than 50 million unique visitors, according to AllThingsD.

Pinterest reps could not be reached for comment on the report, but CEO Ben Ben Silbermann released the following statement to AllThingsD: “We hope to be a service that everyone uses to inspire their future, whether that’s dinner tomorrow night, a vacation next summer, or a dream house someday. This new investment enables us to pursue that goal even more aggressively.”