Last month, we learned that True Ventures had raised a quarter of a billion dollars for its fourth startup-investment fund.

Well, here’s a fun surprise gleaned from an SEC filing today: The firm just tacked on an extra $100 million, bringing the fund’s total to $350 million.

Nice work, True!

The firm was one of the 20 most active seed dealmakers in 2012 and 2013, and it’s the second most active fund investing in the hot-as-Hades Internet of things.

Recent investments include Node.js startup Npm (founded by the erstwhile leader of the entire Node.js project — i.e., a damn good bet), database startup Orchestrate (also incredible hot right now), and wearable company FitBit (a household name).

True was founded in 2006 by Jon Callaghan and Phil Black, who previously worked together at Summit Partners during the dotcom boom of the ’90s.