Updated at 7:56 a.m. Pacific with more details from Lyft.

Lyft today revealed that it’s received an additional $150 million in a raise that none other than activist-investor Carl Icahn led.

According to Lyft’s announcement, Icahn Enterprises is responsible for $100 million of that new $150 million. In a call with VentureBeat, a Lyft spokesperson declined to share where the remaining $50 million came from, but they said that this round augments the company’s March “series E.” Lyft’s valuation, we’re told, still sits around $2.5 billion following today’s news.

Here’s Icahn’s statement on the matter:

We are very happy to be investing in Lyft. I believe that ridesharing is poised to become a fundamental component of our transportation infrastructure. The company’s revenue growth to date has been extremely compelling, and increasing urbanization over the next 5 to 10 years should enable the company to maintain that trajectory. Additionally, I’ve been very impressed with Lyft’s founders and management team, and I believe they are well-suited to take advantage of this opportunity and to make Lyft an extremely successful company.”

This news arrives less than a week after reports that Uber’s next funding round may push its valuation to a frothy $50 billion.