Toro Rosso's technical director James Key has agreed a contract extension with the team.
The highly-rated English designer has been with the team since mid-2012, when he joined from Sauber, and in previous seasons been linked with a step up to Red Bull and a switch to Ferrari. Key has also played a pivotal role in expanding the team's technical operation in that time.
"I am delighted to continue with Toro Rosso and remain part of the Red Bull family," Key said. "This is a team which I have great respect for and have thoroughly enjoyed working with for the past 5 years; now I look forwards to continuing our project into the future.