Nico Rosberg has signed a new multi-year deal with Mercedes to extend his stay with the championship leaders.
The German joined the Silver Arrows from Williams for their return to the sport in 2010 and has taken six victories and 17 podium finishes in his four-and-a-half seasons with the team.
Reports in recent months had suggested that Rosberg had already agreed an extension to his contract before the start of the season, however Mercedes confirmed on the eve of his and their home German GP this weekend that they "signed a multi-year contract extension with Nico Rosberg on 14 July 2014".
The 29-year-old's teammate and title rival Lewis Hamilton is already contracted to the team until the end of 2015.
"I am very proud to drive the Formula One Silver Arrow of the modern era," Rosberg said.
"As a German, the heritage of Mercedes-Benz is very special for me, and I am proud to be able to represent the best car brand around the world.
"It has been a difficult road to get to where we are now - but everybody kept believing and, thanks to the fantastic support from Mercedes-Benz, we are now leading the way in F1.
"There has been big progress during the past year, building up our structure, management and capability for the future. We have an awesome team and I am confident that we have the right people in place at every level. I'm looking forward to the next years together, when we will keep pushing to win even more races - and, hopefully, championships."
Head of Mercedes Motorsport Toto Wolff added that Rosberg had shown himself this year to be a world class driver and was delighted to secure the German’s signature.
"Nico has been part of the Silver Arrows project since day one and he has a big stake in the development of the team since 2010," Wolff said.
"His speed, commitment and focus have all helped to give clear direction and to drive the team forward. With his performances in 2014, Nico has demonstrated to the outside world what we knew already in the team: that he is one of the very top drivers in Formula One.
"This new contract brings us important stability and continuity for the future, and I am delighted to be able to make the announcement in time for the home race of Mercedes-Benz and Nico in Hockenheim."