Valtteri Bottas has been confirmed as a Williams race driver for 2013.
The 23 year old Finnish driver spent 2012 as the team's test driver, taking part in fifteen practice sessions across the season.
Bottas joins Pastor Maldonado, who has also been confirmed as staying on at Williams for a third season.
"’It has always been my life-long dream to compete in the Formula One World Championship", said Bottas.
"To do so with one of the most legendary teams in the sport is incredibly special. I’ve really enjoyed my three years with Williams so far and feel very at home here so my goal was always to stay for 2013 and progress to a race seat. I’m looking forward to getting my Formula One career started and enjoying a lot of success with Williams".
Pastor Maldonado also spoke of his enthusiasm about staying with the team.
"I’m really enjoying my time with Williams and I was obviously very happy when I was told that I would be continuing with the team in 2013. 2012 was a memorable year for me with the win in Barcelona and we made a big step forward in terms of performance", he said.
"I have a lot of confidence in the team and hopefully next year will see us move even further up the grid and taste more success"
Team principal Sir Frank Williams added that he is excited about his new driver line up.
"In Pastor and Valtteri we have two of the most exciting talents in motor racing and I am especially excited about what 2013 can bring for Williams".
"Pastor has always demonstrated remarkable pace and this year has seen him mature as a racing driver. Valtteri is quite simply one of the most talented young racing drivers I have come across and we expect great things from him in the future".
He also thanked outgoing driver Bruno Senna for his contribution to the team.
I would also like to take this opportunity to thank our departing driver Bruno Senna for his hard work over the past year and wish him the best of luck going forward