Valtteri Bottas is confident Williams will up their performances next season, which will be his second with the F1 team.
On Monday, Williams confirmed that Bottas will remain with the team for the 2014 season, which will herald the arrival of 1.6-litre turbocharged V6 engines.
It will also see Felipe Massa move over to Williams.
The team announced that the 11-time grand prix winner will partner Bottas next season with the Finn welcoming his new team-mate into the fold.
"I'm very happy to be staying with the team as I embark on my second season in Formula One," said Bottas.
"I have known everyone here for many years, firstly as a test driver and now as a race driver, so it feels like home. I have faith in Williams and I know we can do so much better in the future than our current performance shows.
"I am looking forward to having Felipe as my team-mate. He is a quick and experienced driver and together we will be pushing to the maximum to improve the car and get as many points as we can next season. We will be working throughout the winter to ensure we are ready for the challenge of 2014.
"I would also like to thank everyone at Williams, especially Frank, Claire and the senior management for their on-going trust in me."