Mads Ostberg will be retained as Kris Meeke's Citroen team-mate for the 2015 World Rally Championship.
The Norwegian will tackle all 13 rounds of the 2015 WRC with Jonas Andersson co-driving his DS 3 WRC.
Ostberg believes the deal gives him a shot at adding to his sole win so far, the 2012 Rally of Portugal triumph retrospectively awarded when Mikko Hirvonen was disqualified.
"I have really enjoyed the last few months," said Ostberg, who was fifth in the 2014 standings.
"I have learned a lot just by being in contact with this fantastic team and I feel that I'm a better driver.
"I'm really looking forward to seeing the upgrades that have been made on the DS 3 WRC.
"Thanks to the work done last year and the developments we're testing and confirming this winter, I want to be able to fight to win rallies as often as possible."
Ostberg admitted he had to make changes to his driving style to get the best out of the Citroen, having spent previous years in a Ford Fiesta RS WRC, but felt he had improved overall as a result.
"The work I put in enabled me to discover new techniques, and they have helped me get to grips with certain surfaces and conditions more easily," he said.
"I'll be using this experience to go even further in 2015."
Citroen team principal Yves Matton expects Ostberg to build on his first full season as a factory WRC driver next year.
"At 27 years old, Mads Ostberg is now one of the most experienced drivers in the World Rally Championship," said Matton.
"His first season in the DS 3 WRC allowed us to assess his potential.
"Mads produced some strong performances, despite being rather unlucky at times during the year.
"Having scored 108 points, his fifth place in the drivers' championship reflects his investment.
"He'll be able to build on his first season in the DS 3 WRC and will be beginning 2015 already perfectly familiar with the team and the car.
"Like with Kris Meeke, the aim will be to reap the rewards of the work we have put in."
Meeke and Ostberg will be joined by Sebastien Loeb and Daniel Elena for next month's season-opening Monte Carlo Rally.
Loeb and Meeke will be registered to score points for Citroen.
2015 WRC LINE-UP SO FAR:
Volkswagen: Sebastien Ogier, Jari-Matti Latvala, Andreas Mikkelsen
Citroen: Mads Ostberg, Kris Meeke
M-Sport Ford: Elfyn Evans, Ott Tanak
Hyundai: Thierry Neuville, Dani Sordo (part-time)
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