Jaime Alguersuari and Sebastien Buemi will stay on at Scuderia Toro Rosso next year, team boss Franz Tost said on Thursday.
"I believe our drivers will be well prepared for 2011, which is why they are both confirmed for next year," said Tost in a statement.
"It is also logical, because one key role of Scuderia Toro Rosso is to bring on young drivers from the Red Bull Young Driver programme and at the ages of 21 and 20 respectively, both Seb and Jaime certainly still meet the right criteria."
Twenty year-old Alguersuari joined Toro Rosso in the middle of the 2009 season, becoming the youngest ever driver to take part in a grand prix.
Team-mate Buemi, 21, has been with the team since the start of last year.