Alexander Rossi and Ma Qing Hua will get some valuable mileage under their belts this season after being named Caterham's reserve drivers.
The duo will act as back-ups to Charles Pic and Giedo van der Garde and will get plenty of driving time during practice seasons.
American Rossi fulfilled the role last season as well and had a taste of the action at the Spanish Grand Prix and the Young Driver Test.
He is set to get more opportunities this year with the team confirming he will take part "in a number" of Friday sessions.
Team principal Cyril Abiteboul said: "Alexander continues his development with us into 2013 and his promotion is a reflection of the investment we are making in him for the future.
"As reserve drivers, both Alexander and Ma will attend every race with us and will be driving in a number of FP1 sessions to continue their development.
"One of the main challenges facing young drivers moving up to F1 is the sheer number of people they have to interact with compared to any other level of their motorsport career. They go from a small number in Formula Renault 3.5 to more than 15 in F1, across engineering, performance, reliability, engine, KERS, strategy, communications and marketing. The programme we have devised for Alexander and Ma will allow them to immerse themselves completely in the F1 environment throughout 2013, preparing them for the day when they take the next step up to the ultimate level."
He added: "I'm very pleased to welcome Ma into our team. Ma joins us with previous F1 experience from 2012, and will play a key role in helping our GP2 team achieve their 2013 goals.
"We are looking forward to helping him develop his talents, both in the F1 and GP2 environments, and giving Chinese fans a figurehead to support on track throughout the year ahead."
Rossi said: "After many discussions this winter with Caterham regarding my 2013 program, today's announcement brings me even closer to my goal of racing in F1.
"My goals from the Friday practice sessions that I will drive this season is to fulfil the team's runplan for each session, work closely with everyone and learn as much as possible, always being ready for the next opportunity."
Chinese driver Ma will also be racing with Caterham's GP2 team in 2013.
"I am very excited about joining the Caterham family," he said.
"Both teams have everything they need to keep growing in the right direction and I am looking forward to playing an important role in helping them achieve what they've set out to this year.
"I know the fans at home will be really excited to see me race in GP2 and with the F1 work I also have ahead of me, China can be proud that it continues to have a driver involved in motor racing at the very highest level."