Daniel Juncadella will return to the GP3 Series after reaching an agreement with the Tech 1 Racing team.
The Spaniard had competed in the season-opening race at Barcelona, before switching his focus to the Formula 3 Euro Series with Prema Power Team.
Now Juncadella will add the remaining rounds of the GP3 championship to his commitments.
He will also continue to race with Prema in F3, the team said.
"I want to thank Prema and Astana for giving me this opportunity," said Juncadella.
"Being able to do even more races in 2010 is really important for me, so I'll be even more prepared for my top commitment, the Formula 3 Euro Series."
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