Neven Subotic and Sven Bender have committed their futures to Borussia Dortmund by penning contract extensions at Westfalenstadion.
Defender Subotic, who had 18 months left to run on his previous deal, has signed until June 2014, while Bender is now now tied down until 2016.
"We are delighted to have been able to tie down these two key members of our title-winning team," said director of sport Michael Zorc.
Coach Jurgen Klopp added: "I am very pleased that the lads want to carry along the path we are going."
Dortmund currently sit third in the Bundesliga table, 12 points behind leaders Bayern Munich.