Carvalho signed for the Principality club in 2013 on a one-year deal after leaving Real Madrid, before Abidal confirmed he was re-joining Monaco from Barcelona two months later.
“AS Monaco is delighted to announce the club has agreed a one-year contract extension with Eric Abidal and Ricardo Carvalho,” a statement read on Monaco’s official website.
“Eric Abidal and Ricardo Carvalho are now tied to AS Monaco until June 2015.”
Monaco finished second in France’s top flight last season – nine points behind winners Paris Saint-Germain – and will play in the Champions League next term.
Abidal and Carvalho extend Monaco deals until 2015