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."
The news comes after Monaco confirmed that they will not be signing goalkeeper Victor Valdes this summer after he failed a medical on Wednesday.
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.