Martin O'Neill and Roy Keane
O'Neill and his assistant Keane signed on to guide Ireland through World Cup qualification.Getty

Republic of Ireland manager Martin O'Neill and his assistant Roy Keane have signed new contracts until 2018.

O'Neill, who replaced Giovanni Trapattoni in November 2013, successfully guided the Boys in Green into Euro 2016, where they begin their campaign against Sweden on Monday 13 June.

His backroom team of Steve Guppy, Seamus McDonagh and Steve Walford have also had their contracts extended.

"I am delighted that John Delaney and the FAI Board have extended our contracts for the World Cup campaign," said O'Neill.

"It has been an absolute privilege to have been in charge of the Republic of Ireland national team, these last 30 months, and we go to France tomorrow in good spirits, with a strong desire to do well in the next few weeks.

"The players have done brilliantly in the campaign so far and they are ready for the big challenges ahead."

Republic of Ireland sealed qualification for Euro 2016 after a play-off victory over Bosnia-Herzegovina after finishing third in their group campaign behind Germany and Poland.

After this summer's European Championships, O'Neill and Keane will be tasked with guiding Ireland to their first World Cup since 2002.