Munster captain Peter O'Mahony has joined international teammate Tadhg Furlong in committing his future to Ireland.
O'Mahony, 28, has signed a contract with the Irish Rugby Football Union (IRFU) that will keep him at Thomond Park until 2021.
His decision comes on the same day that Leinster prop Furlong also signed a new four-year deal with the IRFU. O'Mahony has won 42 caps for Ireland since making his international debut in 2012 and captained the British & Irish Lions in the first Test against New Zealand in June.
He said: "I am absolutely delighted to commit my future to Munster and Ireland for the next three years. I'm very proud of where I am from and I am really excited about what we are building down in Munster right now."
Munster chief executive Garrett Fitzgerald said: "We are delighted that Peter has signed this IRFU contract that will see him remain with us until 2021.
"I know the squad and supporters will all be pleased to see our captain, a proud Munster man, commit his future to the province and Irish Rugby.
"It is always a huge boost when we can retain our home-grown talent and I know all parties have worked very hard in retaining Peter's services."