It'll keep him at the province until the end of the 2021/22 season.
Johnny Sexton has put pen to paper on a new one-year contract extension with the IRFU and Leinster until the end of the 2021/22 season.
The Ireland captain turns 36 in July, but is as important as ever for country and province.
Sexton was named World Player of the Year in 2018 and has won three Six Nations Championships with Ireland and four European Cups with Leinster.
He made his international debut back in 2009 and has appeared for Leinster on 171 occasions.