Leinster head coach Leo Cullen has agreed a new two-year contract extension with the province, which will keep him in the role until 2025.
Cullen, who won 221 caps for Leinster as a player, as well as 32 caps for Ireland, will be a decade in the job by the end of this contract, having been appointed in August 2015.
He was initially appointed as forwards coach in the summer of 2014 under Matt O'Connor, before being appointed head coach a year later.
Cullen has led his native province to a Champions Cup title in 2018 - when they defeated Racing 92 - and to four Pro14/URC victories during his tenure.
"It is a great honour for me to be asked to extend my time at Leinster Rugby. I feel very fortunate to able to work with such a brilliant group of people here," he told leinsterrugby.ie.
"Many thanks to Shane Nolan, Guy Easterby and the Leinster Professional Game Board along with David Nucifora from the IRFU for their continued support and backing of me through this process. Also to my family and friends, who only show me love and support, thank you for all the sacrifices you make.
"We are entering a really exciting period of the season and we are all focused on delivering our best in front of lots of people who have backed us all through our careers."
Leinster Rugby CEO Shane Nolan said: "This is great news for all Leinster Rugby supporters.
"Since 2015, Leo has done a remarkable job as Head Coach of Leinster Rugby and securing his signature was one of my top priorities."
IRFU Performance Director David Nucifora, commented: "The province is starting a new chapter next season with the loss of some influential voices in their environment, so it was important that Leo agreed to sign on for a further two years.
"He is a driving force behind a lot of the good work that goes on at Leinster and the stability and insight he brings will enable Leinster to transition successfully while also continuing to compete for honours and bring through new talent."
The province are currently in the process of identifying another assistant coach to work with Cullen, with senior coach Stuart Lancaster set to depart for Racing 92 in the summer.
Meanwhile, Ulster have confirmed that John Andrew and Craig Gilroy both sustained concussions during Saturday's win over the Cell C Sharks in Durban.
The two players will now follow the graduated return to play protocols.
