Munster back-row forwards Robin Copeland and Dave O'Callaghan have signed two-year contract extensions that will see them remain with the province until at least June 2018.
Wexford-native Copeland joined Munster at the start of the 2014/15 season and has gone on to make 24 appearances, scoring six tries.
The 28-year-old represented the Ireland Wolfhounds against England Saxons in January 2014 and later that year played in Emerging Ireland's Nations Cup-winning campaign in Romania where he was named player of the tournament.
Academy product O'Callaghan has made 52 appearances for the province after making his PRO12 debut against Ospreys at Thomond Park in October 2011.
The 25-year-old, who is sidelined with a thigh injury at present, represented Ireland U20s in two Junior World Championships and featured for Emerging Ireland in the 2013 Tbilisi Cup in Georgia.
Meanwhile, Academy player Rory Scannell has signed a senior contract and will play on a development contract at the start of the 2016/17 season before advancing to a full contract in 2017/18.
Ireland U20 international Scannell, 22, has made 14 appearances for Munster at centre and fly-half and was selected for the Emerging Ireland squad that won this year's Tblisi Cup in June.
Head coach Anthony Foley said: "It is great to have Robin, Dave and Rory commit to the province. Each player has his own individual attributes and are all valuable members of this squad.
"With Robin and Dave we are maintaining the services of two hugely physical players that each bring different skill-sets to our overall game. In addition to this, both players have proven their versatility over the years in playing across the back row and at lock so we are delighted to have players of their calibre in the squad.
"Similar to Dave we are fortunate to have further home-grown talent like Rory make their way up through the ranks.
"For a young guy who has been playing at the next level for over a year now we are looking forward to seeing Rory's contribution develop into the future."