Dave Heffernan and Niyi Adeolokun are the latest two Connacht players to sign contract extensions with the province.
Heffernan has chalked up 110 appearances so far, having come through the club game in his native Ballina and joining the Connacht Academy in 2011.
Initially starting his career as a back row, he converted to hooker in 2013.
At international level Heffernan was part of the Irish squad for the summer tour of the USA and Japan in 2017 and made his international debut against the USA.
Winger Niyi Adeolokun joined Connacht ahead of the 2014-15 season and since has since made 82 appearances, scoring 31 tries. The 28-year-old winger was capped for Ireland against Canada in 2016 and was also part of the Barbarians side that defeated England last summer.
