Five players called into squad for Finland match
West Bromwich Albion defender Dara O'Shea and Derby County midfielder Jason Knight have been promoted from the U-21 squad whilst Norwich City striker Adam Idah rejoins the squad following clearance from the HSE.
QPR midfielder Ryan Manning has been called into the senior squad for the first time and Portsmouth forward Ronan Curtis is the fifth player to link up. Sheffield United striker David McGoldrick has returned to his club.
All five players have joined the squad in Dublin before they travel to Finland on Tuesday for Wednesday's UEFA Nations League match in Helsinki.
The Ireland squad and backroom staff were tested for COVID-19 at their Dublin base on Sunday night with results due on Monday afternoon.
Republic of Ireland Squad
Goalkeepers: Darren Randolph (West Ham United), Caoimhin Kelleher (Liverpool), Mark Travers (Bournemouth).
Defenders: Matt Doherty (Tottenham Hotspur), Enda Stevens (Sheffield United), Shane Duffy (Celtic, on loan from Brighton & Hove Albion), Kevin Long (Burnley), Cyrus Christie (Nottingham Forest, on loan from Fulham), Dara O'Shea (West Bromwich Albion).
Midfielders: Conor Hourihane (Aston Villa), James McCarthy (Crystal Palace), Jeff Hendrick (Newcastle United), Jayson Molumby (Brighton & Hove Albion), Jack Byrne (Shamrock Rovers), Robbie Brady (Burnley), Josh Cullen (Anderlecht), Jason Knight (Derby County), Ryan Manning (Queens Park Rangers).
Forwards: Daryl Horgan (Wycombe Wanderers), Sean Maguire (Preston North End), Shane Long (Southampton), Adam Idah (Norwich City), Ronan Curtis (Portsmouth)