Ireland manager Mick McCarthy watched the Dubliner produce a Man-of-the-Match performance in Rovers' 3-0 victory over Sligo Rovers last Friday and was suitably impressed by the 22-year-old.
The manager has now decided to bring Byrne into the squad ahead of training on Monday morning at FAI National Training Centre after Callum O'Dowda was ruled out due to a knee injury, after flying into Dublin to be assessed by FAI medical staff.
O'Dowda joins Alan Browne and Ronan Curtis on the list of injured players who have dropped out from the original squad, while Kevin Long and Josh Cullen have reported for duty at the team base.
Goalkeeper Keiren Westwood, defender Richard Keogh and midfielder Conor Hourihane will miss training on Monday due to being afforded extra time before reporting in but all are expected to feature on Tuesday.
Republic of Ireland Squad
Goalkeepers: Darren Randolph (Middlesbrough), Keiren Westwood (Sheffield Wednesday), Mark Travers (Bournemouth)
Defenders: Seamus Coleman (Everton), Matt Doherty (Wolverhampton Wanderers), Richard Keogh (Derby County), John Egan (Sheffield United), Shane Duffy (Brighton & Hove Albion), Enda Stevens (Sheffield United)
Midfielders: Alan Judge (Ipswich Town), Jeff Hendrick (Burnley), Conor Hourihane (Aston Villa), Alan Browne (Preston North End), Harry Arter (Cardiff City*), Glenn Whelan (Aston Villa), Robbie Brady (Burnley), Jack Byrne (Shamrock Rovers), James McClean (Stoke City)
Forwards: Shane Long (Southampton), Sean Maguire (Preston North End), Ronan Curtis (Portsmouth), David McGoldrick (Sheffield United), James Collins (Luton Town)
*Indicates player is on loan
EURO 2020 Qualifiers
March 23: Gibraltar v Republic of Ireland
March 26: Republic of Ireland v Georgia
June 7: Denmark v Republic of Ireland
June 10: Republic of Ireland v Gibraltar
September 5: Republic of Ireland v Switzerland
October 12: Georgia v Republic of Ireland
October 15: Switzerland v Republic of Ireland
November 18: Republic of Ireland v Denmark