Ireland will get over 6,000 extra tickets to Euro 2016 after discussions between the FAI and UEFA.
The additional allocation of 6,502 tickets for the three group matches brings the total number of tickets available to 32,502.
There were more than 275,000 applications by Ireland fans for the available tickets by the deadline last week.
New allocation for Republic of Ireland supporters for Euro 2016:
Republic of Ireland v Sweden - 16,087 (13,000 + 3,087) - 13 June, Stade de France
Belgium v Republic of Ireland - 7,095 (6,000 + 1,095) - 18 June, Stade de Bordeaux
Italy v Republic of Ireland - 9,320 (7,000 + 2,320) - 22 June, Stade Pierre Mauroy
The Republic of Ireland were among the top five countries in terms of volume of demand for tickets - alongside Poland, France, Austria and Switzerland - and the game against Sweden is in the top three in terms of applications, alongside the clash of German and Poland, and Portugal and Austria.
UEFA intends to contact each successful applicant by the end of February to inform them of the timeline expected for payments to be taken, while all applicants will be informed of their final status by 29 February at the latest.
Reacting to the news, FAI chief executive John Delaney said: "I am very happy to say that following meetings with Nyon, Switzerland last Friday, UEFA has awarded Republic of Ireland fans with 6,502 more tickets.
"These tickets will go some way to satisfying the huge demand for Ireland matches at Euro 2016."