Helen Lander scored the only goal of the game as Wales beat the Republic of Ireland 1-0 in a Uefa Women's Euro 2013 Group Four qualifier in Cork.
Chelsea's Lander struck on 71 minutes to secure a victory that keeps alive Wales' play-off hopes.
The win leaves Wales in third place in the group - 11 points behind leaders France and three points behind second placed Scotland, who have played one game less.
Jarmo Matikainen's side face Israel at Wrexham's Racecourse Ground on Wednesday.
Israel, who are bottom of the group, lost 8-0 to Scotland in a one-sided qualifier at Tynecastle.