They edged closer to France who they play next
Ireland's women remain in fifth place in the World Rugby rankings after their 27-3 win over Italy at the weekend.
Tom Tierney's side recorded a bonus point victory courtesy of a last minute try from Hannah Tyrrell. Leah Lyons, Sophie Spence and Paula Fitzpatrick scored the other tries for the Irish.
Ireland are less than two ranking points behind France in fourth and and just over two ahead of Australia in sixth. The three sides are all in the same pool when Ireland host the 2017 Women's Rugby World Cup later this year.
Ireland's Hannah Tyrrell scores the bonus point try. Image: ©INPHO/Giuseppe Fama
Ireland welcome France to Dublin in two weeks time looking for their third successive win of the 2017 Six Nations Championship.
New Zealand are top of the pile with England in second and Canada in third.