Her beatification depended upon a miracle attributed to her intercession with one being investigated from 13 January to 6 March 1955 before the Congregation for Rites validated the informative process of investigation in Rome on 25 November. Yet the cause remained inactive, since a reform of the canonization process in 1983 meant that miracles were assessed in a different manner. But it resumed on 1 July 1987 when a medical panel approved it, as did the theologians on 16 October 1987 and the members of the Congregation for the Causes of Saints on 17 November 1987. Pope John Paul II approved this miracle on 11 December 1987 and presided over Canossa's canonization in Saint Peter's Square on 2 October 1988.