Born in 1946, was elected abbot on 2 October 1992. His motto is Quae sursum sunt sapite (Savour the Things that are Above [Col 3: 2]), which demonstrates his firm commitment to Solesmes' contemplative monastic ideal. At his request, the process for Dom Guéranger's beatification was opened by the Bishop of Le Mans.
In 1997, Dom Dupont founded a monastery in Lithuania, sending a dozen monks of Solesmes to Palendriai. This new monastic church was consecrated on 7 June 2002.