 In 871 Isaac, Bishop of Langres, re-founded it as a Benedictine abbey, and restored the basilica at the same time.In 989 Bruno, Bishop of Langres, requested Mayeul, Abbot of Cluny, to send monks to re-settle the abbey, grown decadent, as a Cluniac house.In 990 William of Volpiano was appointed the new abbot.