Traditional Catholic parishes run by one society of priests are growing in the United States, defying the trend of decline in the broader American church over previous decades.

Over the past year, parishes run by the Priestly Fraternity of St. Peter, a society of priests dedicated to celebrating the traditional Latin form of the Catholic liturgy, have reported large increases in Sunday Mass attendance. The traditional liturgy that draws attendees is the form of the Mass celebrated before the reforms instituted at the Second Vatican Council, a meeting of the church’s bishops in the 1960s.