On 28 August 1794, Pope Pius VI issued the bull Auctorem Fidei condemning the acts of the Synod of Pistoia in 1786.
Auctorem Fidei defended the authority of the pope against those who wished to limit papal authority and wished remove bishops from papal jurisdiction. Auctorem Fidei also condemned certain liturgical canons that the Synod of Pistoia had supported such as calling for churches to have only one altar, celebrating the liturgy in the vernacular and celebrating only one Mass on Sundays. The Synod of Pistoia also wanted to abolish all religious orders except for the Benedictines.
With Auctorem Fidei, Jansenism recieved one of its strongest condemnations.