In two papal bulls dated January 31, 1456, Pope III granted Prior General Stefano di Antonio da Castelletta the proceeds of a tax on all contracts of the Municipality of Fabriano and the ownership of certain lands for the restoration of Montefano, where "the body of Blessed Silvester rests" ("in quo corpus beati Silvestri Ordinis vestri institutoris requiescit"). The second document also mentions the cypress chest that held "the bones of Saint Sylvester." Popes Pius II, in 1461, and Sixtus IV, in 1472, granted indulgences to those who visited the church of San Benedetto di Montefano, where the body of "Blessed Silvester" was preserved, on the "feast of Saint Sylvester" and other holidays throughout the year. In 1594, Clement VIII granted a six-year plenary indulgence to the faithful who went to the church of the hermitage of Montefano, where the founder's body rested, or to the other churches of the Congregation on the feast day of the Saint, from first vespers until sunset on November 26.

In 1598, by order of Clement VIII, Sylvester's name was inserted into the Roman martyrology on November 26 ("At Fabriano in Piceno, Saint Sylvester, abbot, founder of the Congregation of the Sylvestrine monks"), and the Saint's "proper" readings in the Divine Office were approved. In the same year, the bishop of Camerino, Gentile Delfino, ordered that the feast of Saint Sylvester be celebrated throughout his diocese.

In 1661, Alexander VII extended the office and Mass of Saint Sylvester to the diocese of Osimo. In 1728, Benedict XIII ordered that the liturgical feast of the Saint, introduced in 1598, be celebrated with greater solemnity in the diocese of Camerino. In 1729, the office and Mass of Saint Sylvester were extended to all the dioceses of the Marche region, and in 1770 to the entire Papal States. In 1890, Pope Leo XIII ordered that the Saint's name be inserted into the Calendar of the Universal Church on November 26, which is equivalent to an equivalent canonization. In the Calendar of the Benedictine Confederation, approved by the Congregation for Divine Worship in 1972, the celebration of the Saint is listed as an "optional memorial," while in the Sylvestrine Congregation it has the liturgical rank of "solemnity." The 2001 editio typica of the Martyrologium Romanum lists "Silvestro Gozzolini" among the saints of November 26.