Athanasius, Cyril of Jerusalem, Epiphanius of Salamis and Pope Innocent I listed the Book of Baruch as canonical.
The Synod of Laodicea (in 364) declared Baruch canonical. The same happened with the Synod of Hippo (in 393), followed by the Council of Carthage (397) and the Council of Carthage (419). Later, Augustine of Hippo (C. 397 AD) would confirm in his book On Christian Doctrine (Book II, Chapter 8) the canonicity of the book of Baruch.
The Decretum Gelasianum which is a work written by an anonymous scholar between 519 and 553 contains a list of books of Scripture presented as having been declared canonical by the Council of Rome under Pope Damasus I, bishop of Rome 366-383. This list mentions the book of Baruch as a part of the Old Testament Canon.