 In 1609, the Monastery was one of the first entities to accept the Union of Brest in the Polish-Lithuanian Commonwealth, and the Basilian Order took over its administration.The Basilians oversaw the rebuilding of the Monastery complex and expansion of its publishing activity.At the end of the 17th century, a printing house was established and, over a period of slightly more than one hundred years, published 350 titles in Ruthenian, Polish, and Latin.