In 1963, following the military coup by Dương Văn Minh, Bùi Dzinh was dismissed from service. Despite this, he continued to collaborate with his former superiors, Lâm Văn Phát and Phạm Ngọc Thảo in the organisation of several coup attempts against the then military leader Nguyễn Khánh on 19 February 1965. For his involvement, Bui Dzinh was pursued and arrested on May 1965 near Saigon. He was found guilty on two counts, membership in the attempted coup and the use of illegal force, and was sentenced to life imprisonment in the Chí Hòa Prison. He remained there until his release on 1 July 1967 by order of the President's Committee.