 As Dean of the Sacred College, he was the first person after Pope Paul VI to sign each of the acts of the Second Vatican Council.In 1962, Tisserant became Grand Master of the Order of the Holy Sepulchre, a position that he held until his death.In 1969 Tisserant demanded a retraction from Cardinal Leo Joseph Suenens, Archbishop of Brussels-Mechelen, for the "defamatory and slanderous" statements that he allegedly made against the bureaucracy of the Roman Curia.