At the 7th (Special) Session of the Supreme Soviet of the Soviet Union Ninth Convocation on October 7, 1977, the third and last Soviet Constitution, also known as the Brezhnev Constitution or the constitution of the developed Socialism, was adopted unanimously.
Pada Sidang (Istimewa) Ketujuh dalam Pertemuan Kesembilan Majelis Agung Uni Soviet tanggal 7 Oktober 1977, Konstitusi Soviet yang ketiga dan terakhir atau disebut juga Konstitusi Brezhnev, disahkan dengan suara bulat.