Kpatcha Gnassingbe, a brother of Togo's president, has been named as defence minister in the new cabinet, formed after April's disputed elections.
The opposition UFC says Faure Gnassingbe's victory was fraudulent
President Faure Gnassingbe's father, Gnassingbe Eyadema, ruled Togo for 39 years before his death in February.
The army installed Mr Gnassingbe as president before international pressure led him to contest polls which he won, amid claims of fraud.
No members of the main opposition party were named in the new cabinet.
There were calls for a government of national unity government to be set up to reduce political violence which saw dozens killed after the elections.
However, the Union of Forces for Change refused to be a junior partner and talks broke down.
However, one member of the opposition coalition which backed the UFC candidate in the polls, has been named in the government.
Abi Tchessa, leader of the Party of Social Reformers, was named justice minister.
"I don't see how this team can change the political landscape, especially with the appointment of Kpatcha Gnassingbe at defence," said Jean-Pierre Fabre, UFC secretary-general.
Earlier this month, Edem Kodjo, from a moderate opposition party was named prime minister - a post he also held under Mr Eyadema from 1994 to 1996.