Djemba-Djemba, who was released by Partizan Belgrade in December six months into a two-year deal, has agreed a short-term contract in Paisley.
"I hope the Cameroon manager can see me playing here and I can get in the squad," said the 32-year-old, who already has 24 international caps.
"You never know. I would be very happy to play for my country again."
Djemba-Djemba has not been in the recent squads of Cameroon head coach Volker Finke but is hopeful of impressing the German.