Article L424-13 of the French Code governing the entry and residence of foreign nationals and the right of asylum
A foreign national who holds a multi-annual residence permit issued to beneficiaries of subsidiary protection and their family members, as provided for in articles L. 424-9 and L. 424-11, and who can show proof of four years’ lawful residence in France, will be issued with a ten-year residence permit, subject to lawful residence.