Servat made his debut for the French national team on 14 February 2004 in a 35–17 victory over Ireland in the 2004 Six Nations Championship. That year, France won the Six Nations Grand Slam, by beating every other team in the competition, with Servat playing in every game. The following year, France came second in the Six Nations, finishing as runners-up to Wales. Servat only made one start in the 2005 tournament, but made three substitute appearances as well. Servat has now retired.