The 27-year-old, who joined the Ligue 1 club in 2012, will now stay at Reims until at least the end of the 2017/2018 season.
“It was an easy decision, there was no hesitation,” Rigonato told the club’s official website.
“The club has a very interesting project and it depends on me, and from there everything came together to extending (my contract).
“I’m very happy here in Reims, I feel good in the city, in the group, I have a good relationship with the club and the fans.
“With this extension, everyone is happy, my family, me and the club, I think.”