Lyon's promotion to the Top 14 has been sealed after Bayonne's defeat to Montauban on Friday.
Lyon moved to 100 league points so far having won 22 of their 24 games so far in the ProD2 this season, with Bayonne trailing far behind on 69 points.
The news comes after Lyon defeated Perpignan 40-19 on Thursday.
Coached by Pierre Mignoni, the former Toulon assistant coach, Lyon have already signed Delon Armitage and Mike Harris for next season.
— LOU Rugby (@LeLOURugby) 1 April 2016