Chape, as the club are known, beat state rivals Figueirense 2-1 to guarantee a top-four finish in Serie B with four games remaining and promotion for the 2021 season.
"Winning is good. Winning the Santa Catarina state derby is better. Winning the Santa Catarina state derby and guaranteeing a return to the Serie A is SENSATIONAL!" the club tweeted after the match at an empty Conda arena.
Chapecoense lost almost all of their first team squad and several directors and backroom staff when their plane heading to Colombia for the Copa Sudamericana final crashed into a hillside outside Medellin.
Ganhar é bom.— Chapecoense (@ChapecoenseReal) January 13, 2021
Ganhar clássico catarinense é melhor.
Ganhar clássico catarinense e garantir acesso pra Série A é SENSACIONAL!
The disaster caught the attention of the global footballing community, sparking sales of team shirts and merchandise around the world. Teams such as Barcelona organised charity matches and fundraisers to help the club.
Although their budget is a fraction of Brazil's big city clubs, Chapecoense's hastily rebuilt side remained competitive in the top flight until they were relegated in December 2019.
Tuesday's win brings them back to the top table and sparked celebrations in the small southern city.