Local authorities earlier said 231 people died in the blaze, but the Rio Grande do Sul state raised the number Tuesday to account for three additional victims whose names didn't appear on the original list.
One of the victims had originally been confused with another person with a similar name. Another was identified early Sunday but didn't appear on a previous list.
The blaze broke out early Sunday at a packed nightclub in Santa Maria, a college town of about 260,000 in southern Brazil. Police say early investigations point to pyrotechnics used by a band as the likely cause of the fire.
Most of the victims died from smoke inhalation. More than 122 injured people remain hospitalized.