Tantilla boipiranga is a rare vulnerable snake found in the Atlantic Forest, distributed in the phytophysiognomy of rocky grasslands (campos rupestres), in southeastern Brazil. Here, we update the known geographic range of the species to eight new localities in the state of Minas Gerais, Brazil, extending its distribution approximately 400 km northwards to the municipality of Almenara, from the previous northernmost record, and 703 km from the type locality.