Establishing reliable chronologies for archaeological and palaeoanthropological sites in Indonesia is important for studies of human evolution and dispersal. However, many such sites are situated in volcanic regions, whose sediments are generally difficult to date using luminescence dating methods. Here, the application of improved procedures using the post-infrared infrared stimulated luminescence (pIRIR) signal targeted to dating volcanic sediments is presented on two case studies of archaeological sites in Indonesia with an extended hominin occupation in the Pleistocene: Liang Bua and Leang Bulu Bettue.