This article aims to determine what important new developments have emerged in reparation for victims of serious violations of international humanitarian law (IHL). Our hypothesis is that there have been significant new developments in this area of particular relevance to IHL and that reparation for victims of serious violations of IHL is increasingly being incorporated into this body of law as one of its key components. It is submitted that the following developments are evidence of this gradual transformation of IHL: (i) broad recognition of the right of victims of serious violations of IHL to reparation; (ii) extension of the scope of the obligation to provide reparation under IHL to include non-State armed groups and individuals as well as States; (iii) the existence of innovative domestic reparation mechanisms complemented or supervised by regional courts, as evidenced by experiences in Latin America; and (iv) the reparation system of the International Criminal Court as a global mechanism.