Modern peacekeeping is increasingly expansive, and much of it occurs in Africa. The African Union's attitude to the challenges of regulating this modern peacekeeping is therefore an important source for the associated legal debates, but one that is often neglected (in part because the sources are limited and often in draft form). This article seeks to articulate and then critique the AU's emerging view on the application of international humanitarian law and international human rights law to peacekeeping activity and the relationship between the two bodies of law in this context. It argues that the AU's emerging position treats international humanitarian law as a narrowed lex specialis, only displacing international human rights law in relation to peacekeepers while they are actively engaged in armed conflict. Even this position, however, underestimates the extent to which the pervasive rights-based concerns in AU sources imply a still more pervasive application of international human rights law to its peacekeeping activities.