Human rights have long been discussed in relation to global governance processes, but there has been disagreement about whether (and how) a consideration for human rights should be incorporated into the workings of the Internet Corporation for Assigned Names and Numbers (ICANN), one of the main bodies of Internet governance. Internet governance is generally regarded as a site of innovation in global governance; one in which civil society can, in theory, contribute equally with government and industry. This article uses the lens of boundary object theory to examine how civil society actors succeeded in inscribing human rights as a Core Value in ICANN's bylaws. As a "boundary object" in the negotiations, the concept of human rights provided enough interpretive flexibility to translate to the social realities of the various stakeholder groups, including government and industry. This consensus-building process was bound by the organizing structure of the boundary object (human rights), and its ability to accommodate the interests of the different parties. The presence of civil society at the negotiating table demanded a shift in strategy from the usual "outsider" tactics of issue framing and agenda setting, to a more complex and iterative process of "productive contestation," a consensus-building process fueled by the differences of experience and interests of parties, bound together by the organizing structure of the boundary object. This article describes how this process ultimately resulted in the successful adoption of human rights in ICANN's bylaws.