Against the backdrop of failing environmental governance, rights of nature (RoN) are lauded as the paradigm shift needed to transform law's approach to nature. RoN have been increasingly proclaimed at the domestic level but remain mostly absent from international law. As examined in this article, this is notably as a result of some profound incompatibilities between international law and RoN, including the fact that most international treaties approach nature as a resource to be owned, exploited or protected for the sake of humans. However, despite this dominant approach to nature, some areas of international law, notably under the leadership of Indigenous peoples, are starting to acknowledge a more relational approach to nature, putting forward concepts of care, kinship, and representation of nature in international law. Building on these developments, this article offers a reflection on potential synergies between RoN and international law, specifically by changing the latter's approach to nature. It argues that some of the RoN concepts concerning duty of care, institutional representation of nature's voice, and ecocentrism could serve as a platform to reinterpret some of the anthropocentric principles of international law, creating some potential synergies between RoN and international law.