For the last few decades, accounting scholars have established that accounting is a complex practice because of the confluence of social, cultural, political, and global aspects. Accounting is viewed as an enabling vehicle to reflect multiple logics. There is still a dearth of research exploring in-depth how the accounting practices of an organization adapt to the interplay between multiple logics in the context of a newly emerged logic. This study explored how the sustainability-infused rules and routinization process have changed in response to extant (such as governance logic, professionalism, managerialism, and state logic) and newly emerged (sustainability) logics in a higher education institution. This study draws on the institutional logics perspective and employs this theoretical perspective in a single case study (a mid-sized Ontarian research university) that recently has recognized sustainability as one of the strategic pillars. Data were collected for various departments and units using multiple data collection methods: semi-structured interviews, internal documents, and publicly available documents. The findings suggest that the accounting practice of the sample case study started to adapt, mainly in an informal way, to incorporate some sustainability concerns into its rules and routinization process. Accounting practice is influenced by state logic and managerialism and sometimes creates a competing manifestation with sustainability logic. The study will contribute to the literature by unpacking the malleable nature of accounting by showing sustainability-infused accounting evolution in a multi-logic organizational atmosphere. The interplay between extant and emerging logics informs the role of institutional logics in sustainability-focused accounting evolution and, thus, contributes to both accounting and sustainability literature. Although many higher education institutes have embarked on sustainability, no research has been offered to establish sustainability as a logic in the higher education sector. To fill this gap in the extant literature, this paper is one of the early attempts to offer sustainability as an emerging logic in the higher education sector. The study concentrated on exploring accounting adaptiveness due to energy saving and responsible investment initiatives, as these were the areas in which ONUNIV made early responses to sustainability.