The replication crisis manifests, principally, in the systemic failure of published studies to hold up to independent replications. This phenomenon is widely recognised in biomedical sciences, with a Nature report showing that 90% of 1,576 surveyed researchers acknowledge the replication crisis. Although this is not an issue unique to sleep science, it is one that we, unlike other biomedical research areas, have not yet openly addressed. However, the need for a robust and credible knowledge base for sleep research is imperative, as our discipline directly influences clinical practice. This paper aims to record the engagement with open science approaches in two sleep journals: SLEEP and Journal of Sleep Research (JOSR). These journals were selected due to their association with principal sleep societies: the American Academy of Sleep Medicine, and the European Sleep Research Society, respectively.