The rapidly increasing number of sensor networks and smart devices contributed to the generation of a huge amount of information. Information that is generated by various sources and is published in different formats high-lights interoperability as one of the key prerequisites for the success of the Internet of Things (IoT). Hypercat is a specification defining a lightweight JSON-based hypermedia catalogue, designed to serve the needs of the industry. In this paper, we extend the existing work on semantic enrichment of Hypercat by defining a JSON-LD based catalogue. The proposed JSON-LD specification provides a mapping mechanism between JSON and JSON-LD catalogues, while highlighting the fact that JSON-LD could be seamlessly adopted by the Hypercat community.