Czech Wordnet represents one of the national wordnets created during the EuroWordNet and Balkanet projects. However, the data contains various issues that affects the use of Czech Wordnet in NLP applications. Due to lack of resources, it was not possible to update Czech Wordnet thoroughly since the publication of the first version. In 2017, we have started a project to evaluate and update Czech Wordnet, followed by the connection to Collaborative Interlingual Index. This paper provides overview of various updates and extensions of the Czech Wordnet data, and presents the roadmap to publish revised version of Czech Wordnet under open license.