Location Netherlands Organisation for Scientific Research (NWO), the Hague, Netherlands. Photo by Markus Spiske.The Workshop on Sustainable Software Sustainability 2019 (WOSSS19) will be held from 24-26 April 2019. Co-organised by DANS, the Software Sustainability Institute and the Netherlands eScience Centre, WOSSS19 will bring together key organisational and domain decision makers and knowledgeable people in the area of software sustainability. The focus of the workshop will be sustainable practice in software development, legacy systems and software sustainability policy. The aim is to document the current state of the art, network and identify future directions. More information and how to register.