From SharpYaml > This project is no longer actively maintained since 2016, but it's still accepting Pull-Requests. YamlDotNet has about 10x the downloads, is more actively maintained, used by semantic kernel and other Microsoft products. Instructions for copilot: - Replace any SharpYaml package entry in csproj by YamlDotNet version 16.3.0 - Remove any using for SharpYaml - Update the rest of the code