Thanks for getting in touch. We do not currently publish the versions other than we sometimes note them in our release notes/change logs but that is a very good suggestion. Moving forward, I’ll see if it’s practical to do this in an automated way or manually otherwise. In the interim, you can view the version of installed dependencies (AWS, Azure, Terraform etc) in your Octopus Server installation folder. We bundle these dependencies in nuget packages and specify the versions in the package description.
For example, Octopus 2019.5.7 includes:
Terraform CLI Package
Hope this helps.