👋 When I add a dependency to a leiningen project in project.clj , do I need to restart Calva? If I use Refresh all, would it pick up the new dependency?

The REPL needs a restart.

So you have to disconnect and then connect I believe. This is not a Calva thing.

👍 Thank you @hindol.adhya

There might be libraries that help live reload dependencies. Never tried.