[ncruces]

Running `go mod tidy` months apart with no other changes to your module will not change your go.mod. It certainly won't update dependencies.

You run that when you've made manual changes (to go.mod or to your Go code), or when you want to slim down your go.sum to the bare minimum needed for the current go.mod.

And that's one common way to update a dependency: you can edit your go.mod manually. But there are also commands to update dependencies one by one.