Ecto dependency error

[mustela]

Hey there!

Im trying to use the last ecto version but having an issue with this lib dependency.

Dependencies have diverged:
* ecto (Hex package)
  the dependency ecto 3.4.0

  > In deps/prometheus_ecto/mix.exs:
    {:ecto, "~> 2.0 or ~> 3.0", [env: :prod, hex: "ecto", repo: "hexpm", optional: false]}

  does not match the requirement specified

  > In deps/ecto_sql/mix.exs:
    {:ecto, "~> 3.4.3", [env: :prod, hex: "ecto", repo: "hexpm", optional: false]}

  Ensure they match or specify one of the above in your deps and set "override: true"
** (Mix) Can't continue due to errors on dependencies

Could we think of updating the lib?

Thanks!