Yggdrasil v6.0 and Yggdrasil_postgres v5.0 dependencies problem

[ndrean]

I use {:phoenix, "~> 1.6.6"} with project[:elixir] = 1.13 and {:yggdrasil, "~> 6.0"} and config :yggdrasil, postgres: [hostname: "localhost"]

I tested the "pg_notify" example:

iex> Yggdrasil.subscribe(name: "new_books", adapter: :postgres, transformer: :json)
{:error, "Yggdrasil postgres not registered in any node"}

If I declare {yggdrasil, "~> 5.0"}, then I have a dependency problem. The command mix deps.get returns:

Failed to use "phoenix_pubsub" (version 2.0.0) because
phoenix (version 1.6.6) requires ~> 2.0
yggdrasil (versions 5.0.1 and 5.0.2) requires ~> 1.1

I tested that the trigger worked with Postgrex.Notification using this setup:

# when I notify in a psql session:
yggdrasil_pg_notify=# NOTIFY "new books", '{"id": 1, "title": "one"}';

# the iex responds with:
iex(2)> [info] [id: 1, title: "one"]