• I am on the latest Poetry version.
• I have searched the issues of this repo and believe that this is not a duplicate.
• If an exception occurs when executing a command, I executed it again in debug mode (-vvv option).

• OS version and name: Debian running in WSL2
• Poetry version: 1.1.0b2
• Link of a Gist with the contents of your pyproject.toml file: https://gist.github.com/iserko/ae0b5240bdb6af0a63264f834a3b4bee

Issue

Using the pyproject.toml I can run poetry install (log) and get the latest dbt installed (at the time that's 0.17.2), but then when I run poetry update (log) it downgrades dbt and updates requests.

The workaround for this is to pin dbt to dbt = "^0.17.2", however I was surprised to see poetry just downgrade.