• 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: OSX 10.14
• Poetry version: 1.1.0b1
• Link of a Gist with the contents of your pyproject.toml file:
  https://gist.github.com/brendongo/bc30924ffa50892c65a2b895af1901f4

Issue

Hi, I was trying out the beta release and thought you might find this bug interesting.

When switching from 1.0.10 to 1.1.0b1 poetry misses two sub-dependencies. To reproduce: run poetry install with 1.0.10 and note that jsonschema is in the poetry.lock file. When using 1.1.0b1 jsonschema is no longer in the lockfile.