- Fixed an error when building distributions if the `git` executable was not found ([#2105](https://github.com/python-poetry/poetry/pull/2105)).
- Fixed various errors when reading Poetry's TOML files by upgrading [tomlkit](https://github.com/sdispater/tomlkit).
- Fixed the PyPI URL used when installing packages ([#2099](https://github.com/python-poetry/poetry/pull/2099)).
- Fixed errors when the author's name contains special characters ([#2006](https://github.com/python-poetry/poetry/pull/2006)).
- Fixed VCS excluded files detection when building wheels ([#1947](https://github.com/python-poetry/poetry/pull/1947)).
- Fixed packages detection when building sdists ([#1626](https://github.com/python-poetry/poetry/pull/1626)).
- Fixed the local `.venv` virtual environment not being displayed in `env list` ([#1762](https://github.com/python-poetry/poetry/pull/1762)).
- Fixed incompatibilities with the most recent versions of `virtualenv` ([#2096](https://github.com/python-poetry/poetry/pull/2096)).
- Fixed Poetry's own vendor dependencies being retrieved when updating dependencies ([#1981](https://github.com/python-poetry/poetry/pull/1981)).
- Fixed encoding of credentials in URLs ([#1911](https://github.com/python-poetry/poetry/pull/1911)).
- Fixed url constraints not being accepted in multi-constraints dependencies ([#2035](https://github.com/python-poetry/poetry/pull/2035)).
- Fixed an error where credentials specified via environment variables were not retrieved ([#2061](https://github.com/python-poetry/poetry/pull/2061)).
- Fixed an error where git dependencies referencing tags were not locked to the corresponding commit ([#1948](https://github.com/python-poetry/poetry/pull/1948)).
- Fixed an error when parsing packages `setup.py` files ([#2041](https://github.com/python-poetry/poetry/pull/2041)).
- Fixed an error when parsing some git URLs ([#2018](https://github.com/python-poetry/poetry/pull/2018)).