Fiona, the Python library for reading and write geospatial
vector data that is used by GeoPandas, has a new 1.8.5 release with significant bug
fixes and performance improvements. See the change log for
pip install -U fiona to upgrade.
Another reason to upgrade is that the wheels on PyPI now include GDAL 2.4.0, a version with many core and format driver improvements, including support for GeoJSON feature sequences and WebP compression in GeoTIFFs.