Post #122

We've just released v20.0a4. This is a hot fix release for a bug in setup.py that prevented optional dependencies from being recognized correctly. If you want to upgrade from v20.0a3 to v20.0a4, please upgrade with pip install -U --pre python-telegram-bot. Before upgrading from v13.x to v20.0a4, please carefully read the v20.0a0 release notes. • Fix a Bug in setup.py Regarding Optional Dependencies (#3209)