Hi, There is v4.0.0a4 in GitHub which was released but not available in PyPI. That version has las dated dependencies (pytest-tornado is not maintained and abandoned). List of dependencies based on [0]: - install-require [/][%] - [ ] python-anyio - [ ] python-asyncpg - [ ] python-attrs - [ ] python-cbor2 - [ ] python-paho-mqtt - [ ] python-pymongo - [ ] python-redis - [ ] python-sqlalchemy - [ ] python-tenacity - [ ] python-typing-extensions - [ ] python-tzlocal - test [/][%] - [ ] python-aiosqlite - [ ] python-anyio - [ ] python-apscheduler - [ ] python-asyncmy - [ ] python-asyncpg - [ ] python-coverage - [ ] python-freezegun - [ ] python-paho-mqtt - [ ] python-psycopg - [ ] python-pymongo - [ ] python-pymysq - [ ] python-pyside6 - [ ] python-pytest - [ ] python-pytest-freezer - [ ] python-pytest-lazy-fixture - [ ] python-pytest-mock - [ ] python-uwsgi - [0] https://github.com/agronholm/apscheduler/blob/4.0.0a4/pyproject.toml May you check if your patch would be easy to migrate to the new version please? Thanks, Oleg