PrefectHQ/prefect 3.6.6 on GitHub

3.6.6 - The Eternal Docket of the Spotless Server

Released on December 08, 2025

Enhancements ➕➕

Add client-side configuration for deployment concurrency grace period by @devin-ai-integration[bot] in #19489
Add PostgreSQL search_path support via settings by @devin-ai-integration[bot] in #19620
Add memory safeguards to event persister service by @desertaxle in #19651
Add perpetual services infrastructure and convert cancellation_cleanup to perpetual Docket task by @zzstoatzz in #19715
Convert pause_expirations service to perpetual Docket task by @zzstoatzz in #19719

Bug Fixes 🐞

Prevent uvloop from setting global event loop policy in healthcheck by @zzstoatzz in #19660
Clarify result_storage usage with @task and @flow decorators by @devin-ai-integration[bot] in #19671
Exclude DEFAULT cache policy from triggering automatic persist_result by @devin-ai-integration[bot] in #19673
Remove return type annotation from settings serializer to fix OpenAPI schema by @zzstoatzz in #19616
Use history_interval_seconds as parameter name in OpenAPI schema by @desertaxle in #19659

Development & Tidiness 🧹

Turn off dependabot for Vue UI package updates by @desertaxle in #19636
Add weekly release kickoff workflow by @desertaxle in #19661
Migrate prefect.input.actions from sync_compatible to async_dispatch by @zzstoatzz in #19632
Remove auto-generate docs workflow by @desertaxle in #19665

Documentation 📓

Fix incorrect Dockerfile example in "Deploy via Python" guide by @desertaxle in #19653

Full Changelog: 3.6.5...3.6.6