PrefectHQ/prefect 3.6.11

3.6.11 - It's my generation, baby

on GitHub

Released on January 15, 2026

This release introduces prefect sdk generate a new CLI command that generates fully-typed, custom Python SDKs from the deployments in your workspace or self-hosted server, making it easy to trigger your deployments from other workflows with confidence.

To see how it works, check out the Prefect docs. This functionality is currently in beta, so try it out and open a GitHub issue if you have feedback!

New Features 🎉

• Add prefect sdk generate CLI command for generating custom deployment SDKs from existing deployments by @desertaxle in #20150, #20158, #20167, #20172, #20173

Enhancements ➕➕

• Add JSON output to prefect variable ls CLI command by @xeniumcode in #20192
• Add JSON output to prefect global-concurrency-limit ls CLI command by @xeniumcode in #20194
• Add JSON output to prefect artifact CLI commands by @xeniumcode in #20193
• Add JSON output to prefect block ls CLI command by @xeniumcode in #20195
• Add JSON output to prefect block type ls CLI command by @xeniumcode in #20196
• Add JSON output to prefect deployment schedule CLI commands by @xeniumcode in #20197
• Add JSON output to prefect deployment CLI commands by @xeniumcode in #20198
• Migrate pause, suspend, resume, and run_input from @sync_compatible to @async_dispatch by @devin-ai-integration[bot] in #20178
• Add force parameter to ChangeFlowRunState and flow_run_id Jinja filter by @zzstoatzz in #20112
• Link automation.action.* events to automation.triggered event by @chrisguidry in #20227
• Add DISABLED to client DeploymentStatus enum for Cloud compatibility by @chrisguidry in #20244

Bug Fixes 🐞

• Fix flow run cancellation handling bugs by @joshuastagner in #20143
• Fix race condition in filesystem lease storage with atomic writes by @devin-ai-integration[bot] in #20153
• Add task keys to docket calls in API handlers to prevent duplicate execution by @desertaxle in #20210
• Support ISO 8601 duration strings for interval schedules in prefect.yaml by @zzstoatzz in #20238
• Disable Docket result storage to prevent memory bloat by @desertaxle in #20253
• Preserve the updated column value of deployments when marking them as ready by @vkrot-innio in #19936

Development & Tidiness 🧹

• Add arun_deployment and replace @sync_compatible with @async_dispatch by @desertaxle in #20160
• Patch correct method in test_concurrency_respects_timeout by @devin-ai-integration[bot] in #20185
• Fix flaky test by reducing slot_decay_per_second to prevent race condition by @devin-ai-integration[bot] in #20208
• Remove incorrect docstrings from CLI ls commands by @zzstoatzz in #20206
• Add Claude command frontmatter by @zzstoatzz in #20224
• Enable multi-checker type safety tests with mypy, pyright, and ty by @zzstoatzz in #20159
• Migrate concurrency/v1 from @sync_compatible to @async_dispatch by @zzstoatzz in #20225
• Migrate blocks/core.py from @sync_compatible to @async_dispatch by @devin-ai-integration[bot] in #20226
• Stale item cleanup enhancements by @bdalpe in #20145
• Add plan label to exclude from release notes by @zzstoatzz in #20182
• Auto-label PRs that touch plans/ directory by @zzstoatzz in #20183
• Disable migrations and block registration for multi-worker test by @devin-ai-integration[bot] in #20179
• Fix plan label to only apply when all changed files are in plans/ by @desertaxle in #20207

Documentation 📓

• Add ECS base job template customization guide by @zzstoatzz in #20249
• Fix MDX parsing error in events CLI documentation by @desertaxle in #20252
• Add documentation for prefect sdk generate CLI by @desertaxle in #20241

Full Changelog: 3.6.10...3.6.11