The Fix
pip install celery==5.1.0b1
Based on closed celery/celery issue #6623 · PR/commit linked
Production note: This usually shows up under retries/timeouts. Treat it as a side-effect risk until you can verify behavior with a canary + real traffic.
@@ -219,9 +219,6 @@ class Task:
backend = None
- #: If disabled this task won't be registered automatically.
- autoregister = True
-
Option A — Upgrade to fixed release\npip install celery==5.1.0b1\nWhen NOT to use: This fix is not applicable if the `autoregister` functionality is required.\n\n
Why This Fix Works in Production
- Trigger: - [x] I have included all related issues and possible duplicate issues in this issue
- Mechanism: The `autoregister` attribute was misleadingly documented but unused in the codebase
- Why the fix works: Removes the unused `autoregister` property from the Task class, which was misleading in the documentation. (first fixed release: 5.1.0b1).
- If left unfixed, the same config can fail only in production (env differences), causing startup failures or partial feature outages.
Why This Breaks in Prod
- The `autoregister` attribute was misleadingly documented but unused in the codebase
- Production symptom (often without a traceback): - [x] I have included all related issues and possible duplicate issues in this issue
Proof / Evidence
- GitHub issue: #6623
- Fix PR: https://github.com/celery/celery/pull/6624
- First fixed release: 5.1.0b1
- Reproduced locally: No (not executed)
- Last verified: 2026-02-09
- Confidence: 0.85
- Did this fix it?: Yes (upstream fix exists)
- Own content ratio: 0.76
Discussion
High-signal excerpts from the issue thread (symptoms, repros, edge-cases).
“would you mind sending a PR to clean this up?”
“Sure, here you are: https://github.com/celery/celery/pull/6624”
Failure Signature (Search String)
- - [x] I have included all related issues and possible duplicate issues in this issue
- or possible duplicates to this issue as requested by the checklist above.
Copy-friendly signature
Failure Signature
-----------------
- [x] I have included all related issues and possible duplicate issues in this issue
or possible duplicates to this issue as requested by the checklist above.
Error Message
Signature-only (no traceback captured)
Error Message
-------------
- [x] I have included all related issues and possible duplicate issues in this issue
or possible duplicates to this issue as requested by the checklist above.
What Broke
Documentation led users to believe tasks would auto-register, causing confusion.
Why It Broke
The `autoregister` attribute was misleadingly documented but unused in the codebase
Fix Options (Details)
Option A — Upgrade to fixed release Safe default (recommended)
pip install celery==5.1.0b1
Use when you can deploy the upstream fix. It is usually lower-risk than long-lived workarounds.
Fix reference: https://github.com/celery/celery/pull/6624
First fixed release: 5.1.0b1
Last verified: 2026-02-09. Validate in your environment.
When NOT to Use This Fix
- This fix is not applicable if the `autoregister` functionality is required.
Did This Fix Work in Your Case?
Quick signal helps us prioritize which fixes to verify and improve.
Prevention
- Capture the exact failing error string in logs and tests so you can reproduce via a minimal script.
- Pin production dependencies and upgrade only with a reproducible test that hits the failing path.
Version Compatibility Table
| Version | Status |
|---|---|
| 5.1.0b1 | Fixed |
Related Issues
No related fixes found.
Sources
We don’t republish the full GitHub discussion text. Use the links above for context.