uvicorn CHANGELOG.md versions have wrong markdown (Fix)

The Fix

Upgrade to version 0.17.6 or later.

Based on closed Kludex/uvicorn issue #1389 · PR/commit linked

Production note: Most teams hit this during upgrades or environment changes. Roll out with a canary and smoke critical endpoints (health, OpenAPI/docs) before 100%.

Open PR/Commit

@@ -1,6 +1,6 @@
 # Change Log
 
-### 0.17.5 - 2022-02-16
+## 0.17.5 - 2022-02-16

fix.md

Option A — Upgrade to fixed release\nUpgrade to version 0.17.6 or later.\nWhen NOT to use: This fix is not applicable if the markdown style is already correct.\n\n

Why This Fix Works in Production

Trigger: CHANGELOG.md versions have wrong markdown
Mechanism: Fixed the title style in CHANGELOG.md to be compatible with Renovate.
Why the fix works: Fixed the title style in CHANGELOG.md to be compatible with Renovate. (first fixed release: 0.17.6).

Production impact:

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

Production symptom (often without a traceback): CHANGELOG.md versions have wrong markdown

Proof / Evidence

GitHub issue: #1389
Fix PR: https://github.com/kludex/uvicorn/pull/1390
First fixed release: 0.17.6
Reproduced locally: No (not executed)
Last verified: 2026-02-09
Confidence: 0.85
Did this fix it?: Yes (upstream fix exists)
Own content ratio: 0.73

Discussion

High-signal excerpts from the issue thread (symptoms, repros, edge-cases).

Jump to Sources Open on GitHub

“### Discussed in https://github.com/encode/uvicorn/discussions/1388 <div type='discussions-op-text'> <sup>Originally posted by **HarrySky** February 23, 2022</sup> Hey, just noticed, that Renovate can't parse your CHANGELOG.md since 0.17.4”

Issue thread · issue description · source

Failure Signature (Search String)

CHANGELOG.md versions have wrong markdown
Hey, just noticed, that Renovate can't parse your `CHANGELOG.md` since `0.17.4` version :sweat_smile:

Copy-friendly signature

signature.txt

Failure Signature
-----------------
CHANGELOG.md versions have wrong markdown
Hey, just noticed, that Renovate can't parse your `CHANGELOG.md` since `0.17.4` version :sweat_smile:

Error Message

Signature-only (no traceback captured)

error.txt

Error Message
-------------
CHANGELOG.md versions have wrong markdown
Hey, just noticed, that Renovate can't parse your `CHANGELOG.md` since `0.17.4` version :sweat_smile:

Fix Options (Details)

Option A — Upgrade to fixed release Safe default (recommended)

Upgrade to version 0.17.6 or later.

When NOT to use: This fix is not applicable if the markdown style is already correct.

Use when you can deploy the upstream fix. It is usually lower-risk than long-lived workarounds.

Fix reference: https://github.com/kludex/uvicorn/pull/1390

First fixed release: 0.17.6

Last verified: 2026-02-09. Validate in your environment.

When NOT to Use This Fix

This fix is not applicable if the markdown style is already correct.

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
0.17.6	Fixed

Related Issues

No related fixes found.

Cluster: uvicorn:configuration-error All hubs All clusters

Related clusters: Data consistency Race condition SSL handshake

Sources

We don’t republish the full GitHub discussion text. Use the links above for context.