Pydantic In 2.10.1 the AnyHttpUrl is not hashable any more

The Fix

pip install pydantic==2.10.2

Based on closed pydantic/pydantic issue #10955 · 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%.

Jump to Verify Open PR/Commit

@@ -224,6 +224,9 @@ def __deepcopy__(self, memo: dict) -> Self:
         return self.__class__ is other.__class__ and self._url == other._url
 
+    def __hash__(self) -> int:
+        return hash(self._url)
+

repro.py

pydantic version: 2.10.1
        pydantic-core version: 2.27.1
          pydantic-core build: profile=release pgo=false
                 install path: /Users/ant/miniforge3/envs/apa-proxy/lib/python3.12/site-packages/pydantic
               python version: 3.12.7 | packaged by conda-forge | (main, Oct  4 2024, 15:57:01) [Clang 17.0.6 ]
                     platform: macOS-15.1-arm64-arm-64bit
             related packages: pydantic-settings-2.6.1 fastapi-0.115.5 typing_extensions-4.12.2
                       commit: unknown

verify

Re-run the minimal reproduction on your broken version, then apply the fix and re-run.

fix.md

Option A — Upgrade to fixed release\npip install pydantic==2.10.2\nWhen NOT to use: Do not use this fix if hashability is not required for your application.\n\n

Why This Fix Works in Production

Trigger: import pydantic
Mechanism: Added hashing support for AnyHttpUrl to make it hashable, resolving issue #10955.
Why the fix works: Added hashing support for AnyHttpUrl to make it hashable, resolving issue #10955. (first fixed release: 2.10.2).

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

Shows up under Python 3.12 in real deployments (not just unit tests).
Surfaces as: import pydantic

Proof / Evidence

GitHub issue: #10955
Fix PR: https://github.com/pydantic/pydantic/pull/10975
First fixed release: 2.10.2
Reproduced locally: No (not executed)
Last verified: 2026-02-09
Confidence: 0.75
Did this fix it?: Yes (upstream fix exists)
Own content ratio: 0.48

Discussion

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

Jump to Sources Open on GitHub

“Could it be https://github.com/pydantic/pydantic/pull/10662 made it unhashable?”

@anton-daneyko-ultramarin · 2024-11-23 · source

“Added the PR https://github.com/pydantic/pydantic/pull/10956”

@vivekkeshore · 2024-11-23 · source

Failure Signature (Search String)

import pydantic

Error Message

Stack trace

error.txt

Error Message
-------------
import pydantic
{pydantic.AnyHttpUrl(url="http://hi.ho/")}
Traceback (most recent call last):
  File "<input>", line 1, in <module>
TypeError: unhashable type: 'AnyHttpUrl'

Minimal Reproduction

repro.py

pydantic version: 2.10.1
        pydantic-core version: 2.27.1
          pydantic-core build: profile=release pgo=false
                 install path: /Users/ant/miniforge3/envs/apa-proxy/lib/python3.12/site-packages/pydantic
               python version: 3.12.7 | packaged by conda-forge | (main, Oct  4 2024, 15:57:01) [Clang 17.0.6 ]
                     platform: macOS-15.1-arm64-arm-64bit
             related packages: pydantic-settings-2.6.1 fastapi-0.115.5 typing_extensions-4.12.2
                       commit: unknown

Environment

Python: 3.12
Pydantic: 2

What Broke

Users experienced TypeError when attempting to use AnyHttpUrl in sets or as dictionary keys.

Fix Options (Details)

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

pip install pydantic==2.10.2

When NOT to use: Do not use this fix if hashability is not required for your application.

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

Fix reference: https://github.com/pydantic/pydantic/pull/10975

First fixed release: 2.10.2

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

When NOT to Use This Fix

Do not use this fix if hashability is not required for your application.

Verify Fix

verify

Re-run the minimal reproduction on your broken version, then apply the fix and re-run.

Did This Fix Work in Your Case?

Quick signal helps us prioritize which fixes to verify and improve.

Prevention

Add a CI check that diffs key outputs after upgrades (OpenAPI schema snapshots, JSON payload shapes, CLI output).
Upgrade behind a canary and run integration tests against the canary before 100% rollout.

Version Compatibility Table

Version	Status
2.10.2	Fixed

Related Issues

No related fixes found.

Cluster: pydantic:configuration-error Pydantic hub Pydantic best practices All hubs All clusters

Related clusters: Data consistency OpenAPI schema Serialization

Sources

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

Pydantic In 2.10.1 the AnyHttpUrl is not hashable any more (Fix)