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Upgrade reqwest to 0.13#18550

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Upgrade reqwest to 0.13#18550
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@zanieb zanieb commented Mar 18, 2026

The following user-facing changes are included here:

  • aws-lc is used instead of ring for a cryptography backend
    • Expands our certificate signature algorithm support to include ECDSA_P256_SHA512, ECDSA_P384_SHA512, ECDSA_P521_SHA256, ECDSA_P521_SHA384, and ECDSA_P521_SHA512
  • --native-tls is deprecated in favor of a new --system-certs flag, avoiding confusion with the TLS implementation used (we use rustls not native-tls, see prior confusion at Consider using the system SSL library, i.e., OpenSSL instead of rusttls / ring #11595)
  • NASM is a new build requirement on Windows, it is required by aws-lc on x86-64 and i386
  • rustls-platform-verifier is used instead of rustls-native-certs for system certificate verification
    • On macOS, certificate validation is now delegated to Security.framework (SecTrust). Performance when using --system-certs is improved by avoiding exporting and parsing all the certificates from the keychain at startup.
    • On Windows, certificate validation is now delegated to CertGetCertificateChain and CertVerifyCertificateChainPolicy
    • On Linux, certificate validation should be approximately unchanged
    • Some previously failing chains may succeed, and some previously accepted chains may fail; generally, this should result in behavior closer matching browsers and other native applications
    • macOS and Windows may now perform live OCSP fetches for early revocation, which could add latency to some requests
  • Empty SSL_CERT_FILE values are ignored (for consistency with SSL_CERT_DIR)

The following internal changes are included here:

This is a replacement of #17543 with an updated description. See that pull request for prior discussion. I've made the following changes from the initial approach there:

  • Previously, the native-tls TLS implementation was added which included an OpenSSL build. We don't currently use the native-tls implementation, but the --native-tls flag there was erroneously updated to enable it.
  • Previously, there was a --tls-backend flag to toggle between native-tls and rustls. Since we currently always use rustls, this is deferred to future work (if we need it at all).
  • Previously, there were unintentional breaking changes to SSL_CERT_FILE and SSL_CERT_DIR handling, including merging with the base certificates instead of replacing them, dropping support for OpenSSL hash-named certificate files, skipping deduplication of certificates. Here, we retain use of rustls-native-certs for loading certificates from the system as it handles these edge cases.

Closes #17427

salmonsd added 30 commits March 9, 2026 11:22
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zanieb commented Mar 19, 2026

We chatted briefly in Discord — I think OCSP is not something we can control but should be fairly limited.

@zanieb zanieb temporarily deployed to uv-test-registries March 19, 2026 19:04 — with GitHub Actions Inactive
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LGTM! I agree with @geofft about the OSCP checks not being optimal but also agreed that there's nothing we can do about that (at least until rustls exposes a generic API for turning that knob on each platform verifier).

Comment thread CONTRIBUTING.md Outdated
Comment thread crates/uv-client/src/base_client.rs Outdated
Comment thread crates/uv-client/src/base_client.rs Outdated
@zanieb zanieb temporarily deployed to uv-test-publish March 20, 2026 14:21 — with GitHub Actions Inactive
@zanieb zanieb temporarily deployed to uv-test-registries March 20, 2026 14:21 — with GitHub Actions Inactive
Co-authored-by: Zanie Blue <contact@zanie.dev>
@zanieb zanieb force-pushed the zb/upgrade-reqwest branch from 34dc0bc to a5ef05c Compare March 20, 2026 19:41
Comment thread CONTRIBUTING.md
sudo dnf install gcc
```

On Windows, [NASM](https://www.nasm.us/) is required for building the TLS backend (`aws-lc-sys`). If
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Should we expose the cargo feature for user and distributors that don't want to compile NASM?

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Hm I thought the feature was already enabled, let me double check...

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@zanieb zanieb temporarily deployed to uv-test-publish March 23, 2026 18:06 — with GitHub Actions Inactive
@zanieb zanieb merged commit b6854d7 into main Mar 23, 2026
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@zanieb zanieb deleted the zb/upgrade-reqwest branch March 23, 2026 18:22
@zanieb zanieb added the breaking A breaking change label Mar 23, 2026
konstin pushed a commit that referenced this pull request Mar 24, 2026
The following user-facing changes are included here:

- `aws-lc` is used instead of `ring` for a cryptography backend
- Expands our certificate signature algorithm support to include
ECDSA_P256_SHA512, ECDSA_P384_SHA512, ECDSA_P521_SHA256,
ECDSA_P521_SHA384, and ECDSA_P521_SHA512
- `--native-tls` is deprecated in favor of a new `--system-certs` flag,
avoiding confusion with the TLS implementation used (we use `rustls` not
`native-tls`, see prior confusion at
#11595)
- NASM is a new build requirement on Windows, it is required by `aws-lc`
on x86-64 and i386
- `rustls-platform-verifier` is used instead of `rustls-native-certs`
for system certificate verification
- On macOS, certificate validation is now delegated to
`Security.framework` (`SecTrust`). Performance when using
`--system-certs` is improved by avoiding exporting and parsing all the
certificates from the keychain at startup.
- On Windows, certificate validation is now delegated to
`CertGetCertificateChain` and `CertVerifyCertificateChainPolicy`
    - On Linux, certificate validation should be approximately unchanged
- Some previously failing chains may succeed, and some previously
accepted chains may fail; generally, this should result in behavior
closer matching browsers and other native applications
- macOS and Windows may now perform live OCSP fetches for early
revocation, which could add latency to some requests
- Empty `SSL_CERT_FILE` values are ignored (for consistency with
`SSL_CERT_DIR`)

The following internal changes are included here:

- Certificate loading has been refactored to use a newtype with helper
methods
- The certificate tests have been rewritten
- We use `webpki-root-certs` instead of `webpki-roots`, see
#17543 (comment)
- We request `identity` encoding for range requests, see
astral-sh/async_http_range_reader#3 (comment)
- Various dependencies (including forks) updates to versions which use
reqwest 0.13+

This is a replacement of #17543 with an updated description. See that
pull request for prior discussion. I've made the following changes from
the initial approach there:

- Previously, the `native-tls` TLS implementation was added which
included an OpenSSL build. We don't currently use the `native-tls`
implementation, but the `--native-tls` flag there was erroneously
updated to enable it.
- Previously, there was a `--tls-backend` flag to toggle between
`native-tls` and `rustls`. Since we currently always use `rustls`, this
is deferred to future work (if we need it at all).
- Previously, there were unintentional breaking changes to
`SSL_CERT_FILE` and `SSL_CERT_DIR` handling, including merging with the
base certificates instead of replacing them, dropping support for
OpenSSL hash-named certificate files, skipping deduplication of
certificates. Here, we retain use of `rustls-native-certs` for loading
certificates from the system as it handles these edge cases.


Closes #17427

---------

Co-authored-by: salmonsd <22984014+salmonsd@users.noreply.github.com>
tmeijn pushed a commit to tmeijn/dotfiles that referenced this pull request Apr 2, 2026
This MR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [uv](https://github.com/astral-sh/uv) | minor | `0.10.9` → `0.11.3` |

MR created with the help of [el-capitano/tools/renovate-bot](https://gitlab.com/el-capitano/tools/renovate-bot).

**Proposed changes to behavior should be submitted there as MRs.**

---

### Release Notes

<details>
<summary>astral-sh/uv (uv)</summary>

### [`v0.11.3`](https://github.com/astral-sh/uv/blob/HEAD/CHANGELOG.md#0113)

[Compare Source](astral-sh/uv@0.11.2...0.11.3)

Released on 2026-04-01.

##### Enhancements

- Add progress bar for hashing phase in uv publish ([#&#8203;18752](astral-sh/uv#18752))
- Add support for ROCm 7.2 ([#&#8203;18730](astral-sh/uv#18730))
- Emit abi3t tags for every abi3 version ([#&#8203;18777](astral-sh/uv#18777))
- Expand `uv workspace metadata` with dependency information from the lock ([#&#8203;18356](astral-sh/uv#18356))
- Implement support for PEP 803 ([#&#8203;18767](astral-sh/uv#18767))
- Pretty-print platform in built wheel errors ([#&#8203;18738](astral-sh/uv#18738))
- Publish installers to `/installers/uv/latest` on the mirror ([#&#8203;18725](astral-sh/uv#18725))
- Show free-threaded Python in built-wheel errors ([#&#8203;18740](astral-sh/uv#18740))

##### Preview features

- Add `--ignore` and `--ignore-until-fixed` to `uv audit` ([#&#8203;18737](astral-sh/uv#18737))

##### Bug fixes

- Bump simple API cache ([#&#8203;18797](astral-sh/uv#18797))
- Don't drop `blake2b` hashes ([#&#8203;18794](astral-sh/uv#18794))
- Handle broken range request implementations ([#&#8203;18780](astral-sh/uv#18780))
- Remove `powerpc64-unknown-linux-gnu` from release build targets ([#&#8203;18800](astral-sh/uv#18800))
- Respect dependency metadata overrides in `uv pip check` ([#&#8203;18742](astral-sh/uv#18742))
- Support debug CPython ABI tags in environment compatibility ([#&#8203;18739](astral-sh/uv#18739))

##### Documentation

- Document `false` opt-out for `exclude-newer-package` ([#&#8203;18768](astral-sh/uv#18768), [#&#8203;18803](astral-sh/uv#18803))

### [`v0.11.2`](https://github.com/astral-sh/uv/blob/HEAD/CHANGELOG.md#0112)

[Compare Source](astral-sh/uv@0.11.1...0.11.2)

Released on 2026-03-26.

##### Enhancements

- Add a dedicated Windows PE editing error ([#&#8203;18710](astral-sh/uv#18710))
- Make `uv self update` fetch the manifest from the mirror first ([#&#8203;18679](astral-sh/uv#18679))
- Use uv reqwest client for self update ([#&#8203;17982](astral-sh/uv#17982))
- Show `uv self update` success and failure messages with `--quiet` ([#&#8203;18645](astral-sh/uv#18645))

##### Preview features

- Evaluate extras and groups when determining auditable packages ([#&#8203;18511](astral-sh/uv#18511))

##### Bug fixes

- Skip redundant project configuration parsing for `uv run` ([#&#8203;17890](astral-sh/uv#17890))

### [`v0.11.1`](https://github.com/astral-sh/uv/blob/HEAD/CHANGELOG.md#0111)

[Compare Source](astral-sh/uv@0.11.0...0.11.1)

Released on 2026-03-24.

##### Bug fixes

- Add missing hash verification for `riscv64gc-unknown-linux-musl` ([#&#8203;18686](astral-sh/uv#18686))
- Fallback to direct download when direct URL streaming is unsupported ([#&#8203;18688](astral-sh/uv#18688))
- Revert treating 'Dynamic' values as case-insensitive ([#&#8203;18692](astral-sh/uv#18692))
- Remove torchdata from list of packages to source from the PyTorch index ([#&#8203;18703](astral-sh/uv#18703))
- Special-case `==` Python version request ranges ([#&#8203;9697](astral-sh/uv#9697))

##### Documentation

- Cover `--python <dir>` in "Using arbitrary Python environments" ([#&#8203;6457](astral-sh/uv#6457))
- Fix version annotations for `PS_MODULE_PATH` and `UV_WORKING_DIR` ([#&#8203;18691](astral-sh/uv#18691))

### [`v0.11.0`](https://github.com/astral-sh/uv/blob/HEAD/CHANGELOG.md#0110)

[Compare Source](astral-sh/uv@0.10.12...0.11.0)

Released on 2026-03-23.

##### Breaking changes

This release includes changes to the networking stack used by uv. While we think that breakage will be rare, it is possible that these changes will result in the rejection of certificates previously trusted by uv so we have marked the change as breaking out of an abundance of caution.

The changes are largely driven by the upgrade of reqwest, which powers uv's HTTP clients, to [v0.13](https://seanmonstar.com/blog/reqwest-v013-rustls-default/) which included some breaking changes to TLS certificate verification.

The following changes are included:

- [`rustls-platform-verifier`](https://github.com/rustls/rustls-platform-verifier) is used instead of [`rustls-native-certs`](https://github.com/rustls/rustls-native-certs) and [`webpki`](https://github.com/rustls/webpki) for certificate verification

  **This change should have no effect unless you are using the `native-tls` option to enable reading system certificates.**

  `rustls-platform-verifier` delegates to the system for certificate validation (e.g., `Security.framework` on macOS) instead of eagerly loading certificates from the system and verifying them via `webpki`. The effects of this change will vary based on the operating system. In general, uv's certificate validation should now be more consistent with browsers and other native applications. However, this is the most likely cause of breaking changes in this release. Some previously failing certificate chains may succeed, and some previously accepted certificate chains may fail. In either case, we expect the validation to be more correct and welcome reports of regressions.

  In particular, because more responsibility for validating the certificate is transferred to your system's security library, some features like [CA constraints](https://support.apple.com/en-us/103255) or [revocation of certificates](https://en.wikipedia.org/wiki/Certificate_revocation) via OCSP and CRLs may now be used.

  This change should improve performance when using system certificate on macOS, as uv no longer needs to load all certificates from the keychain at startup.
- [`aws-lc`](https://github.com/aws/aws-lc) is used instead of `ring` for a cryptography backend

  There should not be breaking changes from this change. We expect this to expand support for certificate signature algorithms.
- `--native-tls` is deprecated in favor of a new `--system-certs` flag

  The `--native-tls` flag is still usable and has identical behavior to `--system-certs.`

  This change was made to reduce confusion about the TLS implementation uv uses. uv always uses `rustls` not `native-tls`.
- Building uv on x86-64 and i686 Windows requires NASM

  NASM is required by `aws-lc`. If not found on the system, a prebuilt blob provided by `aws-lc-sys` will be used.

  If you are not building uv from source, this change has no effect.

  See the [CONTRIBUTING](https://github.com/astral-sh/uv/blob/b6854d77bfd0cb78157fecaf8b30126c6f16bc11/CONTRIBUTING.md#setup) guide for details.
- Empty `SSL_CERT_FILE` values are ignored (for consistency with `SSL_CERT_DIR`)

See [#&#8203;18550](astral-sh/uv#18550) for details.

##### Python

- Enable frame pointers for improved profiling on Linux x86-64 and aarch64

See the [python-build-standalone release notes](https://github.com/astral-sh/python-build-standalone/releases/20260320) for details.

##### Enhancements

- Treat 'Dynamic' values as case-insensitive ([#&#8203;18669](astral-sh/uv#18669))
- Use a dedicated error for invalid cache control headers ([#&#8203;18657](astral-sh/uv#18657))
- Enable checksum verification in the generated installer script ([#&#8203;18625](astral-sh/uv#18625))

##### Preview features

- Add `--service-format` and `--service-url` to `uv audit` ([#&#8203;18571](astral-sh/uv#18571))

##### Performance

- Avoid holding flat index lock across indexes ([#&#8203;18659](astral-sh/uv#18659))

##### Bug fixes

- Find the dynamic linker on the file system when sniffing binaries fails ([#&#8203;18457](astral-sh/uv#18457))
- Fix export of conflicting workspace members with dependencies ([#&#8203;18666](astral-sh/uv#18666))
- Respect installed settings in `uv tool list --outdated` ([#&#8203;18586](astral-sh/uv#18586))
- Treat paths originating as PEP 508 URLs which contain expanded variables as relative ([#&#8203;18680](astral-sh/uv#18680))
- Fix `uv export` for workspace member packages with conflicts ([#&#8203;18635](astral-sh/uv#18635))
- Continue to alternative authentication providers when the pyx store has no token ([#&#8203;18425](astral-sh/uv#18425))
- Use redacted URLs for log messages in cached client ([#&#8203;18599](astral-sh/uv#18599))

##### Documentation

- Add details on Linux versions to the platform policy ([#&#8203;18574](astral-sh/uv#18574))
- Clarify `FLASH_ATTENTION_SKIP_CUDA_BUILD` guidance for `flash-attn` installs ([#&#8203;18473](astral-sh/uv#18473))
- Split the dependency bots page into two separate pages ([#&#8203;18597](astral-sh/uv#18597))
- Split the alternative indexes page into separate pages ([#&#8203;18607](astral-sh/uv#18607))

### [`v0.10.12`](https://github.com/astral-sh/uv/blob/HEAD/CHANGELOG.md#01012)

[Compare Source](astral-sh/uv@0.10.11...0.10.12)

Released on 2026-03-19.

##### Python

- Add pypy 3.11.15 ([#&#8203;18468](astral-sh/uv#18468))
- Add support for using Python 3.6 interpreters ([#&#8203;18454](astral-sh/uv#18454))

##### Enhancements

- Include uv's target triple in version report ([#&#8203;18520](astral-sh/uv#18520))
- Allow comma separated values in `--no-emit-package` ([#&#8203;18565](astral-sh/uv#18565))

##### Preview features

- Show `uv audit` in the CLI help ([#&#8203;18540](astral-sh/uv#18540))

##### Bug fixes

- Improve reporting of managed interpreter symlinks in `uv python list` ([#&#8203;18459](astral-sh/uv#18459))
- Preserve end-of-line comments on previous entries when removing dependencies ([#&#8203;18557](astral-sh/uv#18557))
- Treat abi3 wheel Python version as a lower bound ([#&#8203;18536](astral-sh/uv#18536))
- Detect hard-float support on aarch64 kernels running armv7 userspace ([#&#8203;18530](astral-sh/uv#18530))

##### Documentation

- Add Python 3.15 to supported versions ([#&#8203;18552](astral-sh/uv#18552))
- Adjust the PyPy note ([#&#8203;18548](astral-sh/uv#18548))
- Move Pyodide to Tier 2 in the Python support policy ([#&#8203;18561](astral-sh/uv#18561))
- Move Rust and Python version support out of the Platform support policy ([#&#8203;18535](astral-sh/uv#18535))
- Update Docker guide with changes from `uv-docker-example` ([#&#8203;18558](astral-sh/uv#18558))
- Update the Python version policy ([#&#8203;18559](astral-sh/uv#18559))

### [`v0.10.11`](https://github.com/astral-sh/uv/blob/HEAD/CHANGELOG.md#01011)

[Compare Source](astral-sh/uv@0.10.10...0.10.11)

Released on 2026-03-16.

##### Enhancements

- Fetch Ruff release metadata from an Astral mirror ([#&#8203;18358](astral-sh/uv#18358))
- Use PEP 639 license metadata for uv itself ([#&#8203;16477](astral-sh/uv#16477))

##### Performance

- Improve distribution id performance ([#&#8203;18486](astral-sh/uv#18486))

##### Bug fixes

- Allow `--project` to refer to a `pyproject.toml` directly and reduce to a warning on other files ([#&#8203;18513](astral-sh/uv#18513))
- Disable `SYSTEM_VERSION_COMPAT` when querying interpreters on macOS ([#&#8203;18452](astral-sh/uv#18452))
- Enforce available distributions for supported environments ([#&#8203;18451](astral-sh/uv#18451))
- Fix `uv sync --active` recreating active environments when `UV_PYTHON_INSTALL_DIR` is relative ([#&#8203;18398](astral-sh/uv#18398))

##### Documentation

- Add missing `-o requirements.txt` in `uv pip compile` example ([#&#8203;12308](astral-sh/uv#12308))
- Link to organization security policy ([#&#8203;18449](astral-sh/uv#18449))
- Link to the AI policy in the contributing guide ([#&#8203;18448](astral-sh/uv#18448))

### [`v0.10.10`](https://github.com/astral-sh/uv/blob/HEAD/CHANGELOG.md#01010)

[Compare Source](astral-sh/uv@0.10.9...0.10.10)

Released on 2026-03-13.

##### Python

- Add CPython 3.15.0a7 ([#&#8203;18403](astral-sh/uv#18403))

##### Enhancements

- Add `--outdated` flag to `uv tool list` ([#&#8203;18318](astral-sh/uv#18318))
- Add riscv64 musl target to build-release-binaries workflow ([#&#8203;18228](astral-sh/uv#18228))
- Fetch Ruff from an Astral mirror ([#&#8203;18286](astral-sh/uv#18286))
- Improve error handling for platform detection in Python downloads ([#&#8203;18453](astral-sh/uv#18453))
- Warn if `--project` directory does not exist ([#&#8203;17714](astral-sh/uv#17714))
- Warn when workspace member scripts are skipped due to missing build system ([#&#8203;18389](astral-sh/uv#18389))
- Update build backend versions used in `uv init` ([#&#8203;18417](astral-sh/uv#18417))
- Log explicit config file path in verbose output ([#&#8203;18353](astral-sh/uv#18353))
- Make `uv cache clear` an alias of `uv cache clean` ([#&#8203;18420](astral-sh/uv#18420))
- Reject invalid classifiers, warn on license classifiers in `uv_build` ([#&#8203;18419](astral-sh/uv#18419))

##### Preview features

- Add links to `uv audit` output ([#&#8203;18392](astral-sh/uv#18392))
- Output/report formatting for `uv audit` ([#&#8203;18193](astral-sh/uv#18193))
- Switch to batched OSV queries for `uv audit` ([#&#8203;18394](astral-sh/uv#18394))

##### Bug fixes

- Avoid sharing version metadata across indexes ([#&#8203;18373](astral-sh/uv#18373))
- Bump zlib-rs to 0.6.2 to fix panic on decompression of large wheels on Windows ([#&#8203;18362](astral-sh/uv#18362))
- Filter out unsupported environment wheels ([#&#8203;18445](astral-sh/uv#18445))
- Preserve absolute/relative paths in lockfiles ([#&#8203;18176](astral-sh/uv#18176))
- Recreate Python environments under `uv tool install --force` ([#&#8203;18399](astral-sh/uv#18399))
- Respect timestamp and other cache keys in cached environments ([#&#8203;18396](astral-sh/uv#18396))
- Simplify selected extra markers in `uv export` ([#&#8203;18433](astral-sh/uv#18433))
- Send pyx mint-token requests with a proper `Content-Type` ([#&#8203;18334](astral-sh/uv#18334))
- Fix Windows operating system and version reporting ([#&#8203;18383](astral-sh/uv#18383))

##### Documentation

- Update the platform support policy with a tier 3 section including freebsd and 32-bit windows ([#&#8203;18345](astral-sh/uv#18345))

</details>

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Upgrading reqwest to 0.13.1 to improve TLS experience

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