[dependabot]

Updates the requirements on fastapi, httpx2 and pydantic-settings to permit the latest version.
Updates fastapi to 0.162.0

Release notes

Sourced from fastapi's releases.

0.162.0

Omitted bool and bool | None form fields now use their declared defaults or produce missing-field errors, consistent with other fields and Pydantic behavior. FastAPI no longer infers False for omitted booleans. This applies to individual form parameters, form models, and unions of form models.

Omitted boolean model fields are excluded from model_dump(exclude_unset=True), and their defaults no longer count as submitted fields during union selection. Default factories and validate_default follow the usual rules.

For HTML checkboxes, declare a boolean with a default of False. See Boolean Form Fields.

Breaking Changes

• 🐛 Restore default handling for omitted boolean form fields. PR #16605 by @​tiangolo.

Commits

• 7a0a3f0 🔖 Release version 0.162.0 (#16606)
• b56f7c6 📝 Update release notes
• f02ef49 🐛 Restore default handling for omitted boolean form fields (#16605)
• 69ddc2b 🔖 Release version 0.161.1 (#16599)
• 0cafa07 📝 Update release notes
• f90d036 🐛 Fix OpenAPI schemas for standalone nullable form unions (#16598)
• 80c8742 🔖 Release version 0.161.0 (#16597)
• b105209 📝 Update release notes
• e42ac0a ✨ Add support for combining unions of form models (#16596)
• addd077 🔖 Release version 0.160.0 (#16595)
• Additional commits viewable in compare view

Updates httpx2 to 2.16.0

Release notes

Sourced from httpx2's releases.

v2.16.0

Highlights

🍪 Faster requests with large cookie jars

Building the Cookie header no longer scans every cookie in the jar. The client reuses its jar instead of copying it on every request and redirect (#1284), only looks up the domains that can match the request host, and skips the expired cookie sweep until a cookie is due (#1285). With 1,000 cookies across 500 domains, building the Cookie header is about 18 times faster.

Cookies from different domains are now sent from the least to the most specific domain, for example .example.org before sub.example.org, instead of in the order the domains were added. Cookies with longer paths still come first.

httpx2

Changed

• Look up only the cookie domains that match the request host, and skip the expired cookie sweep until a cookie is due. With 1,000 cookies across 500 domains, building the Cookie header is about 18 times faster. Cookies from different domains are now sent from the least to the most specific domain (#1285).

Fixed

• Reuse the client cookie jar instead of copying it on every request and redirect. A custom policy set with client.cookies.jar.set_policy() now applies to outgoing requests (#1284).

httpcore2

No changes since 2.15.1. Version bumped to stay in lockstep with httpx2.

Full Changelog: pydantic/httpx2@v2.15.1...v2.16.0

Changelog

Sourced from httpx2's changelog.

2.16.0 (October 21st, 2026)

Changed

• Look up only the cookie domains that match the request host, and skip the expired cookie sweep until a cookie is due. With 1,000 cookies across 500 domains, building the Cookie header is about 18 times faster. Cookies from different domains are now sent from the least to the most specific domain. (#1285)

Fixed

• Reuse the client cookie jar instead of copying it on every request and redirect. A custom policy set with client.cookies.jar.set_policy() now applies to outgoing requests. (#1284)

2.15.1 (October 19th, 2026)

Fixed

• Configure the default SSL context once on Linux, instead of on every handshake. With OpenSSL older than 3.4, CPU usage grew over the lifetime of a reused client. (#1253)

2.15.0 (October 19th, 2026)

Removed

• Drop support for Python 3.10. (#1274)

2.14.0 (October 18th, 2026)

Added

• Match IP CIDR ranges, like 192.168.0.0/16 and [fe80::]/10, in NO_PROXY and mounts. Requests to any address in the range now bypass the proxy; previously only the network address itself did. (#1165)
• Accept bracketed IPv6 addresses, like [::1] and [::1]:8080, in NO_PROXY. (#1267)

Changed

• Raise InvalidURL for a mounts key with an IP host followed by anything other than a valid CIDR prefix, like all://10.0.0.0/33. (#1165)

Fixed

• Ignore NO_PROXY entries that cannot be parsed, instead of raising InvalidURL when the client is created. (#1267)
• Import httpx2 on FIPS-enforced Python builds without hashlib.md5. DigestAuth raises ProtocolError when the server asks for an unavailable algorithm. (#1130)
• Handle reads after an ASGI WebSocket app shuts down, instead of leaking anyio exceptions. (#1233)
• Stop the sync WebSocket session from hanging on exit when its event queue is full. (#1123)

... (truncated)

Commits

• 6bfbf29 Prepare version 2.16.0 (#1286)
• a1e461e Look up only matching cookie domains when building the Cookie header (#1285)
• fc6ff89 Reuse the client cookie jar instead of copying it per request (#1284)
• 6dd59b9 Prepare version 2.15.1 (#1279)
• 7715bf0 Configure the default Linux SSL context once instead of per handshake (#1253)
• 6078596 Prepare version 2.15.0 (#1278)
• 5b26c25 Drop support for Python 3.10 (#1274)
• See full diff in compare view

Updates pydantic-settings to 2.16.1

Release notes

Sourced from pydantic-settings's releases.

v2.16.1

Highlights

This patch release fixes two CLI regressions introduced in 2.16.0.

Bug fixes

CLI

• Fixed-length tuple positionals such as CliPositionalArg[tuple[int, int]] and NamedTuples are single-valued again (#1069). Since 2.16.0 they were treated as variadic, so a CLI either refused to start with a SettingsError or put the wrong argument into the tuple. Variable-length tuples (tuple[int, ...] and bare Tuple) are still variadic.
• A field typed as an alias of a list of dicts, e.g. type ListOfDict = list[dict[str, int]], accepts a JSON list again (#1049). Since 2.16.0, --xx '[{"a":1},{"b":2}]' was merged into the single dict {"a": 1, "b": 2} and failed validation.

What's Changed

• Harden CI by @​Viicos in pydantic/pydantic-settings#1044
• Keep list of dicts CLI values as lists by @​hramezani in pydantic/pydantic-settings#1049
• Keep fixed-length tuple CLI positionals single-valued by @​hramezani in pydantic/pydantic-settings#1069
• Prepare release 2.16.1 by @​hramezani in pydantic/pydantic-settings#1087
• build(deps): bump the python-packages group with 3 updates by @​dependabot[bot] in pydantic/pydantic-settings#1056

Full Changelog: pydantic/pydantic-settings@v2.16.0...v2.16.1

Commits

• 4e286e2 Prepare release 2.16.1 (#1087)
• 993b59e Keep fixed-length tuple CLI positionals single-valued (#1069)
• f651a7a Keep list of dicts CLI values as lists (#1049)
• ecf7d90 Harden CI (#1044)
• See full diff in compare view

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