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deps(python): update fastmcp requirement from >=3.3.1 to >=3.4.5 in /mcp_server - #112

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deps(python): update fastmcp requirement from >=3.3.1 to >=3.4.5 in /mcp_server#112
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Updates the requirements on fastmcp to permit the latest version.

Release notes

Sourced from fastmcp's releases.

v3.4.5: Key Change

FastMCP 3.4.5 collects five fixes for the 3.x line. The one that prompted it: a single Ed25519 key in a JWKS — which Rauthy, Ory Hydra, and some Keycloak configurations publish by default — made JWTVerifier reject every token, including ones correctly signed by supported keys in the same set.

What's Changed

Fixes 🐞

Docs 📚

New Contributors

Full Changelog: PrefectHQ/fastmcp@v3.4.4...v3.4.5

Changelog

Sourced from fastmcp's changelog.


title: "Changelog" icon: "list-check" rss: true tag: NEW

v4.0.0b1: Fourgone Conclusion

FastMCP 4 makes stateful MCP applications work on the sessionless 2026-07-28 protocol while one deployment continues serving handshake-era clients. Tools can ask follow-up questions across requests, preserve authenticated user state, and move long-running work into background tasks without sticky sessions. Protocol extensions and enterprise identity become first-class surfaces, and most FastMCP 3 servers upgrade unchanged even though MCP Python SDK v2 rewrote the engine underneath them. Server-initiated sampling and roots are removed from the server API; the upgrade guide covers their replacements.

New Features 🎉

  • Migrate to MCP Python SDK v2 by @​jlowin in #4437
  • Teach fastmcp.Client the modern protocol: mode negotiation, MRTR driver, response cache by @​jlowin in #4450
  • Forward-port Hugging Face auth provider by @​jlowin in #4475
  • Add server-side identity assertion (SEP-990 ID-JAG) by @​jlowin in #4483
  • Add guard-mode multi-round-trip tools (SEP-2322) by @​jlowin in #4544
  • Add FastMCP-native server extension API (SEP-2133) by @​jlowin in #4602
  • Add stateless session state (UserSession / SessionId) by @​jlowin in #4604
  • Add background tasks via the io.modelcontextprotocol/tasks extension (SEP-2663) by @​jlowin in #4603

Breaking Changes ⚠️

Enhancements ✨

... (truncated)

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Updates the requirements on [fastmcp](https://github.com/PrefectHQ/fastmcp) to permit the latest version.
- [Release notes](https://github.com/PrefectHQ/fastmcp/releases)
- [Changelog](https://github.com/PrefectHQ/fastmcp/blob/main/docs/changelog.mdx)
- [Commits](PrefectHQ/fastmcp@v3.3.1...v3.4.5)

---
updated-dependencies:
- dependency-name: fastmcp
  dependency-version: 3.4.5
  dependency-type: direct:production
...

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@dependabot dependabot Bot added the dependencies Pull requests that update a dependency file label Jul 31, 2026
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