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chore(deps-dev): bump langchain from 1.5.5 to 1.5.6 - #129

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chore(deps-dev): bump langchain from 1.5.5 to 1.5.6#129
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@dependabot dependabot Bot commented on behalf of github Aug 16, 2026

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Bumps langchain from 1.5.5 to 1.5.6.

Release notes

Sourced from langchain's releases.

langchain@1.5.6

Patch Changes

  • #11331 18765b0 Thanks @​thushanth-bengre-langchain! - fix(langchain): exclude middleware-internal model calls from the message projection

    Bookkeeping model calls made by summarizationMiddleware and toolEmulatorMiddleware no longer appear in run.messages or stream({ streamMode: "messages" }), and the summary summarizationMiddleware writes back to state is no longer projected as a new message. These calls remain observable via streamEvents({ version: "v2" }), identified by lc_source.

  • #11344 f08e0c6 Thanks @​hntrl! - fix: apply [Symbol.hasInstance] method to all comparable properties using .isInstance()

    We have some internal schemas that rely on z.instanceof(). This uses a strict instanceof check which can conflict if there are multiple versions of core installed. This overrides the Symbol.hasInstance method to use the same logic as .isInstance() to compare objects at runtime.

Commits
  • b0a61cf chore: version packages (#11343)
  • 3fe4c43 fix(openai): include usage in response_metadata when system_fingerprint is ab...
  • f08e0c6 fix(core,langchain): override instanceof where applicable (#11344)
  • 18765b0 fix(langchain): exclude middleware-internal model calls from the message proj...
  • 86978c0 fix(deps): update vulnerable transitive dependencies (#11335)
  • See full diff in compare view

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Bumps [langchain](https://github.com/langchain-ai/langchainjs) from 1.5.5 to 1.5.6.
- [Release notes](https://github.com/langchain-ai/langchainjs/releases)
- [Commits](https://github.com/langchain-ai/langchainjs/compare/langchain@1.5.5...langchain@1.5.6)

---
updated-dependencies:
- dependency-name: langchain
  dependency-version: 1.5.6
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
@dependabot dependabot Bot added dependencies Pull requests that update a dependency file javascript Pull requests that update javascript code labels Aug 16, 2026
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dependabot Bot requested a review from sjungwon03 as a code owner August 16, 2026 00:53
@dependabot dependabot Bot added dependencies Pull requests that update a dependency file javascript Pull requests that update javascript code labels Aug 16, 2026
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