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Bumps langchain from 1.1.5 to 1.2.3.

Release notes

Sourced from langchain's releases.

langchain@1.2.3

Patch Changes

langchain@1.2.1

Patch Changes

langchain@1.2.0

Minor Changes

langchain@1.1.6

Patch Changes

Commits

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Bumps [langchain](https://github.com/langchain-ai/langchainjs) from 1.1.5 to 1.2.3.
- [Release notes](https://github.com/langchain-ai/langchainjs/releases)
- [Commits](https://github.com/langchain-ai/langchainjs/compare/langchain@1.1.5...langchain@1.2.3)

---
updated-dependencies:
- dependency-name: langchain
  dependency-version: 1.2.3
  dependency-type: direct:production
...

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 Dec 23, 2025
@diberry diberry requested a review from Copilot January 5, 2026 21:40
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Pull request overview

This PR bumps the langchain package from version 1.1.5 to 1.2.3, incorporating security hardening for the load function and various bug fixes. The update also transitively updates @langchain/core from 1.1.4 to 1.1.8 and introduces langsmith 0.4.2 as a dependency.

Key Changes:

  • Updated langchain dependency from ^1.1.0 to ^1.2.3 in the langgraph-agent package
  • Transitive update of @langchain/core from 1.1.4 to 1.1.8
  • Introduction of langsmith 0.4.2 with updated peer dependencies and semver range (>=0.4.0 <1.0.0)

Reviewed changes

Copilot reviewed 1 out of 2 changed files in this pull request and generated 1 comment.

File Description
packages-v1/langgraph-agent/package.json Updates langchain dependency version from ^1.1.0 to ^1.2.3
package-lock.json Reflects the langchain version bump, updates @langchain/core to 1.1.8, introduces langsmith 0.4.2, and reorganizes peer dependency declarations across multiple packages

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Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
@diberry diberry merged commit cd806f6 into main Jan 5, 2026
4 checks passed
@dependabot dependabot bot deleted the dependabot/npm_and_yarn/langchain-1.2.3 branch January 5, 2026 21:44
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