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@dependabot dependabot bot commented on behalf of github Jan 26, 2026

Bumps langchain from 1.0.3 to 1.2.7.

Release notes

Sourced from langchain's releases.

langchain-core==1.2.7

Changes since langchain-core==1.2.6

release: langchain-core 1.2.7 (#34678) fix: don't trace injected args only found in signature (#34670) feat(core): add more file extensions to ignore in HTML link extraction (#34552) refactor(core): improve docstrings for HTML link extraction utilities (#34550) test(core): add edge case for empty examples in LengthBasedExampleSelector (#34641) fix(core): fix strict schema generation for functions with optional args (#34599) feat(core): support custom message separator in get_buffer_string() (#34569) refactor(core): add warning for fallback GPT-2 tokenizer usage (#34621) fix(core,langchain): use get_buffer_string for message summarization (#34607) test(core): add tests for formatting utils and merge functions (#34511) fix(core): strip message IDs from cache keys using model_copy (#33915) fix(core): exclude injected args from tool schema (#34582) refactor(core): select chunk_id via ranking and remove extra allocation (#34588)

langchain==1.2.7

Changes since langchain==1.2.6

release: langchain 1.2.7 (#34854) feat: dynamic tool registration via middleware (#34842) fix(langchain): strip trailing whitespace from the summarization prompt (#34835) fix(langchain): improve grammar in SummarizationMiddleware system prompt (#34834) docs(langchain): nit (#34788) chore(deps): bump the uv group across 5 directories with 5 updates (#34785) chore(deps): bump the uv group across 8 directories with 6 updates (#34773) chore(core, langchain): add version consistency check pre-commit hooks (#34782)

langchain-core==1.2.6

Changes since langchain-core==1.2.5

release(core): 1.2.6 (#34586) chore(core): Update LangChainTracer to use Pydantic v2 methods (#34541) docs(core): add docstrings to internal helper functions (#34525) docs(core): refresh content.py docstrings (#34546) chore(deps): bump mypy to v1.19 and ruff to v1.14 (#34521) refactor(core): fix some missing generic types (#31658) style(core): add ruff RUF012 rule (#34492) fix(core): support (message class, template) tuples in ChatPromptTemplate.from_messages (#33989) test(core): add regression test for list-index $ref resolution (#34097) fix(core): fix callback manager merge mixing handlers (#32028) (#33617) style: add ruff ISC001 rule (#34493) style(core): fix mypy no-any-return violations (#34204) docs(core): image url docstring enhancement (#34488) test(core): URL-encode bgColor parameter in mermaid.ink API calls (#34466) style(core): fix some noqa: ARG rules (#34437) fix(core): URL-encode bgColor in mermaid API calls (#34461) perf(core): move origin type map to module level in function_calling.py (#34481) style(core): add ruff rules TC (#34476)

... (truncated)

Commits
  • cc72a8c release: langchain 1.2.7 (#34854)
  • bc86201 feat: dynamic tool registration via middleware (#34842)
  • d899681 feat(core): add XML format option for get_buffer_string (#34802)
  • 689ce96 docs: add missing module-level docstrings to partner integrations (#34838)
  • a1df299 fix(langchain): strip trailing whitespace from the summarization prompt (#34835)
  • 1d7a269 fix(langchain): improve grammar in SummarizationMiddleware system prompt (#...
  • 5fa708f chore(core): relax packaging constraints (#34832)
  • 6603838 chore(deps-dev): bump setuptools from 67.8.0 to 78.1.1 in /libs/core in the u...
  • 9b8c211 test(fireworks): fix model name (#34819)
  • a6e8c83 chore(deps): bump langgraph-checkpoint from 2.1.2 to 3.0.0 in /libs/cli in th...
  • Additional commits viewable in compare view

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Bumps [langchain](https://github.com/langchain-ai/langchain) from 1.0.3 to 1.2.7.
- [Release notes](https://github.com/langchain-ai/langchain/releases)
- [Commits](langchain-ai/langchain@langchain==1.0.3...langchain==1.2.7)

---
updated-dependencies:
- dependency-name: langchain
  dependency-version: 1.2.7
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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@dependabot dependabot bot added dependencies Pull requests that update a dependency file python Pull requests that update python code labels Jan 26, 2026
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