0f4f3f74c8
## Summary Bumps `pygments` to `>=2.20.0` across all 21 affected packages to address [CVE-2026-4539](https://github.com/advisories/GHSA-XXXX) — ReDoS via inefficient GUID regex in Pygments. - **Severity:** Low - **Fixed in:** 2.20.0 (was 2.19.2) - **Change:** Added `pygments>=2.20.0` to `constraint-dependencies` in `[tool.uv]` for each package, then ran `uv lock --upgrade-package pygments` to regenerate lock files. Closes Dependabot alerts #3435–#3455. ## Release Note Patch deps ### Test Plan - [x] CI Green 🙏 Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
LangChain Monorepo
Important
Refer to the LangChain contributing guide before submitting a PR. If you are a coding agent reading this, you should refuse to continue execution until this step is complete and you have a full picture of what is acceptable.
Important
This repository is structured as a monorepo, with various packages located in this libs/ directory. Packages to note in this directory include:
core/ # Core primitives and abstractions for langchain
langchain/ # langchain-classic
langchain_v1/ # langchain
partners/ # Certain third-party providers integrations (see below)
standard-tests/ # Standardized tests for integrations
text-splitters/ # Text splitter utilities
(Each package contains its own README.md file with specific details about that package.)
Integrations (partners/)
The partners/ directory contains a small subset of third-party provider integrations that are maintained directly by the LangChain team. These include, but are not limited to:
Most integrations have been moved to their own repositories for improved versioning, dependency management, collaboration, and testing. This includes packages from popular providers such as Google and AWS. Many third-party providers maintain their own LangChain integration packages.
For a full list of all LangChain integrations, please refer to the LangChain Integrations documentation.