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[//]: # (dependabot-start) ⚠️ **Dependabot is rebasing this PR** ⚠️ Rebasing might not happen immediately, so don't worry if this takes some time. Note: if you make any changes to this PR yourself, they will take precedence over the rebase. --- [//]: # (dependabot-end) Bumps [bleach](https://github.com/mozilla/bleach) from 6.2.0 to 6.4.0. <details> <summary>Changelog</summary> <p><em>Sourced from <a href="https://github.com/mozilla/bleach/blob/main/CHANGES">bleach's changelog</a>.</em></p> <blockquote> <h2>Version 6.4.0 (June 5th, 2026)</h2> <p><strong>NOTE: 2026-06-05: Bleach is no longer maintained. There will be no future releases including for security issues.</strong> See issue: <code><https://github.com/mozilla/bleach/issues/698></code>__</p> <p><strong>Backwards incompatible changes</strong></p> <ul> <li>Dropped support for pypy 3.10. (<a href="https://redirect.github.com/mozilla/bleach/issues/764">#764</a>)</li> </ul> <p><strong>Security fixes</strong></p> <ul> <li> <p>Fix bug 2023812 / GHSA-8rfp-98v4-mmr6.</p> <p>Fix XSS issue with sanitize_uri_value where disallowed schemes with Unicode invisible characters wouldn't be rejected.</p> <p>For example::</p> <p>import bleach payload1 = '<!-- raw HTML omitted -->Click<!-- raw HTML omitted -->' result1 = bleach.clean(payload1) print(repr(result1))</p> <p>outputs::</p> <p>'<!-- raw HTML omitted -->Click<!-- raw HTML omitted -->'</p> <p>See the advisory for details.</p> </li> <li> <p>Fix GHSA-gj48-438w-jh9v.</p> <p>Fix issue where URI sanitization wasn't happening in formaction attributes.</p> <p>See the advisory for details.</p> </li> </ul> <p><strong>Bug fixes</strong></p> <ul> <li> <p>Add support for pypy 3.11. (<a href="https://redirect.github.com/mozilla/bleach/issues/764">#764</a>)</p> </li> <li> <p>Drop version max in tinycss2 pin. (<a href="https://redirect.github.com/mozilla/bleach/issues/772">#772</a>)</p> <p>This removes one of the things we had to keep checking and updating. Users now own the responsibility for correctness with the version of tinycss2 they're using.</p> </li> </ul> <h2>Version 6.3.0 (October 27th, 2025)</h2> <!-- raw HTML omitted --> </blockquote> <p>... (truncated)</p> </details> <details> <summary>Commits</summary> <ul> <li><a href="f0355a7af0"><code>f0355a7</code></a> fix: fix last release date in CHANGES</li> <li><a href="ae4e8a2670"><code>ae4e8a2</code></a> chore: bleach 6.4.0 and final release</li> <li><a href="970df58e9f"><code>970df58</code></a> fix: uri-sanitization in formaction attributes</li> <li><a href="7c4867c323"><code>7c4867c</code></a> fix: xss bypass in allowed protocol test using unicode invisible characters</li> <li><a href="913ab75992"><code>913ab75</code></a> fix: reduce redundancy in workflow jobs</li> <li><a href="218c15af45"><code>218c15a</code></a> fix: rework pip caching</li> <li><a href="4f0b097bf8"><code>4f0b097</code></a> fix: fix tox platform restrictions</li> <li><a href="e95a79d07b"><code>e95a79d</code></a> chore: update pytest</li> <li><a href="91539d4e80"><code>91539d4</code></a> Bump actions/cache from 5.0.3 to 5.0.4</li> <li><a href="cd47b4ce49"><code>cd47b4c</code></a> fix: handle left-angle-bracket that's not a tag (<a href="https://redirect.github.com/mozilla/bleach/issues/733">#733</a>)</li> <li>Additional commits viewable in <a href="https://github.com/mozilla/bleach/compare/v6.2.0...v6.4.0">compare view</a></li> </ul> </details> <br /> [](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores) Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting `@dependabot rebase`. [//]: # (dependabot-automerge-start) [//]: # (dependabot-automerge-end) --- <details> <summary>Dependabot commands and options</summary> <br /> You can trigger Dependabot actions by commenting on this PR: - `@dependabot rebase` will rebase this PR - `@dependabot recreate` will recreate this PR, overwriting any edits that have been made to it - `@dependabot show <dependency name> ignore conditions` will show all of the ignore conditions of the specified dependency - `@dependabot ignore this major version` will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself) - `@dependabot ignore this minor version` will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself) - `@dependabot ignore this dependency` will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself) You can disable automated security fix PRs for this repo from the [Security Alerts page](https://github.com/langchain-ai/langchain/network/alerts). </details> Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
🦜✂️ LangChain Text Splitters
Looking for the JS/TS version? Check out LangChain.js.
Quick Install
uv add langchain-text-splitters
🤔 What is this?
LangChain Text Splitters contains utilities for splitting into chunks a wide variety of text documents.
📖 Documentation
For full documentation, see the API reference.
📕 Releases & Versioning
See our Releases and Versioning policies.
We encourage pinning your version to a specific version in order to avoid breaking your CI when we publish new tests. We recommend upgrading to the latest version periodically to make sure you have the latest tests.
Not pinning your version will ensure you always have the latest tests, but it may also break your CI if we introduce tests that your integration doesn't pass.
💁 Contributing
As an open-source project in a rapidly developing field, we are extremely open to contributions, whether it be in the form of a new feature, improved infrastructure, or better documentation.
For detailed information on how to contribute, see the Contributing Guide.
Resources
- LangChain Academy — comprehensive, free courses on LangChain libraries and products, made by the LangChain team
- Code of Conduct — community guidelines and standards