# uBlock Origin 1.74.1b1

- Product: uBlock Origin (https://whatsnew.fyi/product/ublock-origin)
- Vendor: Raymond Hill
- Date: 2026-08-31
- Version: 1.74.1b1
- Original notes: https://github.com/gorhill/uBlock/releases/tag/1.74.1b1
- Permalink: https://whatsnew.fyi/product/ublock-origin/releases/1.74.1b1
- Labels: Pre-release

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **added** — Add mpegdash-prune scriptlet
- **changed** — Improve xmlPrune scriptlet
- **changed** — Improve procedural operator :matches-path()

- [Add `mpegdash-prune` scriptlet](https://github.com/gorhill/uBlock/commit/323b4ce279)
- [Improve `xmlPrune` scriptlet](https://github.com/gorhill/uBlock/commit/1235e4dd27)
- [Improve procedural operator `:matches-path()`](https://github.com/gorhill/uBlock/commit/43d3c74ce7)

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[Commits to Master Since This Release](https://github.com/gorhill/uBlock/compare/1.74.1b1...master)

###### How to Install the Developer Build:

- **Firefox**: Download the build from [uBlock0_1.74.1b1.firefox.signed.xpi](https://github.com/gorhill/uBlock/releases/download/1.74.1b1/uBlock0_1.74.1b1.firefox.signed.xpi)
  uBO works best on Gecko-based browsers, check out [why](https://github.com/gorhill/uBlock/wiki/uBlock-Origin-works-best-on-Firefox)
- **Chromium**: Install directly from [signed CRX package](https://github.com/gorhill/uBlock/releases/download/1.74.1b1/uBlock0_1.74.1b1.chromium.crx)