# LuLu v4.2.1 — Version 4.2.1

- Product: LuLu (https://whatsnew.fyi/product/lulu)
- Vendor: Objective-See
- Date: 2026-02-01
- Version: v4.2.1
- Original notes: https://github.com/objective-see/LuLu/releases/tag/v4.2.1
- Permalink: https://whatsnew.fyi/product/lulu/releases/v4.2.1
- Labels: Platforms: macOS

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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- **changed** — Rule duration is now relative rather than a fixed end time
- **added** — User-created rules can now be exported and imported
- **changed** — Flows associated with processes that have exited are now denied
- **changed** — UI improvements

🆕 You can now sponsor **LuLu**/**Objective-See Foundation**:

[![](https://img.shields.io/static/v1?label=Sponsor&message=%E2%9D%A4&logo=GitHub&color=%23fe8e86)](https://github.com/sponsors/objective-see)

##### LuLu v4.2.1

☑️ UI Improvements  #812, etc.

☑️ Rule duration, now relative (rather than a fixed end time) #811, #813

☑️ Rules subset (user-created rules) can now be exported/imported #814

☑️ Flows associated with processes that have exited, now denied (mahalo Igor) 

🔐 Disk Image Hash (`SHA256`):
LuLu_4.2.1.dmg: `ED580410F38E8CC8F17CD4724182F9B7A6BBB1524797FF8E8019428A285244A0`