# LuLu v4.5.1 — Version 4.5.1

- Product: LuLu (https://whatsnew.fyi/product/lulu)
- Vendor: Objective-See
- Date: 2026-08-05
- Version: v4.5.1
- Original notes: https://github.com/objective-see/LuLu/releases/tag/v4.5.1
- Permalink: https://whatsnew.fyi/product/lulu/releases/v4.5.1
- 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** — Improved 'Add Rules' window logic with better handling of deleted/invalid rules
- **changed** — Improved startup with new checkin logic to handle upgrade cases better

🆕 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 v4.5.1
☑️ Improved 'Add Rules' window logic
Better handing of deleted/invalid rules.

☑️ Improved startup (#912)
New checkin logic to handle upgrade cases better.

🔐 Disk Image Hash (`SHA256`):
LuLu_4.5.1.dmg: `98F4D3427F4C6FCCF9680FED22879BE90A5AE81E80EB8616C1D758755B6BB624`