# Open WebUI v0.4.2 — Release & Upgrade Intelligence
- **Product:** Open WebUI (https://openwebui.com)
- **Version:** v0.4.2
- **Released:** Nov 20, 2024
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/open-webui/updates/v0.4.2/

## Executive Summary (TL;DR)
Open WebUI v0.4.2. Source highlight: [0.4.2] - 2024-11-20

## Bug Fixes
- **📁 Knowledge Files Visibility Issue**: Resolved the bug preventing individual files in knowledge collections from displaying when referenced with '#'.
- **🔗 OpenAI Endpoint Prefix**: Fixed the issue where certain OpenAI connections that deviate from the official API spec weren’t working correctly with prefixes.
- **⚔️ Arena Model Access Control**: Corrected an issue where arena model access control settings were not being saved.
- **🔧 Usage Capability Selector**: Fixed the broken usage capabilities selector in the model editor.