# n8n n8n@2.45.5 — Release & Upgrade Intelligence
- **Product:** n8n (https://n8n.io)
- **Version:** n8n@2.45.5
- **Released:** Oct 28, 2026
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/n8n/updates/n8n-2.45.5/

## Executive Summary (TL;DR)
n8n n8n@2.45.5. Source highlight: **core:** Keep the ExpressionError name in minified builds (#42309) (b3192c6)

## New Features
- **core:** Make custom OTel attribute key prefixes configurable (#42193) (6071b12)

## Bug Fixes
- **core:** Keep the ExpressionError name in minified builds (#42309) (b3192c6)
- **core:** Keep undefined values in QuickJS expression results (#42264) (532f645)
- **editor:** Align carets within split buttons (#42203) (61cbfea)
- **editor:** Improve first load speed (#41987) (8b6bdbb)
- **editor:** Match Evals Run Test button colors (#42200) (f594853)
- **editor:** Remove underlines from breadcrumb links (#42201) (127d65a)