# Tailwind CSS v3.4.18 — Release & Upgrade Intelligence
- **Product:** Tailwind CSS (https://tailwindcss.com)
- **Version:** v3.4.18
- **Released:** Oct 01, 2025
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/tailwind/updates/v3.4.18/

## Executive Summary (TL;DR)
Tailwind CSS v3.4.18. Source highlight: Improve support for raw `supports-[…]` queries in arbitrary values (#13605)

## Bug Fixes
- Improve support for raw `supports-[…]` queries in arbitrary values (#13605)
- Fix `require.cache` error when loaded through a TypeScript file in Node 22.18+ (#18665)
- Support `import.meta.resolve(…)` in configs for new enough Node.js versions (#18938)
- Allow using newer versions of `postcss-load-config` for better ESM and TypeScript PostCSS config support with the CLI (#18938)
- Remove irrelevant utility rules when matching important classes (#19030)

## Upgrade Command
```bash
npm install --save-exact tailwindcss@3.4.18
```