# Tailwind CSS v4.1.12 — Release & Upgrade Intelligence
- **Product:** Tailwind CSS (https://tailwindcss.com)
- **Version:** v4.1.12
- **Released:** Aug 14, 2025
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/tailwind/updates/v4.1.12/

## Executive Summary (TL;DR)
Tailwind CSS v4.1.12. Source highlight: Don't consider the global important state in `@apply` (#18404)

## Bug Fixes
- Don't consider the global important state in `@apply` (#18404)
- Add missing suggestions for `flex-<number>` utilities (#18642)
- Fix trailing `)` from interfering with extraction in Clojure keywords (#18345)
- Detect classes inside Elixir charlist, word list, and string sigils (#18432)
- Track source locations through `@plugin` and `@config` (#18345)
- Allow boolean values of `process.env.DEBUG` in `@tailwindcss/node` (#18485)

## Upgrade Command
```bash
npm install --save-exact tailwindcss@4.1.12
```