# Tailwind CSS v4.0.6 — Release & Upgrade Intelligence
- **Product:** Tailwind CSS (https://tailwindcss.com)
- **Version:** v4.0.6
- **Released:** Feb 10, 2025
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/tailwind/updates/v4.0.6/

## Executive Summary (TL;DR)
Tailwind CSS v4.0.6. Source highlight: Revert change to no longer include theme variables that aren't used in compiled CSS (#16403)

## Bug Fixes
- Revert change to no longer include theme variables that aren't used in compiled CSS (#16403)

## Upgrade Command
```bash
npm install --save-exact tailwindcss@4.0.6
```