# Tailwind CSS v2.2.9 — Release & Upgrade Intelligence
- **Product:** Tailwind CSS (https://tailwindcss.com)
- **Version:** v2.2.9
- **Released:** Sep 06, 2021
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/tailwind/updates/v2.2.9/

## Executive Summary (TL;DR)
Tailwind CSS v2.2.9. Source highlight: JIT: Fix `@apply`ing utilities that contain variants + the important modifier (#4854)

## Bug Fixes
- JIT: Fix `@apply`ing utilities that contain variants + the important modifier (#4854)
- JIT: Don't strip "null" when parsing tracked file paths (#5008)
- Pin `clean-css` to v5.1.4 to fix empty CSS variables in CDN builds (#5338)

## Upgrade Command
```bash
npm install --save-exact tailwindcss@2.2.9
```