# Tailwind CSS v3.4.12 — Release & Upgrade Intelligence
- **Product:** Tailwind CSS (https://tailwindcss.com)
- **Version:** v3.4.12
- **Released:** Sep 17, 2024
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/tailwind/updates/v3.4.12/

## Executive Summary (TL;DR)
Tailwind CSS v3.4.12. Source highlight: Ensure using `@apply` with utilities that use `@defaults` works with rules defined in the base layer when using `optimizeUniversalDefaults` (#14427)

## Bug Fixes
- Ensure using `@apply` with utilities that use `@defaults` works with rules defined in the base layer when using `optimizeUniversalDefaults` (#14427)

## Upgrade Command
```bash
npm install --save-exact tailwindcss@3.4.12
```