# Tailwind CSS v3.4.5 — Release & Upgrade Intelligence
- **Product:** Tailwind CSS (https://tailwindcss.com)
- **Version:** v3.4.5
- **Released:** Jul 15, 2024
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/tailwind/updates/v3.4.5/

## Executive Summary (TL;DR)
Tailwind CSS v3.4.5. Source highlight: Disable automatic `var()` injection for anchor properties (#13826)

## Bug Fixes
- Disable automatic `var()` injection for anchor properties (#13826)
- Use no value instead of `blur(0px)` for `backdrop-blur-none` and `blur-none` utilities (#13830)
- Add `.mts` and `.cts` config file detection (#13940)
- Don't generate utilities like `px-1` unnecessarily when using utilities like `px-1.5` (#13959)
- Always generate `-webkit-backdrop-filter` for `backdrop-*` utilities (#13997)

## Upgrade Command
```bash
npm install --save-exact tailwindcss@3.4.5
```