# Tailwind CSS v4.1.13 — Release & Upgrade Intelligence
- **Product:** Tailwind CSS (https://tailwindcss.com)
- **Version:** v4.1.13
- **Released:** Sep 04, 2025
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/tailwind/updates/v4.1.13/

## Executive Summary (TL;DR)
Tailwind CSS v4.1.13. Source highlight: Drop warning from browser build (#18731)

## Bug Fixes
- Don't transition `visibility` when using `transition` (#18795)
- Discard matched variants with unknown named values (#18799)
- Discard matched variants with non-string values (#18799)
- Show suggestions for known `matchVariant` values (#18798)
- Replace deprecated `clip` with `clip-path` in `sr-only` (#18769)
- Hide internal fields from completions in `matchUtilities` (#18820)

## Upgrade Command
```bash
npm install --save-exact tailwindcss@4.1.13
```