# Tailwind CSS v4.1.1 — Release & Upgrade Intelligence
- **Product:** Tailwind CSS (https://tailwindcss.com)
- **Version:** v4.1.1
- **Released:** Apr 02, 2025
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/tailwind/updates/v4.1.1/

## Executive Summary (TL;DR)
Tailwind CSS v4.1.1. Source highlight: Disable padding in `@source inline(…)` brace expansion (#17491)

## Bug Fixes
- Disable padding in `@source inline(…)` brace expansion (#17491)
- Inject polyfills after `@import` and body-less `@layer` (#17493)
- Ensure `@tailwindcss/cli` does not contain an import for `jiti` (#17502)

## Upgrade Command
```bash
npm install --save-exact tailwindcss@4.1.1
```