diff --git a/CHANGELOG.md b/CHANGELOG.md
index dd549036e..fa0edaacd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - _Experimental_: Add `@container-size` utility ([#18901](https://github.com/tailwindlabs/tailwindcss/pull/18901))
 
+## [4.2.1] - 2026-02-23
+
 ### Fixed
 
 - Allow trailing dash in functional utility names for backwards compatibility ([#19696](https://github.com/tailwindlabs/tailwindcss/pull/19696))
@@ -3946,7 +3948,8 @@ No release notes
 
 - Everything!
 
-[unreleased]: https://github.com/tailwindlabs/tailwindcss/compare/v4.2.0...HEAD
+[unreleased]: https://github.com/tailwindlabs/tailwindcss/compare/v4.2.1...HEAD
+[4.2.1]: https://github.com/tailwindlabs/tailwindcss/compare/v4.2.0...v4.2.1
 [4.2.0]: https://github.com/tailwindlabs/tailwindcss/compare/v4.1.18...v4.2.0
 [4.1.18]: https://github.com/tailwindlabs/tailwindcss/compare/v4.1.17...v4.1.18
 [3.4.19]: https://github.com/tailwindlabs/tailwindcss/compare/v3.4.18...v3.4.19
diff --git a/crates/node/npm/android-arm-eabi/package.json b/crates/node/npm/android-arm-eabi/package.json
index cba6fedce..34a1c58a5 100644
--- a/crates/node/npm/android-arm-eabi/package.json
+++ b/crates/node/npm/android-arm-eabi/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/oxide-android-arm-eabi",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/tailwindlabs/tailwindcss.git",
diff --git a/crates/node/npm/android-arm64/package.json b/crates/node/npm/android-arm64/package.json
index 0950b7a03..909ddf914 100644
--- a/crates/node/npm/android-arm64/package.json
+++ b/crates/node/npm/android-arm64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/oxide-android-arm64",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/tailwindlabs/tailwindcss.git",
diff --git a/crates/node/npm/darwin-arm64/package.json b/crates/node/npm/darwin-arm64/package.json
index 423333d61..bfeb71630 100644
--- a/crates/node/npm/darwin-arm64/package.json
+++ b/crates/node/npm/darwin-arm64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/oxide-darwin-arm64",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/tailwindlabs/tailwindcss.git",
diff --git a/crates/node/npm/darwin-x64/package.json b/crates/node/npm/darwin-x64/package.json
index 81007674e..bf4bfe652 100644
--- a/crates/node/npm/darwin-x64/package.json
+++ b/crates/node/npm/darwin-x64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/oxide-darwin-x64",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/tailwindlabs/tailwindcss.git",
diff --git a/crates/node/npm/freebsd-x64/package.json b/crates/node/npm/freebsd-x64/package.json
index 8c25927ed..0619de4ad 100644
--- a/crates/node/npm/freebsd-x64/package.json
+++ b/crates/node/npm/freebsd-x64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/oxide-freebsd-x64",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/tailwindlabs/tailwindcss.git",
diff --git a/crates/node/npm/linux-arm-gnueabihf/package.json b/crates/node/npm/linux-arm-gnueabihf/package.json
index b2a4c0281..cd818b2aa 100644
--- a/crates/node/npm/linux-arm-gnueabihf/package.json
+++ b/crates/node/npm/linux-arm-gnueabihf/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/oxide-linux-arm-gnueabihf",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/tailwindlabs/tailwindcss.git",
diff --git a/crates/node/npm/linux-arm64-gnu/package.json b/crates/node/npm/linux-arm64-gnu/package.json
index e1855f289..9dd325f38 100644
--- a/crates/node/npm/linux-arm64-gnu/package.json
+++ b/crates/node/npm/linux-arm64-gnu/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/oxide-linux-arm64-gnu",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/tailwindlabs/tailwindcss.git",
diff --git a/crates/node/npm/linux-arm64-musl/package.json b/crates/node/npm/linux-arm64-musl/package.json
index c6b96ab8a..991a9c210 100644
--- a/crates/node/npm/linux-arm64-musl/package.json
+++ b/crates/node/npm/linux-arm64-musl/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/oxide-linux-arm64-musl",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/tailwindlabs/tailwindcss.git",
diff --git a/crates/node/npm/linux-x64-gnu/package.json b/crates/node/npm/linux-x64-gnu/package.json
index 2d4fa6fe3..847484f1d 100644
--- a/crates/node/npm/linux-x64-gnu/package.json
+++ b/crates/node/npm/linux-x64-gnu/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/oxide-linux-x64-gnu",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/tailwindlabs/tailwindcss.git",
diff --git a/crates/node/npm/linux-x64-musl/package.json b/crates/node/npm/linux-x64-musl/package.json
index 5855b5d6a..66acddc12 100644
--- a/crates/node/npm/linux-x64-musl/package.json
+++ b/crates/node/npm/linux-x64-musl/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/oxide-linux-x64-musl",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/tailwindlabs/tailwindcss.git",
diff --git a/crates/node/npm/wasm32-wasi/package.json b/crates/node/npm/wasm32-wasi/package.json
index 0c1defca3..25807493d 100644
--- a/crates/node/npm/wasm32-wasi/package.json
+++ b/crates/node/npm/wasm32-wasi/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/oxide-wasm32-wasi",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "cpu": [
     "wasm32"
   ],
diff --git a/crates/node/npm/win32-arm64-msvc/package.json b/crates/node/npm/win32-arm64-msvc/package.json
index 633a4d12e..2dca490b5 100644
--- a/crates/node/npm/win32-arm64-msvc/package.json
+++ b/crates/node/npm/win32-arm64-msvc/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/oxide-win32-arm64-msvc",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/tailwindlabs/tailwindcss.git",
diff --git a/crates/node/npm/win32-x64-msvc/package.json b/crates/node/npm/win32-x64-msvc/package.json
index 99dca35d1..ddcf18026 100644
--- a/crates/node/npm/win32-x64-msvc/package.json
+++ b/crates/node/npm/win32-x64-msvc/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/oxide-win32-x64-msvc",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/tailwindlabs/tailwindcss.git",
diff --git a/crates/node/package.json b/crates/node/package.json
index 6da669ced..f16920029 100644
--- a/crates/node/package.json
+++ b/crates/node/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/oxide",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/tailwindlabs/tailwindcss.git",
diff --git a/packages/@tailwindcss-browser/package.json b/packages/@tailwindcss-browser/package.json
index 8075cfb3f..12442e87e 100644
--- a/packages/@tailwindcss-browser/package.json
+++ b/packages/@tailwindcss-browser/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/browser",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "description": "A utility-first CSS framework for rapidly building custom user interfaces.",
   "license": "MIT",
   "main": "./dist/index.global.js",
diff --git a/packages/@tailwindcss-cli/package.json b/packages/@tailwindcss-cli/package.json
index af488a701..2a91542f1 100644
--- a/packages/@tailwindcss-cli/package.json
+++ b/packages/@tailwindcss-cli/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/cli",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "description": "A utility-first CSS framework for rapidly building custom user interfaces.",
   "license": "MIT",
   "repository": {
diff --git a/packages/@tailwindcss-node/package.json b/packages/@tailwindcss-node/package.json
index 064b53f80..c4d7d4873 100644
--- a/packages/@tailwindcss-node/package.json
+++ b/packages/@tailwindcss-node/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/node",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "description": "A utility-first CSS framework for rapidly building custom user interfaces.",
   "license": "MIT",
   "repository": {
diff --git a/packages/@tailwindcss-postcss/package.json b/packages/@tailwindcss-postcss/package.json
index 5180133e8..6052a08b0 100644
--- a/packages/@tailwindcss-postcss/package.json
+++ b/packages/@tailwindcss-postcss/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/postcss",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "description": "PostCSS plugin for Tailwind CSS, a utility-first CSS framework for rapidly building custom user interfaces",
   "license": "MIT",
   "repository": {
diff --git a/packages/@tailwindcss-standalone/package.json b/packages/@tailwindcss-standalone/package.json
index 50039f29a..b25d5bb9e 100644
--- a/packages/@tailwindcss-standalone/package.json
+++ b/packages/@tailwindcss-standalone/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/standalone",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "private": true,
   "description": "Standalone CLI for Tailwind CSS",
   "license": "MIT",
diff --git a/packages/@tailwindcss-upgrade/package.json b/packages/@tailwindcss-upgrade/package.json
index b8191e23c..cf9de79d6 100644
--- a/packages/@tailwindcss-upgrade/package.json
+++ b/packages/@tailwindcss-upgrade/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/upgrade",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "description": "A utility-first CSS framework for rapidly building custom user interfaces.",
   "license": "MIT",
   "repository": {
diff --git a/packages/@tailwindcss-vite/package.json b/packages/@tailwindcss-vite/package.json
index db0297fc2..24fac1bd4 100644
--- a/packages/@tailwindcss-vite/package.json
+++ b/packages/@tailwindcss-vite/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/vite",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "description": "A utility-first CSS framework for rapidly building custom user interfaces.",
   "license": "MIT",
   "repository": {
diff --git a/packages/@tailwindcss-webpack/package.json b/packages/@tailwindcss-webpack/package.json
index 0fcf0d3f7..ed9206a9e 100644
--- a/packages/@tailwindcss-webpack/package.json
+++ b/packages/@tailwindcss-webpack/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/webpack",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "description": "A webpack loader for Tailwind CSS v4.",
   "license": "MIT",
   "repository": {
diff --git a/packages/tailwindcss/package.json b/packages/tailwindcss/package.json
index abe6da365..f98c80152 100644
--- a/packages/tailwindcss/package.json
+++ b/packages/tailwindcss/package.json
@@ -1,6 +1,6 @@
 {
   "name": "tailwindcss",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "description": "A utility-first CSS framework for rapidly building custom user interfaces.",
   "license": "MIT",
   "repository": {