diff --git a/CHANGELOG.md b/CHANGELOG.md
index 218dce7f790c..8f1520caed4e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+- Nothing yet!
+
+## [4.1.8] - 2025-05-27
+
 ### Added
 
 - Improve error messages when `@apply` fails ([#18059](https://github.com/tailwindlabs/tailwindcss/pull/18059))
@@ -14,13 +18,15 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 
 - Upgrade: Do not migrate declarations that look like candidates in `<style>` blocks ([#18057](https://github.com/tailwindlabs/tailwindcss/pull/18057), [18068](https://github.com/tailwindlabs/tailwindcss/pull/18068))
-- Upgrade: Improve `pnpm` workspaces support ([#18065](https://github.com/tailwindlabs/tailwindcss/pull/18065))
+- Upgrade: Don't error when looking for `tailwindcss` in pnpm monorepos ([#18065](https://github.com/tailwindlabs/tailwindcss/pull/18065))
+- Upgrade: Don't error when updating dependencies in pnpm monorepos ([#18065](https://github.com/tailwindlabs/tailwindcss/pull/18065))
 - Upgrade: Migrate deprecated `order-none` to `order-0` ([#18126](https://github.com/tailwindlabs/tailwindcss/pull/18126))
 - Support Leptos `class:` attributes when extracting classes ([#18093](https://github.com/tailwindlabs/tailwindcss/pull/18093))
 - Fix "Cannot read properties of undefined" crash on malformed arbitrary value ([#18133](https://github.com/tailwindlabs/tailwindcss/pull/18133))
 - Upgrade: Migrate `-mt-[0px]` to `mt-[0px]` instead of the other way around ([#18154](https://github.com/tailwindlabs/tailwindcss/pull/18154))
 - Fix Haml pre-processing crash when there is no `\n` at the end of the file ([#18155](https://github.com/tailwindlabs/tailwindcss/pull/18155))
 - Ignore `.pnpm-store` folders by default (can be overridden by `@source …` rules) ([#18163](https://github.com/tailwindlabs/tailwindcss/pull/18163))
+- Fix PostCSS crash when calling `toJSON()` ([#18083](https://github.com/tailwindlabs/tailwindcss/pull/18083))
 
 ## [4.1.7] - 2025-05-15
 
@@ -3734,7 +3740,8 @@ No release notes
 
 - Everything!
 
-[unreleased]: https://github.com/tailwindlabs/tailwindcss/compare/v4.1.7...HEAD
+[unreleased]: https://github.com/tailwindlabs/tailwindcss/compare/v4.1.8...HEAD
+[4.1.8]: https://github.com/tailwindlabs/tailwindcss/compare/v4.1.7...v4.1.8
 [4.1.7]: https://github.com/tailwindlabs/tailwindcss/compare/v4.1.6...v4.1.7
 [4.1.6]: https://github.com/tailwindlabs/tailwindcss/compare/v4.1.5...v4.1.6
 [4.1.5]: https://github.com/tailwindlabs/tailwindcss/compare/v4.1.4...v4.1.5
diff --git a/crates/node/npm/android-arm-eabi/package.json b/crates/node/npm/android-arm-eabi/package.json
index d1e1ed3b8834..80277a46addb 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": "4.1.7",
+  "version": "4.1.8",
   "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 214c0c7d7b6a..49cc056f4cd2 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": "4.1.7",
+  "version": "4.1.8",
   "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 913f571a7072..067b65e5b7db 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": "4.1.7",
+  "version": "4.1.8",
   "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 b28792db373e..ab503fc2971f 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": "4.1.7",
+  "version": "4.1.8",
   "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 673eb3db06c6..4424dd3005b6 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": "4.1.7",
+  "version": "4.1.8",
   "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 777dc378a378..b549da20c233 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": "4.1.7",
+  "version": "4.1.8",
   "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 dd0b6d78a9e9..611a512b5328 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": "4.1.7",
+  "version": "4.1.8",
   "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 935ba1e6cb36..bfed5dfc4886 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": "4.1.7",
+  "version": "4.1.8",
   "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 d98af3aed610..3617cb450a33 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": "4.1.7",
+  "version": "4.1.8",
   "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 443d0e4e1c78..07e63bb264e6 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": "4.1.7",
+  "version": "4.1.8",
   "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 b0ddaad54ec7..45ad73738046 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": "4.1.7",
+  "version": "4.1.8",
   "cpu": [
     "wasm32"
   ],
diff --git a/crates/node/npm/win32-arm64-msvc/package.json b/crates/node/npm/win32-arm64-msvc/package.json
index fe23de79dd5e..9da61349457a 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": "4.1.7",
+  "version": "4.1.8",
   "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 9ca8e45ea66c..028366da675e 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": "4.1.7",
+  "version": "4.1.8",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/tailwindlabs/tailwindcss.git",
diff --git a/crates/node/package.json b/crates/node/package.json
index f8e1a4072d8e..7baaab720fb1 100644
--- a/crates/node/package.json
+++ b/crates/node/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/oxide",
-  "version": "4.1.7",
+  "version": "4.1.8",
   "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 700cad815c0c..44ff5e680940 100644
--- a/packages/@tailwindcss-browser/package.json
+++ b/packages/@tailwindcss-browser/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/browser",
-  "version": "4.1.7",
+  "version": "4.1.8",
   "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 a8a814f1370f..0dc588acc4a4 100644
--- a/packages/@tailwindcss-cli/package.json
+++ b/packages/@tailwindcss-cli/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/cli",
-  "version": "4.1.7",
+  "version": "4.1.8",
   "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 f04e2010633b..4787b82e3e0e 100644
--- a/packages/@tailwindcss-node/package.json
+++ b/packages/@tailwindcss-node/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/node",
-  "version": "4.1.7",
+  "version": "4.1.8",
   "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 59eb00ca48af..e8fa56180d5c 100644
--- a/packages/@tailwindcss-postcss/package.json
+++ b/packages/@tailwindcss-postcss/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/postcss",
-  "version": "4.1.7",
+  "version": "4.1.8",
   "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 c6e001c93236..da852d35e603 100644
--- a/packages/@tailwindcss-standalone/package.json
+++ b/packages/@tailwindcss-standalone/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/standalone",
-  "version": "4.1.7",
+  "version": "4.1.8",
   "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 c058cfd5b4ab..4ba6ebdb971f 100644
--- a/packages/@tailwindcss-upgrade/package.json
+++ b/packages/@tailwindcss-upgrade/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/upgrade",
-  "version": "4.1.7",
+  "version": "4.1.8",
   "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 2e768b4293bb..9ae900543fd9 100644
--- a/packages/@tailwindcss-vite/package.json
+++ b/packages/@tailwindcss-vite/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/vite",
-  "version": "4.1.7",
+  "version": "4.1.8",
   "description": "A utility-first CSS framework for rapidly building custom user interfaces.",
   "license": "MIT",
   "repository": {
diff --git a/packages/tailwindcss/package.json b/packages/tailwindcss/package.json
index b236a348d267..3e9df26f0407 100644
--- a/packages/tailwindcss/package.json
+++ b/packages/tailwindcss/package.json
@@ -1,6 +1,6 @@
 {
   "name": "tailwindcss",
-  "version": "4.1.7",
+  "version": "4.1.8",
   "description": "A utility-first CSS framework for rapidly building custom user interfaces.",
   "license": "MIT",
   "repository": {