diff --git a/CHANGELOG.md b/CHANGELOG.md
index f44d17f02..09cd489ce 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,16 +7,23 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+- Nothing yet!
+
+## [4.0.0-alpha.9] - 2024-03-13
+
 ### Added
 
 - Support `@theme reference { … }` for defining theme values without emitting variables ([#13222](https://github.com/tailwindlabs/tailwindcss/pull/13222))
-- Move `optimizeCss` to the packages where it's used ([#13230](https://github.com/tailwindlabs/tailwindcss/pull/13230))
 
 ### Fixed
 
 - Fix incorrect properties in line-clamp utilities ([#13220](https://github.com/tailwindlabs/tailwindcss/pull/13220))
 - Don't rely on existence of `--default-transition-*` variables in `transition-*` utilities ([#13219](https://github.com/tailwindlabs/tailwindcss/pull/13219))
 
+### Changed
+
+- Move `optimizeCss` to the packages where it's used ([#13230](https://github.com/tailwindlabs/tailwindcss/pull/13230))
+
 ## [4.0.0-alpha.8] - 2024-03-11
 
 ### Fixed
diff --git a/oxide/crates/node/npm/android-arm-eabi/package.json b/oxide/crates/node/npm/android-arm-eabi/package.json
index 0eed41505..ef2d1f08d 100644
--- a/oxide/crates/node/npm/android-arm-eabi/package.json
+++ b/oxide/crates/node/npm/android-arm-eabi/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/oxide-android-arm-eabi",
-  "version": "4.0.0-alpha.8",
+  "version": "4.0.0-alpha.9",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/tailwindlabs/tailwindcss.git",
diff --git a/oxide/crates/node/npm/android-arm64/package.json b/oxide/crates/node/npm/android-arm64/package.json
index 57d7fdadc..1d7ad9999 100644
--- a/oxide/crates/node/npm/android-arm64/package.json
+++ b/oxide/crates/node/npm/android-arm64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/oxide-android-arm64",
-  "version": "4.0.0-alpha.8",
+  "version": "4.0.0-alpha.9",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/tailwindlabs/tailwindcss.git",
diff --git a/oxide/crates/node/npm/darwin-arm64/package.json b/oxide/crates/node/npm/darwin-arm64/package.json
index aa0f0e2b4..3b9f483d3 100644
--- a/oxide/crates/node/npm/darwin-arm64/package.json
+++ b/oxide/crates/node/npm/darwin-arm64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/oxide-darwin-arm64",
-  "version": "4.0.0-alpha.8",
+  "version": "4.0.0-alpha.9",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/tailwindlabs/tailwindcss.git",
diff --git a/oxide/crates/node/npm/darwin-x64/package.json b/oxide/crates/node/npm/darwin-x64/package.json
index de125800a..911cbb19d 100644
--- a/oxide/crates/node/npm/darwin-x64/package.json
+++ b/oxide/crates/node/npm/darwin-x64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/oxide-darwin-x64",
-  "version": "4.0.0-alpha.8",
+  "version": "4.0.0-alpha.9",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/tailwindlabs/tailwindcss.git",
diff --git a/oxide/crates/node/npm/freebsd-x64/package.json b/oxide/crates/node/npm/freebsd-x64/package.json
index 9daf90a71..892c2b3ed 100644
--- a/oxide/crates/node/npm/freebsd-x64/package.json
+++ b/oxide/crates/node/npm/freebsd-x64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/oxide-freebsd-x64",
-  "version": "4.0.0-alpha.8",
+  "version": "4.0.0-alpha.9",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/tailwindlabs/tailwindcss.git",
diff --git a/oxide/crates/node/npm/linux-arm-gnueabihf/package.json b/oxide/crates/node/npm/linux-arm-gnueabihf/package.json
index dcbb38adb..289cf4856 100644
--- a/oxide/crates/node/npm/linux-arm-gnueabihf/package.json
+++ b/oxide/crates/node/npm/linux-arm-gnueabihf/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/oxide-linux-arm-gnueabihf",
-  "version": "4.0.0-alpha.8",
+  "version": "4.0.0-alpha.9",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/tailwindlabs/tailwindcss.git",
diff --git a/oxide/crates/node/npm/linux-arm64-gnu/package.json b/oxide/crates/node/npm/linux-arm64-gnu/package.json
index 5ed38db0c..a035c0b5d 100644
--- a/oxide/crates/node/npm/linux-arm64-gnu/package.json
+++ b/oxide/crates/node/npm/linux-arm64-gnu/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/oxide-linux-arm64-gnu",
-  "version": "4.0.0-alpha.8",
+  "version": "4.0.0-alpha.9",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/tailwindlabs/tailwindcss.git",
diff --git a/oxide/crates/node/npm/linux-arm64-musl/package.json b/oxide/crates/node/npm/linux-arm64-musl/package.json
index 7a2009d76..91c4df9c6 100644
--- a/oxide/crates/node/npm/linux-arm64-musl/package.json
+++ b/oxide/crates/node/npm/linux-arm64-musl/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/oxide-linux-arm64-musl",
-  "version": "4.0.0-alpha.8",
+  "version": "4.0.0-alpha.9",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/tailwindlabs/tailwindcss.git",
diff --git a/oxide/crates/node/npm/linux-x64-gnu/package.json b/oxide/crates/node/npm/linux-x64-gnu/package.json
index 0108a8af3..b0ec4b250 100644
--- a/oxide/crates/node/npm/linux-x64-gnu/package.json
+++ b/oxide/crates/node/npm/linux-x64-gnu/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/oxide-linux-x64-gnu",
-  "version": "4.0.0-alpha.8",
+  "version": "4.0.0-alpha.9",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/tailwindlabs/tailwindcss.git",
diff --git a/oxide/crates/node/npm/linux-x64-musl/package.json b/oxide/crates/node/npm/linux-x64-musl/package.json
index cf23c6989..69c1dea06 100644
--- a/oxide/crates/node/npm/linux-x64-musl/package.json
+++ b/oxide/crates/node/npm/linux-x64-musl/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/oxide-linux-x64-musl",
-  "version": "4.0.0-alpha.8",
+  "version": "4.0.0-alpha.9",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/tailwindlabs/tailwindcss.git",
diff --git a/oxide/crates/node/npm/win32-x64-msvc/package.json b/oxide/crates/node/npm/win32-x64-msvc/package.json
index 7e40a455e..75133be41 100644
--- a/oxide/crates/node/npm/win32-x64-msvc/package.json
+++ b/oxide/crates/node/npm/win32-x64-msvc/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/oxide-win32-x64-msvc",
-  "version": "4.0.0-alpha.8",
+  "version": "4.0.0-alpha.9",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/tailwindlabs/tailwindcss.git",
diff --git a/oxide/crates/node/package.json b/oxide/crates/node/package.json
index a650cd1d6..1bbdd4126 100644
--- a/oxide/crates/node/package.json
+++ b/oxide/crates/node/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/oxide",
-  "version": "4.0.0-alpha.8",
+  "version": "4.0.0-alpha.9",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/tailwindlabs/tailwindcss.git",
diff --git a/packages/@tailwindcss-cli/package.json b/packages/@tailwindcss-cli/package.json
index 0f45742bf..17b153485 100644
--- a/packages/@tailwindcss-cli/package.json
+++ b/packages/@tailwindcss-cli/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/cli",
-  "version": "4.0.0-alpha.8",
+  "version": "4.0.0-alpha.9",
   "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 71f3aa518..3b5a3fd49 100644
--- a/packages/@tailwindcss-postcss/package.json
+++ b/packages/@tailwindcss-postcss/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/postcss",
-  "version": "4.0.0-alpha.8",
+  "version": "4.0.0-alpha.9",
   "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-vite/package.json b/packages/@tailwindcss-vite/package.json
index 459879021..28a55974f 100644
--- a/packages/@tailwindcss-vite/package.json
+++ b/packages/@tailwindcss-vite/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/vite",
-  "version": "4.0.0-alpha.8",
+  "version": "4.0.0-alpha.9",
   "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 ebcb49c7d..36842903a 100644
--- a/packages/tailwindcss/package.json
+++ b/packages/tailwindcss/package.json
@@ -1,6 +1,6 @@
 {
   "name": "tailwindcss",
-  "version": "4.0.0-alpha.8",
+  "version": "4.0.0-alpha.9",
   "description": "A utility-first CSS framework for rapidly building custom user interfaces.",
   "license": "MIT",
   "repository": "https://github.com/tailwindlabs/tailwindcss.git",