diff --git a/CHANGELOG.md b/CHANGELOG.md
index 81c863478c6e..8aa30fd036f4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Nothing yet!
 
+## [3.4.11] - 2024-09-11
+
+### Fixed
+
+- Allow `anchor-size(…)` in arbitrary values ([#14393](https://github.com/tailwindlabs/tailwindcss/pull/14393))
+
 ## [3.4.10] - 2024-08-13
 
 ### Fixed
@@ -2431,7 +2437,8 @@ No release notes
 
 - Everything!
 
-[unreleased]: https://github.com/tailwindlabs/tailwindcss/compare/v3.4.10...HEAD
+[unreleased]: https://github.com/tailwindlabs/tailwindcss/compare/v3.4.11...HEAD
+[3.4.11]: https://github.com/tailwindlabs/tailwindcss/compare/v3.4.10...v3.4.11
 [3.4.10]: https://github.com/tailwindlabs/tailwindcss/compare/v3.4.9...v3.4.10
 [3.4.9]: https://github.com/tailwindlabs/tailwindcss/compare/v3.4.8...v3.4.9
 [3.4.8]: https://github.com/tailwindlabs/tailwindcss/compare/v3.4.7...v3.4.8
diff --git a/package-lock.json b/package-lock.json
index a7f6e0e1aada..315877375351 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "tailwindcss",
-  "version": "3.4.10",
+  "version": "3.4.11",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "tailwindcss",
-      "version": "3.4.10",
+      "version": "3.4.11",
       "license": "MIT",
       "dependencies": {
         "@alloc/quick-lru": "^5.2.0",
diff --git a/package.json b/package.json
index fd6d3aa6218f..b34a8ad7d524 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "tailwindcss",
-  "version": "3.4.10",
+  "version": "3.4.11",
   "description": "A utility-first CSS framework for rapidly building custom user interfaces.",
   "license": "MIT",
   "main": "lib/index.js",
diff --git a/src/util/dataTypes.js b/src/util/dataTypes.js
index e1db13754e45..9447732938cd 100644
--- a/src/util/dataTypes.js
+++ b/src/util/dataTypes.js
@@ -147,6 +147,8 @@ function normalizeMathOperatorSpacing(value) {
     'repeating-radial-gradient',
     'repeating-linear-gradient',
     'repeating-conic-gradient',
+
+    'anchor-size',
   ]
 
   return value.replace(/(calc|min|max|clamp)\(.+\)/g, (match) => {
diff --git a/tests/normalize-data-types.test.js b/tests/normalize-data-types.test.js
index ba995f43006f..1c302ec28e68 100644
--- a/tests/normalize-data-types.test.js
+++ b/tests/normalize-data-types.test.js
@@ -96,6 +96,9 @@ let table = [
     '[content-start] calc(100% - 1px) [content-end] minmax(1rem,1fr)',
   ],
 
+  // Prevent formatting functions that are not math functions
+  ['w-[calc(anchor-size(width)+8px)]', 'w-[calc(anchor-size(width) + 8px)]'],
+
   // Misc
   ['color(0_0_0/1.0)', 'color(0 0 0/1.0)'],
   ['color(0_0_0_/_1.0)', 'color(0 0 0 / 1.0)'],