diff --git a/packages/tailwindcss-language-server/package.json b/packages/tailwindcss-language-server/package.json
index 2824c883..dd41332d 100644
--- a/packages/tailwindcss-language-server/package.json
+++ b/packages/tailwindcss-language-server/package.json
@@ -82,7 +82,7 @@
     "rimraf": "3.0.2",
     "stack-trace": "0.0.10",
     "tailwindcss": "3.4.17",
-    "tailwindcss-v4": "npm:tailwindcss@4.0.0",
+    "tailwindcss-v4": "npm:tailwindcss@4.0.6",
     "tsconfck": "^3.1.4",
     "tsconfig-paths": "^4.2.0",
     "typescript": "5.3.3",
diff --git a/packages/tailwindcss-language-server/src/project-locator.ts b/packages/tailwindcss-language-server/src/project-locator.ts
index f3884fe1..64f7329b 100644
--- a/packages/tailwindcss-language-server/src/project-locator.ts
+++ b/packages/tailwindcss-language-server/src/project-locator.ts
@@ -16,7 +16,7 @@ import { extractSourceDirectives, resolveCssImports } from './css'
 import { normalizeDriveLetter, normalizePath, pathToFileURL } from './utils'
 import postcss from 'postcss'
 import * as oxide from './oxide'
-import { analyzeStylesheet, TailwindStylesheet, TailwindVersion } from './version-guesser'
+import { analyzeStylesheet, TailwindStylesheet } from './version-guesser'
 
 export interface ProjectConfig {
   /** The folder that contains the project */
diff --git a/packages/tailwindcss-language-server/tests/colors/colors.test.js b/packages/tailwindcss-language-server/tests/colors/colors.test.js
index f39ee1d9..5016bacc 100644
--- a/packages/tailwindcss-language-server/tests/colors/colors.test.js
+++ b/packages/tailwindcss-language-server/tests/colors/colors.test.js
@@ -334,7 +334,7 @@ defineTest({
 
     expect(c.project).toMatchObject({
       tailwind: {
-        version: '4.0.0',
+        version: '4.0.6',
         isDefaultVersion: true,
       },
     })
@@ -373,7 +373,7 @@ defineTest({
 
     expect(c.project).toMatchObject({
       tailwind: {
-        version: '4.0.0',
+        version: '4.0.6',
         isDefaultVersion: true,
       },
     })
diff --git a/packages/tailwindcss-language-server/tests/env/v4.test.js b/packages/tailwindcss-language-server/tests/env/v4.test.js
index 37d83cd1..65fc25c7 100644
--- a/packages/tailwindcss-language-server/tests/env/v4.test.js
+++ b/packages/tailwindcss-language-server/tests/env/v4.test.js
@@ -21,7 +21,7 @@ defineTest({
 
     expect(c.project).toMatchObject({
       tailwind: {
-        version: '4.0.0',
+        version: '4.0.6',
         isDefaultVersion: true,
       },
     })
@@ -58,7 +58,7 @@ defineTest({
       },
     })
 
-    expect(completion.items.length).toBe(12286)
+    expect(completion.items.length).toBe(12288)
   },
 })
 
@@ -109,7 +109,7 @@ defineTest({
 
     expect(c.project).toMatchObject({
       tailwind: {
-        version: '4.0.0',
+        version: '4.0.6',
         isDefaultVersion: true,
       },
     })
@@ -315,7 +315,7 @@ defineTest({
 
     expect(c.project).toMatchObject({
       tailwind: {
-        version: '4.0.0',
+        version: '4.0.6',
         isDefaultVersion: true,
       },
     })
diff --git a/packages/vscode-tailwindcss/CHANGELOG.md b/packages/vscode-tailwindcss/CHANGELOG.md
index 3a513c0a..8896fc88 100644
--- a/packages/vscode-tailwindcss/CHANGELOG.md
+++ b/packages/vscode-tailwindcss/CHANGELOG.md
@@ -6,6 +6,7 @@
 - Ignore comments when matching class attributes ([#1202](https://github.com/tailwindlabs/tailwindcss-intellisense/pull/1202))
 - Show source diagnostics when imports contain a layer ([#1204](https://github.com/tailwindlabs/tailwindcss-intellisense/pull/1204))
 - Only detect project roots in v4 when using certain CSS features ([#1205](https://github.com/tailwindlabs/tailwindcss-intellisense/pull/1205))
+- Update Tailwind CSS v4 version to v4.0.6 ([#1207](https://github.com/tailwindlabs/tailwindcss-intellisense/pull/1207))
 
 ## 0.14.4
 
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 4014f6c3..f1048aaa 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -180,8 +180,8 @@ importers:
         specifier: 3.4.17
         version: 3.4.17
       tailwindcss-v4:
-        specifier: npm:tailwindcss@4.0.0
-        version: tailwindcss@4.0.0
+        specifier: npm:tailwindcss@4.0.6
+        version: tailwindcss@4.0.6
       tsconfck:
         specifier: ^3.1.4
         version: 3.1.4(typescript@5.3.3)
@@ -2494,8 +2494,8 @@ packages:
     engines: {node: '>=14.0.0'}
     hasBin: true
 
-  tailwindcss@4.0.0:
-    resolution: {integrity: sha512-ULRPI3A+e39T7pSaf1xoi58AqqJxVCLg8F/uM5A3FadUbnyDTgltVnXJvdkTjwCOGA6NazqHVcwPJC5h2vRYVQ==}
+  tailwindcss@4.0.6:
+    resolution: {integrity: sha512-mysewHYJKaXgNOW6pp5xon/emCsfAMnO8WMaGKZZ35fomnR/T5gYnRg2/yRTTrtXiEl1tiVkeRt0eMO6HxEZqw==}
 
   tapable@2.2.1:
     resolution: {integrity: sha512-GNzQvQTOIP6RyTfE2Qxb8ZVlNmw0n88vp1szwWRimP02mnTsx3Wtn5qRdqY9w2XduFNUgvOwhNnQsjwCp+kqaQ==}
@@ -4844,7 +4844,7 @@ snapshots:
     transitivePeerDependencies:
       - ts-node
 
-  tailwindcss@4.0.0: {}
+  tailwindcss@4.0.6: {}
 
   tapable@2.2.1: {}