diff --git a/packages/tailwindcss-language-server/package.json b/packages/tailwindcss-language-server/package.json
index 943d5969..40734301 100644
--- a/packages/tailwindcss-language-server/package.json
+++ b/packages/tailwindcss-language-server/package.json
@@ -98,7 +98,7 @@
     "typescript": "5.8.3",
     "vite-tsconfig-paths": "^4.3.1",
     "vitest": "^3.0.9",
-    "vscode-css-languageservice": "6.3.3",
+    "vscode-css-languageservice": "6.3.6",
     "vscode-jsonrpc": "8.2.0",
     "vscode-languageclient": "8.1.0",
     "vscode-languageserver": "8.1.0",
diff --git a/packages/vscode-tailwindcss/CHANGELOG.md b/packages/vscode-tailwindcss/CHANGELOG.md
index 06971e23..e3bfc615 100644
--- a/packages/vscode-tailwindcss/CHANGELOG.md
+++ b/packages/vscode-tailwindcss/CHANGELOG.md
@@ -2,7 +2,7 @@
 
 ## Prerelease
 
-- Nothing yet!
+- Bump bundled CSS language service ([#1395](https://github.com/tailwindlabs/tailwindcss-intellisense/pull/1395))
 
 ## 0.14.20
 
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index bba85f89..bfeb4a1f 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -225,8 +225,8 @@ importers:
         specifier: ^3.0.9
         version: 3.0.9(@types/node@18.19.43)
       vscode-css-languageservice:
-        specifier: 6.3.3
-        version: 6.3.3
+        specifier: 6.3.6
+        version: 6.3.6
       vscode-jsonrpc:
         specifier: 8.2.0
         version: 8.2.0
@@ -2865,8 +2865,8 @@ packages:
       jsdom:
         optional: true
 
-  vscode-css-languageservice@6.3.3:
-    resolution: {integrity: sha512-xXa+ftMPv6JxRgzkvPwZuDCafIdwDW3kyijGcfij1a2qBVScr2qli6MfgJzYm/AMYdbHq9I/4hdpKV0Thim2EA==}
+  vscode-css-languageservice@6.3.6:
+    resolution: {integrity: sha512-fU4h8mT3KlvfRcbF74v/M+Gzbligav6QMx4AD/7CbclWPYOpGb9kgIswfpZVJbIcOEJJACI9iYizkNwdiAqlHw==}
 
   vscode-emmet-helper-bundled@0.0.1:
     resolution: {integrity: sha512-EhZ0Wt8MbdrKF3NUMfaUDhFPTdRnl1tyqYS7KOcNtsSNTV285IV+XPDtNQyw5rwYsULEfb6n+fK1DRufJQlPYw==}
@@ -2925,8 +2925,8 @@ packages:
   vscode-uri@3.0.2:
     resolution: {integrity: sha512-jkjy6pjU1fxUvI51P+gCsxg1u2n8LSt0W6KrCNQceaziKzff74GoWmjVG46KieVzybO1sttPQmYfrwSHey7GUA==}
 
-  vscode-uri@3.0.8:
-    resolution: {integrity: sha512-AyFQ0EVmsOZOlAnxoFOGOq1SQDWAB7C6aqMGS23svWAllfOaxbuFvcT8D1i8z3Gyn8fraVeZNNmN6e9bxxXkKw==}
+  vscode-uri@3.1.0:
+    resolution: {integrity: sha512-/BpdSx+yCQGnCvecbyXdxHDkuk55/G3xwnC0GqY4gmQ3j+A+g8kzzgB4Nk/SINjqn6+waqw3EgbVF2QKExkRxQ==}
 
   which@2.0.2:
     resolution: {integrity: sha512-BLI3Tl1TW3Pvl70l3yq3Y64i+awpwXqsGBYWkkqMtnbXgrMD+yj7rhW0kuEDxzJaYXGjEW5ogapKNMEKNMjibA==}
@@ -5273,12 +5273,12 @@ snapshots:
       - supports-color
       - terser
 
-  vscode-css-languageservice@6.3.3:
+  vscode-css-languageservice@6.3.6:
     dependencies:
       '@vscode/l10n': 0.0.18
       vscode-languageserver-textdocument: 1.0.12
       vscode-languageserver-types: 3.17.5
-      vscode-uri: 3.0.8
+      vscode-uri: 3.1.0
 
   vscode-emmet-helper-bundled@0.0.1: {}
 
@@ -5333,7 +5333,7 @@ snapshots:
 
   vscode-uri@3.0.2: {}
 
-  vscode-uri@3.0.8: {}
+  vscode-uri@3.1.0: {}
 
   which@2.0.2:
     dependencies: