diff --git a/.aspect/rules/external_repository_action_cache/npm_translate_lock_LTE4Nzc1MDcwNjU= b/.aspect/rules/external_repository_action_cache/npm_translate_lock_LTE4Nzc1MDcwNjU=
index 32eab82cd8..0235e66436 100755
--- a/.aspect/rules/external_repository_action_cache/npm_translate_lock_LTE4Nzc1MDcwNjU=
+++ b/.aspect/rules/external_repository_action_cache/npm_translate_lock_LTE4Nzc1MDcwNjU=
@@ -2,7 +2,7 @@
 # Input hashes for repository rule npm_translate_lock(name = "npm", pnpm_lock = "//:pnpm-lock.yaml").
 # This file should be checked into version control along with the pnpm-lock.yaml file.
 .npmrc=974837034
-pnpm-lock.yaml=203932675
-yarn.lock=1571734169
-package.json=-523279169
+pnpm-lock.yaml=484590728
+yarn.lock=-724205769
+package.json=1549657417
 pnpm-workspace.yaml=1711114604
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a31a8b565c..62966ce70b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# 20.3.0
+
+This release upgrades `@angular/language-service` to v20.3.5.
+
 # 20.2.2
 
 This release upgrades `@angular/language-service` to v20.2.0-rc.1.
diff --git a/package.json b/package.json
index 2e03864435..ed272cb835 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "ng-template",
   "displayName": "Angular Language Service",
   "description": "Editor services for Angular templates",
-  "version": "20.2.2",
+  "version": "20.3.0",
   "publisher": "Angular",
   "icon": "angular.png",
   "license": "MIT",
@@ -269,7 +269,7 @@
     "test:legacy-syntaxes": "yarn compile:syntaxes-test && yarn build:syntaxes && jasmine dist/syntaxes/test/driver.js"
   },
   "dependencies": {
-    "@angular/language-service": "20.2.0-rc.1",
+    "@angular/language-service": "20.3.5",
     "typescript": "^5.9.2",
     "vscode-html-languageservice": "^4.2.5",
     "vscode-jsonrpc": "6.0.0",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index bf91c1556d..e80ad71ffa 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -9,8 +9,8 @@ importers:
   .:
     dependencies:
       '@angular/language-service':
-        specifier: 20.2.0-rc.1
-        version: registry.npmjs.org/@angular/language-service@20.2.0-rc.1
+        specifier: 20.3.5
+        version: registry.npmjs.org/@angular/language-service@20.3.5
       typescript:
         specifier: ^5.9.2
         version: registry.npmjs.org/typescript@5.9.2
@@ -438,10 +438,10 @@ packages:
       tslib: registry.npmjs.org/tslib@2.6.3
     dev: true
 
-  registry.npmjs.org/@angular/language-service@20.2.0-rc.1:
-    resolution: {integrity: sha512-0f6/gn1l6pLJH9DNMAK3wT1JhpKR7NQNmItNO/vM2P2S/8gzQUP62hvP5hCraR2lMwoXuSLD/EiJ4Nw/xw0nSQ==, registry: https://registry.yarnpkg.com/, tarball: https://registry.npmjs.org/@angular/language-service/-/language-service-20.2.0-rc.1.tgz}
+  registry.npmjs.org/@angular/language-service@20.3.5:
+    resolution: {integrity: sha512-wLNi8Tad7SBY+QizywPWmFoTrl5AsE36t5DDeZbJ+FVannmCycrp68/RikHaywldacADtiI0+blCNu983nDMSg==, registry: https://registry.yarnpkg.com/, tarball: https://registry.npmjs.org/@angular/language-service/-/language-service-20.3.5.tgz}
     name: '@angular/language-service'
-    version: 20.2.0-rc.1
+    version: 20.3.5
     engines: {node: ^20.19.0 || ^22.12.0 || >=24.0.0}
     dev: false
 
@@ -7400,7 +7400,7 @@ packages:
       socket.io: registry.npmjs.org/socket.io@4.7.5
       source-map: registry.npmjs.org/source-map@0.6.1
       tmp: registry.npmjs.org/tmp@0.2.3
-      ua-parser-js: registry.npmjs.org/ua-parser-js@0.7.40
+      ua-parser-js: registry.npmjs.org/ua-parser-js@0.7.41
       yargs: registry.npmjs.org/yargs@16.2.0
     transitivePeerDependencies:
       - bufferutil
@@ -10840,10 +10840,10 @@ packages:
     engines: {node: '>=14.17'}
     hasBin: true
 
-  registry.npmjs.org/ua-parser-js@0.7.40:
-    resolution: {integrity: sha512-us1E3K+3jJppDBa3Tl0L3MOJiGhe1C6P0+nIvQAFYbxlMAx0h81eOwLmU57xgqToduDDPx3y5QsdjPfDu+FgOQ==, registry: https://registry.yarnpkg.com/, tarball: https://registry.npmjs.org/ua-parser-js/-/ua-parser-js-0.7.40.tgz}
+  registry.npmjs.org/ua-parser-js@0.7.41:
+    resolution: {integrity: sha512-O3oYyCMPYgNNHuO7Jjk3uacJWZF8loBgwrfd/5LE/HyZ3lUIOdniQ7DNXJcIgZbwioZxk0fLfI4EVnetdiX5jg==, registry: https://registry.yarnpkg.com/, tarball: https://registry.npmjs.org/ua-parser-js/-/ua-parser-js-0.7.41.tgz}
     name: ua-parser-js
-    version: 0.7.40
+    version: 0.7.41
     hasBin: true
     dev: true
 
diff --git a/server/package.json b/server/package.json
index 4e49227126..e49e0ac52c 100644
--- a/server/package.json
+++ b/server/package.json
@@ -15,7 +15,7 @@
     "ngserver": "./bin/ngserver"
   },
   "dependencies": {
-    "@angular/language-service": "20.2.0-rc.1",
+    "@angular/language-service": "20.3.5",
     "vscode-html-languageservice": "^4.2.5",
     "vscode-jsonrpc": "6.0.0",
     "vscode-languageserver": "7.0.0",
diff --git a/yarn.lock b/yarn.lock
index dcaef02eed..7cbc24812a 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -173,10 +173,10 @@
     uuid "^8.3.2"
     yargs "^17.0.0"
 
-"@angular/language-service@20.2.0-rc.1":
-  version "20.2.0-rc.1"
-  resolved "https://registry.yarnpkg.com/@angular/language-service/-/language-service-20.2.0-rc.1.tgz#e38807ca2f629e38c4acf9d024d35a12a920f0a1"
-  integrity sha512-0f6/gn1l6pLJH9DNMAK3wT1JhpKR7NQNmItNO/vM2P2S/8gzQUP62hvP5hCraR2lMwoXuSLD/EiJ4Nw/xw0nSQ==
+"@angular/language-service@20.3.5":
+  version "20.3.5"
+  resolved "https://registry.yarnpkg.com/@angular/language-service/-/language-service-20.3.5.tgz#bb0e3927ca0e5751db4a5e4464c224963d834dbd"
+  integrity sha512-wLNi8Tad7SBY+QizywPWmFoTrl5AsE36t5DDeZbJ+FVannmCycrp68/RikHaywldacADtiI0+blCNu983nDMSg==
 
 "@assemblyscript/loader@^0.10.1":
   version "0.10.1"