diff --git a/apps/demos/package.json b/apps/demos/package.json
index 47579b7e76db..72e49c4337bf 100644
--- a/apps/demos/package.json
+++ b/apps/demos/package.json
@@ -92,7 +92,7 @@
         "express-rate-limit": "^8.3.1"
     },
     "devDependencies": {
-        "@angular/platform-server": "21.2.9",
+        "@angular/platform-server": "21.2.13",
         "@babel/core": "7.29.0",
         "@babel/eslint-parser": "catalog:",
         "@babel/preset-env": "7.29.2",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index c578ed08dca9..3ca4f02d4f9f 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -40,8 +40,8 @@ catalogs:
       specifier: ~20.3.21
       version: 20.3.21
     '@angular/platform-server':
-      specifier: ~20.3.21
-      version: 20.3.21
+      specifier: ~21.2.13
+      version: 21.2.14
     '@angular/router':
       specifier: ~20.3.21
       version: 20.3.21
@@ -1907,7 +1907,7 @@ importers:
         version: 20.3.21(@angular/common@20.3.21(@angular/core@20.3.21(@angular/compiler@20.3.21)(rxjs@7.8.2)(zone.js@0.15.1))(rxjs@7.8.2))(@angular/compiler@20.3.21)(@angular/core@20.3.21(@angular/compiler@20.3.21)(rxjs@7.8.2)(zone.js@0.15.1))(@angular/platform-browser@20.3.21(@angular/common@20.3.21(@angular/core@20.3.21(@angular/compiler@20.3.21)(rxjs@7.8.2)(zone.js@0.15.1))(rxjs@7.8.2))(@angular/core@20.3.21(@angular/compiler@20.3.21)(rxjs@7.8.2)(zone.js@0.15.1)))
       '@angular/platform-server':
         specifier: catalog:angular
-        version: 20.3.21(@angular/common@20.3.21(@angular/core@20.3.21(@angular/compiler@20.3.21)(rxjs@7.8.2)(zone.js@0.15.1))(rxjs@7.8.2))(@angular/compiler@20.3.21)(@angular/core@20.3.21(@angular/compiler@20.3.21)(rxjs@7.8.2)(zone.js@0.15.1))(@angular/platform-browser@20.3.21(@angular/common@20.3.21(@angular/core@20.3.21(@angular/compiler@20.3.21)(rxjs@7.8.2)(zone.js@0.15.1))(rxjs@7.8.2))(@angular/core@20.3.21(@angular/compiler@20.3.21)(rxjs@7.8.2)(zone.js@0.15.1)))(rxjs@7.8.2)
+        version: 21.2.14(@angular/common@20.3.21(@angular/core@20.3.21(@angular/compiler@20.3.21)(rxjs@7.8.2)(zone.js@0.15.1))(rxjs@7.8.2))(@angular/compiler@20.3.21)(@angular/core@20.3.21(@angular/compiler@20.3.21)(rxjs@7.8.2)(zone.js@0.15.1))(@angular/platform-browser@20.3.21(@angular/common@20.3.21(@angular/core@20.3.21(@angular/compiler@20.3.21)(rxjs@7.8.2)(zone.js@0.15.1))(rxjs@7.8.2))(@angular/core@20.3.21(@angular/compiler@20.3.21)(rxjs@7.8.2)(zone.js@0.15.1)))(rxjs@7.8.2)
       '@babel/eslint-parser':
         specifier: 'catalog:'
         version: 7.28.6(@babel/core@7.29.0)(eslint@9.39.4(jiti@2.6.1))
@@ -19036,6 +19036,17 @@ snapshots:
       rxjs: 7.8.2
       tslib: 2.8.1
       xhr2: 0.2.1
+    optional: true
+
+  '@angular/platform-server@21.2.14(@angular/common@20.3.21(@angular/core@20.3.21(@angular/compiler@20.3.21)(rxjs@7.8.2)(zone.js@0.15.1))(rxjs@7.8.2))(@angular/compiler@20.3.21)(@angular/core@20.3.21(@angular/compiler@20.3.21)(rxjs@7.8.2)(zone.js@0.15.1))(@angular/platform-browser@20.3.21(@angular/common@20.3.21(@angular/core@20.3.21(@angular/compiler@20.3.21)(rxjs@7.8.2)(zone.js@0.15.1))(rxjs@7.8.2))(@angular/core@20.3.21(@angular/compiler@20.3.21)(rxjs@7.8.2)(zone.js@0.15.1)))(rxjs@7.8.2)':
+    dependencies:
+      '@angular/common': 20.3.21(@angular/core@20.3.21(@angular/compiler@20.3.21)(rxjs@7.8.2)(zone.js@0.15.1))(rxjs@7.8.2)
+      '@angular/compiler': 20.3.21
+      '@angular/core': 20.3.21(@angular/compiler@20.3.21)(rxjs@7.8.2)(zone.js@0.15.1)
+      '@angular/platform-browser': 20.3.21(@angular/common@20.3.21(@angular/core@20.3.21(@angular/compiler@20.3.21)(rxjs@7.8.2)(zone.js@0.15.1))(rxjs@7.8.2))(@angular/core@20.3.21(@angular/compiler@20.3.21)(rxjs@7.8.2)(zone.js@0.15.1))
+      rxjs: 7.8.2
+      tslib: 2.8.1
+      xhr2: 0.2.1
 
   '@angular/platform-server@21.2.14(@angular/common@21.1.6(@angular/core@21.2.9(@angular/compiler@21.2.9)(rxjs@7.8.2)(zone.js@0.15.1))(rxjs@7.8.2))(@angular/compiler@21.2.9)(@angular/core@21.2.9(@angular/compiler@21.2.9)(rxjs@7.8.2)(zone.js@0.15.1))(@angular/platform-browser@21.1.6(@angular/animations@21.1.6(@angular/core@21.2.9(@angular/compiler@21.2.9)(rxjs@7.8.2)(zone.js@0.15.1)))(@angular/common@21.1.6(@angular/core@21.2.9(@angular/compiler@21.2.9)(rxjs@7.8.2)(zone.js@0.15.1))(rxjs@7.8.2))(@angular/core@21.2.9(@angular/compiler@21.2.9)(rxjs@7.8.2)(zone.js@0.15.1)))(rxjs@7.8.2)':
     dependencies:
diff --git a/pnpm-workspace.yaml b/pnpm-workspace.yaml
index e705ec751209..287aedc33075 100644
--- a/pnpm-workspace.yaml
+++ b/pnpm-workspace.yaml
@@ -50,7 +50,7 @@ catalogs:
     "@angular/forms": ~20.3.21
     "@angular/platform-browser": ~20.3.21
     "@angular/platform-browser-dynamic": ~20.3.21
-    "@angular/platform-server": ~20.3.21
+    "@angular/platform-server": ~21.2.13
     "@angular/router": ~20.3.21
     "ng-packagr": ~20.3.0
     "typescript": ~5.8.0