diff --git a/.prettierignore b/.prettierignore
index 07f2d18df45..a3406c27066 100644
--- a/.prettierignore
+++ b/.prettierignore
@@ -38,6 +38,10 @@ adev/src/content/aria/**/*.json
 adev/src/content/cli/**/*.json
 adev/src/content/cdk/**/*.json
 
+# Example package.json containing docregion (`// #docregion`) markers, which are
+# not valid JSON and cannot be processed by Prettier's json-stringify parser.
+adev/src/content/examples/schematics-for-libraries/projects/my-lib/package.json
+
 # Antigravity rules
 .agent/rules/agents.md
 
diff --git a/adev/src/content/examples/schematics-for-libraries/projects/my-lib/package.json b/adev/src/content/examples/schematics-for-libraries/projects/my-lib/package.json
index 4bdab6c3488..1d4d218716d 100644
--- a/adev/src/content/examples/schematics-for-libraries/projects/my-lib/package.json
+++ b/adev/src/content/examples/schematics-for-libraries/projects/my-lib/package.json
@@ -9,8 +9,8 @@
     "postbuild": "copyfiles schematics/*/schema.json schematics/*/files/** schematics/collection.json ../../dist/my-lib/"
   },
   "peerDependencies": {
-    "@angular/common": "^21.0.0",
-    "@angular/core": "^21.0.0"
+    "@angular/common": "^22.0.0",
+    "@angular/core": "^22.0.0"
   },
 // #docregion collection
   "schematics": "./schematics/collection.json",