diff --git a/UPGRADE-7.3.md b/UPGRADE-7.3.md
index 18d84c9fd759d..77a3f14c3445b 100644
--- a/UPGRADE-7.3.md
+++ b/UPGRADE-7.3.md
@@ -79,29 +79,31 @@ FrameworkBundle
  * The XML routing configuration files (`errors.xml` and `webhook.xml`) are
    deprecated, use their PHP equivalent ones:
 
-  *Before*
-  ```yaml
-    when@dev:
-        _errors:
-            resource: '@FrameworkBundle/Resources/config/routing/errors.xml'
-            prefix: /_error
+   Before:
 
-    webhook:
-        resource: '@FrameworkBundle/Resources/config/routing/webhook.xml'
-        prefix: /webhook
-    ```
+   ```yaml
+   when@dev:
+       _errors:
+           resource: '@FrameworkBundle/Resources/config/routing/errors.xml'
+           prefix: /_error
 
-  *After*
-  ```yaml
-    when@dev:
-        _errors:
-            resource: '@FrameworkBundle/Resources/config/routing/errors.php'
-            prefix: /_error
+   webhook:
+       resource: '@FrameworkBundle/Resources/config/routing/webhook.xml'
+       prefix: /webhook
+   ```
 
-    webhook:
-        resource: '@FrameworkBundle/Resources/config/routing/webhook.php'
-        prefix: /webhook
-    ```
+   After:
+
+   ```yaml
+   when@dev:
+       _errors:
+           resource: '@FrameworkBundle/Resources/config/routing/errors.php'
+           prefix: /_error
+
+   webhook:
+       resource: '@FrameworkBundle/Resources/config/routing/webhook.php'
+       prefix: /webhook
+   ```
 
 HttpFoundation
 --------------
@@ -139,36 +141,6 @@ PropertyInfo
  * Deprecate the `PropertyTypeExtractorInterface::getTypes()` method, use `PropertyTypeExtractorInterface::getType()` instead
  * Deprecate the `ConstructorArgumentTypeExtractorInterface::getTypesFromConstructor()` method, use `ConstructorArgumentTypeExtractorInterface::getTypeFromConstructor()` instead
 
-Routing
--------
-
- * The XML routing configuration files (`profiler.xml` and `wdt.xml`) are
-   deprecated, use their PHP equivalent ones:
-
-  *Before*
-  ```yaml
-    when@dev:
-        web_profiler_wdt:
-            resource: '@WebProfilerBundle/Resources/config/routing/wdt.xml'
-            prefix: /_wdt
-
-        web_profiler_profiler:
-            resource: '@WebProfilerBundle/Resources/config/routing/profiler.xml'
-            prefix: /_profiler
-    ```
-
-  *After*
-  ```yaml
-    when@dev:
-        web_profiler_wdt:
-            resource: '@WebProfilerBundle/Resources/config/routing/wdt.php'
-            prefix: /_wdt
-
-        web_profiler_profiler:
-            resource: '@WebProfilerBundle/Resources/config/routing/profiler.php
-            prefix: /_profiler
-    ```
-
 Security
 --------
 
@@ -307,6 +279,38 @@ VarExporter
  * Deprecate `LazyGhostTrait` and `LazyProxyTrait`, use native lazy objects instead
  * Deprecate `ProxyHelper::generateLazyGhost()`, use native lazy objects instead
 
+WebProfilerBundle
+-----------------
+
+ * The XML routing configuration files (`profiler.xml` and `wdt.xml`) are
+   deprecated, use their PHP equivalent ones:
+
+   Before:
+
+   ```yaml
+   when@dev:
+       web_profiler_wdt:
+           resource: '@WebProfilerBundle/Resources/config/routing/wdt.xml'
+           prefix: /_wdt
+
+       web_profiler_profiler:
+           resource: '@WebProfilerBundle/Resources/config/routing/profiler.xml'
+           prefix: /_profiler
+   ```
+
+   After:
+
+   ```yaml
+   when@dev:
+       web_profiler_wdt:
+           resource: '@WebProfilerBundle/Resources/config/routing/wdt.php'
+           prefix: /_wdt
+
+       web_profiler_profiler:
+           resource: '@WebProfilerBundle/Resources/config/routing/profiler.php
+           prefix: /_profiler
+   ```
+
 Workflow
 --------
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/CHANGELOG.md b/src/Symfony/Bundle/FrameworkBundle/CHANGELOG.md
index 40289cf57ddde..935479f485358 100644
--- a/src/Symfony/Bundle/FrameworkBundle/CHANGELOG.md
+++ b/src/Symfony/Bundle/FrameworkBundle/CHANGELOG.md
@@ -5,6 +5,33 @@ CHANGELOG
 ---
 
  * Add `errors.php` and `webhook.php` routing configuration files (use them instead of their XML equivalent)
+
+   Before:
+
+   ```yaml
+   when@dev:
+       _errors:
+           resource: '@FrameworkBundle/Resources/config/routing/errors.xml'
+           prefix: /_error
+
+   webhook:
+       resource: '@FrameworkBundle/Resources/config/routing/webhook.xml'
+       prefix: /webhook
+   ```
+
+   After:
+
+   ```yaml
+   when@dev:
+       _errors:
+           resource: '@FrameworkBundle/Resources/config/routing/errors.php'
+           prefix: /_error
+
+   webhook:
+       resource: '@FrameworkBundle/Resources/config/routing/webhook.php'
+       prefix: /webhook
+   ```
+
  * Add support for the ObjectMapper component
  * Add support for assets pre-compression
  * Rename `TranslationUpdateCommand` to `TranslationExtractCommand`
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/config/routing/errors.php b/src/Symfony/Bundle/FrameworkBundle/Resources/config/routing/errors.php
index 11040e29a7e6d..36a46dee407ea 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/config/routing/errors.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/config/routing/errors.php
@@ -10,8 +10,19 @@
  */
 
 use Symfony\Component\Routing\Loader\Configurator\RoutingConfigurator;
+use Symfony\Component\Routing\Loader\XmlFileLoader;
 
 return function (RoutingConfigurator $routes): void {
+    foreach (debug_backtrace() as $trace) {
+        if (isset($trace['object']) && $trace['object'] instanceof XmlFileLoader && 'doImport' === $trace['function']) {
+            if (__DIR__ === dirname(realpath($trace['args'][3]))) {
+                trigger_deprecation('symfony/routing', '7.3', 'The "errors.xml" routing configuration file is deprecated, import "errors.php" instead.');
+
+                break;
+            }
+        }
+    }
+
     $routes->add('_preview_error', '/{code}.{_format}')
         ->controller('error_controller::preview')
         ->defaults(['_format' => 'html'])
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/config/routing/webhook.php b/src/Symfony/Bundle/FrameworkBundle/Resources/config/routing/webhook.php
index 413fe6c817119..ea80311599fa0 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/config/routing/webhook.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/config/routing/webhook.php
@@ -10,8 +10,19 @@
  */
 
 use Symfony\Component\Routing\Loader\Configurator\RoutingConfigurator;
+use Symfony\Component\Routing\Loader\XmlFileLoader;
 
 return function (RoutingConfigurator $routes): void {
+    foreach (debug_backtrace() as $trace) {
+        if (isset($trace['object']) && $trace['object'] instanceof XmlFileLoader && 'doImport' === $trace['function']) {
+            if (__DIR__ === dirname(realpath($trace['args'][3]))) {
+                trigger_deprecation('symfony/routing', '7.3', 'The "webhook.xml" routing configuration file is deprecated, import "webhook.php" instead.');
+
+                break;
+            }
+        }
+    }
+
     $routes->add('_webhook_controller', '/{type}')
         ->controller('webhook_controller::handle')
         ->requirements(['type' => '.+'])
diff --git a/src/Symfony/Bundle/WebProfilerBundle/CHANGELOG.md b/src/Symfony/Bundle/WebProfilerBundle/CHANGELOG.md
index 6243330cff55d..5e5e8db36e233 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/CHANGELOG.md
+++ b/src/Symfony/Bundle/WebProfilerBundle/CHANGELOG.md
@@ -5,6 +5,33 @@ CHANGELOG
 ---
 
  * Add `profiler.php` and `wdt.php` routing configuration files (use them instead of their XML equivalent)
+
+   Before:
+
+   ```yaml
+   when@dev:
+       web_profiler_wdt:
+           resource: '@WebProfilerBundle/Resources/config/routing/wdt.xml'
+           prefix: /_wdt
+
+      web_profiler_profiler:
+          resource: '@WebProfilerBundle/Resources/config/routing/profiler.xml'
+          prefix: /_profiler
+   ```
+
+   After:
+
+   ```yaml
+   when@dev:
+       web_profiler_wdt:
+           resource: '@WebProfilerBundle/Resources/config/routing/wdt.php'
+           prefix: /_wdt
+
+       web_profiler_profiler:
+           resource: '@WebProfilerBundle/Resources/config/routing/profiler.php
+           prefix: /_profiler
+   ```
+
  * Add `ajax_replace` option for replacing toolbar on AJAX requests
 
 7.2