diff --git a/composer.json b/composer.json
index ff64cc17f..af12218e1 100644
--- a/composer.json
+++ b/composer.json
@@ -19,6 +19,7 @@
     ],
     "require": {
         "php": "^7.1 || ^8.0",
+        "doctrine/deprecations": "^0.5.3 || ^1",
         "doctrine/persistence": "^2.0 || ^3.0"
     },
     "require-dev": {
diff --git a/phpstan.neon.dist b/phpstan.neon.dist
index 748a07b21..beddadc4f 100644
--- a/phpstan.neon.dist
+++ b/phpstan.neon.dist
@@ -25,23 +25,15 @@ parameters:
         -
             message: '#^Result of method Doctrine\\Tests\\Common\\Proxy\\LazyLoadableObjectWithVoid::(adding|incrementing)AndReturningVoid\(\) \(void\) is used\.$#'
             path: 'tests/Common/Proxy/ProxyLogicVoidReturnTypeTest.php'
-        -
-            message: '#^Property Doctrine\\Tests\\Common\\Proxy\\ProxyLogicTest::\$initializerCallbackMock \(callable\(\): mixed&PHPUnit\\Framework\\MockObject\\MockObject\) does not accept PHPUnit\\Framework\\MockObject\\MockObject&stdClass\.$#'
-            path: 'tests/Common/Proxy/ProxyLogicTest.php'
         -
             message: '#.*LazyLoadableObject.*#'
-            paths:
-               - 'tests/Common/Proxy/ProxyLogicTest.php'
-               - 'tests/Common/Proxy/ProxyLogicVoidReturnTypeTest.php'
+            path: 'tests/Common/Proxy/ProxyLogicTest.php'
         -
             message: '#^Instantiated class Doctrine\\Tests\\Common\\ProxyProxy\\__CG__\\Doctrine\\Tests\\Common\\Proxy\\.* not found.$#'
             path: 'tests/Common/Proxy/ProxyLogicTest.php'
         -
             message: '#^Instantiated class Doctrine\\Tests\\Common\\ProxyProxy\\__CG__\\Doctrine\\Tests\\Common\\Proxy\\.* not found.$#'
             path: 'tests/Common/Proxy/ProxyLogicVoidReturnTypeTest.php'
-        -
-            message: '#^Property Doctrine\\Tests\\Common\\Proxy\\ProxyLogicVoidReturnTypeTest::\$initializerCallbackMock \(callable\(\): mixed&PHPUnit\\Framework\\MockObject\\MockObject\) does not accept PHPUnit\\Framework\\MockObject\\MockObject&stdClass\.$#'
-            path: 'tests/Common/Proxy/ProxyLogicVoidReturnTypeTest.php'
         -
             message: '#^Method Doctrine\\Tests\\Common\\Proxy\\MagicIssetClassWithInteger::__isset\(\) should return bool but returns int\.$#'
             path: 'tests/Common/Proxy/MagicIssetClassWithInteger.php'
diff --git a/src/Proxy/AbstractProxyFactory.php b/src/Proxy/AbstractProxyFactory.php
index d487e1a21..a98a57159 100644
--- a/src/Proxy/AbstractProxyFactory.php
+++ b/src/Proxy/AbstractProxyFactory.php
@@ -15,6 +15,8 @@
 
 /**
  * Abstract factory for proxy objects.
+ *
+ * @deprecated The AbstractProxyFactory class is deprecated and will be removed in doctrine/common 4.0.
  */
 abstract class AbstractProxyFactory
 {
diff --git a/src/Proxy/Autoloader.php b/src/Proxy/Autoloader.php
index ec2379ce4..370c3f09d 100644
--- a/src/Proxy/Autoloader.php
+++ b/src/Proxy/Autoloader.php
@@ -20,7 +20,7 @@
 /**
  * Special Autoloader for Proxy classes, which are not PSR-0 compliant.
  *
- * @internal
+ * @deprecated The Autoloader class is deprecated and will be removed in doctrine/common 4.0.
  */
 class Autoloader
 {
diff --git a/src/Proxy/Exception/InvalidArgumentException.php b/src/Proxy/Exception/InvalidArgumentException.php
index 998600e20..1f91a9384 100644
--- a/src/Proxy/Exception/InvalidArgumentException.php
+++ b/src/Proxy/Exception/InvalidArgumentException.php
@@ -13,7 +13,7 @@
 /**
  * Proxy Invalid Argument Exception.
  *
- * @link   www.doctrine-project.org
+ * @deprecated The InvalidArgumentException class is deprecated and will be removed in doctrine/common 4.0.
  */
 class InvalidArgumentException extends BaseInvalidArgumentException implements ProxyException
 {
diff --git a/src/Proxy/Exception/OutOfBoundsException.php b/src/Proxy/Exception/OutOfBoundsException.php
index 0da3e9139..065c4f647 100644
--- a/src/Proxy/Exception/OutOfBoundsException.php
+++ b/src/Proxy/Exception/OutOfBoundsException.php
@@ -9,7 +9,7 @@
 /**
  * Proxy Invalid Argument Exception.
  *
- * @link   www.doctrine-project.org
+ * @deprecated The OutOfBoundsException class is deprecated and will be removed in doctrine/common 4.0.
  */
 class OutOfBoundsException extends BaseOutOfBoundsException implements ProxyException
 {
diff --git a/src/Proxy/Exception/ProxyException.php b/src/Proxy/Exception/ProxyException.php
index f827fbd03..9d1e7437e 100644
--- a/src/Proxy/Exception/ProxyException.php
+++ b/src/Proxy/Exception/ProxyException.php
@@ -5,7 +5,7 @@
 /**
  * Base exception interface for proxy exceptions.
  *
- * @link   www.doctrine-project.org
+ * @deprecated The ProxyException interface is deprecated and will be removed in doctrine/common 4.0.
  */
 interface ProxyException
 {
diff --git a/src/Proxy/Exception/UnexpectedValueException.php b/src/Proxy/Exception/UnexpectedValueException.php
index 49829f719..7c45bfb72 100644
--- a/src/Proxy/Exception/UnexpectedValueException.php
+++ b/src/Proxy/Exception/UnexpectedValueException.php
@@ -10,7 +10,7 @@
 /**
  * Proxy Unexpected Value Exception.
  *
- * @link   www.doctrine-project.org
+ * @deprecated The UnexpectedValueException class is deprecated and will be removed in doctrine/common 4.0.
  */
 class UnexpectedValueException extends BaseUnexpectedValueException implements ProxyException
 {
diff --git a/src/Proxy/Proxy.php b/src/Proxy/Proxy.php
index f723ac805..d804d3fa4 100644
--- a/src/Proxy/Proxy.php
+++ b/src/Proxy/Proxy.php
@@ -8,6 +8,8 @@
 /**
  * Interface for proxy classes.
  *
+ * @deprecated The Proxy interface is deprecated and will be removed in doctrine/common 4.0.
+ *
  * @template T of object
  * @template-extends BaseProxy<T>
  */
diff --git a/src/Proxy/ProxyDefinition.php b/src/Proxy/ProxyDefinition.php
index a7f395738..f39604a3e 100644
--- a/src/Proxy/ProxyDefinition.php
+++ b/src/Proxy/ProxyDefinition.php
@@ -6,6 +6,8 @@
 
 /**
  * Definition structure how to create a proxy.
+ *
+ * @deprecated The ProxyDefinition class is deprecated and will be removed in doctrine/common 4.0.
  */
 class ProxyDefinition
 {
diff --git a/src/Proxy/ProxyGenerator.php b/src/Proxy/ProxyGenerator.php
index 5d5b67e38..e4d1fcb07 100644
--- a/src/Proxy/ProxyGenerator.php
+++ b/src/Proxy/ProxyGenerator.php
@@ -6,6 +6,7 @@
 use Doctrine\Common\Proxy\Exception\InvalidArgumentException;
 use Doctrine\Common\Proxy\Exception\UnexpectedValueException;
 use Doctrine\Common\Util\ClassUtils;
+use Doctrine\Deprecations\Deprecation;
 use Doctrine\Persistence\Mapping\ClassMetadata;
 use ReflectionIntersectionType;
 use ReflectionMethod;
@@ -67,6 +68,8 @@
 /**
  * This factory is used to generate proxy classes.
  * It builds proxies from given parameters, a template and class metadata.
+ *
+ * @deprecated The ProxyGenerator class is deprecated and will be removed in doctrine/common 4.0.
  */
 class ProxyGenerator
 {
@@ -259,6 +262,14 @@ public function __getLazyProperties(): array
      */
     public function __construct($proxyDirectory, $proxyNamespace)
     {
+        if (PHP_VERSION_ID >= 80100) {
+            Deprecation::trigger(
+                'doctrine/common',
+                'https://github.com/doctrine/common/pull/1002',
+                'The ProxyGenerator class is deprecated and will be removed in doctrine/common 4.0 together with all other symbols in the Doctrine\Common\Proxy namespace.'
+            );
+        }
+
         if (! $proxyDirectory) {
             throw InvalidArgumentException::proxyDirectoryRequired();
         }