diff --git a/src/Symfony/Component/ErrorHandler/DebugClassLoader.php b/src/Symfony/Component/ErrorHandler/DebugClassLoader.php
index fe6227e814..04836ef31b 100644
--- a/src/Symfony/Component/ErrorHandler/DebugClassLoader.php
+++ b/src/Symfony/Component/ErrorHandler/DebugClassLoader.php
@@ -49,12 +49,9 @@ use ProxyManager\Proxy\ProxyInterface;
 class DebugClassLoader
 {
     private const SPECIAL_RETURN_TYPES = [
-        'mixed' => 'mixed',
         'void' => 'void',
         'null' => 'null',
         'resource' => 'resource',
-        'static' => 'object',
-        '$this' => 'object',
         'boolean' => 'bool',
         'true' => 'bool',
         'false' => 'bool',
@@ -69,7 +66,13 @@ class DebugClassLoader
         'string' => 'string',
         'self' => 'self',
         'parent' => 'parent',
-    ];
+    ] + (\PHP_VERSION_ID >= 80000 ? [
+        '$this' => 'static',
+    ] : [
+        'mixed' => 'mixed',
+        'static' => 'object',
+        '$this' => 'object',
+    ]);
 
     private const BUILTIN_RETURN_TYPES = [
         'void' => true,
@@ -83,7 +86,10 @@ class DebugClassLoader
         'string' => true,
         'self' => true,
         'parent' => true,
-    ];
+    ] + (\PHP_VERSION_ID >= 80000 ? [
+        'mixed' => true,
+        'static' => true,
+    ] : []);
 
     private const MAGIC_METHODS = [
         '__set' => 'void',
@@ -856,7 +862,7 @@ class DebugClassLoader
             }
         }
 
-        if ('void' === $normalizedType) {
+        if ('void' === $normalizedType || (\PHP_VERSION_ID >= 80000 && 'mixed' === $normalizedType)) {
             $nullable = false;
         } elseif (!isset(self::BUILTIN_RETURN_TYPES[$normalizedType]) && isset(self::SPECIAL_RETURN_TYPES[$normalizedType])) {
             // ignore other special return types
diff --git a/src/Symfony/Component/ErrorHandler/Tests/DebugClassLoaderTest.php b/src/Symfony/Component/ErrorHandler/Tests/DebugClassLoaderTest.php
index d0ff0afba8..c77d3711fc 100644
--- a/src/Symfony/Component/ErrorHandler/Tests/DebugClassLoaderTest.php
+++ b/src/Symfony/Component/ErrorHandler/Tests/DebugClassLoaderTest.php
@@ -370,7 +370,7 @@ class DebugClassLoaderTest extends TestCase
         error_reporting($e);
         restore_error_handler();
 
-        $this->assertSame([
+        $this->assertSame(array_merge([
            'Method "Symfony\Component\ErrorHandler\Tests\Fixtures\ReturnTypeGrandParent::returnTypeGrandParent()" will return "string" as of its next major version. Doing the same in child class "Test\Symfony\Component\ErrorHandler\Tests\ReturnType" will be required when upgrading.',
            'Method "Symfony\Component\ErrorHandler\Tests\Fixtures\ReturnTypeParentInterface::returnTypeParentInterface()" will return "string" as of its next major version. Doing the same in implementation "Test\Symfony\Component\ErrorHandler\Tests\ReturnType" will be required when upgrading.',
            'Method "Symfony\Component\ErrorHandler\Tests\Fixtures\ReturnTypeInterface::returnTypeInterface()" will return "string" as of its next major version. Doing the same in implementation "Test\Symfony\Component\ErrorHandler\Tests\ReturnType" will be required when upgrading.',
@@ -383,14 +383,21 @@ class DebugClassLoaderTest extends TestCase
            'Method "Symfony\Component\ErrorHandler\Tests\Fixtures\ReturnTypeParent::manyIterables()" will return "array" as of its next major version. Doing the same in child class "Test\Symfony\Component\ErrorHandler\Tests\ReturnType" will be required when upgrading.',
            'Method "Symfony\Component\ErrorHandler\Tests\Fixtures\ReturnTypeParent::nullableReturnableTypeNormalization()" will return "object" as of its next major version. Doing the same in child class "Test\Symfony\Component\ErrorHandler\Tests\ReturnType" will be required when upgrading.',
            'Method "Symfony\Component\ErrorHandler\Tests\Fixtures\ReturnTypeParent::nonNullableReturnableTypeNormalization()" will return "void" as of its next major version. Doing the same in child class "Test\Symfony\Component\ErrorHandler\Tests\ReturnType" will be required when upgrading.',
-           'Method "Symfony\Component\ErrorHandler\Tests\Fixtures\ReturnTypeParent::commonNonObjectReturnedTypeNormalization()" will return "object" as of its next major version. Doing the same in child class "Test\Symfony\Component\ErrorHandler\Tests\ReturnType" will be required when upgrading.',
            'Method "Symfony\Component\ErrorHandler\Tests\Fixtures\ReturnTypeParent::bracketsNormalization()" will return "array" as of its next major version. Doing the same in child class "Test\Symfony\Component\ErrorHandler\Tests\ReturnType" will be required when upgrading.',
            'Method "Symfony\Component\ErrorHandler\Tests\Fixtures\ReturnTypeParent::booleanNormalization()" will return "bool" as of its next major version. Doing the same in child class "Test\Symfony\Component\ErrorHandler\Tests\ReturnType" will be required when upgrading.',
            'Method "Symfony\Component\ErrorHandler\Tests\Fixtures\ReturnTypeParent::callableNormalization1()" will return "callable" as of its next major version. Doing the same in child class "Test\Symfony\Component\ErrorHandler\Tests\ReturnType" will be required when upgrading.',
            'Method "Symfony\Component\ErrorHandler\Tests\Fixtures\ReturnTypeParent::callableNormalization2()" will return "callable" as of its next major version. Doing the same in child class "Test\Symfony\Component\ErrorHandler\Tests\ReturnType" will be required when upgrading.',
            'Method "Symfony\Component\ErrorHandler\Tests\Fixtures\ReturnTypeParent::otherTypeNormalization()" will return "\ArrayIterator" as of its next major version. Doing the same in child class "Test\Symfony\Component\ErrorHandler\Tests\ReturnType" will be required when upgrading.',
            'Method "Symfony\Component\ErrorHandler\Tests\Fixtures\ReturnTypeParent::arrayWithLessThanSignNormalization()" will return "array" as of its next major version. Doing the same in child class "Test\Symfony\Component\ErrorHandler\Tests\ReturnType" will be required when upgrading.',
-        ], $deprecations);
+        ], \PHP_VERSION_ID >= 80000 ? [
+            'Method "Symfony\Component\ErrorHandler\Tests\Fixtures\ReturnTypeParent::this()" will return "static" as of its next major version. Doing the same in child class "Test\Symfony\Component\ErrorHandler\Tests\ReturnType" will be required when upgrading.',
+            'Method "Symfony\Component\ErrorHandler\Tests\Fixtures\ReturnTypeParent::mixed()" will return "mixed" as of its next major version. Doing the same in child class "Test\Symfony\Component\ErrorHandler\Tests\ReturnType" will be required when upgrading.',
+            'Method "Symfony\Component\ErrorHandler\Tests\Fixtures\ReturnTypeParent::nullableMixed()" will return "mixed" as of its next major version. Doing the same in child class "Test\Symfony\Component\ErrorHandler\Tests\ReturnType" will be required when upgrading.',
+            'Method "Symfony\Component\ErrorHandler\Tests\Fixtures\ReturnTypeParent::static()" will return "static" as of its next major version. Doing the same in child class "Test\Symfony\Component\ErrorHandler\Tests\ReturnType" will be required when upgrading.',
+        ] : [
+            'Method "Symfony\Component\ErrorHandler\Tests\Fixtures\ReturnTypeParent::this()" will return "object" as of its next major version. Doing the same in child class "Test\Symfony\Component\ErrorHandler\Tests\ReturnType" will be required when upgrading.',
+            'Method "Symfony\Component\ErrorHandler\Tests\Fixtures\ReturnTypeParent::static()" will return "object" as of its next major version. Doing the same in child class "Test\Symfony\Component\ErrorHandler\Tests\ReturnType" will be required when upgrading.',
+        ]), $deprecations);
     }
 }
 
diff --git a/src/Symfony/Component/ErrorHandler/Tests/Fixtures/ReturnType.php b/src/Symfony/Component/ErrorHandler/Tests/Fixtures/ReturnType.php
index 28682763b7..228bf7f4c6 100644
--- a/src/Symfony/Component/ErrorHandler/Tests/Fixtures/ReturnType.php
+++ b/src/Symfony/Component/ErrorHandler/Tests/Fixtures/ReturnType.php
@@ -35,12 +35,15 @@ class ReturnType extends ReturnTypeParent implements ReturnTypeInterface, Fixtur
     public function manyIterables() { }
     public function nullableReturnableTypeNormalization() { }
     public function nonNullableReturnableTypeNormalization() { }
-    public function commonNonObjectReturnedTypeNormalization() { }
     public function bracketsNormalization() { }
     public function booleanNormalization() { }
     public function callableNormalization1() { }
     public function callableNormalization2() { }
     public function otherTypeNormalization() { }
     public function arrayWithLessThanSignNormalization() { }
+    public function this() { }
+    public function mixed() { }
+    public function nullableMixed() { }
+    public function static() { }
     public function outsideMethod() { }
 }
diff --git a/src/Symfony/Component/ErrorHandler/Tests/Fixtures/ReturnTypeParent.php b/src/Symfony/Component/ErrorHandler/Tests/Fixtures/ReturnTypeParent.php
index 45f8abad74..145686c8dc 100644
--- a/src/Symfony/Component/ErrorHandler/Tests/Fixtures/ReturnTypeParent.php
+++ b/src/Symfony/Component/ErrorHandler/Tests/Fixtures/ReturnTypeParent.php
@@ -29,7 +29,7 @@ abstract class ReturnTypeParent extends ReturnTypeGrandParent implements ReturnT
     abstract public function realReturnTypeIsAlreadyThereWithNull();
 
     /**
-     * @return mixed
+     * @return resource
      */
     public function oneCommonNonObjectReturnedType()
     {
@@ -143,13 +143,6 @@ abstract class ReturnTypeParent extends ReturnTypeGrandParent implements ReturnT
     {
     }
 
-    /**
-     * @return $this
-     */
-    public function commonNonObjectReturnedTypeNormalization()
-    {
-    }
-
     /**
      * @return \ArrayIterator[]
      */
@@ -192,6 +185,34 @@ abstract class ReturnTypeParent extends ReturnTypeGrandParent implements ReturnT
     {
     }
 
+    /**
+     * @return $this
+     */
+    public function this()
+    {
+    }
+
+    /**
+     * @return mixed
+     */
+    public function mixed()
+    {
+    }
+
+    /**
+     * @return mixed|null
+     */
+    public function nullableMixed()
+    {
+    }
+
+    /**
+     * @return static
+     */
+    public function static()
+    {
+    }
+
     /**
      * @return int
      */