diff --git a/lib/Doctrine/ORM/Mapping/Builder/ClassMetadataBuilder.php b/lib/Doctrine/ORM/Mapping/Builder/ClassMetadataBuilder.php
index 3af7f3036da..4647bebab3c 100644
--- a/lib/Doctrine/ORM/Mapping/Builder/ClassMetadataBuilder.php
+++ b/lib/Doctrine/ORM/Mapping/Builder/ClassMetadataBuilder.php
@@ -4,11 +4,7 @@
 
 namespace Doctrine\ORM\Mapping\Builder;
 
-use Doctrine\Deprecations\Deprecation;
 use Doctrine\ORM\Mapping\ClassMetadata;
-use Doctrine\ORM\Mapping\ClassMetadataInfo;
-
-use function get_class;
 
 /**
  * Builder Object for ClassMetadata
@@ -17,29 +13,15 @@
  */
 class ClassMetadataBuilder
 {
-    /** @var ClassMetadataInfo */
+    /** @var ClassMetadata */
     private $cm;
 
-    public function __construct(ClassMetadataInfo $cm)
+    public function __construct(ClassMetadata $cm)
     {
-        if (! $cm instanceof ClassMetadata) {
-            Deprecation::trigger(
-                'doctrine/orm',
-                'https://github.com/doctrine/orm/pull/249',
-                'Passing an instance of %s to %s is deprecated, please pass a ClassMetadata instance instead.',
-                get_class($cm),
-                __METHOD__,
-                ClassMetadata::class
-            );
-        }
-
         $this->cm = $cm;
     }
 
-    /**
-     * @return ClassMetadataInfo
-     */
-    public function getClassMetadata()
+    public function getClassMetadata(): ClassMetadata
     {
         return $this->cm;
     }
diff --git a/lib/Doctrine/ORM/Mapping/ClassMetadataFactory.php b/lib/Doctrine/ORM/Mapping/ClassMetadataFactory.php
index 11c156ba7b0..17077acdd88 100644
--- a/lib/Doctrine/ORM/Mapping/ClassMetadataFactory.php
+++ b/lib/Doctrine/ORM/Mapping/ClassMetadataFactory.php
@@ -249,7 +249,7 @@ protected function validateRuntimeMetadata(ClassMetadata $class, ?ClassMetadataI
                     }
                 }
             } else {
-                assert($parent instanceof ClassMetadataInfo); // https://github.com/doctrine/orm/issues/8746
+                assert($parent instanceof ClassMetadata); // https://github.com/doctrine/orm/issues/8746
                 if (
                     ! $class->reflClass->isAbstract()
                     && ! in_array($class->name, $class->discriminatorMap, true)
@@ -477,7 +477,7 @@ private function addInheritedSqlResultSetMappings(ClassMetadata $subClass, Class
      *
      * @throws ORMException
      */
-    private function completeIdGeneratorMapping(ClassMetadataInfo $class): void
+    private function completeIdGeneratorMapping(ClassMetadata $class): void
     {
         $idGenType = $class->generatorType;
         if ($idGenType === ClassMetadata::GENERATOR_TYPE_AUTO) {
@@ -612,7 +612,7 @@ private function truncateSequenceName(string $schemaElementName): string
     /**
      * Inherits the ID generator mapping from a parent class.
      */
-    private function inheritIdGeneratorMapping(ClassMetadataInfo $class, ClassMetadataInfo $parent): void
+    private function inheritIdGeneratorMapping(ClassMetadata $class, ClassMetadata $parent): void
     {
         if ($parent->isIdGeneratorSequence()) {
             $class->setSequenceGeneratorDefinition($parent->sequenceGeneratorDefinition);
diff --git a/lib/Doctrine/ORM/Mapping/Driver/DatabaseDriver.php b/lib/Doctrine/ORM/Mapping/Driver/DatabaseDriver.php
index 9b9799dc448..e6c3232f2b1 100644
--- a/lib/Doctrine/ORM/Mapping/Driver/DatabaseDriver.php
+++ b/lib/Doctrine/ORM/Mapping/Driver/DatabaseDriver.php
@@ -14,7 +14,6 @@
 use Doctrine\Inflector\Inflector;
 use Doctrine\Inflector\InflectorFactory;
 use Doctrine\ORM\Mapping\ClassMetadata;
-use Doctrine\ORM\Mapping\ClassMetadataInfo;
 use Doctrine\ORM\Mapping\MappingException;
 use Doctrine\Persistence\Mapping\ClassMetadata as PersistenceClassMetadata;
 use Doctrine\Persistence\Mapping\Driver\MappingDriver;
@@ -319,7 +318,7 @@ private function reverseEngineerMappingFromDatabase(): void
     /**
      * Build indexes from a class metadata.
      */
-    private function buildIndexes(ClassMetadataInfo $metadata): void
+    private function buildIndexes(ClassMetadata $metadata): void
     {
         $tableName = $metadata->table['name'];
         $indexes   = $this->tables[$tableName]->getIndexes();
@@ -342,7 +341,7 @@ private function buildIndexes(ClassMetadataInfo $metadata): void
     /**
      * Build field mapping from class metadata.
      */
-    private function buildFieldMappings(ClassMetadataInfo $metadata): void
+    private function buildFieldMappings(ClassMetadata $metadata): void
     {
         $tableName      = $metadata->table['name'];
         $columns        = $this->tables[$tableName]->getColumns();
@@ -457,7 +456,7 @@ private function buildFieldMapping(string $tableName, Column $column): array
      *
      * @return void
      */
-    private function buildToOneAssociationMappings(ClassMetadataInfo $metadata)
+    private function buildToOneAssociationMappings(ClassMetadata $metadata)
     {
         $tableName   = $metadata->table['name'];
         $primaryKeys = $this->getTablePrimaryKeys($this->tables[$tableName]);
diff --git a/lib/Doctrine/ORM/PersistentCollection.php b/lib/Doctrine/ORM/PersistentCollection.php
index aa8cb92b65a..8b3db0a7c9a 100644
--- a/lib/Doctrine/ORM/PersistentCollection.php
+++ b/lib/Doctrine/ORM/PersistentCollection.php
@@ -131,10 +131,7 @@ public function getOwner()
         return $this->owner;
     }
 
-    /**
-     * @return Mapping\ClassMetadata
-     */
-    public function getTypeClass(): Mapping\ClassMetadataInfo
+    public function getTypeClass(): Mapping\ClassMetadata
     {
         return $this->typeClass;
     }
diff --git a/lib/Doctrine/ORM/Tools/SchemaValidator.php b/lib/Doctrine/ORM/Tools/SchemaValidator.php
index 23231e4eaa7..1cc79e5d2a0 100644
--- a/lib/Doctrine/ORM/Tools/SchemaValidator.php
+++ b/lib/Doctrine/ORM/Tools/SchemaValidator.php
@@ -5,10 +5,8 @@
 namespace Doctrine\ORM\Tools;
 
 use Doctrine\DBAL\Types\Type;
-use Doctrine\Deprecations\Deprecation;
 use Doctrine\ORM\EntityManagerInterface;
 use Doctrine\ORM\Mapping\ClassMetadata;
-use Doctrine\ORM\Mapping\ClassMetadataInfo;
 
 use function array_diff;
 use function array_key_exists;
@@ -17,7 +15,6 @@
 use function class_exists;
 use function class_parents;
 use function count;
-use function get_class;
 use function implode;
 use function in_array;
 
@@ -70,19 +67,8 @@ public function validateMapping()
      * @return string[]
      * @psalm-return list<string>
      */
-    public function validateClass(ClassMetadataInfo $class)
+    public function validateClass(ClassMetadata $class)
     {
-        if (! $class instanceof ClassMetadata) {
-            Deprecation::trigger(
-                'doctrine/orm',
-                'https://github.com/doctrine/orm/pull/249',
-                'Passing an instance of %s to %s is deprecated, please pass a ClassMetadata instance instead.',
-                get_class($class),
-                __METHOD__,
-                ClassMetadata::class
-            );
-        }
-
         $ce  = [];
         $cmf = $this->em->getMetadataFactory();
 
diff --git a/phpstan-baseline.neon b/phpstan-baseline.neon
index 1248b7147e5..35527c844e9 100644
--- a/phpstan-baseline.neon
+++ b/phpstan-baseline.neon
@@ -140,11 +140,6 @@ parameters:
 			count: 1
 			path: lib/Doctrine/ORM/Mapping/ClassMetadataFactory.php
 
-		-
-			message: "#^Parameter \\#2 \\$class of method Doctrine\\\\ORM\\\\Mapping\\\\QuoteStrategy\\:\\:getSequenceName\\(\\) expects Doctrine\\\\ORM\\\\Mapping\\\\ClassMetadata, Doctrine\\\\ORM\\\\Mapping\\\\ClassMetadataInfo given\\.$#"
-			count: 2
-			path: lib/Doctrine/ORM/Mapping/ClassMetadataFactory.php
-
 		-
 			message: "#^Method Doctrine\\\\ORM\\\\Mapping\\\\NamingStrategy\\:\\:joinColumnName\\(\\) invoked with 2 parameters, 1 required\\.$#"
 			count: 2