diff --git a/Dbal/BlacklistSchemaAssetFilter.php b/Dbal/BlacklistSchemaAssetFilter.php
index 58c4a3bd2..e2b2d145a 100644
--- a/Dbal/BlacklistSchemaAssetFilter.php
+++ b/Dbal/BlacklistSchemaAssetFilter.php
@@ -6,6 +6,9 @@
 
 use function in_array;
 
+/**
+ * @deprecated Implement your own include/exclude mechanism
+ */
 class BlacklistSchemaAssetFilter
 {
     /** @var string[] */
diff --git a/DependencyInjection/Compiler/WellKnownSchemaFilterPass.php b/DependencyInjection/Compiler/WellKnownSchemaFilterPass.php
index f307baeba..254914ed8 100644
--- a/DependencyInjection/Compiler/WellKnownSchemaFilterPass.php
+++ b/DependencyInjection/Compiler/WellKnownSchemaFilterPass.php
@@ -12,6 +12,8 @@
 
 /**
  * Blacklist tables used by well-known Symfony classes.
+ *
+ * @deprecated Implement your own include/exclude mechanism
  */
 class WellKnownSchemaFilterPass implements CompilerPassInterface
 {
diff --git a/Tests/DependencyInjection/AbstractDoctrineExtensionTest.php b/Tests/DependencyInjection/AbstractDoctrineExtensionTest.php
index dfb4a79d6..f6b2df464 100644
--- a/Tests/DependencyInjection/AbstractDoctrineExtensionTest.php
+++ b/Tests/DependencyInjection/AbstractDoctrineExtensionTest.php
@@ -889,6 +889,7 @@ public static function dataWellKnownSchemaFilterServices()
 
     /**
      * @dataProvider dataWellKnownSchemaFilterServices
+     * @group legacy
      */
     public function testWellKnownSchemaFilterDefaultTables(string $fileName, string $tableName): void
     {
@@ -927,6 +928,7 @@ public static function dataWellKnownSchemaOverriddenTablesFilterServices()
 
     /**
      * @dataProvider dataWellKnownSchemaOverriddenTablesFilterServices
+     * @group legacy
      */
     public function testWellKnownSchemaFilterOverriddenTables(string $fileName, string $tableName): void
     {
diff --git a/UPGRADE-2.3.md b/UPGRADE-2.3.md
new file mode 100644
index 000000000..54a209cc1
--- /dev/null
+++ b/UPGRADE-2.3.md
@@ -0,0 +1,8 @@
+UPGRADE FROM 2.2 to 2.3
+=======================
+
+DependencyInjection
+--------
+
+ * `\Doctrine\Bundle\DoctrineBundle\Dbal\BlacklistSchemaAssetFilter` has been deprecated. Implement your own include/exclude strategies.
+ * `\Doctrine\Bundle\DoctrineBundle\DependencyInjection\Compiler\WellKnownSchemaFilterPass` has been deprecated. Implement your own include/exclude strategies.