diff --git a/config/services.xml b/config/services.xml
index 6232ad049..5dc8457f6 100644
--- a/config/services.xml
+++ b/config/services.xml
@@ -169,10 +169,6 @@
             <tag name="nelmio_api_doc.schema_describer" priority="100" />
         </service>
 
-        <service id="nelmio_api_doc.schema_describer.array" class="Nelmio\ApiDocBundle\TypeDescriber\ArrayDescriber" public="false">
-            <tag name="nelmio_api_doc.schema_describer" />
-        </service>
-
         <service id="nelmio_api_doc.schema_describer.bool" class="Nelmio\ApiDocBundle\TypeDescriber\BoolDescriber" public="false">
             <tag name="nelmio_api_doc.schema_describer" />
         </service>
diff --git a/src/TypeDescriber/ArrayDescriber.php b/src/TypeDescriber/ArrayDescriber.php
deleted file mode 100644
index 1eb6e8245..000000000
--- a/src/TypeDescriber/ArrayDescriber.php
+++ /dev/null
@@ -1,61 +0,0 @@
-<?php
-
-/*
- * This file is part of the NelmioApiDocBundle package.
- *
- * (c) Nelmio
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Nelmio\ApiDocBundle\TypeDescriber;
-
-use OpenApi\Annotations\Schema;
-use Symfony\Component\TypeInfo\Type;
-use Symfony\Component\TypeInfo\Type\CollectionType;
-use Symfony\Component\TypeInfo\TypeFactoryTrait;
-
-/**
- * @implements TypeDescriberInterface<CollectionType>
- *
- * @experimental
- *
- * @internal
- */
-final class ArrayDescriber implements TypeDescriberInterface, TypeDescriberAwareInterface
-{
-    use TypeDescriberAwareTrait;
-
-    public function describe(Type $type, Schema $schema, array $context = []): void
-    {
-        if (!$type->getCollectionKeyType() instanceof Type\CompositeTypeInterface) {
-            return;
-        }
-
-        $collections = array_map(
-            fn (Type $keyType): CollectionType => TypeFactoryTrait::collection($type->getWrappedType(), $type->getCollectionValueType(), $keyType),
-            $type->getCollectionKeyType()->getTypes(),
-        );
-
-        if ($type->getCollectionKeyType() instanceof Type\UnionType) {
-            $describeType = Type::union(...$collections);
-        }
-
-        if ($type->getCollectionKeyType() instanceof Type\IntersectionType) {
-            $describeType = Type::intersection(...$collections);
-        }
-
-        if (!isset($describeType)) {
-            return;
-        }
-
-        $this->describer->describe($describeType, $schema, $context);
-    }
-
-    public function supports(Type $type, array $context = []): bool
-    {
-        return $type instanceof CollectionType
-            && $type->getCollectionKeyType() instanceof Type\CompositeTypeInterface;
-    }
-}
diff --git a/src/TypeDescriber/DictionaryDescriber.php b/src/TypeDescriber/DictionaryDescriber.php
index cc63ed06c..5d6c5de9e 100644
--- a/src/TypeDescriber/DictionaryDescriber.php
+++ b/src/TypeDescriber/DictionaryDescriber.php
@@ -40,7 +40,6 @@ public function describe(Type $type, Schema $schema, array $context = []): void
     public function supports(Type $type, array $context = []): bool
     {
         return $type instanceof CollectionType
-            && false === $type->getCollectionKeyType() instanceof Type\UnionType
             && $type->getCollectionKeyType()->isIdentifiedBy(TypeIdentifier::STRING);
     }
 }
diff --git a/src/TypeDescriber/ListDescriber.php b/src/TypeDescriber/ListDescriber.php
index 74a94fb7e..d697e6982 100644
--- a/src/TypeDescriber/ListDescriber.php
+++ b/src/TypeDescriber/ListDescriber.php
@@ -40,7 +40,6 @@ public function describe(Type $type, Schema $schema, array $context = []): void
     public function supports(Type $type, array $context = []): bool
     {
         return $type instanceof CollectionType
-            && false === $type->getCollectionKeyType() instanceof Type\UnionType
             && $type->getCollectionKeyType()->isIdentifiedBy(TypeIdentifier::INT);
     }
 }