diff --git a/src/Type/Symfony/SerializerInterfaceDynamicReturnTypeExtension.php b/src/Type/Symfony/SerializerInterfaceDynamicReturnTypeExtension.php
index 671a106d..b6f7e33b 100644
--- a/src/Type/Symfony/SerializerInterfaceDynamicReturnTypeExtension.php
+++ b/src/Type/Symfony/SerializerInterfaceDynamicReturnTypeExtension.php
@@ -34,9 +34,14 @@ public function getTypeFromMethodCall(MethodReflection $methodReflection, Method
 
 		$objectName = $argType->getValue();
 
+		return $this->getType($objectName);
+	}
+
+	private function getType(string $objectName): Type
+	{
 		if (substr($objectName, -2) === '[]') {
 			// The key type is determined by the data
-			return new ArrayType(new MixedType(false), new ObjectType(substr($objectName, 0, -2)));
+			return new ArrayType(new MixedType(false), $this->getType(substr($objectName, 0, -2)));
 		}
 
 		return new ObjectType($objectName);
diff --git a/tests/Type/Symfony/SerializerInterfaceDynamicReturnTypeExtensionTest.php b/tests/Type/Symfony/SerializerInterfaceDynamicReturnTypeExtensionTest.php
index 3cf715b5..fad62b3b 100644
--- a/tests/Type/Symfony/SerializerInterfaceDynamicReturnTypeExtensionTest.php
+++ b/tests/Type/Symfony/SerializerInterfaceDynamicReturnTypeExtensionTest.php
@@ -24,6 +24,7 @@ public function getContentProvider(): Iterator
 	{
 		yield ['$first', 'Bar'];
 		yield ['$second', 'array<Bar>'];
+		yield ['$third', 'array<array<Bar>>'];
 	}
 
 }
diff --git a/tests/Type/Symfony/serializer.php b/tests/Type/Symfony/serializer.php
index 98550c5f..a19065be 100644
--- a/tests/Type/Symfony/serializer.php
+++ b/tests/Type/Symfony/serializer.php
@@ -4,5 +4,6 @@
 
 $first = $serializer->deserialize('bar', 'Bar', 'format');
 $second = $serializer->deserialize('bar', 'Bar[]', 'format');
+$third = $serializer->deserialize('bar', 'Bar[][]', 'format');
 
 die;