diff --git a/tests/Parser/Popo/ArrayInArray.php b/tests/Parser/Popo/ArrayInArray.php
new file mode 100644
index 0000000..8258a1d
--- /dev/null
+++ b/tests/Parser/Popo/ArrayInArray.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace PSX\Schema\Tests\Parser\Popo;
+
+class ArrayInArray
+{
+    /**
+     * @var array<array<float>>
+     */
+    public array $items;
+}
diff --git a/tests/Parser/PopoTest.php b/tests/Parser/PopoTest.php
index 482caf5..269462d 100644
--- a/tests/Parser/PopoTest.php
+++ b/tests/Parser/PopoTest.php
@@ -21,8 +21,12 @@
 namespace PSX\Schema\Tests\Parser;
 
 use PSX\Schema\Parser;
+use PSX\Schema\Tests\Parser\Popo\ArrayInArray;
 use PSX\Schema\Tests\Parser\Popo\Form_Container;
 use PSX\Schema\Tests\Parser\Popo\Form_Element;
+use PSX\Schema\Type\ArrayPropertyType;
+use PSX\Schema\Type\NumberPropertyType;
+use PSX\Schema\Type\StructDefinitionType;
 
 /**
  * PopoTest
@@ -48,4 +52,20 @@ public function testDiscriminator()
 
         $this->assertDiscriminator($schema);
     }
+
+    public function testArrayInArray()
+    {
+        $parser = new Parser\Popo();
+        $schema = $parser->parse(ArrayInArray::class);
+
+        $object = $schema->getDefinitions()->getType($schema->getRoot());
+        $this->assertInstanceOf(StructDefinitionType::class, $object);
+
+        $items = $object->getProperty('items');
+        $this->assertInstanceOf(ArrayPropertyType::class, $items);
+
+        $array = $items->getSchema();
+        $this->assertInstanceOf(ArrayPropertyType::class, $array);
+        $this->assertInstanceOf(NumberPropertyType::class, $array->getSchema());
+    }
 }