diff --git a/src/Appwrite/Utopia/Response.php b/src/Appwrite/Utopia/Response.php
index a2c07d34b0..6cc2639f51 100644
--- a/src/Appwrite/Utopia/Response.php
+++ b/src/Appwrite/Utopia/Response.php
@@ -625,6 +625,11 @@ class Response extends SwooleResponse
                 }
             }
 
+            if (!$data->isSet($key) && !$rule['required']) { // set output key null if data key is not set and required is false
+                $output[$key] = null;
+                continue;
+            }
+
             if ($rule['array']) {
                 if (!is_array($data[$key])) {
                     throw new Exception($key . ' must be an array of type ' . $rule['type']);
diff --git a/tests/unit/Utopia/ResponseTest.php b/tests/unit/Utopia/ResponseTest.php
index cd111ec22c..452119fafb 100644
--- a/tests/unit/Utopia/ResponseTest.php
+++ b/tests/unit/Utopia/ResponseTest.php
@@ -55,12 +55,32 @@ class ResponseTest extends TestCase
             'integer' => 123,
             'boolean' => true,
             'hidden' => 'secret',
+            'array' => [
+                'string 1',
+                'string 2'
+            ],
         ]), 'single');
 
         $this->assertArrayHasKey('string', $output);
         $this->assertArrayHasKey('integer', $output);
         $this->assertArrayHasKey('boolean', $output);
         $this->assertArrayNotHasKey('hidden', $output);
+        $this->assertIsArray($output['array']);
+
+        // test optional array
+        $output = $this->response->output(new Document([
+            'string' => 'lorem ipsum',
+            'integer' => 123,
+            'boolean' => true,
+            'hidden' => 'secret',
+        ]), 'single');
+        $this->assertArrayHasKey('string', $output);
+        $this->assertArrayHasKey('integer', $output);
+        $this->assertArrayHasKey('boolean', $output);
+        $this->assertArrayNotHasKey('hidden', $output);
+        $this->assertArrayHasKey('array', $output);
+        $this->assertNull($output['array']);
+
     }
 
     public function testResponseModelRequired(): void
diff --git a/tests/unit/Utopia/Single.php b/tests/unit/Utopia/Single.php
index 3bd09ef6da..b7f36d10a8 100644
--- a/tests/unit/Utopia/Single.php
+++ b/tests/unit/Utopia/Single.php
@@ -28,6 +28,11 @@ class Single extends Model
                 'type' => self::TYPE_STRING,
                 'default' => 'default',
                 'required' => true
+            ])
+            ->addRule('array', [
+                'type' => self::TYPE_STRING,
+                'required' => false,
+                'array' => true,
             ]);
     }