diff --git a/src/AtolOnlineClient/Request/V4/ReceiptItemRequest.php b/src/AtolOnlineClient/Request/V4/ReceiptItemRequest.php
index 844da91..b9f6324 100644
--- a/src/AtolOnlineClient/Request/V4/ReceiptItemRequest.php
+++ b/src/AtolOnlineClient/Request/V4/ReceiptItemRequest.php
@@ -53,11 +53,11 @@ class ReceiptItemRequest
     private $price;
 
     /**
-     * @var integer
+     * @var float
      * required
      * @Serializer\Groups({"set", "get"})
      * @Serializer\SerializedName("quantity")
-     * @Serializer\Type("integer")
+     * @Serializer\Type("float")
      */
     private $quantity;
 
@@ -175,17 +175,17 @@ class ReceiptItemRequest
     }
 
     /**
-     * @return int
+     * @return float
      */
-    public function getQuantity(): int
+    public function getQuantity(): float
     {
         return $this->quantity;
     }
 
     /**
-     * @param int $quantity
+     * @param float $quantity
      */
-    public function setQuantity(int $quantity): void
+    public function setQuantity(float $quantity): void
     {
         $this->quantity = $quantity;
     }
diff --git a/tests/AtolOnlineClient/AtolOnlineTest.php b/tests/AtolOnlineClient/AtolOnlineTest.php
index b9f58f7..22b098f 100644
--- a/tests/AtolOnlineClient/AtolOnlineTest.php
+++ b/tests/AtolOnlineClient/AtolOnlineTest.php
@@ -160,7 +160,7 @@ class AtolOnlineTest extends TestCase
         $request->setTimestamp('17.07.2019 10:14:22');
 
         $this->assertEquals(
-            '{"external_id":"test","receipt":{"client":{"email":"test@test.local"},"company":{"email":"test@test.local","inn":"11111111","payment_address":"address"},"items":[{"name":"test item","price":100.1,"quantity":1,"sum":100.1,"measurement_unit":"kg","payment_method":"advance","payment_object":"agent_commission","vat":{"type":"vat20","sum":20.2},"nomenclature_code":"00"}],"payments":[{"type":0,"sum":100.1}],"vats":[{"type":"vat20","sum":20.2}],"total":100.1},"timestamp":"17.07.2019 10:14:22","service":{"callback_url":"test.local"}}',
+            '{"external_id":"test","receipt":{"client":{"email":"test@test.local"},"company":{"email":"test@test.local","inn":"11111111","payment_address":"address"},"items":[{"name":"test item","price":100.1,"quantity":1.1,"sum":100.1,"measurement_unit":"kg","payment_method":"advance","payment_object":"agent_commission","vat":{"type":"vat20","sum":20.2},"nomenclature_code":"00"}],"payments":[{"type":0,"sum":100.1}],"vats":[{"type":"vat20","sum":20.2}],"total":100.1},"timestamp":"17.07.2019 10:14:22","service":{"callback_url":"test.local"}}',
             $this->atol->serializeOperationRequest($request)
         );
     }
diff --git a/tests/AtolOnlineClient/Traits/PaymentReceiptRequestTrait.php b/tests/AtolOnlineClient/Traits/PaymentReceiptRequestTrait.php
index 5933dce..a72cf1f 100644
--- a/tests/AtolOnlineClient/Traits/PaymentReceiptRequestTrait.php
+++ b/tests/AtolOnlineClient/Traits/PaymentReceiptRequestTrait.php
@@ -31,7 +31,7 @@ trait PaymentReceiptRequestTrait
         $item = new ReceiptItemRequest();
         $item->setName('test item');
         $item->setPrice(100.1);
-        $item->setQuantity(1);
+        $item->setQuantity(1.1);
         $item->setSum(100.1);
         $item->setMeasurementUnit('kg');
         $item->setPaymentMethod(ReceiptItemRequest::PAYMENT_METHOD_ADVANCE);