diff --git a/composer.json b/composer.json
index 7da2fd52..ef466631 100755
--- a/composer.json
+++ b/composer.json
@@ -1,6 +1,6 @@
 {
     "name": "myparcelnl/sdk",
-    "version": "v1.2.2",
+    "version": "v1.2.3",
     "description": "This package is designed to send and receive data from MyParcel by means of an API.",
     "homepage": "https://www.myparcel.nl",
     "tags": ["MyParcel", "My Parcel", "Post NL", "PostNL"],
diff --git a/src/Model/MyParcelCustomsItem.php b/src/Model/MyParcelCustomsItem.php
index 65c0eb27..1ea3d8dc 100644
--- a/src/Model/MyParcelCustomsItem.php
+++ b/src/Model/MyParcelCustomsItem.php
@@ -72,7 +72,7 @@ public function getAmount()
      */
     public function setAmount($amount)
     {
-        $this->amount = $amount;
+        $this->amount = (int)$amount;
 
         return $this;
     }
@@ -99,7 +99,7 @@ public function setWeight($weight)
             throw new \Exception('Weight must be set for a MyParcel product');
         }
 
-        $this->weight = $weight;
+        $this->weight = (int)$weight;
 
         return $this;
     }