diff --git a/system/libraries/Cart.php b/system/libraries/Cart.php
index 8a2516f..ec67d9b 100644
--- a/system/libraries/Cart.php
+++ b/system/libraries/Cart.php
@@ -358,10 +358,8 @@
 				$items['price'] = (float) $items['price'];
 			}
 			
-			// product name & id shouldn't be changed
-			$keys = array_diff($keys, array('id', 'name'));			
-			
-			foreach ($keys as $key) 
+			// product id & name shouldn't be changed			
+			foreach (array_diff($keys, array('id', 'name')) as $key) 
 			{
 				$this->_cart_contents[$items['rowid']][$key] = $items[$key];
 			}
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index b5b31dc..76ee7ed 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -303,6 +303,7 @@
       -  Added method ``remove()`` to remove a cart item, updating with quantity of 0 seemed like a hack but has remained to retain compatibility.
       -  Added method ``get_item()`` to enable retrieving data for a single cart item.
       -  Added unicode support for product names.
+      -	 ``update()`` now supports updating all properties attached to an item.
 
    -  :doc:`Image Manipulation Library <libraries/image_lib>` changes include:
 
diff --git a/user_guide_src/source/libraries/cart.rst b/user_guide_src/source/libraries/cart.rst
index 015f1c9..6d0dd2e 100644
--- a/user_guide_src/source/libraries/cart.rst
+++ b/user_guide_src/source/libraries/cart.rst
@@ -88,6 +88,18 @@
 your data among all your products in order to make displaying the
 information in a table easier.
 
+::
+
+	$data = array(
+	               'id'      => 'sku_123ABC',
+	               'qty'     => 1,
+	               'price'   => 39.95,
+	               'name'    => 'T-Shirt',
+	               'coupon'	 => 'XMAS-50OFF'
+	            );
+
+	$this->cart->insert($data);
+
 The insert() method will return the $rowid if you successfully insert a
 single item.
 
@@ -195,8 +207,8 @@
 To update the information in your cart, you must pass an array
 containing the Row ID and quantity to the $this->cart->update()
 function, you may also update any property you have previously 
-defined when inserting the item such like (options, price 
-or other custom fields you defined).
+defined when inserting the item such as options, price 
+or other custom fields you defined.
 
 .. note:: If the quantity is set to zero, the item will be removed from
 	the cart.
@@ -205,6 +217,7 @@
 
 	$data = array(
 	               'rowid' => 'b99ccdf16028f015540f341130b6d8ec',
+	               'price' => 10,
 	               'qty'   => 3
 	            );