diff --git a/src/LukeSnowden/GoogleShoppingFeed/Item.php b/src/LukeSnowden/GoogleShoppingFeed/Item.php
index 05fd35a..af40fc2 100644
--- a/src/LukeSnowden/GoogleShoppingFeed/Item.php
+++ b/src/LukeSnowden/GoogleShoppingFeed/Item.php
@@ -261,6 +261,17 @@ public function availability($availability)
         $this->nodes['availability'] = $node->value($availability)->_namespace($this->namespace);
     }
 
+    /**
+     * [availability_date description]
+     *
+     * @param  [type] $availability [description]
+     */
+    public function availability_date($availabilityDate)
+    {
+        $node = new Node('availability_date');
+        $this->nodes['availability_date'] = $node->value($availabilityDate)->_namespace($this->namespace)->addCdata();
+    }
+
     /**
      * [shipping description]
      * @param  [type] $code    [description]