diff --git a/Request/UpdateRelatedRecords.php b/Request/UpdateRelatedRecords.php
new file mode 100644
index 0000000..c60cd62
--- /dev/null
+++ b/Request/UpdateRelatedRecords.php
@@ -0,0 +1,88 @@
+<?php
+namespace CristianPontes\ZohoCRMClient\Request;
+
+use CristianPontes\ZohoCRMClient\Response\MutationResult;
+
+/**
+ * UpdateRelatedRecords API Call
+ *
+ * You can use the updateRelatedRecords method to update records related to another record.
+ *
+ * @see https://www.zoho.eu/crm/help/api/updaterelatedrecords.html
+ */
+class UpdateRelatedRecords extends AbstractRequest
+{
+    /** @var array */
+    private $records = array();
+
+    /**
+     *
+     */
+    protected function configureRequest()
+    {
+        $this->request
+            ->setMethod('updateRelatedRecords')
+            ->setParam('version', 4);
+    }
+
+    /**
+     * @param array $record Record as a simple associative array
+     * @return UpdateRelatedRecords
+     */
+    public function addRecord(array $record)
+    {
+        $this->records[] = $record;
+        return $this;
+    }
+
+    /**
+     * @return array
+     */
+    public function getRecords()
+    {
+        return $this->records;
+    }
+
+    /**
+     * @param array $records array containing records otherwise added by addRecord()
+     * @return UpdateRelatedRecords
+     */
+    public function setRecords(array $records)
+    {
+        $this->records = $records;
+        return $this;
+    }
+
+    /**
+     * The ID of the record to be updated.
+     * @param $id
+     * @return UpdateRelatedRecords
+     */
+    public function id($id)
+    {
+        $this->request->setParam('id', $id);
+        return $this;
+    }
+
+    /**
+     * The module to which a record is related.
+     * i.e: If a lead related to a campaign needs to be updated, the value for this parameter will be Leads.
+     * @param $module
+     * @return UpdateRelatedRecords
+     */
+    public function relatedModule($module)
+    {
+        $this->request->setParam('relatedModule', $module);
+        return $this;
+    }
+
+    /**
+     * @return MutationResult[]
+     */
+    public function request()
+    {
+        return $this->request
+            ->setParam('xmlData', $this->records)
+            ->request();
+    }
+}
diff --git a/Tests/Request/UpdateRelatedRecordsTest.php b/Tests/Request/UpdateRelatedRecordsTest.php
new file mode 100644
index 0000000..4d17469
--- /dev/null
+++ b/Tests/Request/UpdateRelatedRecordsTest.php
@@ -0,0 +1,68 @@
+<?php
+namespace CristianPontes\ZohoCRMClient\Tests\Request;
+
+use CristianPontes\ZohoCRMClient\Request;
+use CristianPontes\ZohoCRMClient\Transport\MockTransport;
+use CristianPontes\ZohoCRMClient\Transport\TransportRequest;
+
+class UpdateRelatedRecordsTest extends \PHPUnit_Framework_TestCase
+{
+    /** @var MockTransport */
+    private $transport;
+
+    /** @var TransportRequest */
+    private $request;
+
+    /** @var Request\UpdateRelatedRecords */
+    private $updateRelatedRecords;
+
+    protected function setUp()
+    {
+        $this->transport = new MockTransport();
+        $this->request = new TransportRequest('Products');
+        $this->request->setTransport($this->transport);
+        $this->updateRelatedRecords = new Request\UpdateRelatedRecords($this->request);
+    }
+
+    public function testInitial()
+    {
+        $this->assertEquals('updateRelatedRecords', $this->request->getMethod());
+        $this->assertEquals(
+            4,
+            $this->request->getParam('version')
+        );
+    }
+
+    public function testRecords()
+    {
+        $record = array(
+            'PRODUCTID'     => '508020000000061987',
+            'list_price'    => '100.00'
+        );
+
+        $this->updateRelatedRecords->addRecord($record);
+
+        $this->transport->response = true;
+
+        $this->assertTrue($this->updateRelatedRecords->request());
+        $this->assertEquals(array('version' => 4, 'xmlData' =>  array($record)), $this->transport->paramList);
+    }
+
+    public function testRelatedModule()
+    {
+        $this->updateRelatedRecords->relatedModule('Leads');
+        $this->assertEquals(
+            'Leads',
+            $this->request->getParam('relatedModule')
+        );
+    }
+
+    public function testId()
+    {
+        $this->updateRelatedRecords->id('123');
+        $this->assertEquals(
+            123,
+            $this->request->getParam('id')
+        );
+    }
+}
diff --git a/Tests/ZohoCRMClientTest.php b/Tests/ZohoCRMClientTest.php
index dd3f850..91d7398 100644
--- a/Tests/ZohoCRMClientTest.php
+++ b/Tests/ZohoCRMClientTest.php
@@ -54,6 +54,34 @@ public function testUpdateRecords()
         $this->assertInstanceOf('CristianPontes\ZohoCRMClient\Request\UpdateRecords', $request);
     }
 
+    public function testUpdateRelatedRecords()
+    {
+        $request = $this->client->updateRelatedRecords();
+
+        $this->assertInstanceOf('CristianPontes\ZohoCRMClient\Request\UpdateRelatedRecords', $request);
+    }
+
+    public function testSearchRecords()
+    {
+        $request = $this->client->searchRecords();
+
+        $this->assertInstanceOf('CristianPontes\ZohoCRMClient\Request\SearchRecords', $request);
+    }
+
+    public function testGetSearchRecordsByPDC()
+    {
+        $request = $this->client->getSearchRecordsByPDC();
+
+        $this->assertInstanceOf('CristianPontes\ZohoCRMClient\Request\GetSearchRecordsByPDC', $request);
+    }
+
+    public function testConvertLead()
+    {
+        $request = $this->client->ConvertLead();
+
+        $this->assertInstanceOf('CristianPontes\ZohoCRMClient\Request\ConvertLead', $request);
+    }
+
     public function testGetFields()
     {
         $request = $this->client->getFields();
@@ -68,6 +96,13 @@ public function testDeleteRecords()
         $this->assertInstanceOf('CristianPontes\ZohoCRMClient\Request\DeleteRecords', $request);
     }
 
+    public function testGetDeletedRecordIds()
+    {
+        $request = $this->client->getDeletedRecordIds();
+
+        $this->assertInstanceOf('CristianPontes\ZohoCRMClient\Request\GetDeletedRecordIds', $request);
+    }
+
     public function testUploadFile()
     {
         $request = $this->client->uploadFile();
@@ -75,6 +110,20 @@ public function testUploadFile()
         $this->assertInstanceOf('CristianPontes\ZohoCRMClient\Request\UploadFile', $request);
     }
 
+    public function testDownloadFile()
+    {
+        $request = $this->client->downloadFile();
+
+        $this->assertInstanceOf('CristianPontes\ZohoCRMClient\Request\DownloadFile', $request);
+    }
+
+    public function testDeleteFile()
+    {
+        $request = $this->client->deleteFile();
+
+        $this->assertInstanceOf('CristianPontes\ZohoCRMClient\Request\DeleteFile', $request);
+    }
+
     public function testRequest()
     {
         $request = $this->client->publicRequest();
diff --git a/Transport/Transport.php b/Transport/Transport.php
index 993b828..254de05 100644
--- a/Transport/Transport.php
+++ b/Transport/Transport.php
@@ -10,7 +10,7 @@ interface Transport
      * @param string $module
      * @param string $method
      * @param array $paramList
-     * @return array
+     * @return string
      */
     public function call($module, $method, array $paramList);
 }
\ No newline at end of file
diff --git a/Transport/XmlDataTransportDecorator.php b/Transport/XmlDataTransportDecorator.php
index b37ecf3..caef284 100644
--- a/Transport/XmlDataTransportDecorator.php
+++ b/Transport/XmlDataTransportDecorator.php
@@ -17,7 +17,7 @@ class XmlDataTransportDecorator extends AbstractTransportDecorator
     private $module;
     /** @var string */
     private $method;
-    /** @var string */
+    /** @var array */
     private $call_params;
 
 
@@ -62,6 +62,7 @@ public function call($module, $method, array $paramList)
     private function encodeRequestConvertLead(array $paramList)
     {
         $root = new SimpleXMLElement('<Potentials></Potentials>');
+        $options = array();
 
         // row 1 (options)
         foreach (ConvertLead::getOptionFields() as $optionName) {
@@ -87,14 +88,15 @@ private function encodeRequestConvertLead(array $paramList)
 
     /**
      * @param array $records
-     * @param string $rootName
-     * @param array $options
      * @throws \CristianPontes\ZohoCRMClient\Exception\RuntimeException
      * @return string XML representation of the records
      */
     private function encodeRecords(array $records)
     {
-        $root = new SimpleXMLElement('<'.$this->module.'></'.$this->module.'>');
+        $module = $this->method == 'updateRelatedRecords' ?
+                $this->call_params['relatedModule'] : $this->module;
+
+        $root = new SimpleXMLElement('<'.$module.'></'.$module.'>');
 
         foreach ($records as $no => $record) {
             $row = $root->addChild('row');
@@ -111,7 +113,6 @@ private function encodeRecords(array $records)
      * @param array $record
      * @param string $childName XML node name
      * @param SimpleXMLElement $xml
-     * @return string XML representation of the record
      */
     private function encodeRecord($record, $childName, &$xml)
     {
@@ -140,7 +141,7 @@ private function encodeRecord($record, $childName, &$xml)
 
     /**
      * @param $array
-     * @param $xml
+     * @param SimpleXMLElement $xml
      */
     private function parseNestedValues($array, &$xml)
     {
@@ -171,7 +172,7 @@ private function parseNestedValues($array, &$xml)
      * @throws Exception\UnexpectedValueException When invalid XML is given to parse
      * @throws Exception\NoDataException when Zoho tells us there is no data
      * @throws Exception\ZohoErrorException when content is a Error response
-     * @return Response\Record[]|Response\Field[]|Response\MutationResult[]
+     * @return bool|Response\Record|Response\Record[]|Response\Field[]|Response\MutationResult
      */
     private function parse($content)
     {
@@ -222,6 +223,10 @@ private function parse($content)
             return $this->parseResponseConvertLead($xml);
         }
 
+        if ($this->method == 'updateRelatedRecords') {
+            return $this->parseUpdateRelatedRecords($xml);
+        }
+
         if (isset($xml->result->{$this->module})) {
             return $this->parseResponseGetRecords($xml);
         }
@@ -251,7 +256,7 @@ private function parseResponseGetRecords(SimpleXMLElement $xml)
      * @param SimpleXMLElement $row
      * @return Response\Record
      */
-    private function rowToRecord(SimpleXMLElement $row)
+    private function rowToRecord($row)
     {
         $data = array();
         foreach($row as $field) {
@@ -271,7 +276,7 @@ private function rowToRecord(SimpleXMLElement $row)
     }
 
     /**
-     * @param $xml
+     * @param SimpleXMLElement $xml
      * @return array
      */
     private function parseResponseGetFields($xml)
@@ -304,7 +309,7 @@ private function parseResponseGetFields($xml)
     }
 
     /**
-     * @param $xml
+     * @param SimpleXMLElement $xml
      * @return Response\MutationResult
      */
     private function parseResponseDeleteRecords($xml)
@@ -313,7 +318,7 @@ private function parseResponseDeleteRecords($xml)
     }
 
     /**
-     * @param $xml
+     * @param SimpleXMLElement $xml
      * @return Response\MutationResult
      */
     private function parseResponseUploadFile($xml)
@@ -330,7 +335,7 @@ private function parseResponseUploadFile($xml)
     }
 
     /**
-     * @param $xml
+     * @param SimpleXMLElement $xml
      * @return Response\MutationResult
      */
     private function parseResponseDeleteFile($xml)
@@ -357,7 +362,7 @@ private function parseResponseDownloadFile($file_content)
     }
 
     /**
-     * @param $xml
+     * @param SimpleXMLElement $xml
      * @return Response\Record
      */
     private function parseResponseGetDeletedRecordIds($xml)
@@ -367,7 +372,7 @@ private function parseResponseGetDeletedRecordIds($xml)
     }
 
     /**
-     * @param $xml
+     * @param SimpleXMLElement $xml
      * @return array
      */
     private function parseResponseConvertLead($xml)
@@ -380,6 +385,23 @@ private function parseResponseConvertLead($xml)
         return $records;
     }
 
+    /**
+     * @param SimpleXMLElement $xml
+     * @return Response\Record
+     */
+    private function parseUpdateRelatedRecords($xml)
+    {
+        $result  = (array) $xml->result;
+        $added   = isset($result['added-ids'])   ? eval('return ' . $result['added-ids'] . ';')   : [];
+        $updated = isset($result['updated-ids']) ? eval('return ' . $result['updated-ids'] . ';') : [];
+        $data = array(
+            'added-ids'   => $added,
+            'updated-ids' => $updated
+        );
+        return new Response\Record($data, 1);
+    }
+
+
     /**
      * @param $xml
      * @return array
diff --git a/ZohoCRMClient.php b/ZohoCRMClient.php
index d631d06..983d465 100644
--- a/ZohoCRMClient.php
+++ b/ZohoCRMClient.php
@@ -110,6 +110,15 @@ public function updateRecords()
         return new Request\UpdateRecords($this->request());
     }
 
+
+    /**
+     * @return Request\UpdateRelatedRecords
+     */
+    public function updateRelatedRecords()
+    {
+        return new Request\UpdateRelatedRecords($this->request());
+    }
+
     /**
      * @return Request\ConvertLead
      */
diff --git a/readme.md b/readme.md
index 05d2e52..1b3465c 100644
--- a/readme.md
+++ b/readme.md
@@ -65,9 +65,9 @@ echo "</pre>";
 + deleteFile
 + getFields
 + convertLead
++ updateRelatedRecords
 
 ## Documentation
-
 All the methods previously mentioned are well explained in the [library documentation page](https://cristianpontes.github.io/zoho-crm-client-php/).
 <br>
-Also, the code are well documented too, so you'll be able to look around the methods, functions and check how them work.
\ No newline at end of file
+Also, the code is well documented too, so you'll be able to look at the methods, functions and check how they work.
\ No newline at end of file