diff --git a/CHANGELOG.md b/CHANGELOG.md
index 371ad47..0a0e5f5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+# v4.7.1
+
+### Bugfix
+
+- [#139](https://github.com/pedro-teixeira/correios/pull/139) Atualização do WebService de Rastreamento dos Correios
+
 # v4.7.0
 
 ### Bugfix
diff --git a/app/code/community/PedroTeixeira/Correios/Model/Carrier/CorreiosMethod.php b/app/code/community/PedroTeixeira/Correios/Model/Carrier/CorreiosMethod.php
index 9d0cdce..1cd0dca 100644
--- a/app/code/community/PedroTeixeira/Correios/Model/Carrier/CorreiosMethod.php
+++ b/app/code/community/PedroTeixeira/Correios/Model/Carrier/CorreiosMethod.php
@@ -583,94 +583,118 @@ public function getTracking($trackings)
     }
 
     /**
-     * Protected Get Tracking, opens the request to Correios
-     *
+     * Loads the parameters and calls the webservice using SOAP
+     * 
      * @param string $code Code
-     *
-     * @return bool
+     * 
+     * @return bool|array
+     * 
+     * @throws Exception
      */
-    protected function _getTracking($code)
+    protected function _getTrackingRequest($code)
     {
-        $error = Mage::getModel('shipping/tracking_result_error');
-        $error->setTracking($code);
-        $error->setCarrier($this->_code);
-        $error->setCarrierTitle($this->getConfigData('title'));
-        $error->setErrorMessage($this->getConfigData('urlerror'));
+        $response = false;
+        $params = array(
+            'usuario'   => $this->getConfigData('sro_username'),
+            'senha'     => $this->getConfigData('sro_password'),
+            'tipo'      => $this->getConfigData('sro_type'),
+            'resultado' => 'T',
+            'lingua'    => $this->getConfigData('sro_language'),
+            'objetos'   => $code,
+        );
 
-        $url = 'http://websro.correios.com.br/sro_bin/txect01$.QueryList';
-        $url .= '?P_LINGUA=001&P_TIPO=001&P_COD_UNI=' . $code;
         try {
-            $client = new Zend_Http_Client();
-            $client->setUri($url);
-            $content = $client->request();
-            $body    = $content->getBody();
+            $client = new SoapClient($this->getConfigData('url_sro_correios'));
+            $response = $client->buscaEventos($params);
+            if (empty($response)) {
+                throw new Exception("Empty response");
+            }
         } catch (Exception $e) {
-            $this->_result->append($error);
-            return false;
+            Mage::log("Soap Error: {$e->getMessage()}");
         }
+        return $response;
+    }
 
-        if (!preg_match('#<table ([^>]+)>(.*?)</table>#is', $body, $matches)) {
-            $this->_result->append($error);
-            return false;
-        }
-        $table = $matches[2];
-
-        if (!preg_match_all('/<tr>(.*)<\/tr>/i', $table, $columns, PREG_SET_ORDER)) {
-            $this->_result->append($error);
-            return false;
+    /**
+     * Loads tracking progress details
+     * 
+     * @param SimpleXMLElement $evento      XML Element Node
+     * @param bool             $isDelivered Delivery Flag
+     * 
+     * @return array
+     */
+    protected function _getTrackingProgressDetails(SimpleXMLElement $evento, $isDelivered=false)
+    {
+        $date = new Zend_Date($evento->data, 'dd/MM/YYYY', new Zend_Locale('pt_BR'));
+        $track = array(
+            'deliverydate'  => $date->toString('YYYY-MM-dd'),
+            'deliverytime'  => $evento->hora . ':00',
+            'status'        => $evento->descricao,
+        );
+        if (!$isDelivered) {
+            $msg = array($evento->descricao);
+            if (isset($evento->destino) && isset($evento->destino->local)) {
+                $msg = array("{$evento->descricao} para {$evento->destino->local}");
+            }
+            $track['activity'] = implode(' | ', $msg);
+            $track['deliverylocation'] = "{$evento->local} - {$evento->cidade}/{$evento->uf}";
         }
+        return $track;
+    }
 
+    /**
+     * Loads progress data using the WSDL response 
+     * 
+     * @param string $request Request response
+     * 
+     * @return array
+     */
+    protected function _getTrackingProgress($request)
+    {
+        $track = array();
         $progress = array();
-        for ($i = 0; $i < count($columns); $i++) {
-            $column = $columns[$i][1];
-
-            $description = '';
-            $found       = false;
-            if (preg_match('/<td rowspan="?2"?/i', $column)
-                && preg_match(
-                    '/<td rowspan="?2"?>(.*)<\/td><td>(.*)<\/td><td><font color="[A-Z0-9]{6}">(.*)<\/font><\/td>/i',
-                    $column,
-                    $matches
-                )
-            ) {
-                if (preg_match('/<td colspan="?2"?>(.*)<\/td>/i', $columns[$i + 1][1], $matchesDescription)) {
-                    $description = str_replace('  ', '', $matchesDescription[1]);
-                }
+        $eventTypes = explode(',', $this->getConfigData("sro_event_type_last"));
 
-                $found = true;
-            } elseif (preg_match(
-                '/<td rowspan="?1"?>(.*)<\/td><td>(.*)<\/td><td><font color="[A-Z0-9]{6}">(.*)<\/font><\/td>/i',
-                $column,
-                $matches
-            )
-            ) {
-                $found = true;
+        if (count($request->return->objeto->evento) == 1) {
+            $progress[] = $this->_getTrackingProgressDetails($request->return->objeto->evento);
+        } else {
+            foreach ($request->return->objeto->evento as $evento) {
+                $progress[] = $this->_getTrackingProgressDetails($evento);
+                $isDelivered = ((int) $evento->status < 2 && in_array($evento->tipo, $eventTypes));
+                if ($isDelivered) {
+                    $track = $this->_getTrackingProgressDetails($evento, $isDelivered);
+                }
             }
+        }
 
-            if ($found) {
-                $datetime = explode(' ', $matches[1]);
-                $locale   = new Zend_Locale('pt_BR');
-                $date     = '';
-                $date     = new Zend_Date($datetime[0], 'dd/MM/YYYY', $locale);
-
-                $track = array(
-                    'deliverydate'     => $date->toString('YYYY-MM-dd'),
-                    'deliverytime'     => $datetime[1] . ':00',
-                    'deliverylocation' => htmlentities($matches[2], ENT_IGNORE, 'ISO-8859-1'),
-                    'status'           => htmlentities($matches[3], ENT_IGNORE, 'ISO-8859-1'),
-                    'activity'         => htmlentities($matches[3], ENT_IGNORE, 'ISO-8859-1')
-                );
-
-                if ($description !== '') {
-                    $track['activity'] = $matches[3] . ' - ' . htmlentities($description, ENT_IGNORE, 'ISO-8859-1');
-                }
+        $progress[] = $track;
+        return $progress;
+    }
 
-                $progress[] = $track;
-            }
+    /**
+     * Protected Get Tracking, opens the request to Correios
+     *
+     * @param string $code Code
+     *
+     * @return bool
+     */
+    protected function _getTracking($code)
+    {
+        $error = Mage::getModel('shipping/tracking_result_error');
+        $error->setTracking($code);
+        $error->setCarrier($this->_code);
+        $error->setCarrierTitle($this->getConfigData('title'));
+        $error->setErrorMessage($this->getConfigData('urlerror'));
+        
+        $request = $this->_getTrackingRequest($code);
+        if (!isset($request->return)) {
+            $this->_result->append($error);
+            return false;
         }
 
+        $progress = $this->_getTrackingProgress($request);
         if (!empty($progress)) {
-            $track                   = $progress[0];
+            $track = array_pop($progress);
             $track['progressdetail'] = $progress;
 
             $tracking = Mage::getModel('shipping/tracking_result_status');
diff --git a/app/code/community/PedroTeixeira/Correios/Model/Sro.php b/app/code/community/PedroTeixeira/Correios/Model/Sro.php
index 336b418..cd68a81 100644
--- a/app/code/community/PedroTeixeira/Correios/Model/Sro.php
+++ b/app/code/community/PedroTeixeira/Correios/Model/Sro.php
@@ -48,38 +48,37 @@ public function getShippedTracks()
     /**
      * Load XML response from Correios
      * 
-     * @param string $number Tracking Code
+     * @param string $trackingCode Tracking Code
      * 
-     * @throws Zend_Http_Client_Adapter_Exception
+     * @throws Exception
      * 
      * @link http://www.correios.com.br/para-voce/correios-de-a-a-z/pdf/rastreamento-de-objetos/
      * Manual_SROXML_28fev14.pdf
+     * @link http://www.corporativo.correios.com.br/encomendas/sigepweb/doc/
+     * Manual_de_Implementacao_do_Web_Service_SIGEPWEB_Logistica_Reversa.pdf
      * 
-     * @return SimpleXMLElement
+     * @return boolean|PedroTeixeira_Correios_Model_Sro
      */
-    public function request($number)
+    public function request($trackingCode)
     {
-        $client = new Zend_Http_Client($this->getConfigData("url_sro_correios"));
-        $client->setParameterPost('Usuario', $this->getConfigData('sro_username'));
-        $client->setParameterPost('Senha', $this->getConfigData('sro_password'));
-        $client->setParameterPost('Tipo', $this->getConfigData('sro_type'));
-        $client->setParameterPost('Resultado', $this->getConfigData('sro_result'));
-        $client->setParameterPost('Objetos', $number);
+        $params = array(
+            'usuario'   => $this->getConfigData('sro_username'),
+            'senha'     => $this->getConfigData('sro_password'),
+            'tipo'      => $this->getConfigData('sro_type'),
+            'resultado' => $this->getConfigData('sro_result'),
+            'lingua'    => $this->getConfigData('sro_language'),
+            'objetos'   => $trackingCode,
+        );
+        
         try {
-            $response = $client->request(Zend_Http_Client::POST)->getBody();
+            $client = new SoapClient($this->getConfigData('url_sro_correios'));
+            $response = $client->buscaEventos($params);
             if (empty($response)) {
-                throw new Zend_Http_Client_Adapter_Exception("Empty response");
-            }
-            libxml_use_internal_errors(true);
-            $this->_xml = simplexml_load_string($response);
-            if (!$this->_xml || !isset($this->_xml->objeto)) {
-                throw new Zend_Http_Client_Adapter_Exception("Invalid XML");
+                throw new Exception("Empty response");
             }
-        } catch (Zend_Http_Exception $e) {
-            Mage::log("{$e->getMessage()}");
-            Mage::log("TRACKING: {$number}");
-            Mage::log("RESPONSE: {$response}");
-            return false;
+            $this->_xml = $response->return;
+        } catch (Exception $e) {
+            Mage::log("Soap Error: {$e->getMessage()}");
         }
         return $this;
     }
diff --git a/app/code/community/PedroTeixeira/Correios/etc/config.xml b/app/code/community/PedroTeixeira/Correios/etc/config.xml
index c977cbc..52e86f7 100644
--- a/app/code/community/PedroTeixeira/Correios/etc/config.xml
+++ b/app/code/community/PedroTeixeira/Correios/etc/config.xml
@@ -421,7 +421,8 @@
                 <sro_password>SRO</sro_password>
                 <sro_type>L</sro_type>
                 <sro_result>U</sro_result>
-
+                <sro_language>101</sro_language>
+                
                 <sro_event_type_notify>BDE,BDI,BDR,FC,LDI,OEC</sro_event_type_notify>
                 <sro_event_status_notify_bde>0,1,2,7,20,24,25,34,45,54,55</sro_event_status_notify_bde>
                 <sro_event_status_notify_bdi>0,1,2,7,20,24,25,34,45,54,55</sro_event_status_notify_bdi>
@@ -443,8 +444,8 @@
                 <sro_event_status_last_bde>0,1</sro_event_status_last_bde>
                 <sro_event_status_last_bdi>0,1</sro_event_status_last_bdi>
                 <sro_event_status_last_bdr>0,1</sro_event_status_last_bdr>
-
-                <url_sro_correios>http://websro.correios.com.br/sro_bin/sroii_xml.eventos</url_sro_correios>
+                
+                <url_sro_correios>http://webservice.correios.com.br/service/rastro/Rastro.wsdl</url_sro_correios>
                 <url_tracking>http://websro.correios.com.br/sro_bin/txect01$.QueryList</url_tracking>
 
                 <!-- CACHE -->