diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8c9afc7..550fd76 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## 1.7 (2014-1-30)
+
+Bugfixes:
+  - patched bug for attachments related to duplicate aggregator bug in Guzzle (#32 @travelton)
+
 ## 1.6 (2014-1-13)
 
 Enhancement:
diff --git a/README.md b/README.md
index 77d5338..3faa2f7 100644
--- a/README.md
+++ b/README.md
@@ -22,11 +22,13 @@ composer and the Mailgun SDK.
 curl -sS https://getcomposer.org/installer | php
 
 # Add Mailgun as a dependency
-php composer.phar require mailgun/mailgun-php:~1.6
+php composer.phar require mailgun/mailgun-php:~1.7
 ``` 
 
 **For shared hosts without SSH access, check out our [Shared Host Instructions](SharedHostInstall.md).**
 
+**Rather just download the files? [Library Download](https://9f67cbbd1116d8afb399-7760483f5d1e5f28c2d253278a2a5045.ssl.cf2.rackcdn.com/mailgun-php-1.7.zip).**
+
 Next, require Composer's autoloader, in your application, to automatically 
 load the Mailgun SDK in your project:
 ```PHP
diff --git a/SharedHostInstall.md b/SharedHostInstall.md
index c4d0b02..c6b4b8c 100644
--- a/SharedHostInstall.md
+++ b/SharedHostInstall.md
@@ -11,7 +11,7 @@ Linux / Mac OSX:
 *PHP is typically installed by default, consult your distribution documentation. Instructions from [getcomposer.org](http://getcomposer.org/doc/00-intro.md#installation-nix).*  
 
 1. curl -sS https://getcomposer.org/installer | php  
-2. php composer.phar require mailgun/mailgun-php:~1.6  
+2. php composer.phar require mailgun/mailgun-php:~1.7  
 3. The files will be downloaded to your local computer.   
 4. Upload the files to your webserver.   
 
@@ -20,7 +20,7 @@ Windows:
 *PHP must be installed on your computer, [download](http://windows.php.net/download/0). Instructions from [getcomposer.org](http://getcomposer.org/doc/00-intro.md#installation-windows).* 
 
 1. Download and run [Composer-Setup.exe](https://getcomposer.org/Composer-Setup.exe).  
-2. Open a Command Prompt and type "php composer require mailgun/mailgun-php:~1.6".  
+2. Open a Command Prompt and type "php composer require mailgun/mailgun-php:~1.7".  
 3. The files will be downloaded to your local computer.   
 4. Upload the files to your webserver.   
 
diff --git a/src/Mailgun/Connection/RestClient.php b/src/Mailgun/Connection/RestClient.php
index d32a92e..88bd574 100644
--- a/src/Mailgun/Connection/RestClient.php
+++ b/src/Mailgun/Connection/RestClient.php
@@ -7,6 +7,7 @@ use Mailgun\MailgunClient;
 
 use Mailgun\Connection\Exceptions\GenericHTTPError;
 use Guzzle\Http\QueryAggregator\DuplicateAggregator;
+use Guzzle\Http\QueryAggregator\PhpAggregator;
 use Mailgun\Connection\Exceptions\InvalidCredentials;
 use Mailgun\Connection\Exceptions\NoDomainsConfigured;
 use Mailgun\Connection\Exceptions\MissingRequiredParameters;
@@ -20,6 +21,7 @@ class RestClient{
 
 	private $apiKey;
 	protected $mgClient;
+	protected $hasFiles = False;
 	
 	public function __construct($apiKey, $apiEndpoint, $apiVersion, $ssl){
 		$this->apiKey = $apiKey;
@@ -34,11 +36,14 @@ class RestClient{
 		$request = $this->mgClient->post($endpointUrl, array(), $postData);
 		
 		if(isset($files["message"])){
+			$this->hasFiles = True;
 			foreach($files as $message){
 				$request->addPostFile("message", $message);
 			}
 		}
+
 		if(isset($files["attachment"])){
+			$this->hasFiles = True;
 			foreach($files["attachment"] as $attachment){
 				// Backward compatibility code
 				if (is_array($attachment)){
@@ -51,7 +56,9 @@ class RestClient{
 				}
 			}
 		}
+
 		if(isset($files["inline"])){
+			$this->hasFiles = True;
 			foreach($files["inline"] as $inline){
 				// Backward compatibility code
 				if (is_array($inline)){
@@ -65,7 +72,20 @@ class RestClient{
 			}
 		}
 		
-		$request->getPostFields()->setAggregator(new DuplicateAggregator());
+		/*
+			This block of code is to accommodate for a bug in Guzzle. 
+			See https://github.com/guzzle/guzzle/issues/545.
+			It can be removed when Guzzle resolves the issue.
+		*/
+
+		if($this->hasFiles){
+			$request->getPostFields()->setAggregator(new PhpAggregator());	
+		}
+
+		else{
+			$request->getPostFields()->setAggregator(new DuplicateAggregator());
+		}
+		
 		$response = $request->send();
 		return $this->responseHandler($response);
 	}
diff --git a/src/Mailgun/Constants/Constants.php b/src/Mailgun/Constants/Constants.php
index d18fce7..0f0a053 100644
--- a/src/Mailgun/Constants/Constants.php
+++ b/src/Mailgun/Constants/Constants.php
@@ -1,7 +1,7 @@
 <?PHP
 
 const API_USER = "api";
-const SDK_VERSION = "1.11";
+const SDK_VERSION = "1.7";
 const SDK_USER_AGENT = "mailgun-sdk-php";
 const RECIPIENT_COUNT_LIMIT = 1000;
 const CAMPAIGN_ID_LIMIT = 3;