diff --git a/examples/change-user-agent.php b/examples/change-user-agent.php
new file mode 100644
index 00000000..9c7b9778
--- /dev/null
+++ b/examples/change-user-agent.php
@@ -0,0 +1,36 @@
+<?php
+
+require __DIR__.DIRECTORY_SEPARATOR.'bootstrap.php';
+
+use GuzzleHttp\HandlerStack;
+use GuzzleHttp\Middleware;
+use GuzzleHttp\MessageFormatter;
+use Monolog\Logger;
+
+$logger = new Logger('Logger');
+$stack = HandlerStack::create();
+$stack->push(
+    Middleware::log(
+        $logger,
+        new MessageFormatter('{request}')
+    )
+);
+
+$client = new \FeedIo\Adapter\Guzzle\Client(
+    new GuzzleHttp\Client([
+        'handler' => $stack
+        ]),
+    'Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2228.0 Safari/537.36'
+);
+
+$feedIo = new \FeedIo\FeedIo($client, $logger);
+
+$result = $feedIo->read('http://php.net/feed.atom');
+
+echo "feed title : {$result->getFeed()->getTitle()} \n ";
+
+$client->setUserAgent('Another User Agent');
+
+$feedIo->read('http://php.net/feed.atom');
+
+echo "feed title : {$result->getFeed()->getTitle()} \n ";
diff --git a/src/FeedIo/Adapter/Guzzle/Client.php b/src/FeedIo/Adapter/Guzzle/Client.php
index 66967453..2cab80a9 100644
--- a/src/FeedIo/Adapter/Guzzle/Client.php
+++ b/src/FeedIo/Adapter/Guzzle/Client.php
@@ -24,17 +24,41 @@
  */
 class Client implements ClientInterface
 {
+
+    /**
+     * Default user agent provided with the package
+     */
+    const DEFAULT_USER_AGENT = 'Mozilla/5.0 (X11; U; Linux i686; fr; rv:1.9.1.1) Gecko/20090715 Firefox/3.5.1';
+
     /**
      * @var \GuzzleHttp\ClientInterface
      */
     protected $guzzleClient;
 
+    /**
+     * @var string
+     */
+    protected $userAgent;
+
     /**
      * @param \GuzzleHttp\ClientInterface $guzzleClient
+     * @param string $userAgent
      */
-    public function __construct(\GuzzleHttp\ClientInterface $guzzleClient)
+    public function __construct(\GuzzleHttp\ClientInterface $guzzleClient, string $userAgent = self::DEFAULT_USER_AGENT)
     {
         $this->guzzleClient = $guzzleClient;
+        $this->userAgent = $userAgent;
+    }
+
+    /**
+     * @param  string $userAgent The new user-agent
+     * @return Client
+     */
+    public function setUserAgent(string $userAgent) : Client
+    {
+        $this->userAgent = $userAgent;
+
+        return $this;
     }
 
     /**
@@ -113,7 +137,7 @@ protected function getOptions(\DateTime $modifiedSince) : array
     {
         return [
             'headers' => [
-                'User-Agent' => 'Mozilla/5.0 (X11; U; Linux i686; fr; rv:1.9.1.1) Gecko/20090715 Firefox/3.5.1',
+                'User-Agent' => $this->userAgent,
                 'If-Modified-Since' => $modifiedSince->format(\DateTime::RFC2822)
             ]
         ];
diff --git a/tests/FeedIo/Adapter/Guzzle/ClientTest.php b/tests/FeedIo/Adapter/Guzzle/ClientTest.php
index e81efb53..05c49d6d 100644
--- a/tests/FeedIo/Adapter/Guzzle/ClientTest.php
+++ b/tests/FeedIo/Adapter/Guzzle/ClientTest.php
@@ -43,6 +43,13 @@ public function testGetResponse()
         $this->assertEquals(1994, $response->getLastModified()->format('Y'));
     }
 
+    public function testSetUserAgent()
+    {
+        $this->object->setUserAgent('the new user-agent');
+
+        $this->assertAttributeEquals('the new user-agent', 'userAgent', $this->object);
+    }
+
     /**
      * @expectedException \FeedIo\Adapter\NotFoundException
      */
diff --git a/tests/FeedIo/FeedIoTest.php b/tests/FeedIo/FeedIoTest.php
index 7b2bbfd8..88bd8778 100644
--- a/tests/FeedIo/FeedIoTest.php
+++ b/tests/FeedIo/FeedIoTest.php
@@ -139,8 +139,7 @@ public function testSetReader()
         $logger = new \Psr\Log\NullLogger();
         $reader = new Reader(
             new Adapter\Guzzle\Client(
-                new \GuzzleHttp\Client(),
-                $logger
+                new \GuzzleHttp\Client()
             ),
             $logger
         );