diff --git a/composer.json b/composer.json
index a076b0c..858e76a 100644
--- a/composer.json
+++ b/composer.json
@@ -17,6 +17,7 @@
     ],
     "require": {
         "php": "~7.2",
+        "guzzlehttp/guzzle": "^6.3",
         "rappasoft/laravel-helpers": "^1.0"
     },
     "require-dev": {
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 38e9e97..e670b3b 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -21,7 +21,7 @@
     </filter>
     <logging>
         <log type="junit" target="build/report.junit.xml"/>
-        <log type="coverage-html" target="build/coverage" charset="UTF-8" yui="true" highlight="true"/>
+        <log type="coverage-html" target="build/coverage"/>
         <log type="coverage-text" target="build/coverage.txt"/>
         <log type="coverage-clover" target="build/logs/clover.xml"/>
     </logging>
diff --git a/src/MatrixHttpApi.php b/src/MatrixHttpApi.php
index 87a112a..7e46800 100644
--- a/src/MatrixHttpApi.php
+++ b/src/MatrixHttpApi.php
@@ -6,7 +6,6 @@ use Aryess\PhpMatrixSdk\Exceptions\MatrixException;
 use Aryess\PhpMatrixSdk\Exceptions\MatrixHttpLibException;
 use Aryess\PhpMatrixSdk\Exceptions\MatrixRequestException;
 use GuzzleHttp\Client;
-use GuzzleHttp\Exception\RequestException;
 
 /**
  * Contains all raw Matrix HTTP Client-Server API calls.
@@ -93,7 +92,10 @@ class MatrixHttpApi {
         $this->client = new Client();
         $this->default429WaitMs = $default429WaitMs;
         $this->useAuthorizationHeader = $useAuthorizationHeader;
+    }
 
+    public function setClient(Client $client) {
+        $this->client = $client;
     }
 
     /**