diff --git a/Classes/Service/Rest.php b/Classes/Service/Rest.php
index 9ef34f5..704a947 100644
--- a/Classes/Service/Rest.php
+++ b/Classes/Service/Rest.php
@@ -12,7 +12,7 @@
 
 use Brotkrueml\JobRouterClient\Client\RestClient;
 use Brotkrueml\JobRouterClient\Configuration\ClientConfiguration;
-use Brotkrueml\JobRouterClient\Exception\RestException;
+use Brotkrueml\JobRouterClient\Exception\RestClientException;
 use Brotkrueml\JobRouterConnector\Domain\Model\Connection;
 
 class Rest
@@ -45,8 +45,8 @@ public function getRestClient(Connection $connection, ?int $lifetime = null): Re
      * Check the connectivity for the given connection
      *
      * @param Connection $connection The connection model
-     * @return bool
-     * @throws RestException
+     * @return bool true, if connection can be established successfully
+     * @throws RestClientException
      */
     public function checkConnection(Connection $connection): bool
     {
diff --git a/composer.json b/composer.json
index 830855e..66b4ff7 100644
--- a/composer.json
+++ b/composer.json
@@ -13,7 +13,7 @@
         "php": "^7.2",
         "ext-json": "*",
         "ext-sodium": "*",
-        "brotkrueml/jobrouter-client": "^0.3",
+        "brotkrueml/jobrouter-client": "^0.4",
         "typo3/cms-backend": "^9.5",
         "typo3/cms-core": "^9.5",
         "typo3/cms-extbase": "^9.5",