diff --git a/src/Connectors/DocuWareConnector.php b/src/Connectors/DocuWareConnector.php
index ddc2e4a..aad9456 100644
--- a/src/Connectors/DocuWareConnector.php
+++ b/src/Connectors/DocuWareConnector.php
@@ -89,7 +89,7 @@ protected function getOrCreateNewOAuthToken()
 
     protected function getAuthenticationTokenEndpoint(): IdentityServiceConfiguration
     {
-        $responsibleIdentityServiceResponse = (new GetResponsibleIdentityService)->send();
+        $responsibleIdentityServiceResponse = (new GetResponsibleIdentityService($this->configuration->url))->send();
 
         $identityServiceConfigurationResponse = (new GetIdentityServiceConfiguration(
             identityServiceUrl: $responsibleIdentityServiceResponse->dto()->identityServiceUrl
diff --git a/src/Requests/Authentication/OAuth/GetResponsibleIdentityService.php b/src/Requests/Authentication/OAuth/GetResponsibleIdentityService.php
index 08aad97..1de4f07 100644
--- a/src/Requests/Authentication/OAuth/GetResponsibleIdentityService.php
+++ b/src/Requests/Authentication/OAuth/GetResponsibleIdentityService.php
@@ -18,6 +18,10 @@ class GetResponsibleIdentityService extends SoloRequest implements Cacheable
 
     protected Method $method = Method::GET;
 
+    public function __construct(
+        protected null|string $url = null
+    ) {}
+
     public function resolveEndpoint(): string
     {
         $base = config('laravel-docuware.credentials.url').'/DocuWare/Platform';