diff --git a/Google/AuthorizationGA4.php b/Google/AuthorizationGA4.php
index c66d52df..fb2e4948 100644
--- a/Google/AuthorizationGA4.php
+++ b/Google/AuthorizationGA4.php
@@ -48,7 +48,7 @@ protected function getClientClassArguments(): array
         $proxyHttpClient = StaticContainer::get('GoogleAnalyticsImporter.proxyHttpClient');
         if ($proxyHttpClient) {
             $proxyHttpHandler = \Matomo\Dependencies\GoogleAnalyticsImporter\Google\Auth\HttpHandler\HttpHandlerFactory::build($proxyHttpClient);
-            $arguments['credentialsConfig'] = ['authHttpHandler' => $proxyHttpHandler];
+            $arguments['credentialsConfig'] = ['authHttpHandler' => $proxyHttpHandler, 'keyFile' => $arguments['keyFile']];
             $arguments['transport'] = 'rest';
             $arguments['transportConfig'] = ['rest' => ['httpHandler' => $proxyHttpHandler]];