diff --git a/src/Lib/Configuration.php b/src/Lib/Configuration.php
index 96a282ac..e0767ca2 100644
--- a/src/Lib/Configuration.php
+++ b/src/Lib/Configuration.php
@@ -235,7 +235,7 @@ public function getLogger(): LoggerInterface
     /**
      * @return ClientInterface | HttpMethodsClient
      */
-    public function getClient(): ClientInterface | HttpMethodsClient
+    public function getClient()
     {
         if ($this->client === null) {
             $discoveredClient = Psr18ClientDiscovery::find();