diff --git a/src/MastodonAPI.php b/src/MastodonAPI.php
index fdf2287..1893f76 100755
--- a/src/MastodonAPI.php
+++ b/src/MastodonAPI.php
@@ -53,7 +53,7 @@ public function __construct(
     private function getResponse(string $endpoint, string $method, array $json, bool $authenticate = true): mixed
     {
         $uri = $this->config->getBaseUrl() . '/api/';
-        $uri .= ConfigurationVO::API_VERSION . $endpoint;
+        $uri .= $this->config->apiVersion . $endpoint;
 
         $allowedMethods = array_column(HttpOperation::cases(), 'name');
         if (!in_array($method, $allowedMethods)) {
diff --git a/src/MastodonOAuth.php b/src/MastodonOAuth.php
index ada7f3c..d556270 100644
--- a/src/MastodonOAuth.php
+++ b/src/MastodonOAuth.php
@@ -22,10 +22,12 @@ class MastodonOAuth
      * Creates the OAuth object from the configuration.
      */
     public function __construct(
-        $client_name = ConfigurationVO::DEFAULT_NAME,
-        $mastodon_instance = ConfigurationVO::DEFAULT_INSTANCE
+        string $client_name = ConfigurationVO::DEFAULT_NAME,
+        string $mastodon_instance = ConfigurationVO::DEFAULT_INSTANCE,
+        string $redirectUris = ConfigurationVO::DEFAULT_REDIRECT_URIS,
+        string $api_version = ConfigurationVO::API_VERSION
     ) {
-        $this->config = new ConfigurationVO($client_name, $mastodon_instance);
+        $this->config = new ConfigurationVO($client_name, $mastodon_instance, $redirectUris, $api_version);
         $this->client = new Client();
     }