diff --git a/src/BusProNet/ApiClient.php b/src/BusProNet/ApiClient.php
index 27e5f02..aff726f 100644
--- a/src/BusProNet/ApiClient.php
+++ b/src/BusProNet/ApiClient.php
@@ -34,7 +34,7 @@ class ApiClient
     /**
      * @throws ApiClientException
      */
-    public function getProfile(string $email, string $password): ProfileResponse
+    public function getProfile(string $email, string $password): NotificationResponse|ProfileResponse
     {
         $data = [
             'anfrage' => [
@@ -53,7 +53,7 @@ class ApiClient
     /**
      * @throws ApiClientException
      */
-    public function updateProfile(User $user, string $password): ProfileResponse
+    public function updateProfile(User $user, string $password): NotificationResponse|ProfileResponse
     {
         if (null === $teamer = $user->getTeamer()) {
             throw new ApiClientException('Invalid argument');
@@ -96,7 +96,7 @@ class ApiClient
     /**
      * @throws ApiClientException
      */
-    public function getCrmAttributes(string $email, string $password): CrmAttributesResponse
+    public function getCrmAttributes(string $email, string $password): NotificationResponse|CrmAttributesResponse
     {
         $data = [
             'anfrage' => [
@@ -115,7 +115,7 @@ class ApiClient
     /**
      * @throws ApiClientException
      */
-    public function getBaseData(string $type): BaseDataResponse
+    public function getBaseData(string $type): NotificationResponse|BaseDataResponse
     {
         $data = [
             'anfrage' => [