diff --git a/src/Kontent/Ai/Delivery/DeliveryClient.php b/src/Kontent/Ai/Delivery/DeliveryClient.php
index 0654c70..a7d6c8a 100644
--- a/src/Kontent/Ai/Delivery/DeliveryClient.php
+++ b/src/Kontent/Ai/Delivery/DeliveryClient.php
@@ -222,7 +222,7 @@ public function getType($codename)
      *
      * @param $params queryParams Specification of parameters for Taxonomy retrieval
      *
-     * @return array of retrieved Taxonomies
+     * @return object with array of retrieved Taxonomies
      */
     public function getTaxonomies($params)
     {
diff --git a/tests/E2E/ContentTypeFactoryTest.php b/tests/E2E/ContentTypeFactoryTest.php
index 59a696b..6269e0e 100644
--- a/tests/E2E/ContentTypeFactoryTest.php
+++ b/tests/E2E/ContentTypeFactoryTest.php
@@ -22,7 +22,7 @@ public function testGetElement()
     {
         $client = $this->getClient();
         $actual = $client->getElement('coffee', 'processing');
-
+        
         $this->assertEquals('Processing', $actual->name);
     }
 
diff --git a/tests/E2E/DeliveryClientTest.php b/tests/E2E/DeliveryClientTest.php
index 14cf096..987fcf5 100644
--- a/tests/E2E/DeliveryClientTest.php
+++ b/tests/E2E/DeliveryClientTest.php
@@ -195,13 +195,6 @@ public function testGetItemPreviewApiEmpty()
         $this->assertNull($item);
     }
 
-    public function testGetPreviewApiPresent()
-    {
-        $client = new DeliveryClient($this->getProjectId(), 'ew0KICAiYWxnIjogIkhTMjU2IiwNCiAgInR5cCI6ICJKV1QiDQp9.ew0KICAidWlkIjogInVzcl8wdk4xUTA1bks2YmlyQVQ2TU5wdkkwIiwNCiAgImVtYWlsIjogInBldHIuc3ZpaGxpa0BrZW50aWNvLmNvbSIsDQogICJwcm9qZWN0X2lkIjogIjk3NWJmMjgwLWZkOTEtNDg4Yy05OTRjLTJmMDQ0MTZlNWVlMyIsDQogICJqdGkiOiAibzhUdkc0OHFqX0ZUSWplVCIsDQogICJ2ZXIiOiAiMS4wLjAiLA0KICAiZ2l2ZW5fbmFtZSI6ICJQZXRyIiwNCiAgImZhbWlseV9uYW1lIjogIlN2aWhsaWsiLA0KICAiYXVkIjogInByZXZpZXcuZGVsaXZlci5rZW50aWNvY2xvdWQuY29tIg0KfQ.wd7_nOYInsdsoh9-0R43FnDQuVk_azPaYze7Ghxv43I');
-        $item = $client->getItem('amsterdam');
-        $this->assertEquals('e844a6aa-4dc4-464f-8ae9-f9f66cc6ab61', $item->system->id);
-    }
-
     public function testGetContentItems()
     {
         $params = (new QueryParams())->type('article')->depth(2)->elements(array('personas'));
diff --git a/tests/E2E/TaxonomyFactoryTest.php b/tests/E2E/TaxonomyFactoryTest.php
index 2b8c662..39b5048 100644
--- a/tests/E2E/TaxonomyFactoryTest.php
+++ b/tests/E2E/TaxonomyFactoryTest.php
@@ -37,7 +37,7 @@ public function testCreateTaxonomies_SingleItemStructure_Matches()
             "4ce421e9-c403-eee8-fdc2-74f09392a749",
             "Manufacturer",
             "manufacturer",
-            "2017-09-07T08:15:22.7210000Z"
+            "2023-03-09T16:16:19.6167230Z"
         );
 
         $term1 = new Taxonomies\Term();
@@ -112,7 +112,7 @@ public function testCreateTaxonomy_SingleTaxonomyResponse_NestedTaxonomyStructur
             "4ce421e9-c403-eee8-fdc2-74f09392a749",
             "Manufacturer",
             "manufacturer",
-            "2017-09-07T08:15:22.7210000Z"
+            "2023-03-09T16:16:19.6167230Z"
         );
 
         $term1 = new Taxonomies\Term();
diff --git a/tests/Unit/DeliveryClientTest.php b/tests/Unit/DeliveryClientTest.php
index 08c76d2..adfb685 100644
--- a/tests/Unit/DeliveryClientTest.php
+++ b/tests/Unit/DeliveryClientTest.php
@@ -28,6 +28,7 @@ public function test_ctor_previewKeyIsSetInHeaders()
         $previewKey = 'previewKey';
         $client = new DeliveryClient($this->getProjectId(), 'previewKey');
         $authorizationHeaderValue = Request::d('headers')['Authorization'];
+        $x = Request::d(null);
 
         $this->assertEquals('Bearer '.$previewKey, $authorizationHeaderValue);
     }