diff --git a/composer.json b/composer.json
index 5b42605..b6799f6 100644
--- a/composer.json
+++ b/composer.json
@@ -15,7 +15,8 @@
     ],
     "require": {
       "php": ">=7.4",
-      "swisnl/json-api-client": "1.3.2",
+      "swisnl/json-api-client": "^2.2.0",
+      "illuminate/support": "*",
       "guzzlehttp/guzzle": "^7.0",
       "phpseclib/phpseclib": "^3.0.7",
       "ext-openssl": "*",
@@ -43,5 +44,10 @@
       "test": "XDEBUG_MODE=coverage phpunit",
       "check-style": "php-cs-fixer fix --dry-run -v",
       "fix-style": "php-cs-fixer fix"
+    },
+    "config": {
+        "allow-plugins": {
+            "php-http/discovery": true
+        }
     }
 }
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 0fc0aba..f84beac 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -1,22 +1,17 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<phpunit colors="true"
-  bootstrap="tests/bootstrap.php"
-  convertErrorsToExceptions="true"
-  convertNoticesToExceptions="true"
-  convertWarningsToExceptions="true"
-  processIsolation="false"
-  stopOnFailure="false">
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" colors="true" bootstrap="tests/bootstrap.php" convertErrorsToExceptions="true" convertNoticesToExceptions="true" convertWarningsToExceptions="true" processIsolation="false" stopOnFailure="false" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd">
+  <coverage processUncoveredFiles="true">
+    <include>
+      <directory suffix=".php">./src</directory>
+    </include>
+    <report>
+      <clover outputFile="build/logs/clover.xml"/>
+    </report>
+  </coverage>
   <testsuites>
     <testsuite name="tests">
       <directory suffix="Test.php">./tests</directory>
     </testsuite>
   </testsuites>
-  <filter>
-    <whitelist processUncoveredFilesFromWhitelist="true">
-      <directory suffix=".php">./src</directory>
-    </whitelist>
-  </filter>
-  <logging>
-    <log type="coverage-clover" target="build/logs/clover.xml"/>
-  </logging>
+  <logging/>
 </phpunit>
diff --git a/src/Item/Did.php b/src/Item/Did.php
index c766f11..93e2f0e 100644
--- a/src/Item/Did.php
+++ b/src/Item/Did.php
@@ -34,7 +34,7 @@ public function setDescription(string $desc)
         $this->attributes['description'] = $desc;
     }
 
-    public function getDescription(): string
+    public function getDescription(): ?string
     {
         return $this->attributes['description'];
     }
diff --git a/tests/DidTest.php b/tests/DidTest.php
index 19a2e53..c28742b 100644
--- a/tests/DidTest.php
+++ b/tests/DidTest.php
@@ -136,6 +136,7 @@ public function testBooleans()
 
         $did->setBillingCyclesCount(0);
         $did->setTerminated(true);
+        $did->setDescription('something');
         $didDocument = $did->save();
 
         $this->assertEquals($did->toJsonApiArray(), [
diff --git a/tests/fixtures/dids.yml b/tests/fixtures/dids.yml
index 2eec07e..533c8b8 100644
--- a/tests/fixtures/dids.yml
+++ b/tests/fixtures/dids.yml
@@ -268,7 +268,7 @@
             Access-Control-Allow-Headers: 'Origin, X-Requested-With, Content-Type, Accept, x-api-key, api-key, x-api-token, Cache-Control'
             Access-Control-Allow-Methods: 'GET, POST, DELETE, PUT, PATCH, OPTIONS'
             Access-Control-Allow-Credentials: 'true'
-        body: '{"data":{"id":"9df99644-f1a5-4a3c-99a4-559d758eb96b","type":"dids","attributes":{"blocked":false,"capacity_limit":2,"description":"something","terminated":false,"awaiting_registration":false,"created_at":"2018-12-27T09:59:55.015Z","number":"16091609123456797","expires_at":"2019-11-27T10:00:04.755Z","channels_included_count":0,"billing_cycles_count":null,"dedicated_channels_count":0},"relationships":{"did_group":{"links":{"self":"https://sandbox-api.didww.com/v3/dids/9df99644-f1a5-4a3c-99a4-559d758eb96b/relationships/did_group","related":"https://sandbox-api.didww.com/v3/dids/9df99644-f1a5-4a3c-99a4-559d758eb96b/did_group"}},"order":{"links":{"self":"https://sandbox-api.didww.com/v3/dids/9df99644-f1a5-4a3c-99a4-559d758eb96b/relationships/order","related":"https://sandbox-api.didww.com/v3/dids/9df99644-f1a5-4a3c-99a4-559d758eb96b/order"}},"voice_in_trunk":{"links":{"self":"https://sandbox-api.didww.com/v3/dids/9df99644-f1a5-4a3c-99a4-559d758eb96b/relationships/voice_in_trunk","related":"https://sandbox-api.didww.com/v3/dids/9df99644-f1a5-4a3c-99a4-559d758eb96b/voice_in_trunk"}},"voice_in_trunk_group":{"links":{"self":"https://sandbox-api.didww.com/v3/dids/9df99644-f1a5-4a3c-99a4-559d758eb96b/relationships/voice_in_trunk_group","related":"https://sandbox-api.didww.com/v3/dids/9df99644-f1a5-4a3c-99a4-559d758eb96b/voice_in_trunk_group"}},"capacity_pool":{"links":{"self":"https://sandbox-api.didww.com/v3/dids/9df99644-f1a5-4a3c-99a4-559d758eb96b/relationships/capacity_pool","related":"https://sandbox-api.didww.com/v3/dids/9df99644-f1a5-4a3c-99a4-559d758eb96b/capacity_pool"}},"shared_capacity_group":{"links":{"self":"https://sandbox-api.didww.com/v3/dids/9df99644-f1a5-4a3c-99a4-559d758eb96b/relationships/shared_capacity_group","related":"https://sandbox-api.didww.com/v3/dids/9df99644-f1a5-4a3c-99a4-559d758eb96b/shared_capacity_group"}}}}}'
+        body: '{"data":{"id":"9df99644-f1a5-4a3c-99a4-559d758eb96b","type":"dids","attributes":{"blocked":false,"capacity_limit":2,"description":null,"terminated":false,"awaiting_registration":false,"created_at":"2018-12-27T09:59:55.015Z","number":"16091609123456797","expires_at":"2019-11-27T10:00:04.755Z","channels_included_count":0,"billing_cycles_count":null,"dedicated_channels_count":0},"relationships":{"did_group":{"links":{"self":"https://sandbox-api.didww.com/v3/dids/9df99644-f1a5-4a3c-99a4-559d758eb96b/relationships/did_group","related":"https://sandbox-api.didww.com/v3/dids/9df99644-f1a5-4a3c-99a4-559d758eb96b/did_group"}},"order":{"links":{"self":"https://sandbox-api.didww.com/v3/dids/9df99644-f1a5-4a3c-99a4-559d758eb96b/relationships/order","related":"https://sandbox-api.didww.com/v3/dids/9df99644-f1a5-4a3c-99a4-559d758eb96b/order"}},"voice_in_trunk":{"links":{"self":"https://sandbox-api.didww.com/v3/dids/9df99644-f1a5-4a3c-99a4-559d758eb96b/relationships/voice_in_trunk","related":"https://sandbox-api.didww.com/v3/dids/9df99644-f1a5-4a3c-99a4-559d758eb96b/voice_in_trunk"}},"voice_in_trunk_group":{"links":{"self":"https://sandbox-api.didww.com/v3/dids/9df99644-f1a5-4a3c-99a4-559d758eb96b/relationships/voice_in_trunk_group","related":"https://sandbox-api.didww.com/v3/dids/9df99644-f1a5-4a3c-99a4-559d758eb96b/voice_in_trunk_group"}},"capacity_pool":{"links":{"self":"https://sandbox-api.didww.com/v3/dids/9df99644-f1a5-4a3c-99a4-559d758eb96b/relationships/capacity_pool","related":"https://sandbox-api.didww.com/v3/dids/9df99644-f1a5-4a3c-99a4-559d758eb96b/capacity_pool"}},"shared_capacity_group":{"links":{"self":"https://sandbox-api.didww.com/v3/dids/9df99644-f1a5-4a3c-99a4-559d758eb96b/relationships/shared_capacity_group","related":"https://sandbox-api.didww.com/v3/dids/9df99644-f1a5-4a3c-99a4-559d758eb96b/shared_capacity_group"}}}}}'
 -
     request:
         method: PATCH