diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 9ceb096..48d4abf 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -2,9 +2,9 @@ name: Check
 
 on:
   push:
-    branches: ['2.0']
+    branches: ['3.0']
   pull_request:
-    branches: ['2.0']
+    branches: ['3.0']
 
 jobs:
 
@@ -14,7 +14,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php: ['7.4', '8.0', '8.1', '8.2']
+        php: ['8.1', '8.2', '8.3']
     steps:
 
     - name: Checkout
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8f67829..c9f9618 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## 3.0.0
+
+### PHP support
+
+- Dropped support for PHP `8.0` and lower.
+- Added support for PHP `8.3`.
+
 ## 2.0.1
 
 ### PHP support
diff --git a/composer.json b/composer.json
index 1b16781..eb0c7c5 100644
--- a/composer.json
+++ b/composer.json
@@ -22,11 +22,11 @@
     }
   },
   "require": {
-    "php": "7.4.* || 8.0.* || 8.1.* || 8.2.*"
+    "php": "8.1.* || 8.2.* || 8.3.*"
   },
   "require-dev": {
-    "phpstan/phpstan": "1.9.12",
-    "phpunit/phpunit": "9.5.28",
-    "squizlabs/php_codesniffer": "3.7.1"
+    "phpstan/phpstan": "1.10.46",
+    "phpunit/phpunit": "10.4.2",
+    "squizlabs/php_codesniffer": "3.7.2"
   }
 }
diff --git a/phpunit.xml b/phpunit.xml
index 84828d8..3ac9e70 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -1,19 +1,17 @@
 <?xml version="1.0"?>
 <phpunit
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-  xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd"
+  xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.4/phpunit.xsd"
   bootstrap="./vendor/autoload.php"
   colors="true"
 >
-
-  <coverage>
-    <include>
-      <directory suffix=".php">src/</directory>
-    </include>
-  </coverage>
-
+  <coverage/>
   <testsuite name="DomainObject">
     <directory>./tests/AngryBytes/DomainObject/Test</directory>
   </testsuite>
-
+  <source>
+    <include>
+      <directory suffix=".php">src/</directory>
+    </include>
+  </source>
 </phpunit>
diff --git a/src/AngryBytes/DomainObject.php b/src/AngryBytes/DomainObject.php
index b61d01c..b03e721 100644
--- a/src/AngryBytes/DomainObject.php
+++ b/src/AngryBytes/DomainObject.php
@@ -2,6 +2,8 @@
 
 namespace AngryBytes;
 
+use InvalidArgumentException;
+
 /**
  * DomainObject
  *
@@ -144,10 +146,7 @@ public function getPropertyValueAsSimple(string $property)
      */
     public function propertyIsTraversable(string $property): bool
     {
-        return is_array($this->$property)
-            || $this->$property instanceof \Traversable
-            ||  $this->$property instanceof \stdClass
-            ;
+        return is_iterable($this->$property) || $this->$property instanceof \stdClass;
     }
 
     /**
@@ -162,7 +161,7 @@ public function __get(string $name)
 
         // Make sure there's a getter
         if (!method_exists($this, $function)) {
-            throw new \InvalidArgumentException(
+            throw new InvalidArgumentException(
                 'No getter for "' . $name . '" in "' . get_class($this) . '"'
             );
         }
@@ -180,7 +179,7 @@ public function __set(string $name, mixed $value): void
 
         // Make sure there's a getter
         if (!method_exists($this, $function)) {
-            throw new \InvalidArgumentException('No setter for "' . $name . '"');
+            throw new InvalidArgumentException('No setter for "' . $name . '"');
         }
 
         $this->$function($value);
@@ -213,7 +212,7 @@ private function getGetters(): array
         $getters = [];
         foreach ($reflection->getMethods(\ReflectionMethod::IS_PUBLIC) as $method) {
             // Only methods starting with "get" make the cut
-            if (substr($method->getName(), 0, 3) !== 'get') {
+            if (!str_starts_with($method->getName(), 'get')) {
                 continue;
             }