diff --git a/.phive/phars.xml b/.phive/phars.xml
index 2c4c998..35f9832 100644
--- a/.phive/phars.xml
+++ b/.phive/phars.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <phive xmlns="https://phar.io/phive">
-  <phar name="psalm" version="^4.30.0" installed="4.30.0" location="./tools/psalm.phar" copy="true"/>
+  <phar name="psalm" version="^5.9.0" installed="5.9.0" location="./tools/psalm.phar" copy="true"/>
   <phar name="php-cs-fixer" version="^3.13.0" installed="3.13.0" location="./tools/php-cs-fixer.phar" copy="true"/>
 </phive>
diff --git a/composer.json b/composer.json
index 0bc2871..1c8bc9c 100644
--- a/composer.json
+++ b/composer.json
@@ -24,13 +24,13 @@
         "ext-soap": "*",
         "ext-dom": "*",
         "azjezz/psl": "^2.1",
-        "php-soap/engine": "^1.3",
+        "php-soap/engine": "^1.3|^2.0",
         "php-soap/wsdl": "^1.3",
         "symfony/options-resolver": "^5.4 || ^6.0"
     },
     "require-dev": {
-        "php-soap/engine-integration-tests": "^1.3",
+        "php-soap/engine-integration-tests": "^1.4",
         "php-soap/xml": "^1.4",
-        "phpunit/phpunit": "^9.5"
+        "phpunit/phpunit": "^10.0.19"
     }
 }
diff --git a/src/Configuration/ClassMap/ClassMapCollection.php b/src/Configuration/ClassMap/ClassMapCollection.php
index e5693e6..bcdeb7d 100644
--- a/src/Configuration/ClassMap/ClassMapCollection.php
+++ b/src/Configuration/ClassMap/ClassMapCollection.php
@@ -5,6 +5,9 @@
 use ArrayIterator;
 use IteratorAggregate;
 
+/**
+ * @implements IteratorAggregate<array-key, ClassMapInterface>
+ */
 final class ClassMapCollection implements IteratorAggregate
 {
     /**
diff --git a/src/Configuration/TypeConverter/TypeConverterCollection.php b/src/Configuration/TypeConverter/TypeConverterCollection.php
index aa0e623..d0b3797 100644
--- a/src/Configuration/TypeConverter/TypeConverterCollection.php
+++ b/src/Configuration/TypeConverter/TypeConverterCollection.php
@@ -6,6 +6,9 @@
 use InvalidArgumentException;
 use IteratorAggregate;
 
+/**
+ * @implements IteratorAggregate<array-key, TypeConverterInterface>
+ */
 final class TypeConverterCollection implements IteratorAggregate
 {
     /**
@@ -25,7 +28,7 @@ public function __construct(array $converters = [])
         }
     }
 
-    
+
     private function serialize(TypeConverterInterface $converter): string
     {
         return $converter->getTypeNamespace() . ':' . $converter->getTypeName();
diff --git a/tools/psalm.phar b/tools/psalm.phar
index 86184ee..673e2aa 100755
Binary files a/tools/psalm.phar and b/tools/psalm.phar differ