diff --git a/composer.json b/composer.json
index a75d1b2..81629f7 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,7 @@
     },
     "require-dev": {
         "friendsofphp/php-cs-fixer": "^3.2",
-        "phpstan/phpstan": "^0.12.99",
+        "phpstan/phpstan": "^1.10",
         "phpunit/phpunit": "^9"
     },
     "autoload": {
@@ -31,7 +31,7 @@
         }
     },
     "scripts": {
-        "phpstan": "phpstan analyze --memory-limit 512M analyze src --level 8",
+        "phpstan": "phpstan analyze src --memory-limit 512M --level 8",
         "phpunit": "phpunit"
     },
     "config": {
diff --git a/src/V1/Factory.php b/src/V1/Factory.php
index 311e394..1aa780d 100644
--- a/src/V1/Factory.php
+++ b/src/V1/Factory.php
@@ -54,7 +54,7 @@ final class Factory implements FactoryInterface
     ];
 
     /**
-     * @param array<string, string> $overload specs to be overloaded with custom classes
+     * @param array<string, class-string> $overload specs to be overloaded with custom classes
      */
     public function __construct(array $overload = [])
     {