diff --git a/composer.json b/composer.json
index d8c5168..56465ad 100644
--- a/composer.json
+++ b/composer.json
@@ -16,9 +16,9 @@
     },
     "require-dev": {
         "composer/composer": "^2.0.8",
-        "phpstan/phpstan": "0.12.92",
-        "phpstan/phpstan-phpunit": "^0.12.16",
-        "phpstan/phpstan-webmozart-assert": "^0.12.7",
+        "phpstan/phpstan": "^1",
+        "phpstan/phpstan-phpunit": "^1",
+        "phpstan/phpstan-webmozart-assert": "^1",
         "symfony/console": "^5.2",
         "symfony/dotenv": "^5.2",
         "symfony/finder": "^5.2",
diff --git a/phpstan.neon b/phpstan.neon
index 76b16ea..ef63d7a 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -4,6 +4,6 @@ includes:
     - phpstan-baseline.neon
 
 parameters:
-    level: max
+    level: 8
     paths:
         - src