diff --git a/composer.json b/composer.json
index 87c11f6c..e34c1173 100644
--- a/composer.json
+++ b/composer.json
@@ -105,15 +105,15 @@
         "php": "^8.0"
     },
     "require-dev": {
-        "phpstan/phpstan": "^1.5",
+        "phpstan/phpstan": "^1",
         "thecodingmachine/phpstan-strict-rules": "^1.0",
         "squizlabs/php_codesniffer": "^3.2",
         "phpunit/phpunit": "^10"
     },
     "scripts": {
         "test": "phpunit",
-        "phpstan": "phpstan analyse lib -c phpstan.neon --level=max --no-progress -vvv",
+        "phpstan": "phpstan analyse",
         "cs-fix": "phpcbf",
         "cs-check": "phpcs"
     }
-}
\ No newline at end of file
+}
diff --git a/generator/composer.json b/generator/composer.json
index 49def268..96d40856 100644
--- a/generator/composer.json
+++ b/generator/composer.json
@@ -19,11 +19,11 @@
     "thecodingmachine/phpstan-strict-rules": "^1.0",
     "squizlabs/php_codesniffer": "^3.2",
     "php-coveralls/php-coveralls": "^2.1",
-    "phpstan/phpstan": "^1.5"
+    "phpstan/phpstan": "^1"
   },
   "scripts": {
     "test": "vendor/bin/phpunit",
-    "phpstan": "phpstan analyse src -c phpstan.neon --level=max --no-progress -vvv",
+    "phpstan": "phpstan analyse",
     "cs-fix": "phpcbf",
     "cs-check": "phpcs"
   }
diff --git a/generator/phpstan.neon b/generator/phpstan.neon
index bf8cad2d..0dcbf845 100644
--- a/generator/phpstan.neon
+++ b/generator/phpstan.neon
@@ -1,4 +1,8 @@
 parameters:
+    paths:
+        - ./src
+    # The level 9 is the highest level (with check for mixed type)
+    level: 8
     ignoreErrors:
 includes:
-    - vendor/thecodingmachine/phpstan-strict-rules/phpstan-strict-rules.neon
\ No newline at end of file
+    - vendor/thecodingmachine/phpstan-strict-rules/phpstan-strict-rules.neon
diff --git a/phpstan.neon b/phpstan.neon
index d6b61d51..73518de6 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -1,5 +1,9 @@
 parameters:
+    paths:
+        - ./lib
+    # The level 9 is the highest level (with check for mixed type)
+    level: 8
     ignoreErrors:
         # A lot of functions are in extensions so it is ok not to find those
 includes:
-    - vendor/thecodingmachine/phpstan-strict-rules/phpstan-strict-rules.neon
\ No newline at end of file
+    - vendor/thecodingmachine/phpstan-strict-rules/phpstan-strict-rules.neon