diff --git a/README.md b/README.md
index 2814891..81d3863 100644
--- a/README.md
+++ b/README.md
@@ -14,10 +14,10 @@ PHP: PHP 7.2 or higher
 
 Magento: Magento 2.3.0 or higher
 
-PHPStan: PHPStan 1.10
+PHPStan: PHPStan 1.11
 
 If you are using a Magento version that requires an older version of PHPStan (e.g. 0.12.77),  you need to manually upgrade it before 
-installing this extension. in your composer.json Change the PHPStan version to `~1.10` and run:
+installing this extension. in your composer.json Change the PHPStan version to `~1.11` and run:
 
 ```
 composer update phpstan/phpstan --with-all-dependencies
diff --git a/composer.json b/composer.json
index 67a7eac..cf3f972 100644
--- a/composer.json
+++ b/composer.json
@@ -23,7 +23,7 @@
     "php": "^7.2.0 || ^8.1.0",
     "ext-dom": "*",
     "laminas/laminas-code": "~3.3.0 || ~3.4.1 || ~3.5.1 || ^4.5 || ^4.10",
-    "phpstan/phpstan": "~1.10.3",
+    "phpstan/phpstan": "~1.11.1",
     "symfony/finder": "^3.0 || ^4.0 || ^5.0 || ^6.0"
   },
   "conflict": {
diff --git a/phpstan.neon b/phpstan.neon
index bc46835..931cc8e 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -41,13 +41,13 @@ parameters:
             message: '~is not covered by backward compatibility promise.~'
             path: tests/bitExpert/PHPStan/Magento/Autoload/ExtensionAutoloaderUnitTest.php
         -
-            message: '~Parameter #1 $argument of class ReflectionClass constructor expects class-string<MyUncachedExtension>|MyUncachedExtension, string given~'
+            message: '~Parameter #1 \$argument of class ReflectionClass constructor expects class-string<MyUncachedExtension>|MyUncachedExtension, string given~'
             path: tests/bitExpert/PHPStan/Magento/Autoload/ExtensionAutoloaderUnitTest.php
         -
             message: '~is not covered by backward compatibility promise.~'
             path: tests/bitExpert/PHPStan/Magento/Autoload/ExtensionInterfaceAutoloaderUnitTest.php
         -
-            message: '~Parameter #1 $argument of class ReflectionClass constructor expects class-string<UncachedExtensionInterface>|UncachedExtensionInterface, string given~'
+            message: '~Parameter #1 \$argument of class ReflectionClass constructor expects class-string<UncachedExtensionInterface>|UncachedExtensionInterface, string given~'
             path: tests/bitExpert/PHPStan/Magento/Autoload/ExtensionInterfaceAutoloaderUnitTest.php
         -
             message: '~bitExpert\\PHPStan\\Magento\\Rules\\Helper\\SampleModel::__construct\(\) does not call parent constructor~'