diff --git a/composer.json b/composer.json
index ff0ea9d..a0abc58 100644
--- a/composer.json
+++ b/composer.json
@@ -10,7 +10,7 @@
 		"phpgt/session": "1.*"
 	},
 	"require-dev": {
-		"phpstan/phpstan": "v1.8.0",
+		"phpstan/phpstan": "v1.8.1",
 		"phpunit/phpunit": "v9.5.21"
 	},
 
diff --git a/composer.lock b/composer.lock
index af0d78c..b3e9ec1 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "664e3f8865f19ea24ce519628cc6d6d5",
+    "content-hash": "dd884b4416b6cde1ec0165549826dad3",
     "packages": [
         {
             "name": "phpgt/cssxpath",
@@ -884,16 +884,16 @@
         },
         {
             "name": "phpstan/phpstan",
-            "version": "1.8.0",
+            "version": "1.8.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpstan/phpstan.git",
-                "reference": "b7648d4ee9321665acaf112e49da9fd93df8fbd5"
+                "reference": "8dbba631fa32f4b289404469c2afd6122fd61d67"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/b7648d4ee9321665acaf112e49da9fd93df8fbd5",
-                "reference": "b7648d4ee9321665acaf112e49da9fd93df8fbd5",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/8dbba631fa32f4b289404469c2afd6122fd61d67",
+                "reference": "8dbba631fa32f4b289404469c2afd6122fd61d67",
                 "shasum": ""
             },
             "require": {
@@ -919,7 +919,7 @@
             "description": "PHPStan - PHP Static Analysis Tool",
             "support": {
                 "issues": "https://github.com/phpstan/phpstan/issues",
-                "source": "https://github.com/phpstan/phpstan/tree/1.8.0"
+                "source": "https://github.com/phpstan/phpstan/tree/1.8.1"
             },
             "funding": [
                 {
@@ -939,7 +939,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2022-06-29T08:53:31+00:00"
+            "time": "2022-07-12T16:08:06+00:00"
         },
         {
             "name": "phpunit/php-code-coverage",
@@ -2443,5 +2443,5 @@
         "php": ">=8.1"
     },
     "platform-dev": [],
-    "plugin-api-version": "2.2.0"
+    "plugin-api-version": "2.3.0"
 }