diff --git a/user-auth/graphtutorial/composer.json b/user-auth/graphtutorial/composer.json
index 99c7f0b..27d7680 100644
--- a/user-auth/graphtutorial/composer.json
+++ b/user-auth/graphtutorial/composer.json
@@ -12,7 +12,7 @@
         "php-http/guzzle7-adapter": "^1.0"
     },
     "require-dev": {
-        "phpstan/phpstan": "^1.10"
+        "phpstan/phpstan": "^2.1"
     },
     "minimum-stability": "dev",
     "prefer-stable": true,
diff --git a/user-auth/graphtutorial/composer.lock b/user-auth/graphtutorial/composer.lock
index 436ecac..ce444d6 100644
--- a/user-auth/graphtutorial/composer.lock
+++ b/user-auth/graphtutorial/composer.lock
@@ -4,7 +4,7 @@
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     ],
-    "content-hash": "4e46cf8f89e53a5f3ff8faf383fa9bd4",
+    "content-hash": "732e08b5ef58f9e6b83d6f89d6e33730",
     "packages": [
         {
             "name": "brick/math",
@@ -2953,20 +2953,20 @@
     "packages-dev": [
         {
             "name": "phpstan/phpstan",
-            "version": "1.12.7",
+            "version": "2.1.28",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpstan/phpstan.git",
-                "reference": "dc2b9976bd8b0f84ec9b0e50cc35378551de7af0"
+                "reference": "578fa296a166605d97b94091f724f1257185d278"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/dc2b9976bd8b0f84ec9b0e50cc35378551de7af0",
-                "reference": "dc2b9976bd8b0f84ec9b0e50cc35378551de7af0",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/578fa296a166605d97b94091f724f1257185d278",
+                "reference": "578fa296a166605d97b94091f724f1257185d278",
                 "shasum": ""
             },
             "require": {
-                "php": "^7.2|^8.0"
+                "php": "^7.4|^8.0"
             },
             "conflict": {
                 "phpstan/phpstan-shim": "*"
@@ -3007,7 +3007,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2024-10-18T11:12:07+00:00"
+            "time": "2025-09-19T08:58:49+00:00"
         }
     ],
     "aliases": [],