diff --git a/composer.json b/composer.json
index 2351b2c..9c4c55a 100644
--- a/composer.json
+++ b/composer.json
@@ -28,7 +28,7 @@
     "larapack/dd": "^1.1",
     "phpmd/phpmd": "^2.9",
     "phpspec/prophecy-phpunit": "^2.0",
-    "phpstan/phpstan": "2.1.11",
+    "phpstan/phpstan": "2.1.31",
     "phpunit/phpunit": "^9.3",
     "rregeer/phpunit-coverage-check": "^0.3.1",
     "slevomat/coding-standard": "^8.15",
diff --git a/composer.lock b/composer.lock
index d01f509..6c1ffd3 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": "d0f24a8f61aeea9e15fe1071d7635a1c",
+    "content-hash": "4ed6b5dabc6ebc550ccab1f3715d2cea",
     "packages": [
         {
             "name": "brick/math",
@@ -5133,16 +5133,11 @@
         },
         {
             "name": "phpstan/phpstan",
-            "version": "2.1.11",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/phpstan/phpstan.git",
-                "reference": "8ca5f79a8f63c49b2359065832a654e1ec70ac30"
-            },
+            "version": "2.1.31",
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/8ca5f79a8f63c49b2359065832a654e1ec70ac30",
-                "reference": "8ca5f79a8f63c49b2359065832a654e1ec70ac30",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/ead89849d879fe203ce9292c6ef5e7e76f867b96",
+                "reference": "ead89849d879fe203ce9292c6ef5e7e76f867b96",
                 "shasum": ""
             },
             "require": {
@@ -5187,7 +5182,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2025-03-24T13:45:00+00:00"
+            "time": "2025-10-10T14:14:11+00:00"
         },
         {
             "name": "phpunit/php-code-coverage",
@@ -7261,12 +7256,12 @@
     ],
     "aliases": [],
     "minimum-stability": "dev",
-    "stability-flags": [],
+    "stability-flags": {},
     "prefer-stable": true,
     "prefer-lowest": false,
     "platform": {
         "php": "^8.1"
     },
-    "platform-dev": [],
-    "plugin-api-version": "2.2.0"
+    "platform-dev": {},
+    "plugin-api-version": "2.6.0"
 }