diff --git a/composer.json b/composer.json
index b8900c5..b1c2b87 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,7 @@
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     "bin": ["bin/logchecker"],
     "require-dev": {
-        "phpstan/phpstan": "^1.10",
+        "phpstan/phpstan": "^1.12",
         "phpunit/phpunit": "^10.5",
         "squizlabs/php_codesniffer": "^3.8"
     },
diff --git a/composer.lock b/composer.lock
index 1ab89d8..1e9b803 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
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     ],
-    "content-hash": "7f154ad99b1d7d4d57ba32adf8ecaaa9",
+    "content-hash": "b851297f58a238fabc1be9f0a326f3f4",
     "packages": [
         {
             "name": "psr/container",
@@ -1083,16 +1083,16 @@
         },
         {
             "name": "phpstan/phpstan",
-            "version": "1.10.57",
+            "version": "1.12.28",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpstan/phpstan.git",
-                "reference": "1627b1d03446904aaa77593f370c5201d2ecc34e"
+                "reference": "fcf8b71aeab4e1a1131d1783cef97b23a51b87a9"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/1627b1d03446904aaa77593f370c5201d2ecc34e",
-                "reference": "1627b1d03446904aaa77593f370c5201d2ecc34e",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/fcf8b71aeab4e1a1131d1783cef97b23a51b87a9",
+                "reference": "fcf8b71aeab4e1a1131d1783cef97b23a51b87a9",
                 "shasum": ""
             },
             "require": {
@@ -1135,13 +1135,9 @@
                 {
                     "url": "https://github.com/phpstan",
                     "type": "github"
-                },
-                {
-                    "url": "https://tidelift.com/funding/github/packagist/phpstan/phpstan",
-                    "type": "tidelift"
                 }
             ],
-            "time": "2024-01-24T11:51:34+00:00"
+            "time": "2025-07-17T17:15:39+00:00"
         },
         {
             "name": "phpunit/php-code-coverage",
@@ -2613,7 +2609,7 @@
     ],
     "aliases": [],
     "minimum-stability": "stable",
-    "stability-flags": [],
+    "stability-flags": {},
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
@@ -2621,7 +2617,7 @@
         "ext-iconv": "*",
         "ext-mbstring": "*"
     },
-    "platform-dev": [],
+    "platform-dev": {},
     "platform-overrides": {
         "php": "8.1"
     },