diff --git a/composer.json b/composer.json
index bcec3a72b8e..953f06931e3 100644
--- a/composer.json
+++ b/composer.json
@@ -52,7 +52,7 @@
       "symfony/filesystem": "~6.4.0"
    },
    "require-dev": {
-      "phpstan/phpstan": "1.10.50",
+      "phpstan/phpstan": "1.10.55",
       "phpstan/phpstan-phpunit": "^1.1.0",
       "phpstan/phpstan-strict-rules": "^1.2.0",
       "phpunit/phpunit": "~10.3.0 || ~10.2.0 || ~10.1.0"
diff --git a/composer.lock b/composer.lock
index f8e0b31af66..444f2e870d4 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": "894648a63ed7cd84303937208d1684af",
+    "content-hash": "d7a3fceea557add1b8cb461554db1ee7",
     "packages": [
         {
             "name": "adhocore/json-comment",
@@ -1378,16 +1378,16 @@
         },
         {
             "name": "phpstan/phpstan",
-            "version": "1.10.50",
+            "version": "1.10.55",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpstan/phpstan.git",
-                "reference": "06a98513ac72c03e8366b5a0cb00750b487032e4"
+                "reference": "9a88f9d18ddf4cf54c922fbeac16c4cb164c5949"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/06a98513ac72c03e8366b5a0cb00750b487032e4",
-                "reference": "06a98513ac72c03e8366b5a0cb00750b487032e4",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/9a88f9d18ddf4cf54c922fbeac16c4cb164c5949",
+                "reference": "9a88f9d18ddf4cf54c922fbeac16c4cb164c5949",
                 "shasum": ""
             },
             "require": {
@@ -1436,7 +1436,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2023-12-13T10:59:42+00:00"
+            "time": "2024-01-08T12:32:40+00:00"
         },
         {
             "name": "phpstan/phpstan-phpunit",