diff --git a/composer.json b/composer.json
index f641c250..7ed1512d 100644
--- a/composer.json
+++ b/composer.json
@@ -23,7 +23,7 @@
     "infection/infection": "~0.13.6",
     "jangregor/phpstan-prophecy": "~0.6.2",
     "phpstan/extension-installer": "^1.0.4",
-    "phpstan/phpstan": "~0.12.22",
+    "phpstan/phpstan": "~0.12.23",
     "phpstan/phpstan-deprecation-rules": "~0.12.2",
     "phpstan/phpstan-phpunit": "~0.12.8",
     "phpstan/phpstan-strict-rules": "~0.12.2",
diff --git a/composer.lock b/composer.lock
index 8721530c..732637ec 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": "da33e1b12c51edc9431f590f9515b62c",
+    "content-hash": "c6cd065c11bdf8821037fc37c79f978b",
     "packages": [
         {
             "name": "composer/semver",
@@ -3294,16 +3294,16 @@
         },
         {
             "name": "phpstan/phpstan",
-            "version": "0.12.22",
+            "version": "0.12.23",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpstan/phpstan.git",
-                "reference": "59090e1b84efca9310e58586aeb787521aa00b10"
+                "reference": "71e529efced79e055fa8318b692e7f7d03ea4e75"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/59090e1b84efca9310e58586aeb787521aa00b10",
-                "reference": "59090e1b84efca9310e58586aeb787521aa00b10",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/71e529efced79e055fa8318b692e7f7d03ea4e75",
+                "reference": "71e529efced79e055fa8318b692e7f7d03ea4e75",
                 "shasum": ""
             },
             "require": {
@@ -3332,7 +3332,7 @@
                 "MIT"
             ],
             "description": "PHPStan - PHP Static Analysis Tool",
-            "time": "2020-05-04T09:21:25+00:00"
+            "time": "2020-05-05T12:55:44+00:00"
         },
         {
             "name": "phpstan/phpstan-deprecation-rules",