diff --git a/composer.json b/composer.json
index 393a1d55..9663f372 100644
--- a/composer.json
+++ b/composer.json
@@ -30,7 +30,7 @@
     "ergebnis/test-util": "^1.0.0",
     "infection/infection": "~0.15.3",
     "phpstan/extension-installer": "^1.1.0",
-    "phpstan/phpstan": "~0.12.98",
+    "phpstan/phpstan": "~0.12.99",
     "phpstan/phpstan-deprecation-rules": "~0.12.6",
     "phpstan/phpstan-strict-rules": "~0.12.11",
     "phpunit/phpunit": "^8.5.20",
diff --git a/composer.lock b/composer.lock
index bf746742..64871c2b 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": "8c9449dbcccea5b52ce55ddc2d224c93",
+    "content-hash": "27722ed91dc8790580b99a1f1801d77a",
     "packages": [],
     "packages-dev": [
         {
@@ -2315,16 +2315,16 @@
         },
         {
             "name": "phpstan/phpstan",
-            "version": "0.12.98",
+            "version": "0.12.99",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpstan/phpstan.git",
-                "reference": "3bb7cc246c057405dd5e290c3ecc62ab51d57e00"
+                "reference": "b4d40f1d759942f523be267a1bab6884f46ca3f7"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/3bb7cc246c057405dd5e290c3ecc62ab51d57e00",
-                "reference": "3bb7cc246c057405dd5e290c3ecc62ab51d57e00",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/b4d40f1d759942f523be267a1bab6884f46ca3f7",
+                "reference": "b4d40f1d759942f523be267a1bab6884f46ca3f7",
                 "shasum": ""
             },
             "require": {
@@ -2355,7 +2355,7 @@
             "description": "PHPStan - PHP Static Analysis Tool",
             "support": {
                 "issues": "https://github.com/phpstan/phpstan/issues",
-                "source": "https://github.com/phpstan/phpstan/tree/0.12.98"
+                "source": "https://github.com/phpstan/phpstan/tree/0.12.99"
             },
             "funding": [
                 {
@@ -2375,7 +2375,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-09-02T12:33:01+00:00"
+            "time": "2021-09-12T20:09:55+00:00"
         },
         {
             "name": "phpstan/phpstan-deprecation-rules",