diff --git a/composer.json b/composer.json
index 91c35cfc..5b805fcd 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": "^1.0.5",
-    "phpstan/phpstan": "~0.12.56",
+    "phpstan/phpstan": "~0.12.57",
     "phpstan/phpstan-deprecation-rules": "~0.12.5",
     "phpstan/phpstan-strict-rules": "~0.12.5",
     "phpunit/phpunit": "^8.5.9",
diff --git a/composer.lock b/composer.lock
index 424b110a..87f4f55f 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": "afed2b1e31e7a455df0c0d67dc59e557",
+    "content-hash": "ab359cb83b3caad4a56423af2e457971",
     "packages": [],
     "packages-dev": [
         {
@@ -2313,16 +2313,16 @@
         },
         {
             "name": "phpstan/phpstan",
-            "version": "0.12.56",
+            "version": "0.12.57",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpstan/phpstan.git",
-                "reference": "007fd5d700c41e1bb27795fae15a2383f8fa4ba1"
+                "reference": "f9909d1d0c44b4cbaf72babcf80e8f14d6fdd55b"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/007fd5d700c41e1bb27795fae15a2383f8fa4ba1",
-                "reference": "007fd5d700c41e1bb27795fae15a2383f8fa4ba1",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/f9909d1d0c44b4cbaf72babcf80e8f14d6fdd55b",
+                "reference": "f9909d1d0c44b4cbaf72babcf80e8f14d6fdd55b",
                 "shasum": ""
             },
             "require": {
@@ -2365,7 +2365,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2020-11-16T22:59:18+00:00"
+            "time": "2020-11-21T12:53:28+00:00"
         },
         {
             "name": "phpstan/phpstan-deprecation-rules",