diff --git a/composer.json b/composer.json
index 1d410273..97e68d98 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": "~0.12.62",
+    "phpstan/phpstan": "~0.12.64",
     "phpstan/phpstan-deprecation-rules": "~0.12.5",
     "phpstan/phpstan-strict-rules": "~0.12.7",
     "phpunit/phpunit": "^8.5.13",
diff --git a/composer.lock b/composer.lock
index 11f1bc18..b0ca3cde 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": "4cf74ec31a28079a8311a46ee8c9ed7a",
+    "content-hash": "2e19715094d3862911e05480e91255fc",
     "packages": [],
     "packages-dev": [
         {
@@ -2313,16 +2313,16 @@
         },
         {
             "name": "phpstan/phpstan",
-            "version": "0.12.62",
+            "version": "0.12.64",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpstan/phpstan.git",
-                "reference": "632393159335bbbdd7ca07d19b3ad50d76aa7fd8"
+                "reference": "23eb1cb7ae125f45f1d0e48051bcf67a9a9b08aa"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/632393159335bbbdd7ca07d19b3ad50d76aa7fd8",
-                "reference": "632393159335bbbdd7ca07d19b3ad50d76aa7fd8",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/23eb1cb7ae125f45f1d0e48051bcf67a9a9b08aa",
+                "reference": "23eb1cb7ae125f45f1d0e48051bcf67a9a9b08aa",
                 "shasum": ""
             },
             "require": {
@@ -2365,7 +2365,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2020-12-13T13:59:38+00:00"
+            "time": "2020-12-21T11:59:02+00:00"
         },
         {
             "name": "phpstan/phpstan-deprecation-rules",