diff --git a/composer.json b/composer.json
index 39e402d5..6e8bb0a5 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,7 @@
     "ergebnis/phpstan-rules": "~0.14.4",
     "ergebnis/test-util": "~0.9.1",
     "phpstan/extension-installer": "^1.0.3",
-    "phpstan/phpstan": "~0.12.14",
+    "phpstan/phpstan": "~0.12.15",
     "phpstan/phpstan-deprecation-rules": "~0.12.2",
     "phpstan/phpstan-phpunit": "~0.12.6",
     "phpstan/phpstan-strict-rules": "~0.12.2",
diff --git a/composer.lock b/composer.lock
index 97697d9b..2aecccd2 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": "7f3ec0ead98e9bfc97996eadc87704ab",
+    "content-hash": "fe7715ba6544ce7268e8961263e1aaa8",
     "packages": [],
     "packages-dev": [
         {
@@ -2578,16 +2578,16 @@
         },
         {
             "name": "phpstan/phpstan",
-            "version": "0.12.14",
+            "version": "0.12.15",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpstan/phpstan.git",
-                "reference": "37bdd26a80235d0f9045b49f4151102b7831cbe2"
+                "reference": "3928a303954338eb8ed201cfe69134950318b470"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/37bdd26a80235d0f9045b49f4151102b7831cbe2",
-                "reference": "37bdd26a80235d0f9045b49f4151102b7831cbe2",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/3928a303954338eb8ed201cfe69134950318b470",
+                "reference": "3928a303954338eb8ed201cfe69134950318b470",
                 "shasum": ""
             },
             "require": {
@@ -2613,7 +2613,7 @@
                 "MIT"
             ],
             "description": "PHPStan - PHP Static Analysis Tool",
-            "time": "2020-03-02T22:29:43+00:00"
+            "time": "2020-03-16T15:27:38+00:00"
         },
         {
             "name": "phpstan/phpstan-deprecation-rules",