diff --git a/composer.json b/composer.json
index e0227872..5b58a34a 100644
--- a/composer.json
+++ b/composer.json
@@ -23,7 +23,7 @@
   "require-dev": {
     "ergebnis/license": "~1.0.0",
     "ergebnis/php-cs-fixer-config": "^2.1.2",
-    "ergebnis/phpstan-rules": "~0.14.4",
+    "ergebnis/phpstan-rules": "~0.15.0",
     "ergebnis/test-util": "~1.0.0",
     "infection/infection": "~0.13.6",
     "phpbench/phpbench": "~0.16.10",
diff --git a/composer.lock b/composer.lock
index 125d97a1..103c251a 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": "e6e748c58ebb8239104eeb5516dccc89",
+    "content-hash": "93c2cb92edb2fd6a55156ae8c8bf3558",
     "packages": [],
     "packages-dev": [
         {
@@ -729,16 +729,16 @@
         },
         {
             "name": "ergebnis/phpstan-rules",
-            "version": "0.14.4",
+            "version": "0.15.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/ergebnis/phpstan-rules.git",
-                "reference": "72eeba43afe81837d67349b3794c2f4157a2640c"
+                "reference": "f0c49d0efdaebd9e663e9e5637253ebcc41048d7"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/ergebnis/phpstan-rules/zipball/72eeba43afe81837d67349b3794c2f4157a2640c",
-                "reference": "72eeba43afe81837d67349b3794c2f4157a2640c",
+                "url": "https://api.github.com/repos/ergebnis/phpstan-rules/zipball/f0c49d0efdaebd9e663e9e5637253ebcc41048d7",
+                "reference": "f0c49d0efdaebd9e663e9e5637253ebcc41048d7",
                 "shasum": ""
             },
             "require": {
@@ -748,18 +748,18 @@
                 "phpstan/phpstan": "~0.11.15 || ~0.12.0"
             },
             "require-dev": {
-                "ergebnis/composer-normalize": "^2.3.0",
-                "ergebnis/license": "~0.1.0",
-                "ergebnis/php-cs-fixer-config": "^2.1.0",
+                "ergebnis/composer-normalize": "^2.5.1",
+                "ergebnis/license": "~1.0.0",
+                "ergebnis/php-cs-fixer-config": "^2.1.2",
                 "ergebnis/test-util": "~1.0.0",
                 "infection/infection": "~0.13.6",
                 "nette/di": "^3.0.1",
                 "phpstan/phpstan-deprecation-rules": "~0.11.2",
                 "phpstan/phpstan-strict-rules": "~0.11.1",
                 "phpunit/phpunit": "^7.5.20",
-                "psalm/plugin-phpunit": "~0.9.0",
+                "psalm/plugin-phpunit": "~0.10.0",
                 "psr/container": "^1.0.0",
-                "vimeo/psalm": "^3.9.5",
+                "vimeo/psalm": "^3.11.2",
                 "zendframework/zend-servicemanager": "^2.0.0"
             },
             "type": "phpstan-extension",
@@ -792,7 +792,7 @@
                 "phpstan-extreme-rules",
                 "phpstan-rules"
             ],
-            "time": "2020-03-13T20:00:07+00:00"
+            "time": "2020-05-10T18:39:28+00:00"
         },
         {
             "name": "ergebnis/test-util",