diff --git a/composer.json b/composer.json
index 3375a027..e4f7cf81 100644
--- a/composer.json
+++ b/composer.json
@@ -34,7 +34,7 @@
     "phpstan/phpstan-strict-rules": "~0.12.5",
     "phpunit/phpunit": "^8.5.8",
     "psalm/plugin-phpunit": "~0.12.2",
-    "vimeo/psalm": "^3.17"
+    "vimeo/psalm": "^3.18"
   },
   "config": {
     "platform": {
diff --git a/composer.lock b/composer.lock
index b8c277a1..1677ac13 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": "4c2459b6b98b055919ea6cb149227fc0",
+    "content-hash": "fad12f3f626ccabb36e97783bc4caba6",
     "packages": [
         {
             "name": "ergebnis/classy",
@@ -5351,16 +5351,16 @@
         },
         {
             "name": "vimeo/psalm",
-            "version": "3.17.2",
+            "version": "3.18.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/vimeo/psalm.git",
-                "reference": "9e526d9cb569fe4631e6a737bbb7948d05596e3f"
+                "reference": "a463c894c4323e84121b5978867923efc6f8554a"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/vimeo/psalm/zipball/9e526d9cb569fe4631e6a737bbb7948d05596e3f",
-                "reference": "9e526d9cb569fe4631e6a737bbb7948d05596e3f",
+                "url": "https://api.github.com/repos/vimeo/psalm/zipball/a463c894c4323e84121b5978867923efc6f8554a",
+                "reference": "a463c894c4323e84121b5978867923efc6f8554a",
                 "shasum": ""
             },
             "require": {
@@ -5447,7 +5447,7 @@
                 "inspection",
                 "php"
             ],
-            "time": "2020-10-15T00:23:17+00:00"
+            "time": "2020-10-19T19:02:41+00:00"
         },
         {
             "name": "webmozart/assert",