diff --git a/composer.json b/composer.json
index bd3c54a9..fc5fa7ef 100644
--- a/composer.json
+++ b/composer.json
@@ -38,7 +38,7 @@
     "phpunit/phpunit": "^7.5.20",
     "psalm/plugin-phpunit": "~0.9.0",
     "symfony/filesystem": "^4.4.4",
-    "vimeo/psalm": "^3.9.2"
+    "vimeo/psalm": "^3.9.3"
   },
   "config": {
     "platform": {
diff --git a/composer.lock b/composer.lock
index cbd8098b..c142be59 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": "64e251ea0e34735c60a740b55ef90f9f",
+    "content-hash": "2e9c3bb42b794c2d0d5f8cc479f37db4",
     "packages": [
         {
             "name": "ergebnis/json-normalizer",
@@ -4329,16 +4329,16 @@
         },
         {
             "name": "vimeo/psalm",
-            "version": "3.9.2",
+            "version": "3.9.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/vimeo/psalm.git",
-                "reference": "87d8947ff36d8b71f54b7e46b93384cf010681a0"
+                "reference": "2e4154d76e24d1b4e59e6cc2bebef7790cb9e550"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/vimeo/psalm/zipball/87d8947ff36d8b71f54b7e46b93384cf010681a0",
-                "reference": "87d8947ff36d8b71f54b7e46b93384cf010681a0",
+                "url": "https://api.github.com/repos/vimeo/psalm/zipball/2e4154d76e24d1b4e59e6cc2bebef7790cb9e550",
+                "reference": "2e4154d76e24d1b4e59e6cc2bebef7790cb9e550",
                 "shasum": ""
             },
             "require": {
@@ -4420,7 +4420,7 @@
                 "inspection",
                 "php"
             ],
-            "time": "2020-02-18T20:08:32+00:00"
+            "time": "2020-02-19T01:30:37+00:00"
         },
         {
             "name": "webmozart/assert",