diff --git a/composer.json b/composer.json
index 23992b2d..47269026 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,7 @@
     "phpstan/phpstan-strict-rules": "^0.12.10",
     "phpunit/phpunit": "^9.5.8",
     "psalm/plugin-phpunit": "^0.16.1",
-    "vimeo/psalm": "^4.9.2"
+    "vimeo/psalm": "^4.9.3"
   },
   "config": {
     "preferred-install": "dist",
diff --git a/composer.lock b/composer.lock
index d75c2bba..510e3e21 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": "da804e45a71fb871ff7db630a14a287b",
+    "content-hash": "d7a15e15e2c2d1e13e16ab16ba029e2b",
     "packages": [],
     "packages-dev": [
         {
@@ -4742,16 +4742,16 @@
         },
         {
             "name": "vimeo/psalm",
-            "version": "4.9.2",
+            "version": "4.9.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/vimeo/psalm.git",
-                "reference": "00c062267d6e3229d91a1939992987e2d46f2393"
+                "reference": "4c262932602b9bbab5020863d1eb22d49de0dbf4"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/vimeo/psalm/zipball/00c062267d6e3229d91a1939992987e2d46f2393",
-                "reference": "00c062267d6e3229d91a1939992987e2d46f2393",
+                "url": "https://api.github.com/repos/vimeo/psalm/zipball/4c262932602b9bbab5020863d1eb22d49de0dbf4",
+                "reference": "4c262932602b9bbab5020863d1eb22d49de0dbf4",
                 "shasum": ""
             },
             "require": {
@@ -4793,7 +4793,6 @@
                 "slevomat/coding-standard": "^7.0",
                 "squizlabs/php_codesniffer": "^3.5",
                 "symfony/process": "^4.3 || ^5.0",
-                "weirdan/phpunit-appveyor-reporter": "^1.0.0",
                 "weirdan/prophecy-shim": "^1.0 || ^2.0"
             },
             "suggest": {
@@ -4841,9 +4840,9 @@
             ],
             "support": {
                 "issues": "https://github.com/vimeo/psalm/issues",
-                "source": "https://github.com/vimeo/psalm/tree/4.9.2"
+                "source": "https://github.com/vimeo/psalm/tree/4.9.3"
             },
-            "time": "2021-08-01T01:15:26+00:00"
+            "time": "2021-08-14T16:19:38+00:00"
         },
         {
             "name": "webmozart/assert",