diff --git a/composer.json b/composer.json
index 1e40ef0..9df46a4 100644
--- a/composer.json
+++ b/composer.json
@@ -34,7 +34,7 @@
     "phpstan/phpstan-strict-rules": "~0.12.9",
     "phpunit/phpunit": "^8.5.20",
     "psalm/plugin-phpunit": "~0.16.1",
-    "vimeo/psalm": "^4.7.1"
+    "vimeo/psalm": "^4.9.3"
   },
   "config": {
     "platform": {
diff --git a/composer.lock b/composer.lock
index 479b8f5..5c288be 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": "6fb7931ba7cd95e82f43a48ea784d11c",
+    "content-hash": "a0401087a0063c21234059f30e6dbfa1",
     "packages": [
         {
             "name": "ergebnis/classy",
@@ -433,16 +433,16 @@
         },
         {
             "name": "composer/package-versions-deprecated",
-            "version": "1.11.99.2",
+            "version": "1.11.99.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/composer/package-versions-deprecated.git",
-                "reference": "c6522afe5540d5fc46675043d3ed5a45a740b27c"
+                "reference": "fff576ac850c045158a250e7e27666e146e78d18"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/composer/package-versions-deprecated/zipball/c6522afe5540d5fc46675043d3ed5a45a740b27c",
-                "reference": "c6522afe5540d5fc46675043d3ed5a45a740b27c",
+                "url": "https://api.github.com/repos/composer/package-versions-deprecated/zipball/fff576ac850c045158a250e7e27666e146e78d18",
+                "reference": "fff576ac850c045158a250e7e27666e146e78d18",
                 "shasum": ""
             },
             "require": {
@@ -486,7 +486,7 @@
             "description": "Composer plugin that provides efficient querying for installed package versions (no runtime IO)",
             "support": {
                 "issues": "https://github.com/composer/package-versions-deprecated/issues",
-                "source": "https://github.com/composer/package-versions-deprecated/tree/1.11.99.2"
+                "source": "https://github.com/composer/package-versions-deprecated/tree/1.11.99.3"
             },
             "funding": [
                 {
@@ -502,7 +502,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-05-24T07:46:03+00:00"
+            "time": "2021-08-17T13:49:14+00:00"
         },
         {
             "name": "composer/semver",
@@ -4106,16 +4106,16 @@
         },
         {
             "name": "symfony/console",
-            "version": "v5.3.6",
+            "version": "v5.3.7",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/console.git",
-                "reference": "51b71afd6d2dc8f5063199357b9880cea8d8bfe2"
+                "reference": "8b1008344647462ae6ec57559da166c2bfa5e16a"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/console/zipball/51b71afd6d2dc8f5063199357b9880cea8d8bfe2",
-                "reference": "51b71afd6d2dc8f5063199357b9880cea8d8bfe2",
+                "url": "https://api.github.com/repos/symfony/console/zipball/8b1008344647462ae6ec57559da166c2bfa5e16a",
+                "reference": "8b1008344647462ae6ec57559da166c2bfa5e16a",
                 "shasum": ""
             },
             "require": {
@@ -4185,7 +4185,7 @@
                 "terminal"
             ],
             "support": {
-                "source": "https://github.com/symfony/console/tree/v5.3.6"
+                "source": "https://github.com/symfony/console/tree/v5.3.7"
             },
             "funding": [
                 {
@@ -4201,7 +4201,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-07-27T19:10:22+00:00"
+            "time": "2021-08-25T20:02:16+00:00"
         },
         {
             "name": "symfony/event-dispatcher",
@@ -5396,16 +5396,16 @@
         },
         {
             "name": "symfony/string",
-            "version": "v5.3.3",
+            "version": "v5.3.7",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/string.git",
-                "reference": "bd53358e3eccec6a670b5f33ab680d8dbe1d4ae1"
+                "reference": "8d224396e28d30f81969f083a58763b8b9ceb0a5"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/string/zipball/bd53358e3eccec6a670b5f33ab680d8dbe1d4ae1",
-                "reference": "bd53358e3eccec6a670b5f33ab680d8dbe1d4ae1",
+                "url": "https://api.github.com/repos/symfony/string/zipball/8d224396e28d30f81969f083a58763b8b9ceb0a5",
+                "reference": "8d224396e28d30f81969f083a58763b8b9ceb0a5",
                 "shasum": ""
             },
             "require": {
@@ -5459,7 +5459,7 @@
                 "utf8"
             ],
             "support": {
-                "source": "https://github.com/symfony/string/tree/v5.3.3"
+                "source": "https://github.com/symfony/string/tree/v5.3.7"
             },
             "funding": [
                 {
@@ -5475,7 +5475,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-06-27T11:44:38+00:00"
+            "time": "2021-08-26T08:00:08+00:00"
         },
         {
             "name": "symfony/yaml",
@@ -5746,16 +5746,16 @@
         },
         {
             "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": {
@@ -5797,7 +5797,6 @@
                 "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": {
@@ -5845,9 +5844,9 @@
             ],
             "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",