diff --git a/composer.json b/composer.json
index df48961152451e0a14597e7637b4933a915e03e7..6344cd143939a50aa2c90694f5a6a1d96d8bd8a2 100644
--- a/composer.json
+++ b/composer.json
@@ -65,6 +65,7 @@
 		"symfony/dependency-injection": "^5.3.0",
 		"symfony/event-dispatcher-contracts": "^1.1 || ^2.0",
 		"symfony/expression-language": "^5.3.0",
+		"symfony/filesystem": "^5.3.0",
 		"symfony/finder": "^5.3.0",
 		"symfony/http-foundation": "^5.3.0",
 		"symfony/mailer": "^5.3.0",
diff --git a/composer.lock b/composer.lock
index e3774d2893561ee0117f11084c4eb1e38ed8953f..de3cb1b83645f64ffe6575c35f2b3dfbffba340b 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": "2b759f7cffd3da72b2874134e6809b2f",
+    "content-hash": "1829a3e70a84bfe469ad61f6b1a372e8",
     "packages": [
         {
             "name": "bacon/bacon-qr-code",
@@ -2629,21 +2629,22 @@
         },
         {
             "name": "symfony/filesystem",
-            "version": "v5.3.0",
+            "version": "v5.3.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/filesystem.git",
-                "reference": "348116319d7fb7d1faa781d26a48922428013eb2"
+                "reference": "343f4fe324383ca46792cae728a3b6e2f708fb32"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/filesystem/zipball/348116319d7fb7d1faa781d26a48922428013eb2",
-                "reference": "348116319d7fb7d1faa781d26a48922428013eb2",
+                "url": "https://api.github.com/repos/symfony/filesystem/zipball/343f4fe324383ca46792cae728a3b6e2f708fb32",
+                "reference": "343f4fe324383ca46792cae728a3b6e2f708fb32",
                 "shasum": ""
             },
             "require": {
                 "php": ">=7.2.5",
-                "symfony/polyfill-ctype": "~1.8"
+                "symfony/polyfill-ctype": "~1.8",
+                "symfony/polyfill-php80": "^1.16"
             },
             "type": "library",
             "autoload": {
@@ -2671,7 +2672,7 @@
             "description": "Provides basic utilities for the filesystem",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/filesystem/tree/v5.3.0"
+                "source": "https://github.com/symfony/filesystem/tree/v5.3.4"
             },
             "funding": [
                 {
@@ -2687,7 +2688,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-05-26T17:43:10+00:00"
+            "time": "2021-07-21T12:40:44+00:00"
         },
         {
             "name": "symfony/finder",
diff --git a/typo3/sysext/core/composer.json b/typo3/sysext/core/composer.json
index b1849115de152c55b59279a6909d1573ea61c8db..cf7f9508e2c3dd14bc0b55fae17810ccde18e24f 100644
--- a/typo3/sysext/core/composer.json
+++ b/typo3/sysext/core/composer.json
@@ -52,6 +52,7 @@
 		"symfony/dependency-injection": "^5.3.0",
 		"symfony/event-dispatcher-contracts": "^1.1 || ^2.0",
 		"symfony/expression-language": "^5.3.0",
+		"symfony/filesystem": "^5.3.0",
 		"symfony/finder": "^5.3.0",
 		"symfony/http-foundation": "^5.3.0",
 		"symfony/mailer": "^5.3.0",