diff --git a/composer.lock b/composer.lock
index 1715c82..bea9fd5 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": "f253f5360f5a5801c6fa721bde0c08b5",
+    "content-hash": "71e846a8b6688a9e07c24696b2d0ad75",
     "packages": [
         {
             "name": "beberlei/doctrineextensions",
@@ -4348,21 +4348,22 @@
         },
         {
             "name": "symfony/dotenv",
-            "version": "v5.3.0",
+            "version": "v5.3.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/dotenv.git",
-                "reference": "1ac423fcc9548709077f90aca26c733cdb7e6e5c"
+                "reference": "f0fcb3406dafc7730e3df7add94ca287d682b46b"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/dotenv/zipball/1ac423fcc9548709077f90aca26c733cdb7e6e5c",
-                "reference": "1ac423fcc9548709077f90aca26c733cdb7e6e5c",
+                "url": "https://api.github.com/repos/symfony/dotenv/zipball/f0fcb3406dafc7730e3df7add94ca287d682b46b",
+                "reference": "f0fcb3406dafc7730e3df7add94ca287d682b46b",
                 "shasum": ""
             },
             "require": {
                 "php": ">=7.2.5",
-                "symfony/deprecation-contracts": "^2.1"
+                "symfony/deprecation-contracts": "^2.1",
+                "symfony/polyfill-php80": "^1.16"
             },
             "require-dev": {
                 "symfony/process": "^4.4|^5.0"
@@ -4398,7 +4399,7 @@
                 "environment"
             ],
             "support": {
-                "source": "https://github.com/symfony/dotenv/tree/v5.3.0"
+                "source": "https://github.com/symfony/dotenv/tree/v5.3.4"
             },
             "funding": [
                 {
@@ -4414,7 +4415,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-05-26T12:52:38+00:00"
+            "time": "2021-07-21T12:38:00+00:00"
         },
         {
             "name": "symfony/error-handler",