diff --git a/symfony/composer.lock b/symfony/composer.lock
index 71bc43f..2d84661 100644
--- a/symfony/composer.lock
+++ b/symfony/composer.lock
@@ -2539,21 +2539,22 @@
         },
         {
             "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"
@@ -2602,7 +2603,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-05-26T12:52:38+00:00"
+            "time": "2021-07-21T12:38:00+00:00"
         },
         {
             "name": "symfony/error-handler",