diff --git a/config/bootstrap.php b/config/bootstrap.php
deleted file mode 100644
index 6be474e2c..000000000
--- a/config/bootstrap.php
+++ /dev/null
@@ -1,32 +0,0 @@
-<?php
-
-/**
- * Copyright 2020 SURFnet B.V.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-use Symfony\Component\Dotenv\Dotenv;
-
-require dirname(__DIR__).'/vendor/autoload.php';
-
-/**
- * Removed the dotenv parsing from this file to support the legacy parameters.yml config to prevent refactoring the configuration in Deploy
- * The original source could be found here:
- * https://github.com/symfony/recipes/blob/master/symfony/framework-bundle/4.2/config/bootstrap.php
- */
-
-$_SERVER += $_ENV;
-$_SERVER['APP_ENV'] = $_ENV['APP_ENV'] = ($_SERVER['APP_ENV'] ?? $_ENV['APP_ENV'] ?? null) ?: 'dev';
-$_SERVER['APP_DEBUG'] = $_SERVER['APP_DEBUG'] ?? $_ENV['APP_DEBUG'] ?? 'prod' !== $_SERVER['APP_ENV'];
-$_SERVER['APP_DEBUG'] = $_ENV['APP_DEBUG'] = (int) $_SERVER['APP_DEBUG'] || filter_var($_SERVER['APP_DEBUG'], FILTER_VALIDATE_BOOLEAN) ? '1' : '0';
diff --git a/symfony.lock b/symfony.lock
index 38c349297..9e48c3912 100644
--- a/symfony.lock
+++ b/symfony.lock
@@ -305,16 +305,15 @@
         "version": "v4.4.19"
     },
     "symfony/console": {
-        "version": "4.4",
+        "version": "6.3",
         "recipe": {
             "repo": "github.com/symfony/recipes",
-            "branch": "master",
-            "version": "4.4",
-            "ref": "ea8c0eda34fda57e7d5cd8cbd889e2a387e3472c"
+            "branch": "main",
+            "version": "5.3",
+            "ref": "da0c8be8157600ad34f10ff0c9cc91232522e047"
         },
         "files": [
-            "bin/console",
-            "config/bootstrap.php"
+            "bin/console"
         ]
     },
     "symfony/css-selector": {