diff --git a/backend/composer.json b/backend/composer.json
index 5d78030..7a91c8c 100644
--- a/backend/composer.json
+++ b/backend/composer.json
@@ -7,7 +7,7 @@
         "php": ">=8.2",
         "ext-ctype": "*",
         "ext-iconv": "*",
-        "doctrine/dbal": "^3",
+        "doctrine/dbal": "^4",
         "doctrine/doctrine-bundle": "^2.11",
         "doctrine/doctrine-migrations-bundle": "^3.3",
         "doctrine/orm": "^3.1",
diff --git a/backend/composer.lock b/backend/composer.lock
index 30e814c..d29b95c 100644
--- a/backend/composer.lock
+++ b/backend/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": "ddb3f6629f56d9ea00c1ddc49f307b96",
+    "content-hash": "7625b419e03ef04f65b2d63e5c05dc08",
     "packages": [
         {
             "name": "composer/semver",
@@ -268,47 +268,42 @@
         },
         {
             "name": "doctrine/dbal",
-            "version": "3.8.3",
+            "version": "4.0.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/doctrine/dbal.git",
-                "reference": "db922ba9436b7b18a23d1653a0b41ff2369ca41c"
+                "reference": "9e588fe1f38a443cb17de6b86b803d9e028e2156"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/doctrine/dbal/zipball/db922ba9436b7b18a23d1653a0b41ff2369ca41c",
-                "reference": "db922ba9436b7b18a23d1653a0b41ff2369ca41c",
+                "url": "https://api.github.com/repos/doctrine/dbal/zipball/9e588fe1f38a443cb17de6b86b803d9e028e2156",
+                "reference": "9e588fe1f38a443cb17de6b86b803d9e028e2156",
                 "shasum": ""
             },
             "require": {
-                "composer-runtime-api": "^2",
-                "doctrine/cache": "^1.11|^2.0",
                 "doctrine/deprecations": "^0.5.3|^1",
-                "doctrine/event-manager": "^1|^2",
-                "php": "^7.4 || ^8.0",
+                "php": "^8.1",
                 "psr/cache": "^1|^2|^3",
                 "psr/log": "^1|^2|^3"
             },
             "require-dev": {
                 "doctrine/coding-standard": "12.0.0",
                 "fig/log-test": "^1",
-                "jetbrains/phpstorm-stubs": "2023.1",
+                "jetbrains/phpstorm-stubs": "2023.2",
                 "phpstan/phpstan": "1.10.58",
+                "phpstan/phpstan-phpunit": "1.3.15",
                 "phpstan/phpstan-strict-rules": "^1.5",
-                "phpunit/phpunit": "9.6.16",
+                "phpunit/phpunit": "10.5.9",
                 "psalm/plugin-phpunit": "0.18.4",
                 "slevomat/coding-standard": "8.13.1",
                 "squizlabs/php_codesniffer": "3.9.0",
-                "symfony/cache": "^5.4|^6.0|^7.0",
-                "symfony/console": "^4.4|^5.4|^6.0|^7.0",
-                "vimeo/psalm": "4.30.0"
+                "symfony/cache": "^6.3.8|^7.0",
+                "symfony/console": "^5.4|^6.3|^7.0",
+                "vimeo/psalm": "5.21.1"
             },
             "suggest": {
                 "symfony/console": "For helpful console commands such as SQL execution and import of files."
             },
-            "bin": [
-                "bin/doctrine-dbal"
-            ],
             "type": "library",
             "autoload": {
                 "psr-4": {
@@ -361,7 +356,7 @@
             ],
             "support": {
                 "issues": "https://github.com/doctrine/dbal/issues",
-                "source": "https://github.com/doctrine/dbal/tree/3.8.3"
+                "source": "https://github.com/doctrine/dbal/tree/4.0.1"
             },
             "funding": [
                 {
@@ -377,7 +372,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2024-03-03T15:55:06+00:00"
+            "time": "2024-03-03T15:59:11+00:00"
         },
         {
             "name": "doctrine/deprecations",