diff --git a/Behat/Context/Console/ApplicationTester.php b/Behat/Context/Console/ApplicationTester.php
index afd981c..b925f52 100644
--- a/Behat/Context/Console/ApplicationTester.php
+++ b/Behat/Context/Console/ApplicationTester.php
@@ -74,7 +74,6 @@ public function getDisplay(bool $normalize = false): string
         if ($normalize) {
             $display = str_replace(PHP_EOL, "\n", $display);
         }
-        Assertion::string($display);
 
         return $display;
     }
diff --git a/Behat/Fixtures/Project/app/config/config_test.yml b/Behat/Fixtures/Project/app/config/config_test.yml
index 5f2e0d5..afb57eb 100644
--- a/Behat/Fixtures/Project/app/config/config_test.yml
+++ b/Behat/Fixtures/Project/app/config/config_test.yml
@@ -20,7 +20,6 @@ doctrine:
         memory: true
 
     orm:
-        auto_generate_proxy_classes: '%kernel.debug%'
         auto_mapping: true
 
 fsi_teryt_db:
diff --git a/Teryt/Api/WSASoap.php b/Teryt/Api/WSASoap.php
index dc829f7..48dfa12 100644
--- a/Teryt/Api/WSASoap.php
+++ b/Teryt/Api/WSASoap.php
@@ -85,7 +85,7 @@ private function locateHeader(): DOMNode
             $headers = $this->SOAPXPath->query('//wssoap:Envelope/wssoap:Header');
             Assertion::isInstanceOf($headers, DOMNodeList::class);
             $header = $headers->item(0);
-            if (!$header) {
+            if (false === $header instanceof DOMNode) {
                 $header = $this->soapDoc->createElementNS($this->soapNS, $this->soapPFX . ':Header');
                 Assertion::isInstanceOf($header, DOMNode::class);
                 $this->envelope->insertBefore($header, $this->envelope->firstChild);
diff --git a/Xml/Parser.php b/Xml/Parser.php
index 83cda6d..a26cf02 100644
--- a/Xml/Parser.php
+++ b/Xml/Parser.php
@@ -59,11 +59,6 @@ public function parse(mixed $data, int $chunkSize = 1024): self
             throw new Exception('Data must be a string or a stream resource');
         }
 
-        //Ensure $chunkSize is the right type
-        if (!is_int($chunkSize)) {
-            throw new Exception('Chunk size must be an integer');
-        }
-
         //Initialise the object
         $this->init();
 
diff --git a/composer.json b/composer.json
index 2058b89..14f2c6f 100644
--- a/composer.json
+++ b/composer.json
@@ -20,7 +20,7 @@
         "symfony/console": "^5.4|^6.4|^7.0",
         "symfony/dom-crawler": "^5.4|^6.4|^7.0",
         "symfony/css-selector": "^5.4|^6.4|^7.0",
-        "doctrine/persistence": "^2.0|^3.0",
+        "doctrine/persistence": "^2.0|^3.0|^4.0",
         "doctrine/doctrine-fixtures-bundle": "^3.4|^4.0",
         "robrichards/wse-php": "^2.0",
         "robrichards/xmlseclibs": "^3.0"
@@ -31,23 +31,26 @@
         "behat/behat": "^3.3",
         "behat/mink-browserkit-driver": "^2.0",
         "doctrine/collections": "^1.7|^2.0",
-        "doctrine/dbal": "^2.13.4|^3.0",
+        "doctrine/dbal": "^2.13.4|^3.0|^4.0",
         "doctrine/doctrine-bundle": "^2.1|^3.0",
-        "doctrine/orm": "^2.8",
+        "doctrine/orm": "^2.8|^3.0",
         "friends-of-behat/mink-extension": "^2.0",
         "friends-of-behat/symfony-extension": "^2.4",
         "phpspec/phpspec": "^5.0|^6.0|^7.0|^8.0",
-        "phpstan/phpstan": "^1.0",
-        "phpstan/phpstan-beberlei-assert": "^1.1",
-        "phpstan/phpstan-doctrine": "^1.0",
-        "phpstan/phpstan-symfony": "^1.3",
-        "squizlabs/php_codesniffer": "^3.7",
-        "symfony/proxy-manager-bridge": "^4.4.19|^5.4|^6.4|^7.0"
+        "phpstan/phpstan": "^2.1",
+        "phpstan/phpstan-beberlei-assert": "^2.0",
+        "phpstan/phpstan-doctrine": "^2.0",
+        "phpstan/phpstan-symfony": "^2.0",
+        "squizlabs/php_codesniffer": "^4.0",
+        "symfony/proxy-manager-bridge": "^5.4|^6.4|^7.0"
     },
     "config": {
         "bin-dir": "vendor/bin",
         "sort-packages": true
     },
+    "conflict": {
+        "symfony/var-exporter": ">=8.0"
+    },
     "autoload": {
         "psr-4": { "FSi\\Bundle\\TerytDatabaseBundle\\": "" }
     },