diff --git a/composer-dependency-analyser.php b/composer-dependency-analyser.php
index bbe1286..1cc11c8 100644
--- a/composer-dependency-analyser.php
+++ b/composer-dependency-analyser.php
@@ -4,6 +4,8 @@
 use ShipMonk\ComposerDependencyAnalyser\Config\ErrorType;
 
 return (new Configuration())
+    ->ignoreUnknownClasses(['Haste\Util\StringUtil'])
+
     // Optional integrations
     ->ignoreErrorsOnPackage('dompdf/dompdf', [ErrorType::DEV_DEPENDENCY_IN_PROD])
     ->ignoreErrorsOnPackage('mpdf/mpdf', [ErrorType::DEV_DEPENDENCY_IN_PROD])
diff --git a/composer.json b/composer.json
index 2f4b005..c62d9e1 100644
--- a/composer.json
+++ b/composer.json
@@ -28,7 +28,7 @@
     "require": {
         "php": "^8.1",
         "contao/core-bundle": "^4.13 || ^5.0",
-        "codefog/contao-haste": "^5.0",
+        "codefog/contao-haste": "^4.25 || ^5.0",
         "menatwork/contao-multicolumnwizard-bundle": "^3.6",
         "phpoffice/phpspreadsheet": "^1.26 || ^2.0",
         "doctrine/dbal": "^3.0",
@@ -72,6 +72,7 @@
     "config": {
         "allow-plugins": {
             "contao-components/installer": false,
+            "contao-community-alliance/composer-plugin": false,
             "php-http/discovery": false,
             "contao/manager-plugin": false,
             "terminal42/contao-build-tools": true
diff --git a/phpstan.neon b/phpstan.neon
index bb824f6..9a3fe31 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -1,3 +1,4 @@
 parameters:
     ignoreErrors:
         - '#no value type specified in iterable type array#'
+        - '#unknown class Haste\\Util\\StringUtil#'
diff --git a/src/EventListener/DataContainer/LeadLabelListener.php b/src/EventListener/DataContainer/LeadLabelListener.php
index 44ded7b..6c98c9a 100644
--- a/src/EventListener/DataContainer/LeadLabelListener.php
+++ b/src/EventListener/DataContainer/LeadLabelListener.php
@@ -16,7 +16,7 @@ class LeadLabelListener
 {
     public function __construct(
         private readonly Connection $connection,
-        private readonly StringParser $stringParser,
+        private readonly StringParser|null $stringParser = null,
     ) {
     }
 
@@ -48,10 +48,18 @@ public function __invoke(array $row, string $label): string
         $values = $this->connection->fetchAllKeyValue('SELECT name, value FROM tl_lead_data WHERE pid=?', [$row['id']]);
 
         foreach ($values as $name => $value) {
-            $this->stringParser->flatten(StringUtil::deserialize($value), $name, $tokens);
+            if ($this->stringParser) {
+                $this->stringParser->flatten(StringUtil::deserialize($value), $name, $tokens);
+            } else {
+                \Haste\Util\StringUtil::flatten(StringUtil::deserialize($value), $name, $tokens);
+            }
         }
 
-        return $this->stringParser->recursiveReplaceTokensAndTags($lead['leadLabel'], $tokens);
+        if ($this->stringParser) {
+            return $this->stringParser->recursiveReplaceTokensAndTags($lead['leadLabel'], $tokens);
+        }
+
+        return \Haste\Util\StringUtil::recursiveReplaceTokensAndTags($lead['leadLabel'], $tokens);
     }
 
     private function formatToken(string $title, int|string $value): string
diff --git a/src/Export/AbstractExporter.php b/src/Export/AbstractExporter.php
index 12804e0..19263ea 100644
--- a/src/Export/AbstractExporter.php
+++ b/src/Export/AbstractExporter.php
@@ -34,7 +34,7 @@ public function __construct(
         private readonly ServiceLocator $formatters,
         private readonly Connection $connection,
         private readonly TranslatorInterface $translator,
-        private readonly StringParser $parser,
+        private readonly StringParser|null $parser,
         private readonly ExpressionLanguage|null $expressionLanguage = null,
     ) {
     }
@@ -308,9 +308,15 @@ protected function getColumns(): array
             $this->columns = [];
 
             foreach (StringUtil::deserialize($this->config['tokenFields'], true) as $config) {
+                if ($this->parser) {
+                    $value = fn ($lead) => $this->parser->recursiveReplaceTokensAndTags($config['tokensValue'], $this->getTokens($lead));
+                } else {
+                    $value = fn ($lead) => \Haste\Util\StringUtil::recursiveReplaceTokensAndTags($config['tokensValue'], $this->getTokens($lead));
+                }
+
                 $this->columns[] = [
                     'name' => $config['headerField'],
-                    'value' => fn ($lead) => $this->parser->recursiveReplaceTokensAndTags($config['tokensValue'], $this->getTokens($lead)),
+                    'value' => $value,
                     'label' => static fn () => '',
                     'output' => 'value',
                     'targetColumn' => $config['targetColumn'],
@@ -335,11 +341,19 @@ protected function getFilename(): string
             'datim' => Date::parse(Config::get('datimFormat')),
         ];
 
-        $filename = $this->parser->recursiveReplaceTokensAndTags(
-            $filename,
-            $tokens,
-            StringParser::NO_TAGS & StringParser::NO_BREAKS & StringParser::NO_ENTITIES,
-        );
+        if ($this->parser) {
+            $filename = $this->parser->recursiveReplaceTokensAndTags(
+                $filename,
+                $tokens,
+                StringParser::NO_TAGS & StringParser::NO_BREAKS & StringParser::NO_ENTITIES,
+            );
+        } else {
+            $filename = \Haste\Util\StringUtil::recursiveReplaceTokensAndTags(
+                $filename,
+                $tokens,
+                \Haste\Util\StringUtil::NO_TAGS & \Haste\Util\StringUtil::NO_BREAKS & \Haste\Util\StringUtil::NO_ENTITIES,
+            );
+        }
 
         if (!str_contains($filename, '.')) {
             return $filename.$this->getFileExtension();
@@ -391,7 +405,11 @@ protected function getTokens(array $lead): array
         ];
 
         foreach ($lead['data'] as $data) {
-            $this->parser->flatten(StringUtil::deserialize($data['value']), $data['name'], $tokens);
+            if ($this->parser) {
+                $this->parser->flatten(StringUtil::deserialize($data['value']), $data['name'], $tokens);
+            } else {
+                \Haste\Util\StringUtil::flatten(StringUtil::deserialize($data['value']), $data['name'], $tokens);
+            }
         }
 
         return $tokens;
diff --git a/src/Export/PhpSpreadsheetExporter.php b/src/Export/PhpSpreadsheetExporter.php
index 25c8e33..5f6a413 100644
--- a/src/Export/PhpSpreadsheetExporter.php
+++ b/src/Export/PhpSpreadsheetExporter.php
@@ -31,7 +31,7 @@ public function __construct(
         ServiceLocator $formatters,
         Connection $connection,
         TranslatorInterface $translator,
-        StringParser $parser,
+        StringParser|null $parser = null,
         ExpressionLanguage|null $expressionLanguage = null,
     ) {
         parent::__construct($formatters, $connection, $translator, $parser, $expressionLanguage);