diff --git a/Classes/Core/Functional/Framework/DataHandling/ActionService.php b/Classes/Core/Functional/Framework/DataHandling/ActionService.php
index b2e7274d..dc541b61 100644
--- a/Classes/Core/Functional/Framework/DataHandling/ActionService.php
+++ b/Classes/Core/Functional/Framework/DataHandling/ActionService.php
@@ -17,6 +17,7 @@
  */
 
 use TYPO3\CMS\Core\Authentication\BackendUserAuthentication;
+use TYPO3\CMS\Core\Database\Connection;
 use TYPO3\CMS\Core\Database\ConnectionPool;
 use TYPO3\CMS\Core\Database\Query\Restriction\DeletedRestriction;
 use TYPO3\CMS\Core\DataHandling\DataHandler;
@@ -539,11 +540,11 @@ protected function getVersionedId(string $tableName, $liveUid)
             ->where(
                 $queryBuilder->expr()->eq(
                     't3ver_oid',
-                    $queryBuilder->createNamedParameter($liveUid, \PDO::PARAM_INT)
+                    $queryBuilder->createNamedParameter($liveUid, Connection::PARAM_INT)
                 ),
                 $queryBuilder->expr()->eq(
                     't3ver_wsid',
-                    $queryBuilder->createNamedParameter($workspaceId, \PDO::PARAM_INT)
+                    $queryBuilder->createNamedParameter($workspaceId, Connection::PARAM_INT)
                 )
             )
             ->executeQuery();
@@ -563,19 +564,19 @@ protected function getVersionedId(string $tableName, $liveUid)
             ->where(
                 $queryBuilder->expr()->eq(
                     'uid',
-                    $queryBuilder->createNamedParameter($liveUid, \PDO::PARAM_INT)
+                    $queryBuilder->createNamedParameter($liveUid, Connection::PARAM_INT)
                 ),
                 $queryBuilder->expr()->eq(
                     't3ver_wsid',
-                    $queryBuilder->createNamedParameter($workspaceId, \PDO::PARAM_INT)
+                    $queryBuilder->createNamedParameter($workspaceId, Connection::PARAM_INT)
                 ),
                 $queryBuilder->expr()->eq(
                     't3ver_oid',
-                    $queryBuilder->createNamedParameter(0, \PDO::PARAM_INT)
+                    $queryBuilder->createNamedParameter(0, Connection::PARAM_INT)
                 ),
                 $queryBuilder->expr()->eq(
                     't3ver_state',
-                    $queryBuilder->createNamedParameter(1, \PDO::PARAM_INT)
+                    $queryBuilder->createNamedParameter(1, Connection::PARAM_INT)
                 )
             )
             ->executeQuery();
diff --git a/Classes/Core/Functional/FunctionalTestCase.php b/Classes/Core/Functional/FunctionalTestCase.php
index e861fabf..c9e31804 100644
--- a/Classes/Core/Functional/FunctionalTestCase.php
+++ b/Classes/Core/Functional/FunctionalTestCase.php
@@ -32,6 +32,7 @@
 use TYPO3\CMS\Core\Core\Bootstrap;
 use TYPO3\CMS\Core\Core\ClassLoadingInformation;
 use TYPO3\CMS\Core\Core\Environment;
+use TYPO3\CMS\Core\Database\Connection;
 use TYPO3\CMS\Core\Database\ConnectionPool;
 use TYPO3\CMS\Core\Http\NormalizedParams;
 use TYPO3\CMS\Core\Http\ServerRequest;
@@ -603,7 +604,7 @@ protected function getBackendUserRecordFromDatabase(int $userId): ?array
 
         $result = $queryBuilder->select('*')
             ->from('be_users')
-            ->where($queryBuilder->expr()->eq('uid', $queryBuilder->createNamedParameter($userId, \PDO::PARAM_INT)))
+            ->where($queryBuilder->expr()->eq('uid', $queryBuilder->createNamedParameter($userId, Connection::PARAM_INT)))
             ->executeQuery();
         return $result->fetchAssociative() ?: null;
     }
diff --git a/composer.json b/composer.json
index 9a2fb27c..c763c0dc 100644
--- a/composer.json
+++ b/composer.json
@@ -26,7 +26,6 @@
   },
   "require": {
     "php": ">= 7.4",
-    "ext-pdo": "*",
     "guzzlehttp/psr7": "^2.4.3",
     "phpunit/phpunit": "^9.5.25 || ^10.1",
     "psr/container": "^1.1.0 || ^2.0.0",