diff --git a/composer.json b/composer.json
index 1a37d45..f942628 100644
--- a/composer.json
+++ b/composer.json
@@ -19,7 +19,7 @@
 
   "require": {
     "php": ">=5.4.0",
-    "symfony/framework-bundle": "^2.6|^3.0|^4.0",
+    "symfony/framework-bundle": "^2.6|^3.0|^4.0|^5.0",
     "doctrine/orm": "^2.4"
   },
 
@@ -28,7 +28,7 @@
     "ext-pdo": "*",
     "ext-pdo_sqlite": "*",
 
-    "symfony/symfony": "^3.0|^4.0",
+    "symfony/symfony": "^3.0|^4.0|^5.0",
     "doctrine/orm": "^2.5",
     "doctrine/doctrine-bundle": "^1.6",
     "doctrine/doctrine-fixtures-bundle": "^2.2",
diff --git a/src/DataDog/AuditBundle/DependencyInjection/Configuration.php b/src/DataDog/AuditBundle/DependencyInjection/Configuration.php
index 447df0f..0c09e7b 100644
--- a/src/DataDog/AuditBundle/DependencyInjection/Configuration.php
+++ b/src/DataDog/AuditBundle/DependencyInjection/Configuration.php
@@ -17,8 +17,9 @@ class Configuration implements ConfigurationInterface
      */
     public function getConfigTreeBuilder()
     {
-        $treeBuilder = new TreeBuilder();
-        $rootNode = $treeBuilder->root('data_dog_audit');
+        $treeBuilder = new TreeBuilder('data_dog_audit');
+        // BC layer for symfony/config < 4.2
+        $rootNode = method_exists($treeBuilder, 'getRootNode') ? $treeBuilder->getRootNode() : $treeBuilder->root('data_dog_audit');
 
         $rootNode
             ->children()