diff --git a/src/DependencyInjection/Configuration.php b/src/DependencyInjection/Configuration.php
index d5f65ed..e417f22 100755
--- a/src/DependencyInjection/Configuration.php
+++ b/src/DependencyInjection/Configuration.php
@@ -32,9 +32,14 @@ class Configuration implements ConfigurationInterface
 {
     public function getConfigTreeBuilder()
     {
-        $treeBuilder = new TreeBuilder();
-        $rootNode    = $treeBuilder->root('uecode_qpush');
-
+        $treeBuilder = new TreeBuilder('uecode_qpush');
+        if (\method_exists($treeBuilder, 'getRootNode')) {
+            $rootNode = $treeBuilder->getRootNode();
+        } else {
+            // BC layer for symfony/config 4.1 and older
+            $rootNode = $treeBuilder->root('uecode_qpush');
+        }
+        
         $rootNode
             ->addDefaultsIfNotSet()
             ->children()
@@ -54,8 +59,14 @@ public function getConfigTreeBuilder()
 
     private function getProvidersNode()
     {
-        $treeBuilder    = new TreeBuilder();
-        $node           = $treeBuilder->root('providers');
+        $treeBuilder = new TreeBuilder('providers');
+        if (\method_exists($treeBuilder, 'getRootNode')) {
+            $node = $treeBuilder->getRootNode();
+        } else {
+            // BC layer for symfony/config 4.1 and older
+            $node = $treeBuilder->root('providers');
+        }
+        
         $requirements   = [
             'aws' => [],
             'ironmq' => ['token', 'project_id'],
@@ -126,9 +137,14 @@ private function getProvidersNode()
 
     private function getQueuesNode()
     {
-        $treeBuilder = new TreeBuilder();
-        $node        = $treeBuilder->root('queues');
-
+        $treeBuilder = new TreeBuilder('queues');
+        if (\method_exists($treeBuilder, 'getRootNode')) {
+            $node = $treeBuilder->getRootNode();
+        } else {
+            // BC layer for symfony/config 4.1 and older
+            $node = $treeBuilder->root('queues');
+        }
+        
         $node
             ->requiresAtLeastOneElement()
             ->useAttributeAsKey('name')
@@ -213,9 +229,14 @@ private function getQueuesNode()
 
     private function getSubscribersNode()
     {
-        $treeBuilder = new TreeBuilder();
-        $node        = $treeBuilder->root('subscribers');
-
+        $treeBuilder = new TreeBuilder('subscribers');
+        if (\method_exists($treeBuilder, 'getRootNode')) {
+            $node = $treeBuilder->getRootNode();
+        } else {
+            // BC layer for symfony/config 4.1 and older
+            $node = $treeBuilder->root('subscribers');
+        }
+        
         $node
             ->prototype('array')
                 ->children()