diff --git a/.travis.yml b/.travis.yml
index 2b4e185..1529e77 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -26,9 +26,9 @@ matrix:
           dist: trusty
           env: SYMFONY_VERSION=3.4.*
         - php: 7.1
-          env: SYMFONY_VERSION=4.2.* PHPUNIT_VERSION=5.7.*
-        - php: 7.1
-          env: SYMFONY_VERSION=4.3.* PHPUNIT_VERSION=5.7.*
+          env: SYMFONY_VERSION=4.4.* PHPUNIT_VERSION=6.5.*
+        - php: 7.2
+          env: SYMFONY_VERSION=5.0.* PHPUNIT_VERSION=6.5.*
         - php: 5.5
           dist: trusty
           env: DOCTRINE_VERSION=2.5.*
diff --git a/src/DependencyInjection/Configuration.php b/src/DependencyInjection/Configuration.php
index d1c2310..53ea836 100644
--- a/src/DependencyInjection/Configuration.php
+++ b/src/DependencyInjection/Configuration.php
@@ -9,6 +9,7 @@
 
 namespace GpsLab\Bundle\DomainEvent\DependencyInjection;
 
+use Symfony\Component\Config\Definition\Builder\ArrayNodeDefinition;
 use Symfony\Component\Config\Definition\Builder\TreeBuilder;
 use Symfony\Component\Config\Definition\ConfigurationInterface;
 
@@ -28,26 +29,62 @@ class Configuration implements ConfigurationInterface
      */
     public function getConfigTreeBuilder()
     {
-        return (new TreeBuilder())
-            ->root('gpslab_domain_event')
-                ->children()
-                    ->scalarNode('bus')
-                        ->cannotBeEmpty()
-                        ->defaultValue('listener_located')
-                    ->end()
-                    ->scalarNode('queue')
-                        ->cannotBeEmpty()
-                        ->defaultValue('pull_memory')
-                    ->end()
-                    ->scalarNode('locator')
-                        ->cannotBeEmpty()
-                        ->defaultValue('symfony')
-                    ->end()
-                    ->booleanNode('publish_on_flush')
-                        ->defaultValue(false)
-                    ->end()
-                ->end()
-            ->end()
-        ;
+        $tree_builder = $this->createTreeBuilder('gpslab_domain_event');
+        $root = $this->getRootNode($tree_builder, 'gpslab_domain_event');
+
+        $bus = $root->children()->scalarNode('bus');
+        $bus->cannotBeEmpty()->defaultValue('listener_located');
+
+        $queue = $root->children()->scalarNode('queue');
+        $queue->cannotBeEmpty()->defaultValue('pull_memory');
+
+        $locator = $root->children()->scalarNode('locator');
+        $locator->cannotBeEmpty()->defaultValue('symfony');
+
+        $publish_on_flush = $root->children()->booleanNode('publish_on_flush');
+        $publish_on_flush->defaultValue(false);
+
+        return $tree_builder;
+    }
+
+    /**
+     * @param string $name
+     *
+     * @return TreeBuilder
+     */
+    private function createTreeBuilder($name)
+    {
+        // Symfony 4.2 +
+        if (method_exists(TreeBuilder::class, '__construct')) {
+            return new TreeBuilder($name);
+        }
+
+        // Symfony 4.1 and below
+        return new TreeBuilder();
+    }
+
+    /**
+     * @param TreeBuilder $tree_builder
+     * @param string      $name
+     *
+     * @return ArrayNodeDefinition
+     */
+    private function getRootNode(TreeBuilder $tree_builder, $name)
+    {
+        if (method_exists($tree_builder, 'getRootNode')) {
+            // Symfony 4.2 +
+            $root = $tree_builder->getRootNode();
+        } else {
+            // Symfony 4.1 and below
+            $root = $tree_builder->root($name);
+        }
+
+        // @codeCoverageIgnoreStart
+        if (!($root instanceof ArrayNodeDefinition)) { // should be always false
+            throw new \RuntimeException(sprintf('The root node should be instance of %s, got %s instead.', ArrayNodeDefinition::class, get_class($root)));
+        }
+        // @codeCoverageIgnoreEnd
+
+        return $root;
     }
 }