diff --git a/DependencyInjection/Configuration.php b/DependencyInjection/Configuration.php
index 7c2e89d0..e03fe2c0 100644
--- a/DependencyInjection/Configuration.php
+++ b/DependencyInjection/Configuration.php
@@ -17,9 +17,16 @@ class Configuration implements ConfigurationInterface
      */
     public function getConfigTreeBuilder()
     {
-        $builder = new TreeBuilder();
+        $treeBuilder = new TreeBuilder('bazinga_js_translation');
 
-        $builder->root('bazinga_js_translation')
+        if (method_exists($treeBuilder, 'getRootNode')) {
+            $rootNode = $treeBuilder->getRootNode();
+        } else {
+            // BC layer for symfony/config 4.1 and older
+            $rootNode = $treeBuilder->root('bazinga_js_translation');
+        }
+
+        $rootNode
             ->fixXmlConfig('active_locale')
             ->fixXmlConfig('active_domain')
             ->children()
@@ -36,6 +43,6 @@ public function getConfigTreeBuilder()
                 ->end()
             ->end();
 
-        return $builder;
+        return $treeBuilder;
     }
 }
diff --git a/Tests/Fixtures/app/AppKernel.php b/Tests/Fixtures/app/AppKernel.php
index 6904d4f8..e720410b 100644
--- a/Tests/Fixtures/app/AppKernel.php
+++ b/Tests/Fixtures/app/AppKernel.php
@@ -49,6 +49,11 @@ public function getRootDir()
         return __DIR__;
     }
 
+    public function getProjectDir()
+    {
+        return __DIR__.'/../';
+    }
+
     public function getCacheDir()
     {
         return sys_get_temp_dir().'/'.Kernel::VERSION.'/bazinga-js-translation/cache/'.$this->environment;
@@ -70,6 +75,10 @@ public function registerContainerConfiguration(LoaderInterface $loader)
         if (self::VERSION_ID > 30200) {
             $loader->load(__DIR__.'/config/disable_annotations.yml');
         }
+
+        if (self::VERSION_ID < 40200 && file_exists(__DIR__.'/Resources/translations') === false) {
+            self::recurseCopy(__DIR__.'/../translations', __DIR__.'/Resources/translations');
+        }
     }
 
     public function serialize()
@@ -81,4 +90,21 @@ public function unserialize($str)
     {
         call_user_func_array(array($this, '__construct'), unserialize($str));
     }
+
+    private static function recurseCopy($src, $dst)
+    {
+        $dir = opendir($src);
+        @mkdir($dst, 0777, true);
+        while (false !== ($file = readdir($dir))) {
+            if (($file !== '.') && ($file !== '..')) {
+                if (is_dir($src.'/'.$file)) {
+                    self::recurseCopy($src.'/'.$file, $dst.'/'.$file);
+                } else {
+                    copy($src.'/'.$file, $dst.'/'.$file);
+                }
+            }
+        }
+
+        closedir($dir);
+    }
 }
diff --git a/Tests/Fixtures/app/Resources/translations/foo.en.yml b/Tests/Fixtures/translations/foo.en.yml
similarity index 100%
rename from Tests/Fixtures/app/Resources/translations/foo.en.yml
rename to Tests/Fixtures/translations/foo.en.yml
diff --git a/Tests/Fixtures/app/Resources/translations/front.en.yml b/Tests/Fixtures/translations/front.en.yml
similarity index 100%
rename from Tests/Fixtures/app/Resources/translations/front.en.yml
rename to Tests/Fixtures/translations/front.en.yml
diff --git a/Tests/Fixtures/app/Resources/translations/front.fr.yml b/Tests/Fixtures/translations/front.fr.yml
similarity index 100%
rename from Tests/Fixtures/app/Resources/translations/front.fr.yml
rename to Tests/Fixtures/translations/front.fr.yml
diff --git a/Tests/Fixtures/app/Resources/translations/messages.ach_UG.yml b/Tests/Fixtures/translations/messages.ach_UG.yml
similarity index 100%
rename from Tests/Fixtures/app/Resources/translations/messages.ach_UG.yml
rename to Tests/Fixtures/translations/messages.ach_UG.yml
diff --git a/Tests/Fixtures/app/Resources/translations/messages.en.yml b/Tests/Fixtures/translations/messages.en.yml
similarity index 100%
rename from Tests/Fixtures/app/Resources/translations/messages.en.yml
rename to Tests/Fixtures/translations/messages.en.yml
diff --git a/Tests/Fixtures/app/Resources/translations/messages.es.yml b/Tests/Fixtures/translations/messages.es.yml
similarity index 100%
rename from Tests/Fixtures/app/Resources/translations/messages.es.yml
rename to Tests/Fixtures/translations/messages.es.yml
diff --git a/Tests/Fixtures/app/Resources/translations/messages.fr.yml b/Tests/Fixtures/translations/messages.fr.yml
similarity index 100%
rename from Tests/Fixtures/app/Resources/translations/messages.fr.yml
rename to Tests/Fixtures/translations/messages.fr.yml
diff --git a/Tests/Fixtures/app/Resources/translations/numerics.en.xliff b/Tests/Fixtures/translations/numerics.en.xliff
similarity index 100%
rename from Tests/Fixtures/app/Resources/translations/numerics.en.xliff
rename to Tests/Fixtures/translations/numerics.en.xliff
diff --git a/Tests/Fixtures/app/Resources/translations/numerics.fr.xliff b/Tests/Fixtures/translations/numerics.fr.xliff
similarity index 100%
rename from Tests/Fixtures/app/Resources/translations/numerics.fr.xliff
rename to Tests/Fixtures/translations/numerics.fr.xliff