diff --git a/config/services.yaml b/config/services.yaml
index 0389c24..c67634b 100644
--- a/config/services.yaml
+++ b/config/services.yaml
@@ -4,7 +4,7 @@
 # Put parameters here that don't need to change on each machine where the app is deployed
 # https://symfony.com/doc/current/best_practices/configuration.html#application-related-configuration
 parameters:
-    allowed_language: "fr|en|nl|pt-PT|pt-BR|de|ar|it|ca"
+    allowed_language: "fr|en|nl|pt-PT|pt-BR|de|ar|it|ca|ja"
     languages: "(%allowed_language%)?"
 services:
     # default configuration for services in *this* file
diff --git a/templates/nav.html.twig b/templates/nav.html.twig
index d0ef68c..010173d 100644
--- a/templates/nav.html.twig
+++ b/templates/nav.html.twig
@@ -53,6 +53,7 @@
                         <a class="dropdown-item"  href="{{ path(route, {'_locale':'pt-PT' }) }}">Português</a>
                         <a class="dropdown-item"  href="{{ path(route, {'_locale':'pt-BR' }) }}">Brasil</a>
                         <a class="dropdown-item"  href="{{ path(route, {'_locale':'ca' }) }}">Català</a>
+                        <a class="dropdown-item"  href="{{ path(route, {'_locale':'ja' }) }}">日本語</a>
                     </div>
                 </li>
             </ul>