diff --git a/docs/en/mkdocs.yml b/docs/en/mkdocs.yml
index 66094c81e..a62be7fe9 100644
--- a/docs/en/mkdocs.yml
+++ b/docs/en/mkdocs.yml
@@ -317,6 +317,8 @@ extra:
     name: de - Deutsch
   - link: /es/
     name: es - español
+  - link: /ja/
+    name: ja - 日本語
   - link: /pt/
     name: pt - português
   - link: /ru/
diff --git a/scripts/docs.py b/scripts/docs.py
index fbde1eca4..e3055355f 100644
--- a/scripts/docs.py
+++ b/scripts/docs.py
@@ -23,6 +23,7 @@ SUPPORTED_LANGS = {
     "en",
     "de",
     "es",
+    "ja",
     "pt",
     "ru",
 }