diff --git a/src/i18n/locales/ja.json b/src/i18n/locales/ja.json
index 0967ef42..c5e29481 100644
--- a/src/i18n/locales/ja.json
+++ b/src/i18n/locales/ja.json
@@ -1 +1,8 @@
-{}
+{
+  "tabname": "新しいタブ",
+  "widgets": {
+    "greeting": {
+      "christmas": "メリークリスマス"
+    }
+  }
+}