diff --git a/src/locales/ja.json b/src/locales/ja.json
index 0967ef4..ee784da 100644
--- a/src/locales/ja.json
+++ b/src/locales/ja.json
@@ -1 +1,5 @@
-{}
+{
+  "input": {
+    "ctrl": "CTRL"
+  }
+}