diff --git a/locales/es.yml b/locales/es.yml
index 030905be0..f6d0a281f 100644
--- a/locales/es.yml
+++ b/locales/es.yml
@@ -34,6 +34,14 @@ common:
     thursday: "jueves"
     friday: "viernes"
     saturday: "sábado"
+  weekday:
+    sunday: "日曜日"
+    monday: "月曜日"
+    tuesday: "火曜日"
+    wednesday: "水曜日"
+    thursday: "木曜日"
+    friday: "金曜日"
+    saturday: "土曜日"
   reactions:
     like: "me gusta"
     love: "amor"