diff --git a/mozilla/calendar/locales/all-locales b/mozilla/calendar/locales/all-locales
index 62d9bfbe81e..f95182e5246 100644
--- a/mozilla/calendar/locales/all-locales
+++ b/mozilla/calendar/locales/all-locales
@@ -2,6 +2,7 @@ ca
 cs
 da
 de
+es-AR
 es-ES
 eu
 fr
diff --git a/mozilla/calendar/locales/shipped-locales b/mozilla/calendar/locales/shipped-locales
index 63b5035ae7d..07a4e7b4def 100644
--- a/mozilla/calendar/locales/shipped-locales
+++ b/mozilla/calendar/locales/shipped-locales
@@ -2,6 +2,7 @@ ca
 cs
 da
 de
+es-AR
 es-ES
 eu
 fr