diff --git a/exampleSite/config/_default/languages.ja.toml b/exampleSite/config/_default/languages.ja.toml
index 0365aecb..9eeaa961 100644
--- a/exampleSite/config/_default/languages.ja.toml
+++ b/exampleSite/config/_default/languages.ja.toml
@@ -7,7 +7,7 @@ title = "Blowfish"
   displayName = "日本語"
   isoCode = "ja"
   rtl = false
-  dateFormat = "2 January 2006"
+  dateFormat = "2006-01-02"
   logo = "img/blowfish_logo_transparent.png"
   description = "強力で、軽量な Hugo のテーマです。"