diff --git a/config/_default/config.toml b/config/_default/config.toml
index e87f31d..e7f00eb 100644
--- a/config/_default/config.toml
+++ b/config/_default/config.toml
@@ -1,7 +1,9 @@
 baseurl = "https://blog.kazu634.com/"
 title = "His greatness lies in his sense of responsibility"
+DefaultContentLanguage = "ja"
 languageCode = "ja"
 theme = "angels-ladder"
+HasCJKLanguage = true
 
 [params]
   subtitle = "named after the quotation from Wind, Sand, and Stars by Saint Exupery."
diff --git a/config/staging/config.toml b/config/staging/config.toml
index da49e6a..8f4ba4b 100644
--- a/config/staging/config.toml
+++ b/config/staging/config.toml
@@ -1,7 +1,9 @@
 baseurl = "http://test.kazu634.com/"
 title = "His greatness lies in his sense of responsibility"
+DefaultContentLanguage = "jp"
 languageCode = "ja"
 theme = "angels-ladder"
+HasCJKLanguage = true
 
 [params]
   subtitle = "named after the quotation from Wind, Sand, and Stars by Saint Exupery."