diff --git a/_config.yml b/_config.yml
index f4a95d8..9d540e3 100644
--- a/_config.yml
+++ b/_config.yml
@@ -82,7 +82,7 @@ meta_generator: true
 date_format: YYYY-MM-DD
 time_format: HH:mm:ss
 ## updated_option supports 'mtime', 'date', 'empty'
-updated_option: 'date'
+updated_option: 'mtime'
 
 # Pagination
 ## Set per_page to 0 to disable pagination