diff --git a/_config.yml b/_config.yml
index 9ca0189..eae675a 100644
--- a/_config.yml
+++ b/_config.yml
@@ -51,6 +51,11 @@ highlight:
   tab_replace: ''
   wrap: true
   hljs: false
+prismjs:
+  enable: false
+  preprocess: true
+  line_number: true
+  tab_replace: ''
 
 # Home page setting
 # path: Root path for your blogs index page. (default = '')
@@ -76,8 +81,8 @@ meta_generator: true
 ## http://momentjs.com/docs/#/displaying/format/
 date_format: YYYY-MM-DD
 time_format: HH:mm:ss
-## Use post's date for updated date unless set in front-matter
-use_date_for_updated: false
+## updated_option supports 'mtime', 'date', 'empty'
+updated_option: 'mtime'
 
 # Pagination
 ## Set per_page to 0 to disable pagination