diff --git a/_config.yml b/_config.yml
index c4eae0c5..82b0db6e 100644
--- a/_config.yml
+++ b/_config.yml
@@ -12,4 +12,5 @@ kramdown:
   hard_wrap: true
 
 plugins:
+  - jekyll-last-modified-at
   - jekyll-sitemap
\ No newline at end of file