diff --git a/_config.yml b/_config.yml
index 3f2e05a..8a70d9d 100644
--- a/_config.yml
+++ b/_config.yml
@@ -1,3 +1,11 @@
+plugins:
+  - jekyll-last-modified-at
+
+open_external_links_in_new_tab: true
+use_html_extension: false
+permalink: pretty
+relative_permalinks: false
+
 collections:
   notes:
     output: true