diff --git a/_config.yml b/_config.yml
index 6f3279b..95b7bc8 100644
--- a/_config.yml
+++ b/_config.yml
@@ -24,7 +24,7 @@ basewebsite: /EfficientML
 ### let's use the minima theme (see https://github.com/jekyll/minima)
 theme: minima
 
-
+permalink: /:categories/:title:output_ext
 
 
 # math engine with katex in case you want to do complex configuration