diff --git a/docs/_config.yml b/docs/_config.yml
index 0e349390ae..a2b8fba679 100644
--- a/docs/_config.yml
+++ b/docs/_config.yml
@@ -13,7 +13,7 @@ images:                /assets/images/
 
 # Rouge highlighter
 markdown: kramdown
-highlighter: none
+highlighter: rouge
 
 kramdown:
   parse_block_html: true