diff --git a/mkdocs.yml b/mkdocs.yml
index e9185cd..f095540 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -21,6 +21,7 @@ theme:
     - navigation.indexes
     - navigation.instant
     - navigation.tabs
+    - search.highlight
 repo_url: https://git.ducamps.win/vincent/notebook
 repo_name: Vincent/notebook
 extra: