diff --git a/docs/mkdocs.yml b/docs/mkdocs.yml
index 4a490c06b..5b04cc406 100644
--- a/docs/mkdocs.yml
+++ b/docs/mkdocs.yml
@@ -59,6 +59,7 @@ markdown_extensions:
       emoji_index: !!python/name:materialx.emoji.twemoji
       emoji_generator: !!python/name:materialx.emoji.to_svg
   - attr_list
+  - footnotes
 theme:
   name: 'material'
   language: en