diff --git a/mkdocs.yml b/mkdocs.yml
index 0f20342c..d2422fde 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -81,6 +81,7 @@ markdown_extensions:
   - pymdownx.details
   - pymdownx.arithmatex:
       generic: true
+  - footnotes
 
 plugins:
   # the privacy plugin will bundle external assets (like Google Fonts)