diff --git a/contrib/mkdocs/mkdocs.yml b/contrib/mkdocs/mkdocs.yml
index ed0b290392..0b127027f1 100644
--- a/contrib/mkdocs/mkdocs.yml
+++ b/contrib/mkdocs/mkdocs.yml
@@ -64,6 +64,8 @@ markdown_extensions:
     - mdx_math:
         enable_dollar_delimiter: True
     - pymdownx.tilde
+    - attr_list
+    - md_in_html
 extra_javascript:
   - https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js?config=TeX-AMS_HTML
 nav: