diff --git a/mkdocs.yml b/mkdocs.yml
index 03b8ddbbb..c4b63b8f7 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -87,10 +87,7 @@ markdown_extensions:
         class: custom-bash-block
         format: !!python/name:pymdownx.superfences.fence_code_format
   - markdown.extensions.admonition # Highlighted warning/info blocks
-  - markdown.extensions.attr_list # Set custom HTML attributes {: }
-  - markdown.extensions.footnotes # Footnotes [^1]
   - markdown.extensions.meta # Define meta data (page title and description) at the top of the Markdown document
-  - markdown.extensions.smarty # Automatically convert dashes, underscore, three-dots and quotes to text symbols
   - markdown.extensions.tables # Tables
   - pymdownx.betterem: # More intuitive emphasis handling
       smart_enable: all # Even smarter for both (asterisk and underscore) syntax => GitHub-like