diff --git a/mkdocs.yml b/mkdocs.yml
index fa3e781a..3f06553c 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -89,6 +89,7 @@ plugins:
 markdown_extensions:
 - attr_list
 - pymdownx.emoji
+- pymdownx.superfences # required for markdown-exec since it checks for it in on_config
 - toc:
     permalink: true