diff --git a/mkdocs.yml b/mkdocs.yml
index d2e97ca0..32712206 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -56,7 +56,11 @@ markdown_extensions:
       emoji_generator: !!python/name:material.extensions.emoji.to_svg
   - pymdownx.inlinehilite
   - pymdownx.snippets
-  - pymdownx.superfences
+  - pymdownx.superfences:
+      custom_fences:
+        - name: mermaid
+          class: mermaid
+          format: !!python/name:pymdownx.superfences.fence_code_format
   - tables
   - attr_list
   - md_in_html