diff --git a/mkdocs.yml b/mkdocs.yml
index 504c2b82e..5ab037f39 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -187,8 +187,8 @@ markdown_extensions:
       custom_checkbox: true
   - pymdownx.tabbed:
       alternate_style: true
-  #- pymdownx.superfences:
-  #    custom_fences:
-  #      - name: mermaid
-  #        class: mermaid
-  #        format: !!python/name:pymdownx.superfences.fence_code_format
+  - pymdownx.superfences:
+      custom_fences:
+        - name: mermaid
+          class: mermaid
+          format: !!python/name:pymdownx.superfences.fence_code_format