diff --git a/mkdocs.yml b/mkdocs.yml
index d39a00d7c..a57a27399 100755
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -76,9 +76,7 @@ plugins:
         extensions/permalinks.md: setup/setting-up-navigation.md #permalink
         extensions/pymdown.md: reference/admonitions.md
         plugins/search.md: setup/setting-up-site-search.md
-        # plugins/minification.md:
         plugins/revision-date.md: setup/adding-a-git-repository.md #revision-date
-        # plugins/awesome-pages.md:
         releases/4.md: upgrading.md #upgrading-from-4x-to-5x
         releases/5.md: upgrading.md #upgrading-from-3x-to-4x
         releases/changelog.md: changelog.md
@@ -132,7 +130,11 @@ markdown_extensions:
   - pymdownx.smartsymbols
   - pymdownx.snippets:
       check_paths: true
-  - pymdownx.superfences
+  - pymdownx.superfences:
+      custom_fences:
+        - name: mermaid
+          class: mermaid
+          format: !!python/name:pymdownx.superfences.fence_code_format
   - pymdownx.tabbed
   - pymdownx.tasklist:
       custom_checkbox: true