diff --git a/mkdocs.yml b/mkdocs.yml
index 2cd00ae..c89b692 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -43,3 +43,10 @@ nav:
     - Python Bindings: python/pycompact.md
   - Fortran Core Reference:
     - Modules & Procedures: fortran.md
+
+markdown_extensions:
+  - pymdownx.superfences:
+      custom_fences:
+        - name: mermaid
+          class: mermaid
+          format: !!python/name:pymdownx.superfences.fence_code_format