diff --git a/mkdocs.yml b/mkdocs.yml
index beb53480..ee7297bc 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -5,6 +5,8 @@ theme:
     name: material
     features:
         - tabs
+plugins:
+    - markdownmermaid
 markdown_extensions:
     - admonition
     - pymdownx.details
@@ -21,6 +23,7 @@ markdown_extensions:
 extra_javascript:
     - https://cdnjs.cloudflare.com/ajax/libs/highlight.js/10.1.1/highlight.min.js
     - javascripts/config.js
+    - https://unpkg.com/mermaid@7.1.2/dist/mermaid.min.js
 extra_css:
     - https://cdnjs.cloudflare.com/ajax/libs/highlight.js/10.1.1/styles/default.min.css
 nav:
@@ -41,3 +44,5 @@ nav:
             - cours/python/1stproject.md
             - cours/python/rest.md
             - cours/python/os-script.md
+    - Divers: 
+        - divers/backup.md
diff --git a/requirements.txt b/requirements.txt
index 1a747c06..49c4a2c6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,3 +5,4 @@ mkdocs>=1.1.2
 # (https://github.com/mkdocs/mkdocs/wiki/MkDocs-Themes)
 mkdocs-material>=5.4.0
 Pygments
+git+https://github.com/pugong/mkdocs-mermaid-plugin