diff --git a/mkdocs.yml b/mkdocs.yml
index 816ba932c..66fac73bf 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -45,7 +45,8 @@ markdown_extensions:
   - pymdownx.snippets
   - footnotes
 strict: true
-nav:
+nav:3.9.18
+81.9.3.0
     - index.md
     - setup.md
     - 'Basic Usage': usage.md