diff --git a/mkdocs.yml b/mkdocs.yml
index 127271a2..41770b41 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -79,4 +79,7 @@ markdown_extensions:
   - pymdownx.superfences
   - pymdownx.tabbed:
       alternate_style: true
+      slugify: !!python/object/apply:pymdownx.slugs.slugify
+        kwds:
+          case: lower
   - pymdownx.tilde
\ No newline at end of file