diff --git a/notebook/mkdocs.yml b/notebook/mkdocs.yml
index a4b9ce30..e8bfa689 100644
--- a/notebook/mkdocs.yml
+++ b/notebook/mkdocs.yml
@@ -14,4 +14,4 @@ nav:
     - 介绍:docs/basic.md
 
 theme:
-  name: readthedocs
\ No newline at end of file
+  name: mkdocs-rtd-dropdown
\ No newline at end of file