diff --git a/mkdocs.yml b/mkdocs.yml
index 1c358cf..7d10364 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -24,7 +24,7 @@ markdown_extensions:
   - pymdownx.tabbed
 plugins:
   - sequence-js:
-      theme: hand
+      theme: simple
       popup: true
   - with-pdf:
       copyright: Copyright © 2020 Bernd Reuther