diff --git a/.drone.yml b/.drone.yml
index cc3d4c9..4951f48 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -10,7 +10,7 @@ steps:
     path: /site
   commands:
 #  - pip install -U -r ./requirements.txt
-  - mkdocs build
+  - mkdocs build --clean
   - cp -r site/ /site
   - chmod -R 777 /site
 volumes: