diff --git a/.drone.yml b/.drone.yml
index 9488293..cbf1079 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -20,7 +20,7 @@ steps:
   - name: site
     path: /drone/src/docs
   commands:
-  - cd doc && mkdocs build
+  - cd doc && pip install -r requirements.txt && mkdocs build
 
 - name: deploy
   image: drillster/drone-rsync