diff --git a/.drone.yml b/.drone.yml
index 2d3b44c..4fda616 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -22,6 +22,9 @@ steps:
     AWS_SECRET_ACCESS_KEY:
       from_secret: AWS_SECRET_ACCESS_KEY
     AWS_DEFAULT_REGION: us-east-1
+  when:
+    branch:
+    - master
   commands:
   # Build website
   - pip install mkdocs-material