Use triggers syntax

.drone.yml

@@ -11,8 +11,9 @@ steps:
         path: /var/run/docker.sock
     commands:
       - docker build --no-cache -t autonomic/autonomic.zone:drone .
-    when:
-      branch: master
+    trigger:
+      branch:
+        - master
 
   - name: Deploy Autonomic.zone with Dokku
     image: appleboy/drone-git-push:0.2.0-linux-amd64
@@ -20,5 +21,6 @@ steps:
       remote: ssh://dokku@dokku.autonomic.zone:222/autonomic.zone
       ssh_key:
         from_secret: drone_deploy_key
-    when:
-      branch: master
+    trigger:
+      branch:
+        - master