diff --git a/.drone.yml b/.drone.yml
index f0524b8..79b2835 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -19,6 +19,9 @@ steps:
 
   - name: b2
     image: tianon/backblaze-b2:2
+    when:
+      event:
+      - push
     environment:
       BUCKET: carbon-artifacts
       ACCOUNT: