diff --git a/.drone.yml b/.drone.yml
index 5e1ca7e..1c0d902 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -8,6 +8,9 @@ steps:
   commands:
   - yarn
   - yarn test
+  when:
+    branch:
+    - $DRONE_SOURCE_BRANCH
 trigger:
   event:
   - pull_request
\ No newline at end of file