diff --git a/.woodpecker.yml b/.woodpecker.yml
index 06ea5fc..b5d7666 100644
--- a/.woodpecker.yml
+++ b/.woodpecker.yml
@@ -8,6 +8,8 @@ steps:
       registry: ${DOCKER_REGISTRY}
       tags: latest
     when:
+      branch:
+        exclude: ${CI_REPO_DEFAULT_BRANCH}
       event: [push, manual, tag]
   push:
     image: woodpeckerci/plugin-kaniko