diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index fc8fce1..2872890 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -39,6 +39,9 @@ publish-job:
 
 deploy-job:
   stage: deploy
+  only:
+    refs:
+      - master
   when: manual
   image: google/cloud-sdk
   needs: