diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index cc1e5f5..9228439 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -32,6 +32,8 @@ build_master_rpi3:
     - docker push "$IMAGE_NAME:rpi3"
   tags:
     - rpi3
+  only:
+    - master
 
 build:
   <<: *docker_build