diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 36130c4..80034d6 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -226,3 +226,6 @@ publish:s3:
     -   aws s3api put-object-acl --acl public-read --bucket $S3_BUCKET_NAME
           --key ${RASPBIAN_NAME}/arm/${PUBLISH_NAME}
     - done
+
+  only:
+    - /^(master|[0-9]+\.[0-9]+\.x)$/