diff --git a/nix/gitlab-ci/default.nix b/nix/gitlab-ci/default.nix
index ac67348745..d5bff40165 100644
--- a/nix/gitlab-ci/default.nix
+++ b/nix/gitlab-ci/default.nix
@@ -51,6 +51,8 @@ let
       name = machName;
     };
     allow_failure = true;
+
+    only.refs = [ "branch/default" ];
   } // lib.optionalAttrs (!mach.config.my.deploy.enable) {
     when = "manual";
   });