diff --git a/shared/modules/zrepl.nix b/shared/modules/zrepl.nix
index 0159be0..db479fb 100644
--- a/shared/modules/zrepl.nix
+++ b/shared/modules/zrepl.nix
@@ -19,6 +19,7 @@ in {
         type = types.listOf types.str;
         default = [
           "rpool/safe<"
+          "rpool/backup<"
         ];
       };
     };