diff --git a/lass/2configs/backup.nix b/lass/2configs/backup.nix
index 27adf6d2a..d23cf9a43 100644
--- a/lass/2configs/backup.nix
+++ b/lass/2configs/backup.nix
@@ -15,6 +15,7 @@ with import <stockholm/lib>;
     openssh.authorizedKeys.keys = with config.krebs.hosts; [
       mors.ssh.pubkey
       prism.ssh.pubkey
+      blue.ssh.pubkey
     ];
   };
 }