diff --git a/nixops/rpi.nix b/nixops/rpi.nix
index 3e006c9..e72ef2e 100644
--- a/nixops/rpi.nix
+++ b/nixops/rpi.nix
@@ -72,5 +72,5 @@ in
 
   nix.binaryCachePublicKeys = ["nixbld.m-labs.hk-1:5aSRVA5b320xbNvu30tqxVPXpld73bhtOeH6uAjRyHc="];
   nix.binaryCaches = ["https://cache.nixos.org" "https://nixbld.m-labs.hk"];
-  nix.trustedUsers = ["root" "nix"];
+  nix.trustedUsers = ["root" "nix" "sb"];
 }