diff --git a/modules/nixos/garage.nix b/modules/nixos/garage.nix
index 7d6756f..80cab97 100644
--- a/modules/nixos/garage.nix
+++ b/modules/nixos/garage.nix
@@ -27,6 +27,8 @@
       rpc_bind_addr = "0.0.0.0:3901";
       bootstrap_peers = [ ];
 
+      rpc_public_addr = "heimdall.tsn:3901";
+
       s3_api = {
         api_bind_addr = "0.0.0.0:3900";
         s3_region = "garage";