diff --git a/services/hydra/default.nix b/services/hydra/default.nix
index 1510def..f1bb021 100644
--- a/services/hydra/default.nix
+++ b/services/hydra/default.nix
@@ -100,7 +100,7 @@ in {
     services.hydra-dev = {
       enable = true;
 
-      listenHost = "localhost";
+      listenHost = "127.0.0.1";
       port = port;
 
       dbi = "dbi:Pg:${mkPgConnString {