diff --git a/nix/configuration/hosts/odo/distributed_build.nix b/nix/configuration/hosts/odo/distributed_build.nix
index 741d80c..6064fc0 100644
--- a/nix/configuration/hosts/odo/distributed_build.nix
+++ b/nix/configuration/hosts/odo/distributed_build.nix
@@ -13,6 +13,7 @@
       nix.buildMachines = [
         {
           hostName = "hydra";
+          sshUser = "talexander";
           systems = [
             "x86_64-linux"
             # "aarch64-linux"
@@ -24,6 +25,9 @@
             "benchmark"
             "big-parallel"
             # "kvm"
+            "gccarch-znver4"
+            "gccarch-x86-64-v3"
+            "gccarch-x86-64-v4"
           ];
         }
       ];
diff --git a/nix/configuration/roles/ssh/default.nix b/nix/configuration/roles/ssh/default.nix
index fc78956..f4c1d8b 100644
--- a/nix/configuration/roles/ssh/default.nix
+++ b/nix/configuration/roles/ssh/default.nix
@@ -19,6 +19,12 @@
         ".ssh/known_hosts"
       ];
     };
+    users.root = {
+      home = "/root";
+      files = [
+        ".ssh/known_hosts"
+      ];
+    };
   };
 
   home-manager.users.talexander =