diff --git a/hosts/hydra-1/build-machines.nix b/hosts/hydra-1/build-machines.nix
new file mode 100644
index 0000000..36c001e
--- /dev/null
+++ b/hosts/hydra-1/build-machines.nix
@@ -0,0 +1,36 @@
+{ ... }:
+
+{
+
+  nix = {
+    distributedBuilds = true;
+    buildMachines = [
+      {
+        hostName = "hydra-1.net.clerie.de";
+        sshUser = "root";
+        systems = [
+          "x86_64-linux"
+          "armv6l-linux"
+          "armv7l-linux"
+          "aarch64-linux"
+        ];
+        sshKey = "/var/lib/hydra/id_ed25519";
+      }
+      {
+        hostName = "hydra-2.net.clerie.de";
+        sshUser = "root";
+        systems = [
+          "x86_64-linux"
+          "armv6l-linux"
+          "armv7l-linux"
+          "aarch64-linux"
+        ];
+        sshKey = "/var/lib/hydra/id_ed25519";
+      }
+    ];
+  };
+
+  programs.ssh.knownHosts."hydra-1.net.clerie.de".publicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIE2xQBCsFBCwL9n4OP/bPngtNO1fy9kPw13Z/NDoba16 root@hydra-1";
+  programs.ssh.knownHosts."hydra-2.net.clerie.de".publicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIDZED9QM+qe7sB6R6atvP6WNaI2sC2nh7TTsD6kgRpnr root@hydra-2";
+
+}
diff --git a/hosts/hydra-1/configuration.nix b/hosts/hydra-1/configuration.nix
index dbf07a8..3f9b9da 100644
--- a/hosts/hydra-1/configuration.nix
+++ b/hosts/hydra-1/configuration.nix
@@ -7,6 +7,7 @@
       ../../configuration/proxmox-vm
       ../../configuration/hydra-build-machine
 
+      ./build-machines.nix
       ./hydra.nix
     ];
 
@@ -28,37 +29,6 @@
   networking.defaultGateway = { address = "192.168.10.1"; interface = "ens19"; };
   networking.nameservers = [ "2001:638:904:ffcc::3" "2001:638:904:ffcc::4" "141.24.40.3" "141.24.40.4" ];
 
-  nix = {
-    distributedBuilds = true;
-    buildMachines = [
-      {
-        hostName = "hydra-1.net.clerie.de";
-        sshUser = "root";
-        systems = [
-          "x86_64-linux"
-          "armv6l-linux"
-          "armv7l-linux"
-          "aarch64-linux"
-        ];
-        sshKey = "/var/lib/hydra/id_ed25519";
-      }
-      {
-        hostName = "hydra-2.net.clerie.de";
-        sshUser = "root";
-        systems = [
-          "x86_64-linux"
-          "armv6l-linux"
-          "armv7l-linux"
-          "aarch64-linux"
-        ];
-        sshKey = "/var/lib/hydra/id_ed25519";
-      }
-    ];
-  };
-
-  programs.ssh.knownHosts."hydra-1.net.clerie.de".publicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIE2xQBCsFBCwL9n4OP/bPngtNO1fy9kPw13Z/NDoba16 root@hydra-1";
-  programs.ssh.knownHosts."hydra-2.net.clerie.de".publicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIDZED9QM+qe7sB6R6atvP6WNaI2sC2nh7TTsD6kgRpnr root@hydra-2";
-
   services.harmonia = {
     enable = true;
     settings.bind = "[::1]:5005";