diff --git a/hosts/hydra/configuration.nix b/hosts/hydra/configuration.nix
index a026a383..53f1e85a 100644
--- a/hosts/hydra/configuration.nix
+++ b/hosts/hydra/configuration.nix
@@ -13,15 +13,15 @@
     ./../../lib/emery.nix
   ];
 
-  services.yggdrasil.config =
-    (with builtins; fromJSON (readFile /var/lib/yggdrasil/keys)) // {
-      Peers = [
-        "tcp://[2a03:3b40:fe:ab::1]:46370" # Praha
-        "tcp://ygg.thingylabs.io:443" # Nürnberg
-        "tcp://176.223.130.120:22632" # Wrocław
-        "tcp://[2a05:9403::8b]:7743" # Praha
-      ];
-    };
+  services.yggdrasil = {
+    configFile = "/var/lib/yggdrasil/keys";
+    config.Peers = [
+      "tcp://[2a03:3b40:fe:ab::1]:46370" # Praha
+      "tcp://ygg.thingylabs.io:443" # Nürnberg
+      "tcp://176.223.130.120:22632" # Wrocław
+      "tcp://[2a05:9403::8b]:7743" # Praha
+    ];
+  };
 
   nixpkgs.config.allowUnfree = true;