diff --git a/users/tazjin/nixos/koptevo/default.nix b/users/tazjin/nixos/koptevo/default.nix
index ec490e453..a8c98427d 100644
--- a/users/tazjin/nixos/koptevo/default.nix
+++ b/users/tazjin/nixos/koptevo/default.nix
@@ -218,6 +218,10 @@ in
         Listen = true;
         Port = 9443; # yggd
       }];
+
+      AllowedPublicKeys = [
+        "573fd89392e2741ead4edd85034c91c88f1e560d991bbdbf1fccb6233db4d325" # koptevo
+      ];
     };
   };
 
diff --git a/users/tazjin/nixos/modules/home-config.nix b/users/tazjin/nixos/modules/home-config.nix
index 77fe3f69b..9aa1cab46 100644
--- a/users/tazjin/nixos/modules/home-config.nix
+++ b/users/tazjin/nixos/modules/home-config.nix
@@ -6,7 +6,7 @@
   users.users.tazjin = {
     isNormalUser = true;
     createHome = true;
-    extraGroups = [ "wheel" "networkmanager" "video" "adbusers" ];
+    extraGroups = [ "wheel" "networkmanager" "video" "adbusers" "yggdrasil" ];
     uid = 1000;
     shell = pkgs.fish;
     initialHashedPassword = "$2b$05$1eBPdoIgan/C/L8JFqIHBuVscQyTKw1L/4VBlzlLvLBEf6CXS3EW6";
diff --git a/users/tazjin/nixos/modules/physical.nix b/users/tazjin/nixos/modules/physical.nix
index 569230633..92b22112d 100644
--- a/users/tazjin/nixos/modules/physical.nix
+++ b/users/tazjin/nixos/modules/physical.nix
@@ -102,6 +102,13 @@ in
     # run manually patchelfed binaries
     environment.stub-ld.enable = false;
 
+    # Enable yggdrasil network.
+    services.yggdrasil = {
+      enable = true;
+      persistentKeys = true;
+      settings.IfName = "ygg0";
+    };
+
     programs = {
       fish.enable = true;
       mosh.enable = true;