diff --git a/ahrc-pc/configuration.nix b/ahrc-pc/configuration.nix
index 0f7879c..0849a12 100644
--- a/ahrc-pc/configuration.nix
+++ b/ahrc-pc/configuration.nix
@@ -7,7 +7,10 @@
 
   console.keyMap = "us";
 
-  services.openssh.enable = true;
+  services.openssh = {
+    enable = true;
+    settings = { PasswordAuthentication = false; };
+  };
 
   environment.systemPackages = with pkgs; [ cryptsetup ];