diff --git a/nix/configuration.nix b/nix/configuration.nix
index d88d6ef..4d25bc3 100644
--- a/nix/configuration.nix
+++ b/nix/configuration.nix
@@ -73,7 +73,7 @@ SystemMaxUse=1G
 
   # Enable the OpenSSH daemon and disable password login.
   services.openssh.enable = true;
-  services.openssh.passwordAuthentication = false;
+  services.openssh.settings.PasswordAuthentication = false;
 
   virtualisation.docker = {
     enable = true;