diff --git a/modules/nixos/common.nix b/modules/nixos/common.nix
index e6827e1..acf6fa7 100644
--- a/modules/nixos/common.nix
+++ b/modules/nixos/common.nix
@@ -138,7 +138,7 @@ in {
       settings = {
         PasswordAuthentication = false;
         KbdInteractiveAuthentication = false;
-        PermitRootLogin = "yes";
+        PermitRootLogin = "prohibit-password";
       };
 
       openFirewall = lib.mkDefault true;