diff --git a/flake.lock b/flake.lock
index bf862e2..9c9d71a 100644
--- a/flake.lock
+++ b/flake.lock
@@ -63,11 +63,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1723556749,
-        "narHash": "sha256-+CHVZnTnIYRLYsARInHYoWkujzcRkLY/gXm3s5bE52o=",
+        "lastModified": 1724727824,
+        "narHash": "sha256-0XH9MJk54imJm+RHOLTUJ7e+ponLW00tw5ke4MTVa1Y=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "4a92571f9207810b559c9eac203d1f4d79830073",
+        "rev": "36bae45077667aff5720e5b3f1a5458f51cf0776",
         "type": "github"
       },
       "original": {
diff --git a/nix/system/security.nix b/nix/system/security.nix
index 756c4ae..aff9b64 100644
--- a/nix/system/security.nix
+++ b/nix/system/security.nix
@@ -1,6 +1,9 @@
 { ... }: {
   services.openssh = {
     enable = true;
+    settings = {
+      PasswordAuthentication = false;
+    };
   };
 
   security = {