diff --git a/applications/acme.nix b/applications/acme.nix
index 1031cf5..97aff51 100644
--- a/applications/acme.nix
+++ b/applications/acme.nix
@@ -27,7 +27,6 @@ in {
     age.secrets.acme.file = ../secrets/dns_certs.secret.age;
 
     security.acme = {
-      preliminarySelfsigned = false;
       acceptTerms = true;
 
       defaults = {
diff --git a/flake.lock b/flake.lock
index 81c5faa..285b680 100644
--- a/flake.lock
+++ b/flake.lock
@@ -910,11 +910,11 @@
     },
     "nixpkgs_7": {
       "locked": {
-        "lastModified": 1751271578,
-        "narHash": "sha256-P/SQmKDu06x8yv7i0s8bvnnuJYkxVGBWLWHaU+tt4YY=",
+        "lastModified": 1756787288,
+        "narHash": "sha256-rw/PHa1cqiePdBxhF66V7R+WAP8WekQ0mCDG4CFqT8Y=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "3016b4b15d13f3089db8a41ef937b13a9e33a8df",
+        "rev": "d0fc30899600b9b3466ddb260fd83deb486c32f1",
         "type": "github"
       },
       "original": {