diff --git a/flake.lock b/flake.lock
index faa925e..dade030 100644
--- a/flake.lock
+++ b/flake.lock
@@ -2,11 +2,11 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1753939845,
-        "narHash": "sha256-K2ViRJfdVGE8tpJejs8Qpvvejks1+A4GQej/lBk5y7I=",
+        "lastModified": 1756542300,
+        "narHash": "sha256-tlOn88coG5fzdyqz6R93SQL5Gpq+m/DsWpekNFhqPQk=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "94def634a20494ee057c76998843c015909d6311",
+        "rev": "d7600c775f877cd87b4f5a831c28aa94137377aa",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index 54ff01c..28a2afb 100644
--- a/flake.nix
+++ b/flake.nix
@@ -26,8 +26,8 @@
           enable = true;
           enableSubmission = true;
           enableSubmissions = true;
-          tlsTrustedAuthorities = "${certs.ca.cert}";
-          config = {
+          settings.main = {
+            tlsTrustedAuthorities = "${certs.ca.cert}";
             smtpd_tls_chain_files = [
               certs."acme.test".key
               certs."acme.test".cert