diff --git a/configuration.nix b/configuration.nix
index 6fe772d..f19966f 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -62,7 +62,7 @@
     openFirewall = false;
   };
   programs.ssh = {
-    pubkeyAcceptedKeyTypes = [ "ssh-ed25519" "ssh-rsa" ];
+    pubkeyAcceptedKeyTypes = [ "ssh-ed25519" "ssh-rsa" "ecdsa-sha2-nistp256" ];
     hostKeyAlgorithms = [ "ssh-ed25519" "ssh-rsa" ];
   };
   environment.systemPackages = with pkgs; [
@@ -70,10 +70,6 @@
     jq
   ];
   # consider environment.defaultPackages = lib.mkForce [];
-  # TODO is it needed?
-  environment.variables = {
-    DOMAIN = config.selfprivacy.domain;
-  };
   documentation.enable = false; # no {man,info}-pages & docs, etc to save space
   # (or create a systemd service with `ConditionFirstBoot=yes`?)
   systemd.tmpfiles.rules = [
diff --git a/flake.lock b/flake.lock
index 3a06119..f93d146 100644
--- a/flake.lock
+++ b/flake.lock
@@ -2,11 +2,11 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1702780907,
-        "narHash": "sha256-blbrBBXjjZt6OKTcYX1jpe9SRof2P9ZYWPzq22tzXAA=",
+        "lastModified": 1704420045,
+        "narHash": "sha256-C36QmoJd5tdQ5R9MC1jM7fBkZW9zBUqbUCsgwS6j4QU=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "1e2e384c5b7c50dbf8e9c441a9e58d85f408b01f",
+        "rev": "c1be43e8e837b8dbee2b3665a007e761680f0c3d",
         "type": "github"
       },
       "original": {
@@ -28,11 +28,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1704039216,
-        "narHash": "sha256-ooMgVCLR+3BHxGiEOqjzp2YXsR067SAHT7yNinm6U9k=",
-        "ref": "flakes",
-        "rev": "8ffd08e95fecd8f649f6cc00f098e81eb8f03caf",
-        "revCount": 1070,
+        "lastModified": 1705313551,
+        "narHash": "sha256-la/XZyI5bEgwMOO/v6kOb0gZgzfaOTD9wxPxGNL0N5M=",
+        "ref": "refs/heads/master",
+        "rev": "e3761a200c1ce244b285772a0c731a10e6169ef3",
+        "revCount": 1169,
         "type": "git",
         "url": "https://git.selfprivacy.org/SelfPrivacy/selfprivacy-rest-api.git"
       },
diff --git a/selfprivacy-module.nix b/selfprivacy-module.nix
index b0fa077..b313a6d 100644
--- a/selfprivacy-module.nix
+++ b/selfprivacy-module.nix
@@ -20,7 +20,7 @@ with lib;
         Timezone used by the server
       '';
       type = types.nullOr types.str;
-      default = "Europe/Uzhgorod";
+      default = "Etc/UTC";
     };
     autoUpgrade = {
       enable = mkOption {