diff --git a/common/base.nix b/common/base.nix
index bcb9576..49e3e1c 100644
--- a/common/base.nix
+++ b/common/base.nix
@@ -30,7 +30,7 @@
     curl
     usbutils
     pciutils
-    (uutils-coreutils.override { prefix = ""; })
+    coreutils-full
     killall
     git
     git-crypt
diff --git a/common/networking.nix b/common/networking.nix
index 75ced12..abc4680 100644
--- a/common/networking.nix
+++ b/common/networking.nix
@@ -17,7 +17,7 @@
 
   # Used by systemd-resolved, not directly by resolv.conf.
   networking.nameservers =
-    [ "8.8.8.8#dns.google" "1.0.0.1#cloudflare-dns.com" ];
+    [ "1.0.0.1#cloudflare-dns.com" "8.8.8.8#dns.google" ];
 
   networking.enableIPv6 = true;
 
@@ -34,7 +34,7 @@
     };
   };
 
-  services.chrony.enable = true;
+  services.ntp.enable = true;
   networking.timeServers =
     [ "ntp1.vniiftri.ru" "0.ru.pool.ntp.org" "0.pool.ntp.org" ];
 
diff --git a/machines/celerrime/default.nix b/machines/celerrime/default.nix
index 319c9a5..bbfbd8a 100644
--- a/machines/celerrime/default.nix
+++ b/machines/celerrime/default.nix
@@ -24,7 +24,7 @@ in {
     virtualisation.enable = false;
     yggdrasil-client.enable = true;
 
-    server = { ivabus-dev.enable = true; };
+    server = { ivabus-dev.enable = false; };
   };
 
   networking.useDHCP = true;
diff --git a/machines/example/default.nix b/machines/example/default.nix
index bfc2406..5c774dc 100644
--- a/machines/example/default.nix
+++ b/machines/example/default.nix
@@ -26,6 +26,8 @@ in {
     torrent.enable = true;
     virtualisation.enable = true;
     yggdrasil-client.enable = true;
+
+    server = { ivabus-dev.enable = true; };
   };
 
   networking.useDHCP = true;
diff --git a/machines/rubusidaeus/default.nix b/machines/rubusidaeus/default.nix
index 632d091..e36ced6 100644
--- a/machines/rubusidaeus/default.nix
+++ b/machines/rubusidaeus/default.nix
@@ -15,7 +15,7 @@ in {
     graphical.enable = false;
     latex.enable = false;
     media-client.enable = false;
-    ntp-server.enable = true;
+    ntp-server.enable = false;
     torrent.enable = false;
     virtualisation.enable = false;
     yggdrasil-client.enable = true;
diff --git a/pkgs/ivabus-dev.nix b/pkgs/ivabus-dev.nix
index bbca9d0..7fb48be 100644
--- a/pkgs/ivabus-dev.nix
+++ b/pkgs/ivabus-dev.nix
@@ -1,6 +1,6 @@
 { pkgs ? import <nixpkgs> { }, bundlerEnv, ... }:
 let
-  version = "130812885aee9f2e0a5f6a4b534a3b6b68431554";
+  version = "8a9a1364bc2111ea4889134f8ca18f10699f26ef";
   repo = builtins.fetchGit {
     url = "https://github.com/ivabus/website";
     rev = version;
diff --git a/roles/server/ivabus-dev.nix b/roles/server/ivabus-dev.nix
index dd56b48..9895b3b 100644
--- a/roles/server/ivabus-dev.nix
+++ b/roles/server/ivabus-dev.nix
@@ -7,7 +7,9 @@ in {
     my.roles.server.nginx.enable = true;
     services.nginx = {
       virtualHosts."ivabus.dev" = {
-        # i don't want to call package like this
+        forceSSL = true;
+        enableACME = true;
+
         root = pkgs.callPackage ../../pkgs/ivabus-dev.nix { };
 
         extraConfig = ''
diff --git a/roles/server/nginx.nix b/roles/server/nginx.nix
index 163e3a2..848f01c 100644
--- a/roles/server/nginx.nix
+++ b/roles/server/nginx.nix
@@ -12,5 +12,11 @@ in {
       recommendedProxySettings = true;
       recommendedTlsSettings = true;
     };
+
+    security.acme = {
+      acceptTerms = true;
+      defaults.email = "ivabus@ivabus.dev";
+    };
+    networking.firewall.allowedTCPPorts = [ 80 443 ];
   };
 }