diff --git a/configuration.nix b/configuration.nix
index 0be5e96..a50d84b 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -7,8 +7,8 @@ in {
     # check https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/tags
     # for new releases
     (builtins.fetchTarball {
-      url = "https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/archive/v2.2.1/nixos-mailserver-v2.2.1.tar";
-      sha256 = "03d49v8qnid9g9rha0wg2z6vic06mhp0b049s3whccn1axvs2zzx";
+      url = "https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/archive/v2.3.0/nixos-mailserver-v2.3.0.tar.gz";
+      sha256 = "0lpz08qviccvpfws2nm83n7m2r8add2wvfg9bljx9yxx8107r919";
     })
   ];
 
@@ -50,7 +50,7 @@ in {
   services.openssh.enable = true;
 
   system.autoUpgrade.enable = true;
-  system.stateVersion = "19.03";
+  system.stateVersion = "19.09";
 
   nix = {
     optimise.automatic = true;