diff --git a/default.nix b/default.nix
index 04fd9d6..1bd1bd7 100644
--- a/default.nix
+++ b/default.nix
@@ -1,6 +1,6 @@
 
 #  nixos-mailserver: a simple mail server
-#  Copyright (C) 2016-2017  Robin Raymond
+#  Copyright (C) 2016-2018  Robin Raymond
 #
 #  This program is free software: you can redistribute it and/or modify
 #  it under the terms of the GNU General Public License as published by
diff --git a/mail-server/clamav.nix b/mail-server/clamav.nix
index 5542a95..9e51abe 100644
--- a/mail-server/clamav.nix
+++ b/mail-server/clamav.nix
@@ -1,5 +1,5 @@
 #  nixos-mailserver: a simple mail server
-#  Copyright (C) 2016-2017  Robin Raymond
+#  Copyright (C) 2016-2018  Robin Raymond
 #
 #  This program is free software: you can redistribute it and/or modify
 #  it under the terms of the GNU General Public License as published by
diff --git a/mail-server/common.nix b/mail-server/common.nix
index 910b5c2..c1741e3 100644
--- a/mail-server/common.nix
+++ b/mail-server/common.nix
@@ -1,5 +1,5 @@
 #  nixos-mailserver: a simple mail server
-#  Copyright (C) 2016-2017  Robin Raymond
+#  Copyright (C) 2016-2018  Robin Raymond
 #
 #  This program is free software: you can redistribute it and/or modify
 #  it under the terms of the GNU General Public License as published by
diff --git a/mail-server/dovecot.nix b/mail-server/dovecot.nix
index 807a708..0de7452 100644
--- a/mail-server/dovecot.nix
+++ b/mail-server/dovecot.nix
@@ -1,5 +1,5 @@
 #  nixos-mailserver: a simple mail server
-#  Copyright (C) 2016-2017  Robin Raymond
+#  Copyright (C) 2016-2018  Robin Raymond
 #
 #  This program is free software: you can redistribute it and/or modify
 #  it under the terms of the GNU General Public License as published by
diff --git a/mail-server/environment.nix b/mail-server/environment.nix
index 48e68c7..8b6b880 100644
--- a/mail-server/environment.nix
+++ b/mail-server/environment.nix
@@ -1,5 +1,5 @@
 #  nixos-mailserver: a simple mail server
-#  Copyright (C) 2016-2017  Robin Raymond
+#  Copyright (C) 2016-2018  Robin Raymond
 #
 #  This program is free software: you can redistribute it and/or modify
 #  it under the terms of the GNU General Public License as published by
diff --git a/mail-server/networking.nix b/mail-server/networking.nix
index 20fa34f..056e411 100644
--- a/mail-server/networking.nix
+++ b/mail-server/networking.nix
@@ -1,5 +1,5 @@
 #  nixos-mailserver: a simple mail server
-#  Copyright (C) 2016-2017  Robin Raymond
+#  Copyright (C) 2016-2018  Robin Raymond
 #
 #  This program is free software: you can redistribute it and/or modify
 #  it under the terms of the GNU General Public License as published by
diff --git a/mail-server/nginx.nix b/mail-server/nginx.nix
index d6ca87c..5dab901 100644
--- a/mail-server/nginx.nix
+++ b/mail-server/nginx.nix
@@ -1,5 +1,5 @@
 #  nixos-mailserver: a simple mail server
-#  Copyright (C) 2016-2017  Robin Raymond
+#  Copyright (C) 2016-2018  Robin Raymond
 #
 #  This program is free software: you can redistribute it and/or modify
 #  it under the terms of the GNU General Public License as published by
diff --git a/mail-server/postfix.nix b/mail-server/postfix.nix
index b36accd..27d54bc 100644
--- a/mail-server/postfix.nix
+++ b/mail-server/postfix.nix
@@ -1,5 +1,5 @@
 #  nixos-mailserver: a simple mail server
-#  Copyright (C) 2016-2017  Robin Raymond
+#  Copyright (C) 2016-2018  Robin Raymond
 #
 #  This program is free software: you can redistribute it and/or modify
 #  it under the terms of the GNU General Public License as published by
diff --git a/mail-server/rmilter.nix b/mail-server/rmilter.nix
index 8c07fce..864bec3 100644
--- a/mail-server/rmilter.nix
+++ b/mail-server/rmilter.nix
@@ -1,5 +1,5 @@
 #  nixos-mailserver: a simple mail server
-#  Copyright (C) 2016-2017  Robin Raymond
+#  Copyright (C) 2016-2018  Robin Raymond
 #
 #  This program is free software: you can redistribute it and/or modify
 #  it under the terms of the GNU General Public License as published by
diff --git a/mail-server/services.nix b/mail-server/services.nix
index 41d2bb3..1af0448 100644
--- a/mail-server/services.nix
+++ b/mail-server/services.nix
@@ -1,5 +1,5 @@
 #  nixos-mailserver: a simple mail server
-#  Copyright (C) 2016-2017  Robin Raymond
+#  Copyright (C) 2016-2018  Robin Raymond
 #
 #  This program is free software: you can redistribute it and/or modify
 #  it under the terms of the GNU General Public License as published by
diff --git a/mail-server/systemd.nix b/mail-server/systemd.nix
index 0f98b7d..cfc73d8 100644
--- a/mail-server/systemd.nix
+++ b/mail-server/systemd.nix
@@ -1,5 +1,5 @@
 #  nixos-mailserver: a simple mail server
-#  Copyright (C) 2016-2017  Robin Raymond
+#  Copyright (C) 2016-2018  Robin Raymond
 #
 #  This program is free software: you can redistribute it and/or modify
 #  it under the terms of the GNU General Public License as published by
diff --git a/mail-server/users.nix b/mail-server/users.nix
index a8cda32..9fb341a 100644
--- a/mail-server/users.nix
+++ b/mail-server/users.nix
@@ -1,5 +1,5 @@
 #  nixos-mailserver: a simple mail server
-#  Copyright (C) 2016-2017  Robin Raymond
+#  Copyright (C) 2016-2018  Robin Raymond
 #
 #  This program is free software: you can redistribute it and/or modify
 #  it under the terms of the GNU General Public License as published by
diff --git a/tests/extern.nix b/tests/extern.nix
index 28fff3b..3f6c88b 100644
--- a/tests/extern.nix
+++ b/tests/extern.nix
@@ -1,5 +1,5 @@
 #  nixos-mailserver: a simple mail server
-#  Copyright (C) 2016-2017  Robin Raymond
+#  Copyright (C) 2016-2018  Robin Raymond
 #
 #  This program is free software: you can redistribute it and/or modify
 #  it under the terms of the GNU General Public License as published by
diff --git a/tests/intern.nix b/tests/intern.nix
index 3d49c15..76832a8 100644
--- a/tests/intern.nix
+++ b/tests/intern.nix
@@ -1,5 +1,5 @@
 #  nixos-mailserver: a simple mail server
-#  Copyright (C) 2016-2017  Robin Raymond
+#  Copyright (C) 2016-2018  Robin Raymond
 #
 #  This program is free software: you can redistribute it and/or modify
 #  it under the terms of the GNU General Public License as published by
diff --git a/tests/minimal.nix b/tests/minimal.nix
index 79e070f..73d1cc6 100644
--- a/tests/minimal.nix
+++ b/tests/minimal.nix
@@ -1,5 +1,5 @@
 #  nixos-mailserver: a simple mail server
-#  Copyright (C) 2016-2017  Robin Raymond
+#  Copyright (C) 2016-2018  Robin Raymond
 #
 #  This program is free software: you can redistribute it and/or modify
 #  it under the terms of the GNU General Public License as published by