diff --git a/.guix-authorizations b/.guix-authorizations
index 0b447d7..26dec58 100644
--- a/.guix-authorizations
+++ b/.guix-authorizations
@@ -1,3 +1,20 @@
+;;; Copyright (C) 2022  Ivan Polyakov
+;;;
+;;; This file is part of vilor's guix channel.
+;;;
+;;; Vilor's guix channel is free software: you can redistribute it
+;;; and/or modify it under the terms of the GNU General Public License
+;;; as published by the Free Software Foundation, either version 3
+;;; of the License, or (at your option) any later version.
+;;;
+;;; Vilor's guix channel is distributed in the hope that it will be useful,
+;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;   
+;;; You should have received a copy of the GNU General Public License
+;;; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 (authorizations
   (version 0)
   (("AC31 4AA0 51ED C462 5261  9F0E E524 5EA1 91C9 4054"
diff --git a/.guix-channel b/.guix-channel
index 527e5e1..da8740a 100644
--- a/.guix-channel
+++ b/.guix-channel
@@ -1,3 +1,20 @@
+;;; Copyright (C) 2022  Ivan Polyakov
+;;;
+;;; This file is part of vilor's guix channel.
+;;;
+;;; Vilor's guix channel is free software: you can redistribute it
+;;; and/or modify it under the terms of the GNU General Public License
+;;; as published by the Free Software Foundation, either version 3
+;;; of the License, or (at your option) any later version.
+;;;
+;;; Vilor's guix channel is distributed in the hope that it will be useful,
+;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;   
+;;; You should have received a copy of the GNU General Public License
+;;; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 (channel
   (version 0)
   (name 'vilor)
diff --git a/vilor/packages.scm b/vilor/packages.scm
index eb7d6ea..ed2a868 100644
--- a/vilor/packages.scm
+++ b/vilor/packages.scm
@@ -1,2 +1,19 @@
+;;; Copyright (C) 2022  Ivan Polyakov
+;;;
+;;; This file is part of vilor's guix channel.
+;;;
+;;; Vilor's guix channel is free software: you can redistribute it
+;;; and/or modify it under the terms of the GNU General Public License
+;;; as published by the Free Software Foundation, either version 3
+;;; of the License, or (at your option) any later version.
+;;;
+;;; Vilor's guix channel is distributed in the hope that it will be useful,
+;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;   
+;;; You should have received a copy of the GNU General Public License
+;;; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 (define-module (vilor packages)
   #:use-module (gnu packages))