diff --git a/build.lisp b/build.lisp
index 4b8cd30..bbf90b1 100644
--- a/build.lisp
+++ b/build.lisp
@@ -1,3 +1,19 @@
+;; sst: The systemd security tool
+;; Copyright (C) 2023 Judah Sotomayor
+
+;; 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
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program 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 <http://www.gnu.org/licenses/>.
+
 ;; Load and build the project
 (ql:quickload :sst)
 
diff --git a/packages.lisp b/packages.lisp
index 857f0ff..7e98a72 100644
--- a/packages.lisp
+++ b/packages.lisp
@@ -1,3 +1,19 @@
+;; sst: The systemd security tool
+;; Copyright (C) 2023 Judah Sotomayor
+
+;; 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
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program 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 <http://www.gnu.org/licenses/>.
+
 (defpackage :sst-ui
   (:use :common-lisp)
   (:export :toplevel))
diff --git a/src/edit.lisp b/src/edit.lisp
index cabff4a..61ba674 100644
--- a/src/edit.lisp
+++ b/src/edit.lisp
@@ -1,3 +1,19 @@
+;; sst: The systemd security tool
+;; Copyright (C) 2023 Judah Sotomayor
+
+;; 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
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program 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 <http://www.gnu.org/licenses/>.
+
 (in-package :sst-edit)
 
 (defun add-settings (settings-list settings-table)
diff --git a/src/flags.lisp b/src/flags.lisp
index bf36698..0c606cc 100644
--- a/src/flags.lisp
+++ b/src/flags.lisp
@@ -1,3 +1,19 @@
+;; sst: The systemd security tool
+;; Copyright (C) 2023 Judah Sotomayor
+
+;; 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
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program 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 <http://www.gnu.org/licenses/>.
+
 (in-package :sst-ui)
 
 (defparameter *option-version*
diff --git a/src/main.lisp b/src/main.lisp
index 94f7032..ad20597 100644
--- a/src/main.lisp
+++ b/src/main.lisp
@@ -1,6 +1,23 @@
-(in-package :sst-ui)
+;; sst: The systemd security tool
+;; Copyright (C) 2023 Judah Sotomayor
 
-(defun run (file &key direct-settings secure)
+;; 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
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program 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 <http://www.gnu.org/licenses/>.
+
+(in-package :sst-ui)
+(defun run (file &key direct-settings secure backup)
+  (if backup
+      (uiop:copy-file file (merge-pathnames backup)))
   ;; Apply the settings to the file.
   (let ((settings-table (systemd-parse:read-service file)))
     (sst-edit:add-settings direct-settings settings-table) ; Inject all the settings options required
diff --git a/src/ui.lisp b/src/ui.lisp
index 3a8dbb0..176288a 100644
--- a/src/ui.lisp
+++ b/src/ui.lisp
@@ -1,3 +1,19 @@
+;; sst: The systemd security tool
+;; Copyright (C) 2023 Judah Sotomayor
+
+;; 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
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program 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 <http://www.gnu.org/licenses/>.
+
 (in-package :sst-ui)
 
 
diff --git a/sst.asd b/sst.asd
index 2a32f5e..7cc2e1a 100644
--- a/sst.asd
+++ b/sst.asd
@@ -1,3 +1,19 @@
+;; sst: The systemd security tool
+;; Copyright (C) 2023 Judah Sotomayor
+
+;; 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
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program 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 <http://www.gnu.org/licenses/>.
+
 (defsystem :sst
   :depends-on (:systemd-parse :adopt)
   :components ((:file "packages")