diff --git a/distrobox-create b/distrobox-create
index 442e2f0e..8ed13002 100755
--- a/distrobox-create
+++ b/distrobox-create
@@ -1,4 +1,22 @@
 #!/bin/sh
+# SPDX-License-Identifier: GPL-3.0-only
+#
+# This file is part of the distrobox project: https://github.com/89luca89/distrobox
+#
+# Copyright (C) 2021 distrobox contributors
+#
+# distrobox is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License version 3
+# as published by the Free Software Foundation.
+#
+# distrobox 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 distrobox; if not, see <http://www.gnu.org/licenses/>.
+
 # POSIX
 # Expected env variables:
 #	HOME
diff --git a/distrobox-enter b/distrobox-enter
index 3b963cf0..2ad80564 100755
--- a/distrobox-enter
+++ b/distrobox-enter
@@ -1,4 +1,22 @@
 #!/bin/sh
+# SPDX-License-Identifier: GPL-3.0-only
+#
+# This file is part of the distrobox project: https://github.com/89luca89/distrobox
+#
+# Copyright (C) 2021 distrobox contributors
+#
+# distrobox is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License version 3
+# as published by the Free Software Foundation.
+#
+# distrobox 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 distrobox; if not, see <http://www.gnu.org/licenses/>.
+
 # POSIX
 # Expected env variables:
 #	HOME
diff --git a/distrobox-export b/distrobox-export
index eb486c84..3d9b0abf 100755
--- a/distrobox-export
+++ b/distrobox-export
@@ -1,4 +1,22 @@
 #!/bin/sh
+# SPDX-License-Identifier: GPL-3.0-only
+#
+# This file is part of the distrobox project: https://github.com/89luca89/distrobox
+#
+# Copyright (C) 2021 distrobox contributors
+#
+# distrobox is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License version 3
+# as published by the Free Software Foundation.
+#
+# distrobox 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 distrobox; if not, see <http://www.gnu.org/licenses/>.
+
 # POSIX
 # Expected env variables:
 #	HOME
diff --git a/distrobox-init b/distrobox-init
index 0d9bad69..f4df0895 100755
--- a/distrobox-init
+++ b/distrobox-init
@@ -1,4 +1,22 @@
 #!/bin/sh
+# SPDX-License-Identifier: GPL-3.0-only
+#
+# This file is part of the distrobox project: https://github.com/89luca89/distrobox
+#
+# Copyright (C) 2021 distrobox contributors
+#
+# distrobox is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License version 3
+# as published by the Free Software Foundation.
+#
+# distrobox 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 distrobox; if not, see <http://www.gnu.org/licenses/>.
+
 # POSIX
 # Expected env variables:
 #	HOME
diff --git a/install b/install
index 64a1161d..75528bbc 100755
--- a/install
+++ b/install
@@ -1,4 +1,22 @@
 #!/bin/sh
+# SPDX-License-Identifier: GPL-3.0-only
+#
+# This file is part of the distrobox project: https://github.com/89luca89/distrobox
+#
+# Copyright (C) 2021 distrobox contributors
+#
+# distrobox is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License version 3
+# as published by the Free Software Foundation.
+#
+# distrobox 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 distrobox; if not, see <http://www.gnu.org/licenses/>.
+
 # POSIX
 
 dest_path="/usr/local/bin"