diff --git a/management/commands/_import_utils.py b/management/commands/_import_utils.py
index 449609d..601ba49 100644
--- a/management/commands/_import_utils.py
+++ b/management/commands/_import_utils.py
@@ -1,4 +1,5 @@
-#!/usr/bin/env python3
+# Copyright (C) 2018-2020 by BDE ENS Paris-Saclay
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 import json
 import time
diff --git a/management/commands/import_account.py b/management/commands/import_account.py
index 9d0a2f4..4a88e2d 100644
--- a/management/commands/import_account.py
+++ b/management/commands/import_account.py
@@ -1,4 +1,5 @@
-#!/usr/bin/env python3
+# Copyright (C) 2018-2020 by BDE ENS Paris-Saclay
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 import psycopg2 as pg
 import psycopg2.extras as pge
diff --git a/management/commands/import_activities.py b/management/commands/import_activities.py
index 213b2dd..44d0efb 100644
--- a/management/commands/import_activities.py
+++ b/management/commands/import_activities.py
@@ -1,4 +1,5 @@
-#!/usr/bin/env python3
+# Copyright (C) 2018-2020 by BDE ENS Paris-Saclay
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 import psycopg2 as pg
 import psycopg2.extras as pge
diff --git a/management/commands/import_nk15.py b/management/commands/import_nk15.py
index 20c2a13..ea8e4a9 100644
--- a/management/commands/import_nk15.py
+++ b/management/commands/import_nk15.py
@@ -1,4 +1,6 @@
-#!/usr/env/bin python3
+# Copyright (C) 2018-2020 by BDE ENS Paris-Saclay
+# SPDX-License-Identifier: GPL-3.0-or-later
+
 import subprocess
 
 from django.core.management.base import BaseCommand
diff --git a/management/commands/import_transaction.py b/management/commands/import_transaction.py
index e03e404..2f26971 100644
--- a/management/commands/import_transaction.py
+++ b/management/commands/import_transaction.py
@@ -1,4 +1,6 @@
-#!/usr/bin/env python3
+# Copyright (C) 2018-2020 by BDE ENS Paris-Saclay
+# SPDX-License-Identifier: GPL-3.0-or-later
+
 import re
 import psycopg2 as pg
 import psycopg2.extras as pge
diff --git a/management/commands/refresh_highlighted_buttons.py b/management/commands/refresh_highlighted_buttons.py
index 6eb2bc0..3b20fff 100644
--- a/management/commands/refresh_highlighted_buttons.py
+++ b/management/commands/refresh_highlighted_buttons.py
@@ -1,4 +1,5 @@
-#!/usr/bin/env python3
+# Copyright (C) 2018-2020 by BDE ENS Paris-Saclay
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 from datetime import timedelta
 
diff --git a/management/commands/syncsql.py b/management/commands/syncsql.py
index 92a908d..05d94a6 100644
--- a/management/commands/syncsql.py
+++ b/management/commands/syncsql.py
@@ -1,4 +1,5 @@
-#!/usr/bin/env python3
+# Copyright (C) 2018-2020 by BDE ENS Paris-Saclay
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 from django.core.management.base import BaseCommand
 from django.apps import apps