diff --git a/scripts/build_cop_profiles/BaseCopApproximator.py b/scripts/build_cop_profiles/BaseCopApproximator.py
index 247ff0fe..ad537a74 100644
--- a/scripts/build_cop_profiles/BaseCopApproximator.py
+++ b/scripts/build_cop_profiles/BaseCopApproximator.py
@@ -1,4 +1,7 @@
 # -*- coding: utf-8 -*-
+# SPDX-FileCopyrightText: : 2020-2024 The PyPSA-Eur Authors
+#
+# SPDX-License-Identifier: MIT
 
 from abc import ABC, abstractmethod
 from typing import Union
diff --git a/scripts/build_cop_profiles/CentralHeatingCopApproximator.py b/scripts/build_cop_profiles/CentralHeatingCopApproximator.py
index f2b8d80c..a29dab59 100644
--- a/scripts/build_cop_profiles/CentralHeatingCopApproximator.py
+++ b/scripts/build_cop_profiles/CentralHeatingCopApproximator.py
@@ -1,4 +1,8 @@
 # -*- coding: utf-8 -*-
+# SPDX-FileCopyrightText: : 2020-2024 The PyPSA-Eur Authors
+#
+# SPDX-License-Identifier: MIT
+
 
 from typing import Union
 
diff --git a/scripts/build_cop_profiles/DecentralHeatingCopApproximator.py b/scripts/build_cop_profiles/DecentralHeatingCopApproximator.py
index b49be54c..dfcbdfb3 100644
--- a/scripts/build_cop_profiles/DecentralHeatingCopApproximator.py
+++ b/scripts/build_cop_profiles/DecentralHeatingCopApproximator.py
@@ -1,4 +1,8 @@
 # -*- coding: utf-8 -*-
+# SPDX-FileCopyrightText: : 2020-2024 The PyPSA-Eur Authors
+#
+# SPDX-License-Identifier: MIT
+
 
 
 from typing import Union
diff --git a/scripts/build_cop_profiles/run.py b/scripts/build_cop_profiles/run.py
index c25b80a3..12d012bb 100644
--- a/scripts/build_cop_profiles/run.py
+++ b/scripts/build_cop_profiles/run.py
@@ -1,5 +1,7 @@
 # -*- coding: utf-8 -*-
-
+# SPDX-FileCopyrightText: : 2020-2024 The PyPSA-Eur Authors
+#
+# SPDX-License-Identifier: MIT
 
 import numpy as np
 import xarray as xr