diff --git a/scripts/solve_network.py b/scripts/solve_network.py
index 1fa27b32..a36e9edf 100644
--- a/scripts/solve_network.py
+++ b/scripts/solve_network.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# SPDX-FileCopyrightText: : 2020-2023 The PyPSA-Eur Authors
+# SPDX-FileCopyrightText: : 2017-2023 The PyPSA-Eur Authors
 #
 # SPDX-License-Identifier: MIT
 """