From 0fa3888b0ebdf393208483ce8c4e62b69898b599 Mon Sep 17 00:00:00 2001
From: Fabian Neumann <fabian.neumann@outlook.de>
Date: Fri, 13 Aug 2021 10:15:06 +0200
Subject: [PATCH] restore REUSE compliance [skip ci]

---
 doc/requirements.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/doc/requirements.txt b/doc/requirements.txt
index 890eda95..2b461718 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: : 2019-2021 The PyPSA-Eur Authors
+#
+# SPDX-License-Identifier: CC0-1.0
+
 sphinx
 sphinx_rtd_theme