diff --git a/.envrc b/.envrc
index 4a4726a5..349accec 100644
--- a/.envrc
+++ b/.envrc
@@ -1 +1,4 @@
+# © 2024 piegames <git@piegames.de>
+# SPDX-License-Identifier: MPL-2.0
+
 use_nix
diff --git a/.reuse/dep5 b/.reuse/dep5
index e0212ff3..e8700c0b 100644
--- a/.reuse/dep5
+++ b/.reuse/dep5
@@ -5,6 +5,10 @@ Copyright: 2019 Serokell <hi@serokell.io>
            2019 Lars Jellema <lars.jellema@gmail.com>
 License: MPL-2.0
 
+Files: test/diff/*
+Copyright: 2024 piegames <git@piegames.de>
+License: MPL-2.0
+
 Files: test/correct/*
 Copyright: 2022 Serokell <hi@serokell.io>
            2022 Lars Jellema <lars.jellema@gmail.com>
diff --git a/test/test.sh b/test/test.sh
index 397affe8..8bdef272 100755
--- a/test/test.sh
+++ b/test/test.sh
@@ -1,4 +1,7 @@
 #!/usr/bin/env bash
+# © 2024 piegames <git@piegames.de>
+# SPDX-License-Identifier: MPL-2.0
+
 set -euo pipefail
 
 # Simple test runner for nixfmt.