diff --git a/anonstream/__main__.py b/anonstream/__main__.py
index 92c2a46..1bc0b53 100644
--- a/anonstream/__main__.py
+++ b/anonstream/__main__.py
@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2022 n9k <https://git.076.ne.jp/ninya9k>
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
 import argparse
 import os
 
diff --git a/anonstream/access.py b/anonstream/access.py
index 3f76c02..e16fd8a 100644
--- a/anonstream/access.py
+++ b/anonstream/access.py
@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2022 n9k <https://git.076.ne.jp/ninya9k>
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
 import time
 
 from quart import current_app