diff --git a/reading.py b/reading.py
index 716e9ba..9e33544 100644
--- a/reading.py
+++ b/reading.py
@@ -1,13 +1,19 @@
 # -*- coding: utf-8 -*-
 
-# This file is based on the Japanese Support add-on's reading.py, which can be
-# found at <https://github.com/ankitects/anki-addons>.
+# This file is part of Japanese Furigana <https://github.com/obynio/anki-japanese-furigana>.
 #
-# Copyright: Ankitects Pty Ltd and contributors
-# License: GNU GPL, version 3 or later; http://www.gnu.org/copyleft/gpl.html
+# Japanese Furigana is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
 #
-# Automatic reading generation with mecab.
+# Japanese Furigana is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
 #
+# You should have received a copy of the GNU General Public License
+# along with Japanese Furigana.  If not, see <http://www.gnu.org/licenses/>.
 
 import sys
 import os
diff --git a/test/test_reading.py b/test/test_reading.py
index b09dfa6..960db4b 100644
--- a/test/test_reading.py
+++ b/test/test_reading.py
@@ -1,3 +1,20 @@
+# -*- coding: utf-8 -*-
+
+# This file is part of Japanese Furigana <https://github.com/obynio/anki-japanese-furigana>.
+#
+# Japanese Furigana is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Japanese Furigana is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Japanese Furigana.  If not, see <http://www.gnu.org/licenses/>.
+
 import unittest
 
 import reading
diff --git a/test/test_utils.py b/test/test_utils.py
index 2a84f81..90e7d65 100644
--- a/test/test_utils.py
+++ b/test/test_utils.py
@@ -1,3 +1,20 @@
+# -*- coding: utf-8 -*-
+
+# This file is part of Japanese Furigana <https://github.com/obynio/anki-japanese-furigana>.
+#
+# Japanese Furigana is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Japanese Furigana is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Japanese Furigana.  If not, see <http://www.gnu.org/licenses/>.
+
 import unittest
 
 import utils
diff --git a/utils.py b/utils.py
index a234da5..66f3838 100644
--- a/utils.py
+++ b/utils.py
@@ -1,5 +1,20 @@
 # -*- coding: utf-8 -*-
 
+# This file is part of Japanese Furigana <https://github.com/obynio/anki-japanese-furigana>.
+#
+# Japanese Furigana is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Japanese Furigana is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Japanese Furigana.  If not, see <http://www.gnu.org/licenses/>.
+
 import re
 
 def removeFurigana(text: str):