diff --git a/README.md b/README.md
index c86b022..ef017b3 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,13 @@
-# AdventOfCode
+# Advent of Code
 
-Solutions for Advent of Code
-https://adventofcode.com/
\ No newline at end of file
+Solutions for [Advent of Code](https://adventofcode.com/).
+
+## License
+
+Copyright (C) 2023 Stefan Müller
+
+This program 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.
+
+This program 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 this program. If not, see <http://www.gnu.org/licenses/>.