diff --git a/README.md b/README.md
index af04e80..1f53ff2 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,8 @@ The build uses [CMake](https://cmake.org). Additionally, you need the following
 - [GNU readline](https://tiswww.cwru.edu/php/chet/readline/rltop.html): For the comman-line interface
 Refer to the corresponding pages for installation instructions. On Linux distributions, readline is probably already installed.
 
+Note that the libraries are all FOSS software and GPL-compatible.
+
 Now, building the project is quite easy:
 ```
 cmake -DCMAKE_BUILD_TYPE=RELEASE .    // Release build recommended for performance, unless you want to develop
@@ -29,3 +31,7 @@ make                                  // Rerun this every time you change source
 # ./endgame-analyzer (GAME_ID | GAME_FILE) TURN
 ```
 where `GAME_ID` is a game from hanab.live and `GAME_FILE` is a path to a file containing the game as JSON in the hanab.live format.
+
+
+## License
+This is GPLv3-licensed. See [LICENSE](./LICENSE) for details.