diff --git a/README.md b/README.md
index 87061ab..4927b3e 100644
--- a/README.md
+++ b/README.md
@@ -93,3 +93,10 @@ port's Python binding; you can view it
 
 - Ruby, see [tzf-rb](https://github.com/HarlemSquirrel/tzf-rb)
 - Python, see [tzfpy](https://github.com/ringsaturn/tzfpy)
+
+## LICENSE
+
+This project is licensed under the [MIT license](./LICENSE). The data is
+licensed under the
+[ODbL license](https://github.com/ringsaturn/tzf-rel/blob/main/LICENSE), same as
+[`evansiroky/timezone-boundary-builder`](https://github.com/evansiroky/timezone-boundary-builder)