diff --git a/README.md b/README.md
index df98b3b..a95b303 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ To compile, simply run `make`.
 
 The `./tools/` directory contains two python scripts with which we can
 transform the output of `./superflow` to the [DOT
-language](https://graphviz.org/doc/info/lang.html) for graph visualization. The
+language](https://graphviz.org/doc/info/lang.html) for graph visualization. They
 require the [NumPy](https://numpy.org/) package.
 
 
@@ -39,3 +39,7 @@ the return code is 0 if all leafs are trivial, and 1 otherwise.
 
 LIMITATION: The input graph has at most 9 vertices.
 ```
+
+
+## License
+[GPL-3.0-or-later](./LICENSES/GPL-3.0-or-later.txt)