diff --git a/README.md b/README.md
index e347007..feda515 100644
--- a/README.md
+++ b/README.md
@@ -3,11 +3,12 @@
 [![Go](https://github.com/haunt98/license/workflows/Go/badge.svg?branch=main)](https://github.com/haunt98/license/actions)
 [![Go Reference](https://pkg.go.dev/badge/github.com/haunt98/license.svg)](https://pkg.go.dev/github.com/haunt98/license)
 
-Generate `LICENSE` file automatically.
+Generate license file (`LICENSE`, `COPYING`, ...) automatically.
 
 Support:
 
 - [MIT](https://choosealicense.com/licenses/mit/)
+- [GNU GPLv3](https://choosealicense.com/licenses/gpl-3.0/)
 
 ## Install