diff --git a/README.md b/README.md
index 1f9fd65..592e5dc 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,7 @@
 # license
 
 [![Go](https://github.com/haunt98/license/workflows/Go/badge.svg?branch=main)](https://github.com/actions/setup-go)
+[![Go Reference](https://pkg.go.dev/badge/github.com/haunt98/license.svg)](https://pkg.go.dev/github.com/haunt98/license)
 
 Generate `LICENSE` file automatically.