diff --git a/README.md b/README.md
index 07e8c44..1b08f45 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,6 @@
 # log
 ![workflow ci](https://github.com/seacraft/log/actions/workflows/ci.yml/badge.svg)
+[![PkgGoDev](https://pkg.go.dev/badge/github.com/seacraft/errors)](https://pkg.go.dev/github.com/seacraft/errors?tab=doc)
 [![Go Report Card](https://goreportcard.com/badge/github.com/seacraft/log?)](https://goreportcard.com/report/github.com/seacraft/log)
 [![golangci badge](https://github.com/golangci/golangci-web/blob/master/src/assets/images/badge_a_plus_flat.svg)](https://golangci.com/r/github.com/seacraft/log)
 [![release](https://img.shields.io/github/release-pre/seacraft/log.svg)](https://github.com/seacraft/log/releases)