diff --git a/README.md b/README.md
index 96428dc..d1e702d 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 
 <br/>
 
-![Go version](https://img.shields.io/badge/go-%3E%3D1.16<recommend>-9cf)
+![Go version](https://img.shields.io/badge/go-%3E%3Dv1.18-9cf)
 [![Release](https://img.shields.io/badge/release-2.1.0-green.svg)](https://github.com/duke-git/lancet/releases)
 [![GoDoc](https://godoc.org/github.com/duke-git/lancet/v2?status.svg)](https://pkg.go.dev/github.com/duke-git/lancet/v2)
 [![Go Report Card](https://goreportcard.com/badge/github.com/duke-git/lancet/v2)](https://goreportcard.com/report/github.com/duke-git/lancet/v2)
diff --git a/README_zh-CN.md b/README_zh-CN.md
index 3723225..d5575e0 100644
--- a/README_zh-CN.md
+++ b/README_zh-CN.md
@@ -3,7 +3,7 @@
 
 <br/>
 
-![Go version](https://img.shields.io/badge/go-%3E%3D1.16<recommend>-9cf)
+![Go version](https://img.shields.io/badge/go-%3E%3Dv1.18-9cf)
 [![Release](https://img.shields.io/badge/release-2.1.0-green.svg)](https://github.com/duke-git/lancet/releases)
 [![GoDoc](https://godoc.org/github.com/duke-git/lancet/v2?status.svg)](https://pkg.go.dev/github.com/duke-git/lancet/v2)
 [![Go Report Card](https://goreportcard.com/badge/github.com/duke-git/lancet/v2)](https://goreportcard.com/report/github.com/duke-git/lancet/v2)