diff --git a/error.go b/error.go
index a1cb595..80a1bc4 100644
--- a/error.go
+++ b/error.go
@@ -20,6 +20,10 @@ type FieldError struct {
 
 // Sanitizer 对配置文件的数据验证和修正
 type Sanitizer interface {
+	// SanitizeConfig 验证当前对象的数据
+	//
+	// NOTE: 如果当前对象是个结构体，
+	// 需要接口的实现自行判断和调用各个字段 [Sanitizer] 接口。
 	SanitizeConfig() *FieldError
 }
 
diff --git a/go.mod b/go.mod
index f4f24a9..47d1642 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,7 @@ module github.com/issue9/config
 go 1.18
 
 require (
-	github.com/issue9/assert/v4 v4.1.1
+	github.com/issue9/assert/v4 v4.2.0
 	github.com/issue9/localeutil v0.26.5
 	golang.org/x/text v0.14.0
 )
diff --git a/go.sum b/go.sum
index 5435c85..586c3bd 100644
--- a/go.sum
+++ b/go.sum
@@ -1,5 +1,5 @@
-github.com/issue9/assert/v4 v4.1.1 h1:OhPE8SB8n/qZCNGLQa+6MQtr/B3oON0JAVj68k8jJlc=
-github.com/issue9/assert/v4 v4.1.1/go.mod h1:v7qDRXi7AsaZZNh8eAK2rkLJg5/clztqQGA1DRv9Lv4=
+github.com/issue9/assert/v4 v4.2.0 h1:XJGMFYW0xfESqFRPLWbSsr0xWdkofytvQbDfNb5n9fw=
+github.com/issue9/assert/v4 v4.2.0/go.mod h1:v7qDRXi7AsaZZNh8eAK2rkLJg5/clztqQGA1DRv9Lv4=
 github.com/issue9/localeutil v0.26.5 h1:e78b6cOOtgzfb4g4U9uPLC8QyK6Lux+s7ZiQe+6iM1A=
 github.com/issue9/localeutil v0.26.5/go.mod h1:BJXJwcAT9CyyVZOlqfmq+B5FcPbqGxGjYnTYbVuiMM8=
 golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=