diff --git a/flag.go b/flag.go
index 887b7e0..9e7967a 100644
--- a/flag.go
+++ b/flag.go
@@ -11,6 +11,7 @@ import (
 	"time"
 
 	"go.unistack.org/micro/v4/config"
+	"go.unistack.org/micro/v4/options"
 	rutil "go.unistack.org/micro/v4/util/reflect"
 )
 
@@ -39,7 +40,7 @@ func (c *flagConfig) Options() config.Options {
 	return c.opts
 }
 
-func (c *flagConfig) Init(opts ...config.Option) error {
+func (c *flagConfig) Init(opts ...options.Option) error {
 	for _, o := range opts {
 		o(&c.opts)
 	}
@@ -155,7 +156,7 @@ func (c *flagConfig) Init(opts ...config.Option) error {
 	return nil
 }
 
-func (c *flagConfig) Load(ctx context.Context, opts ...config.LoadOption) error {
+func (c *flagConfig) Load(ctx context.Context, opts ...options.Option) error {
 	options := config.NewLoadOptions(opts...)
 	_ = options
 
@@ -173,7 +174,7 @@ func (c *flagConfig) Load(ctx context.Context, opts ...config.LoadOption) error
 	return nil
 }
 
-func (c *flagConfig) Save(ctx context.Context, opts ...config.SaveOption) error {
+func (c *flagConfig) Save(ctx context.Context, opts ...options.Option) error {
 	if err := config.DefaultBeforeSave(ctx, c); err != nil && !c.opts.AllowFail {
 		return err
 	}
@@ -193,7 +194,7 @@ func (c *flagConfig) Name() string {
 	return c.opts.Name
 }
 
-func (c *flagConfig) Watch(ctx context.Context, opts ...config.WatchOption) (config.Watcher, error) {
+func (c *flagConfig) Watch(ctx context.Context, opts ...options.Option) (config.Watcher, error) {
 	return nil, fmt.Errorf("not implemented")
 }
 
@@ -308,7 +309,7 @@ func (c *flagConfig) configure() {
 	c.name = flagSetName
 }
 
-func NewConfig(opts ...config.Option) config.Config {
+func NewConfig(opts ...options.Option) config.Config {
 	options := config.NewOptions(opts...)
 	if len(options.StructTag) == 0 {
 		options.StructTag = DefaultStructTag
diff --git a/go.mod b/go.mod
index e22e9e6..9cef3cb 100644
--- a/go.mod
+++ b/go.mod
@@ -2,6 +2,9 @@ module go.unistack.org/micro-config-flag/v3
 
 go 1.18
 
-require go.unistack.org/micro/v4 v4.0.1
+require go.unistack.org/micro/v4 v4.0.5
 
-require github.com/imdario/mergo v0.3.14 // indirect
+require (
+	github.com/google/uuid v1.3.0 // indirect
+	github.com/imdario/mergo v0.3.16 // indirect
+)
diff --git a/go.sum b/go.sum
index 6ac6217..abbf684 100644
--- a/go.sum
+++ b/go.sum
@@ -1,7 +1,13 @@
-github.com/imdario/mergo v0.3.14 h1:fOqeC1+nCuuk6PKQdg9YmosXX7Y7mHX6R/0ZldI9iHo=
-github.com/imdario/mergo v0.3.14/go.mod h1:WBLT9ZmE3lPoWsEzCh9LPo3TiwVN+ZKEjmz+hD27ysY=
+github.com/google/uuid v1.3.0 h1:t6JiXgmwXMjEs8VusXIJk2BXHsn+wx8BZdTaoZ5fu7I=
+github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/imdario/mergo v0.3.15 h1:M8XP7IuFNsqUx6VPK2P9OSmsYsI/YFaGil0uD21V3dM=
+github.com/imdario/mergo v0.3.15/go.mod h1:WBLT9ZmE3lPoWsEzCh9LPo3TiwVN+ZKEjmz+hD27ysY=
+github.com/imdario/mergo v0.3.16 h1:wwQJbIsHYGMUyLSPrEq1CT16AhnhNJQ51+4fdHUnCl4=
+github.com/imdario/mergo v0.3.16/go.mod h1:WBLT9ZmE3lPoWsEzCh9LPo3TiwVN+ZKEjmz+hD27ysY=
 go.unistack.org/micro/v4 v4.0.1 h1:xo1IxbVfgh8i0eY0VeYa3cbb13u5n/Mxnp3FOgWD4Jo=
 go.unistack.org/micro/v4 v4.0.1/go.mod h1:p/J5UcSJjfHsWGT31uKoghQ5rUQZzQJBAFy+Z4+ZVMs=
+go.unistack.org/micro/v4 v4.0.5 h1:uacmV8yHjCOtVfECc4w1tgp6bd3bBWrZa8X4iQLk48g=
+go.unistack.org/micro/v4 v4.0.5/go.mod h1:bVEYTlPi0EsdgZZt311bIroDg9ict7ky3C87dSCCAGk=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
diff --git a/options.go b/options.go
index 0dbb35d..9c5f6b8 100644
--- a/options.go
+++ b/options.go
@@ -3,61 +3,61 @@ package flag
 import (
 	"flag"
 
-	"go.unistack.org/micro/v4/config"
+	"go.unistack.org/micro/v4/options"
 )
 
 type sliceDelimKey struct{}
 
 // SliceDelim set the slice delimeter
-func SliceDelim(s string) config.Option {
-	return config.SetOption(sliceDelimKey{}, s)
+func SliceDelim(s string) options.Option {
+	return options.ContextOption(sliceDelimKey{}, s)
 }
 
 type mapDelimKey struct{}
 
 // MapDelim set the map delimeter
-func MapDelim(s string) config.Option {
-	return config.SetOption(mapDelimKey{}, s)
+func MapDelim(s string) options.Option {
+	return options.ContextOption(mapDelimKey{}, s)
 }
 
 type timeFormatKey struct{}
 
 // TimeFormat set the time format
-func TimeFormat(s string) config.Option {
-	return config.SetOption(timeFormatKey{}, s)
+func TimeFormat(s string) options.Option {
+	return options.ContextOption(timeFormatKey{}, s)
 }
 
 type flagSetKey struct{}
 
 // FlagSet set flag set name
-func FlagSet(f *flag.FlagSet) config.Option {
-	return config.SetOption(flagSetKey{}, f)
+func FlagSet(f *flag.FlagSet) options.Option {
+	return options.ContextOption(flagSetKey{}, f)
 }
 
 type flagSetNameKey struct{}
 
 // FlagSetName set flag set name
-func FlagSetName(n string) config.Option {
-	return config.SetOption(flagSetNameKey{}, n)
+func FlagSetName(n string) options.Option {
+	return options.ContextOption(flagSetNameKey{}, n)
 }
 
 type flagSetErrorHandlingKey struct{}
 
 // FlagErrorHandling set flag set error handling
-func FlagErrorHandling(eh flag.ErrorHandling) config.Option {
-	return config.SetOption(flagSetErrorHandlingKey{}, eh)
+func FlagErrorHandling(eh flag.ErrorHandling) options.Option {
+	return options.ContextOption(flagSetErrorHandlingKey{}, eh)
 }
 
 type flagSetUsageKey struct{}
 
 // FlagUsage set flag set usage func
-func FlagUsage(fn func()) config.Option {
-	return config.SetOption(flagSetUsageKey{}, fn)
+func FlagUsage(fn func()) options.Option {
+	return options.ContextOption(flagSetUsageKey{}, fn)
 }
 
 type flagEnvKey struct{}
 
 // FlagEnv set flag set usage func
-func FlagEnv(n string) config.Option {
-	return config.SetOption(flagEnvKey{}, n)
+func FlagEnv(n string) options.Option {
+	return options.ContextOption(flagEnvKey{}, n)
 }