diff --git a/env.go b/env.go
index c2b7514..ea6ccb6 100644
--- a/env.go
+++ b/env.go
@@ -1,4 +1,4 @@
-package env // import "go.unistack.org/micro-config-env/v3"
+package env // import "go.unistack.org/micro-config-env/v4"
 
 import (
 	"context"
@@ -9,8 +9,8 @@ import (
 	"strings"
 
 	"github.com/imdario/mergo"
-	"go.unistack.org/micro/v3/config"
-	rutil "go.unistack.org/micro/v3/util/reflect"
+	"go.unistack.org/micro/v4/config"
+	rutil "go.unistack.org/micro/v4/util/reflect"
 )
 
 var DefaultStructTag = "env"
diff --git a/env_test.go b/env_test.go
index 63d4afd..674bca8 100644
--- a/env_test.go
+++ b/env_test.go
@@ -6,8 +6,8 @@ import (
 	"testing"
 	"time"
 
-	"go.unistack.org/micro/v3/config"
-	rutil "go.unistack.org/micro/v3/util/reflect"
+	"go.unistack.org/micro/v4/config"
+	rutil "go.unistack.org/micro/v4/util/reflect"
 )
 
 type Config struct {
diff --git a/go.mod b/go.mod
index 9e308ad..8adb537 100644
--- a/go.mod
+++ b/go.mod
@@ -1,8 +1,8 @@
-module go.unistack.org/micro-config-env/v3
+module go.unistack.org/micro-config-env/v4
 
-go 1.18
+go 1.20
 
 require (
-	github.com/imdario/mergo v0.3.13
-	go.unistack.org/micro/v3 v3.10.16
+	github.com/imdario/mergo v0.3.14
+	go.unistack.org/micro/v4 v4.0.1
 )
diff --git a/go.sum b/go.sum
index 8ff5437..6ac6217 100644
--- a/go.sum
+++ b/go.sum
@@ -1,10 +1,7 @@
-github.com/imdario/mergo v0.3.13 h1:lFzP57bqS/wsqKssCGmtLAb8A0wKjLGrve2q3PPVcBk=
-github.com/imdario/mergo v0.3.13/go.mod h1:4lJ1jqUDcsbIECGy0RUJAXNIhg+6ocWgb1ALK2O4oXg=
-github.com/patrickmn/go-cache v2.1.0+incompatible/go.mod h1:3Qf8kWWT7OJRJbdiICTKqZju1ZixQ/KpMGzzAfe6+WQ=
-github.com/silas/dag v0.0.0-20211117232152-9d50aa809f35/go.mod h1:7RTUFBdIRC9nZ7/3RyRNH1bdqIShrDejd1YbLwgPS+I=
-go.unistack.org/micro/v3 v3.10.16 h1:2er/SKKYbV60M+UuJM4eYCF0MZYAIq/yNUrAbTfgq8Q=
-go.unistack.org/micro/v3 v3.10.16/go.mod h1:uMAc0U/x7dmtICCrblGf0ZLgYegu3VwQAquu+OFCw1Q=
+github.com/imdario/mergo v0.3.14 h1:fOqeC1+nCuuk6PKQdg9YmosXX7Y7mHX6R/0ZldI9iHo=
+github.com/imdario/mergo v0.3.14/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=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/yaml.v3 v3.0.0/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 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/watcher.go b/watcher.go
index 268dad1..b097183 100644
--- a/watcher.go
+++ b/watcher.go
@@ -3,9 +3,9 @@ package env
 import (
 	"reflect"
 
-	"go.unistack.org/micro/v3/config"
-	"go.unistack.org/micro/v3/util/jitter"
-	rutil "go.unistack.org/micro/v3/util/reflect"
+	"go.unistack.org/micro/v4/config"
+	"go.unistack.org/micro/v4/util/jitter"
+	rutil "go.unistack.org/micro/v4/util/reflect"
 )
 
 type envWatcher struct {