diff --git a/pkg/cmd/convert.go b/pkg/cmd/convert.go
index 158326ab..ff945784 100644
--- a/pkg/cmd/convert.go
+++ b/pkg/cmd/convert.go
@@ -6,8 +6,8 @@ import (
 	"k8s.io/client-go/tools/clientcmd"
 )
 
-// NewConvertCmd provides a cobra command for convert sub command
-func NewConvertCmd() *cobra.Command {
+// newConvertCmd provides a cobra command for convert sub command
+func newConvertCmd() *cobra.Command {
 	o := converter.New()
 
 	cmd := &cobra.Command{
diff --git a/pkg/cmd/removetokencache.go b/pkg/cmd/removetokencache.go
index 43f3d35b..d8f4bb1a 100644
--- a/pkg/cmd/removetokencache.go
+++ b/pkg/cmd/removetokencache.go
@@ -8,8 +8,8 @@ import (
 	klog "k8s.io/klog/v2"
 )
 
-// NewRemoveTokenCacheCmd provides a cobra command for removing token cache sub command
-func NewRemoveTokenCacheCmd() *cobra.Command {
+// newRemoveTokenCacheCmd provides a cobra command for removing token cache sub command
+func newRemoveTokenCacheCmd() *cobra.Command {
 	var tokenCacheDir string
 
 	cmd := &cobra.Command{
diff --git a/pkg/cmd/root.go b/pkg/cmd/root.go
index 9b9773c9..fc838355 100644
--- a/pkg/cmd/root.go
+++ b/pkg/cmd/root.go
@@ -17,9 +17,9 @@ func NewRootCmd(version string) *cobra.Command {
 		},
 	}
 
-	cmd.AddCommand(NewConvertCmd())
-	cmd.AddCommand(NewTokenCmd())
-	cmd.AddCommand(NewRemoveTokenCacheCmd())
+	cmd.AddCommand(newConvertCmd())
+	cmd.AddCommand(newTokenCmd())
+	cmd.AddCommand(newRemoveTokenCacheCmd())
 
 	return cmd
 }
diff --git a/pkg/cmd/token.go b/pkg/cmd/token.go
index f46c2de1..cd407bc0 100644
--- a/pkg/cmd/token.go
+++ b/pkg/cmd/token.go
@@ -5,8 +5,8 @@ import (
 	"github.com/spf13/cobra"
 )
 
-// NewTokenCmd provides a cobra command for convert sub command
-func NewTokenCmd() *cobra.Command {
+// newTokenCmd provides a cobra command for convert sub command
+func newTokenCmd() *cobra.Command {
 	o := token.NewOptions()
 
 	cmd := &cobra.Command{