diff --git a/README.md b/README.md
index b323066..6b74890 100644
--- a/README.md
+++ b/README.md
@@ -151,7 +151,8 @@ Usage:
   kmux restart TYPE NAME [flags]
 
 Flags:
-  -h, --help   help for restart
+  -h, --help          help for restart
+  -u, --user string   User added in the restartedBy annotation (read from $KMUX_USER)
 ```
 
 ### `image`
diff --git a/cmd/restart.go b/cmd/restart.go
index 4ed5f3c..1e1b162 100644
--- a/cmd/restart.go
+++ b/cmd/restart.go
@@ -3,12 +3,13 @@ package cmd
 import (
 	"context"
 	"encoding/json"
+	"errors"
 	"fmt"
+	"os"
 	"strings"
 	"time"
 
 	"github.com/ViBiOh/kmux/pkg/client"
-	"github.com/ViBiOh/kmux/pkg/output"
 	"github.com/ViBiOh/kmux/pkg/resource"
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
@@ -16,6 +17,8 @@ import (
 	"k8s.io/apimachinery/pkg/types"
 )
 
+var user string
+
 type restartPatch struct {
 	Spec struct {
 		Template struct {
@@ -56,22 +59,26 @@ var restartCmd = &cobra.Command{
 		return nil, cobra.ShellCompDirectiveNoFileComp
 	},
 	Args: cobra.MatchAll(cobra.ExactArgs(2), cobra.OnlyValidArgs),
-	Run: func(cmd *cobra.Command, args []string) {
+	RunE: func(cmd *cobra.Command, args []string) error {
 		resourceType := args[0]
 		resourceName := args[1]
 
+		if len(user) == 0 {
+			return errors.New("--user is required")
+		}
+
 		ctx, cancel := context.WithCancel(cmd.Context())
 		defer cancel()
 
 		var patch restartPatch
 		patch.Spec.Template.Metadata.Annotations = map[string]string{
 			"kmux.vibioh.fr/restartedAt": time.Now().Format(time.RFC3339),
+			"kmux.vibioh.fr/restartedBy": user,
 		}
 
 		payload, err := json.Marshal(patch)
 		if err != nil {
-			output.Err("", "marshal patch: %s", err)
-			return
+			return fmt.Errorf("marshal patch: %w", err)
 		}
 
 		clients.Execute(ctx, func(ctx context.Context, kube client.Kube) error {
@@ -106,5 +113,13 @@ var restartCmd = &cobra.Command{
 				return fmt.Errorf("unhandled resource type `%s` for restart", resourceType)
 			}
 		})
+
+		return nil
 	},
 }
+
+func initRestart() {
+	flags := restartCmd.Flags()
+
+	flags.StringVarP(&user, "user", "u", os.Getenv("KMUX_USER"), "User added in the restartedBy annotation (read from $KMUX_USER)")
+}
diff --git a/cmd/root.go b/cmd/root.go
index 900b878..6c29c77 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -144,6 +144,8 @@ func init() {
 	}
 
 	rootCmd.AddCommand(versionCmd)
+
+	initRestart()
 	rootCmd.AddCommand(restartCmd)
 
 	initImage()
diff --git a/go.mod b/go.mod
index 46cb75d..25cddbc 100644
--- a/go.mod
+++ b/go.mod
@@ -47,9 +47,9 @@ require (
 	github.com/subosito/gotenv v1.4.2 // indirect
 	golang.org/x/net v0.10.0 // indirect
 	golang.org/x/oauth2 v0.7.0 // indirect
-	golang.org/x/sys v0.10.0 // indirect
+	golang.org/x/sys v0.11.0 // indirect
 	golang.org/x/term v0.8.0 // indirect
-	golang.org/x/text v0.11.0 // indirect
+	golang.org/x/text v0.12.0 // indirect
 	golang.org/x/time v0.1.0 // indirect
 	google.golang.org/appengine v1.6.7 // indirect
 	google.golang.org/protobuf v1.30.0 // indirect
diff --git a/go.sum b/go.sum
index 99abf17..ddef98d 100644
--- a/go.sum
+++ b/go.sum
@@ -381,8 +381,8 @@ golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220908164124-27713097b956/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.10.0 h1:SqMFp9UcQJZa+pmYuAKjd9xq1f0j5rLcDIk0mj4qAsA=
-golang.org/x/sys v0.10.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.11.0 h1:eG7RXZHdqOJ1i+0lgLgCpSXAp6M3LYlAo6osgSi0xOM=
+golang.org/x/sys v0.11.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.8.0 h1:n5xxQn2i3PC0yLAbjTpNT85q/Kgzcr2gIoX9OrJUols=
 golang.org/x/term v0.8.0/go.mod h1:xPskH00ivmX89bAKVGSKKtLOWNx2+17Eiy94tnKShWo=
@@ -394,8 +394,8 @@ golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.4/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
-golang.org/x/text v0.11.0 h1:LAntKIrcmeSKERyiOh0XMV39LXS8IE9UL2yP7+f5ij4=
-golang.org/x/text v0.11.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
+golang.org/x/text v0.12.0 h1:k+n5B8goJNdU7hSvEtMUz3d1Q6D/XW4COJSJR6fN0mc=
+golang.org/x/text v0.12.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
 golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20191024005414-555d28b269f0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=