diff --git a/go.mod b/go.mod
index b8d27a8..15efc49 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,7 @@ module github.com/orange-cloudfoundry/mdproxy4cs
 go 1.21
 
 require (
-	github.com/alecthomas/kingpin/v2 v2.3.2
+	github.com/alecthomas/kingpin/v2 v2.4.0
 	github.com/google/gopacket v1.1.19
 	github.com/mdlayher/raw v0.1.0
 	github.com/prometheus/common v0.45.0
diff --git a/go.sum b/go.sum
index 414ed69..121dd22 100644
--- a/go.sum
+++ b/go.sum
@@ -1,5 +1,5 @@
-github.com/alecthomas/kingpin/v2 v2.3.2 h1:H0aULhgmSzN8xQ3nX1uxtdlTHYoPLu5AhHxWrKI6ocU=
-github.com/alecthomas/kingpin/v2 v2.3.2/go.mod h1:0gyi0zQnjuFk8xrkNKamJoyUo382HRL7ATRpFZCw6tE=
+github.com/alecthomas/kingpin/v2 v2.4.0 h1:f48lwail6p8zpO1bC4TxtqACaGqHYA22qkHjHpqDjYY=
+github.com/alecthomas/kingpin/v2 v2.4.0/go.mod h1:0gyi0zQnjuFk8xrkNKamJoyUo382HRL7ATRpFZCw6tE=
 github.com/alecthomas/units v0.0.0-20211218093645-b94a6e3cc137 h1:s6gZFSlWYmbqAuRjVTiNNhvNRfY2Wxp9nhfyel4rklc=
 github.com/alecthomas/units v0.0.0-20211218093645-b94a6e3cc137/go.mod h1:OMCwj8VM1Kc9e19TLln2VL61YJF0x1XFtfdL4JdbSyE=
 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
diff --git a/vendor/github.com/alecthomas/kingpin/v2/app.go b/vendor/github.com/alecthomas/kingpin/v2/app.go
index 3818010..4f1f31b 100644
--- a/vendor/github.com/alecthomas/kingpin/v2/app.go
+++ b/vendor/github.com/alecthomas/kingpin/v2/app.go
@@ -413,6 +413,10 @@ func (a *Application) setDefaults(context *ParseContext) error {
 			if flag.name == "help" {
 				return nil
 			}
+
+			if flag.name == "version" {
+				return nil
+			}
 			flagElements[flag.name] = element
 		}
 	}
@@ -460,14 +464,18 @@ func (a *Application) validateRequired(context *ParseContext) error {
 	}
 
 	// Check required flags and set defaults.
+	var missingFlags []string
 	for _, flag := range context.flags.long {
 		if flagElements[flag.name] == nil {
 			// Check required flags were provided.
 			if flag.needsValue() {
-				return fmt.Errorf("required flag --%s not provided", flag.name)
+				missingFlags = append(missingFlags, fmt.Sprintf("'--%s'", flag.name))
 			}
 		}
 	}
+	if len(missingFlags) != 0 {
+		return fmt.Errorf("required flag(s) %s not provided", strings.Join(missingFlags, ", "))
+	}
 
 	for _, arg := range context.arguments.args {
 		if argElements[arg.name] == nil {
diff --git a/vendor/github.com/alecthomas/kingpin/v2/templates.go b/vendor/github.com/alecthomas/kingpin/v2/templates.go
index 9694046..703c2cd 100644
--- a/vendor/github.com/alecthomas/kingpin/v2/templates.go
+++ b/vendor/github.com/alecthomas/kingpin/v2/templates.go
@@ -248,7 +248,7 @@ complete -F _{{.App.Name}}_bash_autocomplete -o default {{.App.Name}}
 var ZshCompletionTemplate = `#compdef {{.App.Name}}
 
 _{{.App.Name}}() {
-    local matches=($(${words[1]} --completion-bash "${(@)words[1,$CURRENT]}"))
+    local matches=($(${words[1]} --completion-bash "${(@)words[2,$CURRENT]}"))
     compadd -a matches
 
     if [[ $compstate[nmatches] -eq 0 && $words[$CURRENT] != -* ]]; then
diff --git a/vendor/modules.txt b/vendor/modules.txt
index b4cc189..b77b1a1 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -1,4 +1,4 @@
-# github.com/alecthomas/kingpin/v2 v2.3.2
+# github.com/alecthomas/kingpin/v2 v2.4.0
 ## explicit; go 1.17
 github.com/alecthomas/kingpin/v2
 # github.com/alecthomas/units v0.0.0-20211218093645-b94a6e3cc137