diff --git a/main.go b/main.go
index f35de554..4a35637e 100644
--- a/main.go
+++ b/main.go
@@ -102,8 +102,11 @@ func main() {
 
 	var metricsAddr, namespace, configurationName string
 
+	var webhookPort int
+
 	var goFlagSet goflag.FlagSet
 
+	flag.IntVar(&webhookPort, "webhook-port", 9443, "The port the webhook server binds to.")
 	flag.StringVar(&metricsAddr, "metrics-addr", ":8080", "The address the metric endpoint binds to.")
 	flag.BoolVar(&enableLeaderElection, "enable-leader-election", false,
 		"Enable leader election for controller manager. "+
@@ -142,7 +145,7 @@ func main() {
 	manager, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
 		Scheme:                 scheme,
 		MetricsBindAddress:     metricsAddr,
-		Port:                   9443,
+		Port:                   webhookPort,
 		LeaderElection:         enableLeaderElection,
 		LeaderElectionID:       "42c733ea.clastix.capsule.io",
 		HealthProbeBindAddress: ":10080",