diff --git a/api/v1alpha1/promise_webhook.go b/api/v1alpha1/promise_webhook.go
index 659bd692..c165a1ae 100644
--- a/api/v1alpha1/promise_webhook.go
+++ b/api/v1alpha1/promise_webhook.go
@@ -48,6 +48,13 @@ func (p *Promise) SetupWebhookWithManager(mgr ctrl.Manager, cs *clientset.Client
 		Complete()
 }
 
+var _ webhook.Defaulter = &Promise{}
+
+// Default implements webhook.Defaulter so a webhook will be registered for the type
+func (p *Promise) Default() {
+	promiselog.Info("default", "name", p.Name)
+}
+
 // +kubebuilder:webhook:path=/validate-platform-kratix-io-v1alpha1-promise,mutating=false,failurePolicy=fail,sideEffects=None,groups=platform.kratix.io,resources=promises,verbs=create;update,versions=v1alpha1,name=vpromise.kb.io,admissionReviewVersions=v1
 var _ webhook.Validator = &Promise{}
 
diff --git a/config/default/webhookcainjection_patch.yaml b/config/default/webhookcainjection_patch.yaml
index 27a17339..b6575943 100644
--- a/config/default/webhookcainjection_patch.yaml
+++ b/config/default/webhookcainjection_patch.yaml
@@ -1,18 +1,18 @@
 # This patch add annotation to admission webhook config and
 # the variables $(CERTIFICATE_NAMESPACE) and $(CERTIFICATE_NAME) will be substituted by kustomize.
-#apiVersion: admissionregistration.k8s.io/v1
-#kind: MutatingWebhookConfiguration
-#metadata:
-#  labels:
-#    app.kubernetes.io/name: mutatingwebhookconfiguration
-#    app.kubernetes.io/instance: mutating-webhook-configuration
-#    app.kubernetes.io/component: webhook
-#    app.kubernetes.io/created-by: kratix
-#    app.kubernetes.io/part-of: kratix
-#    app.kubernetes.io/managed-by: kustomize
-#  name: mutating-webhook-configuration
-#  annotations:
-#    cert-manager.io/inject-ca-from: $(CERTIFICATE_NAMESPACE)/$(CERTIFICATE_NAME)
+apiVersion: admissionregistration.k8s.io/v1
+kind: MutatingWebhookConfiguration
+metadata:
+  labels:
+    app.kubernetes.io/name: mutatingwebhookconfiguration
+    app.kubernetes.io/instance: mutating-webhook-configuration
+    app.kubernetes.io/component: webhook
+    app.kubernetes.io/created-by: kratix
+    app.kubernetes.io/part-of: kratix
+    app.kubernetes.io/managed-by: kustomize
+  name: mutating-webhook-configuration
+  annotations:
+    cert-manager.io/inject-ca-from: $(CERTIFICATE_NAMESPACE)/$(CERTIFICATE_NAME)
 ---
 apiVersion: admissionregistration.k8s.io/v1
 kind: ValidatingWebhookConfiguration
diff --git a/config/webhook/manifests.yaml b/config/webhook/manifests.yaml
index 94f4e89c..ca3fdf6a 100644
--- a/config/webhook/manifests.yaml
+++ b/config/webhook/manifests.yaml
@@ -1,5 +1,31 @@
 ---
 apiVersion: admissionregistration.k8s.io/v1
+kind: MutatingWebhookConfiguration
+metadata:
+  name: mutating-webhook-configuration
+webhooks:
+- admissionReviewVersions:
+  - v1
+  clientConfig:
+    service:
+      name: webhook-service
+      namespace: system
+      path: /mutate-platform-kratix-io-v1alpha1-promise
+  failurePolicy: Fail
+  name: mpromise.kb.io
+  rules:
+  - apiGroups:
+    - platform.kratix.io
+    apiVersions:
+    - v1alpha1
+    operations:
+    - CREATE
+    - UPDATE
+    resources:
+    - promises
+  sideEffects: None
+---
+apiVersion: admissionregistration.k8s.io/v1
 kind: ValidatingWebhookConfiguration
 metadata:
   name: validating-webhook-configuration