diff --git a/api/bases/dataplane.openstack.org_openstackdataplanedeployments.yaml b/api/bases/dataplane.openstack.org_openstackdataplanedeployments.yaml
index f523704de..096d9fc0c 100644
--- a/api/bases/dataplane.openstack.org_openstackdataplanedeployments.yaml
+++ b/api/bases/dataplane.openstack.org_openstackdataplanedeployments.yaml
@@ -68,6 +68,9 @@ spec:
             - deploymentRequeueTime
             - nodeSets
             type: object
+            x-kubernetes-validations:
+            - message: OpenStackDataPlaneDeployment Spec is immutable
+              rule: self == oldSelf
           status:
             properties:
               conditions:
diff --git a/api/v1beta1/openstackdataplanedeployment_types.go b/api/v1beta1/openstackdataplanedeployment_types.go
index 323c2331e..fdc86ad83 100644
--- a/api/v1beta1/openstackdataplanedeployment_types.go
+++ b/api/v1beta1/openstackdataplanedeployment_types.go
@@ -91,6 +91,7 @@ type OpenStackDataPlaneDeployment struct {
 	metav1.TypeMeta   `json:",inline"`
 	metav1.ObjectMeta `json:"metadata,omitempty"`
 
+	// +kubebuilder:validation:XValidation:rule="self == oldSelf",message="OpenStackDataPlaneDeployment Spec is immutable"
 	Spec   OpenStackDataPlaneDeploymentSpec   `json:"spec,omitempty"`
 	Status OpenStackDataPlaneDeploymentStatus `json:"status,omitempty"`
 }
diff --git a/config/crd/bases/dataplane.openstack.org_openstackdataplanedeployments.yaml b/config/crd/bases/dataplane.openstack.org_openstackdataplanedeployments.yaml
index f523704de..096d9fc0c 100644
--- a/config/crd/bases/dataplane.openstack.org_openstackdataplanedeployments.yaml
+++ b/config/crd/bases/dataplane.openstack.org_openstackdataplanedeployments.yaml
@@ -68,6 +68,9 @@ spec:
             - deploymentRequeueTime
             - nodeSets
             type: object
+            x-kubernetes-validations:
+            - message: OpenStackDataPlaneDeployment Spec is immutable
+              rule: self == oldSelf
           status:
             properties:
               conditions: