diff --git a/apis/duck/v1/podspec_types.go b/apis/duck/v1/podspec_types.go
index 0dd9ec3386..ff587a727f 100644
--- a/apis/duck/v1/podspec_types.go
+++ b/apis/duck/v1/podspec_types.go
@@ -20,6 +20,7 @@ import (
 	corev1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/schema"
 
 	"knative.dev/pkg/apis"
 	"knative.dev/pkg/apis/duck"
@@ -44,7 +45,8 @@ type WithPod struct {
 
 // WithPodSpec is the shell around the PodSpecable within WithPod.
 type WithPodSpec struct {
-	Template PodSpecable `json:"template,omitempty"`
+	Selector *metav1.LabelSelector `json:"selector"`
+	Template PodSpecable           `json:"template,omitempty"`
 }
 
 // Assert that we implement the interfaces necessary to
@@ -82,6 +84,11 @@ func (*WithPod) GetListType() runtime.Object {
 	return &WithPodList{}
 }
 
+// GetGroupVersionKind returns a GroupVersionKind.
+func (*WithPod) GetGroupVersionKind() schema.GroupVersionKind {
+	return SchemeGroupVersion.WithKind("WithPod")
+}
+
 // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
 
 // WithPodList is a list of WithPod resources
diff --git a/apis/duck/v1/zz_generated.deepcopy.go b/apis/duck/v1/zz_generated.deepcopy.go
index 2fcfbed776..7bd54485bb 100644
--- a/apis/duck/v1/zz_generated.deepcopy.go
+++ b/apis/duck/v1/zz_generated.deepcopy.go
@@ -21,6 +21,7 @@ limitations under the License.
 package v1
 
 import (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	runtime "k8s.io/apimachinery/pkg/runtime"
 	apis "knative.dev/pkg/apis"
 )
@@ -483,6 +484,11 @@ func (in *WithPodList) DeepCopyObject() runtime.Object {
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *WithPodSpec) DeepCopyInto(out *WithPodSpec) {
 	*out = *in
+	if in.Selector != nil {
+		in, out := &in.Selector, &out.Selector
+		*out = new(metav1.LabelSelector)
+		(*in).DeepCopyInto(*out)
+	}
 	in.Template.DeepCopyInto(&out.Template)
 	return
 }