diff --git a/go.mod b/go.mod
index 91be922e..a3b52246 100644
--- a/go.mod
+++ b/go.mod
@@ -21,5 +21,5 @@ require (
 	k8s.io/code-generator v0.21.4
 	k8s.io/kube-openapi v0.0.0-20210305001622-591a79e4bda7
 	knative.dev/hack v0.0.0-20210806075220-815cd312d65c
-	knative.dev/pkg v0.0.0-20210907232433-26db1ba732f6
+	knative.dev/pkg v0.0.0-20210908025933-71508fc69a57
 )
diff --git a/go.sum b/go.sum
index abacad09..43f2fb0b 100644
--- a/go.sum
+++ b/go.sum
@@ -978,8 +978,8 @@ k8s.io/utils v0.0.0-20201110183641-67b214c5f920 h1:CbnUZsM497iRC5QMVkHwyl8s2tB3g
 k8s.io/utils v0.0.0-20201110183641-67b214c5f920/go.mod h1:jPW/WVKK9YHAvNhRxK0md/EJ228hCsBRufyofKtW8HA=
 knative.dev/hack v0.0.0-20210806075220-815cd312d65c h1:nOXoDWAAItwr4o0dp3nHr6skgpVD4IvME/UX84YNl5k=
 knative.dev/hack v0.0.0-20210806075220-815cd312d65c/go.mod h1:PHt8x8yX5Z9pPquBEfIj0X66f8iWkWfR0S/sarACJrI=
-knative.dev/pkg v0.0.0-20210907232433-26db1ba732f6 h1:nLHaEQP+SNW4E6zsgSS6wwpHNpSpag8vw8SSsH4ILw8=
-knative.dev/pkg v0.0.0-20210907232433-26db1ba732f6/go.mod h1:jMSqkNMsrzuy+XR4Yr/BMy7SDVbUOl3KKB6+5MR+ZU8=
+knative.dev/pkg v0.0.0-20210908025933-71508fc69a57 h1:du+do3to2zboxuk0Uj8Xvf2onOxthyaBSr98+hVB7z4=
+knative.dev/pkg v0.0.0-20210908025933-71508fc69a57/go.mod h1:jMSqkNMsrzuy+XR4Yr/BMy7SDVbUOl3KKB6+5MR+ZU8=
 pgregory.net/rapid v0.3.3/go.mod h1:UYpPVyjFHzYBGHIxLFoupi8vwk6rXNzRY9OMvVxFIOU=
 rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
 rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
diff --git a/vendor/knative.dev/pkg/apis/duck/v1/podspec_defaults.go b/vendor/knative.dev/pkg/apis/duck/v1/podspec_defaults.go
index 9fc3f3ce..1c6acb1e 100644
--- a/vendor/knative.dev/pkg/apis/duck/v1/podspec_defaults.go
+++ b/vendor/knative.dev/pkg/apis/duck/v1/podspec_defaults.go
@@ -30,7 +30,7 @@ func (wp *WithPod) SetDefaults(ctx context.Context) {
 	}
 }
 
-// psvKey is used for associating a PodSpecDefaulter with a context.Context
+// psdKey is used for associating a PodSpecDefaulter with a context.Context
 type psdKey struct{}
 
 func WithPodSpecDefaulter(ctx context.Context, psd PodSpecDefaulter) context.Context {
@@ -45,3 +45,29 @@ func GetPodSpecDefaulter(ctx context.Context) PodSpecDefaulter {
 	}
 	return untyped.(PodSpecDefaulter)
 }
+
+// PodDefaulter is a callback to validate a Pod.
+type PodDefaulter func(context.Context, *Pod)
+
+// SetDefaults implements apis.Defaultable
+func (p *Pod) SetDefaults(ctx context.Context) {
+	if pd := GetPodDefaulter(ctx); pd != nil {
+		pd(ctx, p)
+	}
+}
+
+// pdKey is used for associating a PodDefaulter with a context.Context
+type pdKey struct{}
+
+func WithPodDefaulter(ctx context.Context, pd PodDefaulter) context.Context {
+	return context.WithValue(ctx, pdKey{}, pd)
+}
+
+// GetPodDefaulter extracts the PodDefaulter from the context.
+func GetPodDefaulter(ctx context.Context) PodDefaulter {
+	untyped := ctx.Value(pdKey{})
+	if untyped == nil {
+		return nil
+	}
+	return untyped.(PodDefaulter)
+}
diff --git a/vendor/knative.dev/pkg/apis/duck/v1/podspec_types.go b/vendor/knative.dev/pkg/apis/duck/v1/podspec_types.go
index b822a484..7b1946e5 100644
--- a/vendor/knative.dev/pkg/apis/duck/v1/podspec_types.go
+++ b/vendor/knative.dev/pkg/apis/duck/v1/podspec_types.go
@@ -45,9 +45,6 @@ type WithPod struct {
 	Spec WithPodSpec `json:"spec,omitempty"`
 }
 
-var _ apis.Validatable = (*WithPod)(nil)
-var _ apis.Defaultable = (*WithPod)(nil)
-
 // WithPodSpec is the shell around the PodSpecable within WithPod.
 type WithPodSpec struct {
 	Template PodSpecable `json:"template,omitempty"`
@@ -55,6 +52,8 @@ type WithPodSpec struct {
 
 // Verify WithPod resources meet duck contracts.
 var (
+	_ apis.Validatable      = (*WithPod)(nil)
+	_ apis.Defaultable      = (*WithPod)(nil)
 	_ apis.Listable         = (*WithPod)(nil)
 	_ ducktypes.Populatable = (*WithPod)(nil)
 )
@@ -95,3 +94,52 @@ type WithPodList struct {
 
 	Items []WithPod `json:"items"`
 }
+
+// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
+
+// Pod is a wrapper around Pod-like resource, which supports our interfaces
+// for webhooks
+type Pod struct {
+	metav1.TypeMeta   `json:",inline"`
+	metav1.ObjectMeta `json:"metadata,omitempty"`
+
+	Spec corev1.PodSpec `json:"spec,omitempty"`
+}
+
+// Verify Pod resources meet duck contracts.
+var (
+	_ apis.Validatable      = (*Pod)(nil)
+	_ apis.Defaultable      = (*Pod)(nil)
+	_ apis.Listable         = (*Pod)(nil)
+	_ ducktypes.Populatable = (*Pod)(nil)
+)
+
+// GetFullType implements duck.Implementable
+func (p *Pod) GetFullType() ducktypes.Populatable {
+	return &Pod{}
+}
+
+// Populate implements duck.Populatable
+func (p *Pod) Populate() {
+	p.Spec = corev1.PodSpec{
+		Containers: []corev1.Container{{
+			Name:  "container-name",
+			Image: "container-image:latest",
+		}},
+	}
+}
+
+// GetListType implements apis.Listable
+func (p *Pod) GetListType() runtime.Object {
+	return &PodList{}
+}
+
+// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
+
+// PodList is a list of WithPod resources
+type PodList struct {
+	metav1.TypeMeta `json:",inline"`
+	metav1.ListMeta `json:"metadata"`
+
+	Items []WithPod `json:"items"`
+}
diff --git a/vendor/knative.dev/pkg/apis/duck/v1/podspec_validation.go b/vendor/knative.dev/pkg/apis/duck/v1/podspec_validation.go
index 3f8f28b6..1ec6ef48 100644
--- a/vendor/knative.dev/pkg/apis/duck/v1/podspec_validation.go
+++ b/vendor/knative.dev/pkg/apis/duck/v1/podspec_validation.go
@@ -48,3 +48,30 @@ func GetPodSpecValidator(ctx context.Context) PodSpecValidator {
 	}
 	return untyped.(PodSpecValidator)
 }
+
+// PodValidator is a callback to validate Pods.
+type PodValidator func(context.Context, *Pod) *apis.FieldError
+
+// Validate implements apis.Validatable
+func (p *Pod) Validate(ctx context.Context) *apis.FieldError {
+	if pv := GetPodValidator(ctx); pv != nil {
+		return pv(ctx, p)
+	}
+	return nil
+}
+
+// pvKey is used for associating a PodValidator with a context.Context
+type pvKey struct{}
+
+func WithPodValidator(ctx context.Context, pv PodValidator) context.Context {
+	return context.WithValue(ctx, pvKey{}, pv)
+}
+
+// GetPodValidator extracts the PodValidator from the context.
+func GetPodValidator(ctx context.Context) PodValidator {
+	untyped := ctx.Value(pvKey{})
+	if untyped == nil {
+		return nil
+	}
+	return untyped.(PodValidator)
+}
diff --git a/vendor/knative.dev/pkg/apis/duck/v1/zz_generated.deepcopy.go b/vendor/knative.dev/pkg/apis/duck/v1/zz_generated.deepcopy.go
index ae98f046..22088b21 100644
--- a/vendor/knative.dev/pkg/apis/duck/v1/zz_generated.deepcopy.go
+++ b/vendor/knative.dev/pkg/apis/duck/v1/zz_generated.deepcopy.go
@@ -367,6 +367,66 @@ func (in *KResourceList) DeepCopyObject() runtime.Object {
 	return nil
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *Pod) DeepCopyInto(out *Pod) {
+	*out = *in
+	out.TypeMeta = in.TypeMeta
+	in.ObjectMeta.DeepCopyInto(&out.ObjectMeta)
+	in.Spec.DeepCopyInto(&out.Spec)
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new Pod.
+func (in *Pod) DeepCopy() *Pod {
+	if in == nil {
+		return nil
+	}
+	out := new(Pod)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object.
+func (in *Pod) DeepCopyObject() runtime.Object {
+	if c := in.DeepCopy(); c != nil {
+		return c
+	}
+	return nil
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *PodList) DeepCopyInto(out *PodList) {
+	*out = *in
+	out.TypeMeta = in.TypeMeta
+	in.ListMeta.DeepCopyInto(&out.ListMeta)
+	if in.Items != nil {
+		in, out := &in.Items, &out.Items
+		*out = make([]WithPod, len(*in))
+		for i := range *in {
+			(*in)[i].DeepCopyInto(&(*out)[i])
+		}
+	}
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new PodList.
+func (in *PodList) DeepCopy() *PodList {
+	if in == nil {
+		return nil
+	}
+	out := new(PodList)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object.
+func (in *PodList) DeepCopyObject() runtime.Object {
+	if c := in.DeepCopy(); c != nil {
+		return c
+	}
+	return nil
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *PodSpecable) DeepCopyInto(out *PodSpecable) {
 	*out = *in
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 7b6388c2..c144c8b9 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -612,7 +612,7 @@ k8s.io/utils/trace
 # knative.dev/hack v0.0.0-20210806075220-815cd312d65c
 ## explicit
 knative.dev/hack
-# knative.dev/pkg v0.0.0-20210907232433-26db1ba732f6
+# knative.dev/pkg v0.0.0-20210908025933-71508fc69a57
 ## explicit
 knative.dev/pkg/apis
 knative.dev/pkg/apis/duck