diff --git a/pkg/apis/k8s.cni.cncf.io/v1beta2/types.go b/pkg/apis/k8s.cni.cncf.io/v1beta2/types.go
index da2eae3..a4a2577 100644
--- a/pkg/apis/k8s.cni.cncf.io/v1beta2/types.go
+++ b/pkg/apis/k8s.cni.cncf.io/v1beta2/types.go
@@ -100,7 +100,7 @@ type MultiNetworkPolicyPort struct {
 	Port *intstr.IntOrString `json:"port,omitempty"`
 
 	// +optional
-	EndPort *int `json:"endPort,omitempty"`
+	EndPort *int32 `json:"endPort,omitempty"`
 }
 
 // IPBlock ...
diff --git a/pkg/apis/k8s.cni.cncf.io/v1beta2/zz_generated.deepcopy.go b/pkg/apis/k8s.cni.cncf.io/v1beta2/zz_generated.deepcopy.go
index 0fd3494..b36f850 100644
--- a/pkg/apis/k8s.cni.cncf.io/v1beta2/zz_generated.deepcopy.go
+++ b/pkg/apis/k8s.cni.cncf.io/v1beta2/zz_generated.deepcopy.go
@@ -215,7 +215,7 @@ func (in *MultiNetworkPolicyPort) DeepCopyInto(out *MultiNetworkPolicyPort) {
 	}
 	if in.EndPort != nil {
 		in, out := &in.EndPort, &out.EndPort
-		*out = new(int)
+		*out = new(int32)
 		**out = **in
 	}
 	return
diff --git a/pkg/client/clientset/versioned/fake/register.go b/pkg/client/clientset/versioned/fake/register.go
index bd4f6bb..df7d084 100644
--- a/pkg/client/clientset/versioned/fake/register.go
+++ b/pkg/client/clientset/versioned/fake/register.go
@@ -39,14 +39,14 @@ var localSchemeBuilder = runtime.SchemeBuilder{
 // AddToScheme adds all types of this clientset into the given scheme. This allows composition
 // of clientsets, like in:
 //
-//   import (
-//     "k8s.io/client-go/kubernetes"
-//     clientsetscheme "k8s.io/client-go/kubernetes/scheme"
-//     aggregatorclientsetscheme "k8s.io/kube-aggregator/pkg/client/clientset_generated/clientset/scheme"
-//   )
+//	import (
+//	  "k8s.io/client-go/kubernetes"
+//	  clientsetscheme "k8s.io/client-go/kubernetes/scheme"
+//	  aggregatorclientsetscheme "k8s.io/kube-aggregator/pkg/client/clientset_generated/clientset/scheme"
+//	)
 //
-//   kclientset, _ := kubernetes.NewForConfig(c)
-//   _ = aggregatorclientsetscheme.AddToScheme(clientsetscheme.Scheme)
+//	kclientset, _ := kubernetes.NewForConfig(c)
+//	_ = aggregatorclientsetscheme.AddToScheme(clientsetscheme.Scheme)
 //
 // After this, RawExtensions in Kubernetes types will serialize kube-aggregator types
 // correctly.
diff --git a/pkg/client/clientset/versioned/scheme/register.go b/pkg/client/clientset/versioned/scheme/register.go
index 1ddd304..ca9dbcb 100644
--- a/pkg/client/clientset/versioned/scheme/register.go
+++ b/pkg/client/clientset/versioned/scheme/register.go
@@ -39,14 +39,14 @@ var localSchemeBuilder = runtime.SchemeBuilder{
 // AddToScheme adds all types of this clientset into the given scheme. This allows composition
 // of clientsets, like in:
 //
-//   import (
-//     "k8s.io/client-go/kubernetes"
-//     clientsetscheme "k8s.io/client-go/kubernetes/scheme"
-//     aggregatorclientsetscheme "k8s.io/kube-aggregator/pkg/client/clientset_generated/clientset/scheme"
-//   )
+//	import (
+//	  "k8s.io/client-go/kubernetes"
+//	  clientsetscheme "k8s.io/client-go/kubernetes/scheme"
+//	  aggregatorclientsetscheme "k8s.io/kube-aggregator/pkg/client/clientset_generated/clientset/scheme"
+//	)
 //
-//   kclientset, _ := kubernetes.NewForConfig(c)
-//   _ = aggregatorclientsetscheme.AddToScheme(clientsetscheme.Scheme)
+//	kclientset, _ := kubernetes.NewForConfig(c)
+//	_ = aggregatorclientsetscheme.AddToScheme(clientsetscheme.Scheme)
 //
 // After this, RawExtensions in Kubernetes types will serialize kube-aggregator types
 // correctly.
diff --git a/scheme.yml b/scheme.yml
index ff7f800..65cf6be 100644
--- a/scheme.yml
+++ b/scheme.yml
@@ -501,6 +501,7 @@ spec:
                               x-kubernetes-int-or-string: true
                             endPort:
                               type: integer
+                              format: int32
                               description: "If set, indicates that the range of ports from
                                 port to endPort, inclusive, should be allowed by the policy.
                                 This field cannot be defined if the port field is not
@@ -822,6 +823,7 @@ spec:
                               x-kubernetes-int-or-string: true
                             endPort:
                               type: integer
+                              format: int32
                               description: "If set, indicates that the range of ports from
                                 port to endPort, inclusive, should be allowed by the policy.
                                 This field cannot be defined if the port field is not