diff --git a/plugin/pkg/admission/network/defaultingressclass/admission.go b/plugin/pkg/admission/network/defaultingressclass/admission.go
index 454e703ed9e..7118ab275c4 100644
--- a/plugin/pkg/admission/network/defaultingressclass/admission.go
+++ b/plugin/pkg/admission/network/defaultingressclass/admission.go
@@ -133,7 +133,7 @@ func getDefaultClass(lister networkingv1listers.IngressClassLister) (*networking
 
 	defaultClasses := []*networkingv1.IngressClass{}
 	for _, class := range list {
-		if class.Annotations[networkingv1beta1.AnnotationIsDefaultIngressClass] == "true" {
+		if class.Annotations[networkingv1.AnnotationIsDefaultIngressClass] == "true" {
 			defaultClasses = append(defaultClasses, class)
 		}
 	}
diff --git a/plugin/pkg/admission/network/defaultingressclass/admission_test.go b/plugin/pkg/admission/network/defaultingressclass/admission_test.go
index eea5118f97b..7d97b75fa0b 100644
--- a/plugin/pkg/admission/network/defaultingressclass/admission_test.go
+++ b/plugin/pkg/admission/network/defaultingressclass/admission_test.go
@@ -43,7 +43,7 @@ func TestAdmission(t *testing.T) {
 		ObjectMeta: metav1.ObjectMeta{
 			Name: "default1",
 			Annotations: map[string]string{
-				networkingv1beta1.AnnotationIsDefaultIngressClass: "true",
+				networkingv1.AnnotationIsDefaultIngressClass: "true",
 			},
 		},
 	}
@@ -51,7 +51,7 @@ func TestAdmission(t *testing.T) {
 		ObjectMeta: metav1.ObjectMeta{
 			Name: "default2",
 			Annotations: map[string]string{
-				networkingv1beta1.AnnotationIsDefaultIngressClass: "true",
+				networkingv1.AnnotationIsDefaultIngressClass: "true",
 			},
 		},
 	}
@@ -63,7 +63,7 @@ func TestAdmission(t *testing.T) {
 		ObjectMeta: metav1.ObjectMeta{
 			Name: "nondefault1",
 			Annotations: map[string]string{
-				networkingv1beta1.AnnotationIsDefaultIngressClass: "false",
+				networkingv1.AnnotationIsDefaultIngressClass: "false",
 			},
 		},
 	}
@@ -84,7 +84,7 @@ func TestAdmission(t *testing.T) {
 		ObjectMeta: metav1.ObjectMeta{
 			Name: "nondefault2",
 			Annotations: map[string]string{
-				networkingv1beta1.AnnotationIsDefaultIngressClass: "",
+				networkingv1.AnnotationIsDefaultIngressClass: "",
 			},
 		},
 	}