diff --git a/pkg/generated/openapi/zz_generated.openapi.go b/pkg/generated/openapi/zz_generated.openapi.go
index 75f140e2282..d0b935bcaf2 100644
--- a/pkg/generated/openapi/zz_generated.openapi.go
+++ b/pkg/generated/openapi/zz_generated.openapi.go
@@ -44879,7 +44879,7 @@ func schema_k8sio_api_rbac_v1_RoleRef(ref common.ReferenceCallback) common.OpenA
 						},
 					},
 				},
-				Required: []string{"apiGroup", "kind", "name"},
+				Required: []string{"kind", "name"},
 			},
 			VendorExtensible: spec.VendorExtensible{
 				Extensions: spec.Extensions{
@@ -45565,7 +45565,7 @@ func schema_k8sio_api_rbac_v1alpha1_RoleRef(ref common.ReferenceCallback) common
 						},
 					},
 				},
-				Required: []string{"apiGroup", "kind", "name"},
+				Required: []string{"kind", "name"},
 			},
 		},
 	}
@@ -46241,7 +46241,7 @@ func schema_k8sio_api_rbac_v1beta1_RoleRef(ref common.ReferenceCallback) common.
 						},
 					},
 				},
-				Required: []string{"apiGroup", "kind", "name"},
+				Required: []string{"kind", "name"},
 			},
 		},
 	}
diff --git a/staging/src/k8s.io/api/rbac/v1/generated.proto b/staging/src/k8s.io/api/rbac/v1/generated.proto
index a612cd5cc84..1b4c57be17e 100644
--- a/staging/src/k8s.io/api/rbac/v1/generated.proto
+++ b/staging/src/k8s.io/api/rbac/v1/generated.proto
@@ -183,7 +183,7 @@ message RoleList {
 // +structType=atomic
 message RoleRef {
   // APIGroup is the group for the resource being referenced
-  // +required
+  // +optional
   optional string apiGroup = 1;
 
   // Kind is the type of resource being referenced
diff --git a/staging/src/k8s.io/api/rbac/v1/types.go b/staging/src/k8s.io/api/rbac/v1/types.go
index a980bb8be5e..abb9476752e 100644
--- a/staging/src/k8s.io/api/rbac/v1/types.go
+++ b/staging/src/k8s.io/api/rbac/v1/types.go
@@ -102,7 +102,7 @@ type Subject struct {
 // +structType=atomic
 type RoleRef struct {
 	// APIGroup is the group for the resource being referenced
-	// +required
+	// +optional
 	APIGroup string `json:"apiGroup" protobuf:"bytes,1,opt,name=apiGroup"`
 	// Kind is the type of resource being referenced
 	// +required
diff --git a/staging/src/k8s.io/api/rbac/v1alpha1/generated.proto b/staging/src/k8s.io/api/rbac/v1alpha1/generated.proto
index 82ed64df507..6510f0da676 100644
--- a/staging/src/k8s.io/api/rbac/v1alpha1/generated.proto
+++ b/staging/src/k8s.io/api/rbac/v1alpha1/generated.proto
@@ -188,7 +188,7 @@ message RoleList {
 // RoleRef contains information that points to the role being used
 message RoleRef {
   // APIGroup is the group for the resource being referenced
-  // +required
+  // +optional
   optional string apiGroup = 1;
 
   // Kind is the type of resource being referenced
diff --git a/staging/src/k8s.io/api/rbac/v1alpha1/types.go b/staging/src/k8s.io/api/rbac/v1alpha1/types.go
index 8075513cb50..a0e87661398 100644
--- a/staging/src/k8s.io/api/rbac/v1alpha1/types.go
+++ b/staging/src/k8s.io/api/rbac/v1alpha1/types.go
@@ -101,7 +101,7 @@ type Subject struct {
 // RoleRef contains information that points to the role being used
 type RoleRef struct {
 	// APIGroup is the group for the resource being referenced
-	// +required
+	// +optional
 	APIGroup string `json:"apiGroup" protobuf:"bytes,1,opt,name=apiGroup"`
 	// Kind is the type of resource being referenced
 	// +required
diff --git a/staging/src/k8s.io/api/rbac/v1beta1/generated.proto b/staging/src/k8s.io/api/rbac/v1beta1/generated.proto
index 7858ee3016e..0590d2854bb 100644
--- a/staging/src/k8s.io/api/rbac/v1beta1/generated.proto
+++ b/staging/src/k8s.io/api/rbac/v1beta1/generated.proto
@@ -189,7 +189,7 @@ message RoleList {
 // RoleRef contains information that points to the role being used
 message RoleRef {
   // APIGroup is the group for the resource being referenced
-  // +required
+  // +optional
   optional string apiGroup = 1;
 
   // Kind is the type of resource being referenced
diff --git a/staging/src/k8s.io/api/rbac/v1beta1/types.go b/staging/src/k8s.io/api/rbac/v1beta1/types.go
index 4263b54902d..c2b468e0135 100644
--- a/staging/src/k8s.io/api/rbac/v1beta1/types.go
+++ b/staging/src/k8s.io/api/rbac/v1beta1/types.go
@@ -101,7 +101,7 @@ type Subject struct {
 // RoleRef contains information that points to the role being used
 type RoleRef struct {
 	// APIGroup is the group for the resource being referenced
-	// +required
+	// +optional
 	APIGroup string `json:"apiGroup" protobuf:"bytes,1,opt,name=apiGroup"`
 	// Kind is the type of resource being referenced
 	// +required