diff --git a/cmd/kube-apiserver/app/aggregator.go b/cmd/kube-apiserver/app/aggregator.go
index cc99810ca35..f28b720c037 100644
--- a/cmd/kube-apiserver/app/aggregator.go
+++ b/cmd/kube-apiserver/app/aggregator.go
@@ -225,6 +225,7 @@ var apiVersionPriorities = map[schema.GroupVersion]priority{
 	{Group: "storage.k8s.io", Version: "v1beta1"}:                {group: 16800, version: 9},
 	{Group: "storage.k8s.io", Version: "v1alpha1"}:               {group: 16800, version: 1},
 	{Group: "apiextensions.k8s.io", Version: "v1beta1"}:          {group: 16700, version: 9},
+	{Group: "admissionregistration.k8s.io", Version: "v1beta1"}:  {group: 16700, version: 12},
 	{Group: "admissionregistration.k8s.io", Version: "v1alpha1"}: {group: 16700, version: 9},
 	{Group: "scheduling.k8s.io", Version: "v1alpha1"}:            {group: 16600, version: 9},
 }
diff --git a/cmd/kube-apiserver/app/server.go b/cmd/kube-apiserver/app/server.go
index c327f48bb2e..9eef6445855 100644
--- a/cmd/kube-apiserver/app/server.go
+++ b/cmd/kube-apiserver/app/server.go
@@ -62,6 +62,7 @@ import (
 	"k8s.io/client-go/rest"
 	"k8s.io/kubernetes/cmd/kube-apiserver/app/options"
 	"k8s.io/kubernetes/pkg/api/legacyscheme"
+	"k8s.io/kubernetes/pkg/apis/admissionregistration"
 	"k8s.io/kubernetes/pkg/apis/apps"
 	"k8s.io/kubernetes/pkg/apis/batch"
 	api "k8s.io/kubernetes/pkg/apis/core"
@@ -558,10 +559,13 @@ func BuildStorageFactory(s *options.ServerRunOptions) (*serverstorage.DefaultSto
 	storageFactory, err := kubeapiserver.NewStorageFactory(
 		s.Etcd.StorageConfig, s.Etcd.DefaultStorageMediaType, legacyscheme.Codecs,
 		serverstorage.NewDefaultResourceEncodingConfig(legacyscheme.Registry), storageGroupsToEncodingVersion,
+		// The list includes resources that need to be stored in a different
+		// group version than other resources in the groups.
 		// FIXME (soltysh): this GroupVersionResource override should be configurable
 		[]schema.GroupVersionResource{
 			batch.Resource("cronjobs").WithVersion("v1beta1"),
 			storage.Resource("volumeattachments").WithVersion("v1alpha1"),
+			admissionregistration.Resource("initializerconfigurations").WithVersion("v1alpha1"),
 		},
 		master.DefaultAPIResourceConfigSource(), s.APIEnablement.RuntimeConfig)
 	if err != nil {
diff --git a/pkg/registry/admissionregistration/rest/storage_apiserver.go b/pkg/registry/admissionregistration/rest/storage_apiserver.go
index 9604e22d668..a428a124d73 100644
--- a/pkg/registry/admissionregistration/rest/storage_apiserver.go
+++ b/pkg/registry/admissionregistration/rest/storage_apiserver.go
@@ -18,6 +18,7 @@ package rest
 
 import (
 	admissionregistrationv1alpha1 "k8s.io/api/admissionregistration/v1alpha1"
+	admissionregistrationv1beta1 "k8s.io/api/admissionregistration/v1beta1"
 	"k8s.io/apiserver/pkg/registry/generic"
 	"k8s.io/apiserver/pkg/registry/rest"
 	genericapiserver "k8s.io/apiserver/pkg/server"
@@ -38,7 +39,8 @@ func (p RESTStorageProvider) NewRESTStorage(apiResourceConfigSource serverstorag
 
 	if apiResourceConfigSource.AnyResourcesForVersionEnabled(admissionregistrationv1alpha1.SchemeGroupVersion) {
 		apiGroupInfo.VersionedResourcesStorageMap[admissionregistrationv1alpha1.SchemeGroupVersion.Version] = p.v1alpha1Storage(apiResourceConfigSource, restOptionsGetter)
-		apiGroupInfo.GroupMeta.GroupVersion = admissionregistrationv1alpha1.SchemeGroupVersion
+		apiGroupInfo.VersionedResourcesStorageMap[admissionregistrationv1beta1.SchemeGroupVersion.Version] = p.v1beta1Storage(apiResourceConfigSource, restOptionsGetter)
+		apiGroupInfo.GroupMeta.GroupVersion = admissionregistrationv1beta1.SchemeGroupVersion
 	}
 	return apiGroupInfo, true
 }
@@ -50,6 +52,12 @@ func (p RESTStorageProvider) v1alpha1Storage(apiResourceConfigSource serverstora
 		s := initializerconfigurationstorage.NewREST(restOptionsGetter)
 		storage["initializerconfigurations"] = s
 	}
+	return storage
+}
+
+func (p RESTStorageProvider) v1beta1Storage(apiResourceConfigSource serverstorage.APIResourceConfigSource, restOptionsGetter generic.RESTOptionsGetter) map[string]rest.Storage {
+	version := admissionregistrationv1beta1.SchemeGroupVersion
+	storage := map[string]rest.Storage{}
 	if apiResourceConfigSource.ResourceEnabled(version.WithResource("validatingwebhookconfigurations")) {
 		s := validatingwebhookconfigurationstorage.NewREST(restOptionsGetter)
 		storage["validatingwebhookconfigurations"] = s