diff --git a/plugin/pkg/admission/gc/BUILD b/plugin/pkg/admission/gc/BUILD
index 2d71285ed05..354e386505b 100644
--- a/plugin/pkg/admission/gc/BUILD
+++ b/plugin/pkg/admission/gc/BUILD
@@ -27,11 +27,10 @@ go_test(
     srcs = ["gc_admission_test.go"],
     embed = [":go_default_library"],
     deps = [
-        "//pkg/api/legacyscheme:go_default_library",
         "//pkg/apis/core:go_default_library",
-        "//pkg/client/clientset_generated/internalclientset:go_default_library",
         "//pkg/kubeapiserver/admission:go_default_library",
-        "//staging/src/k8s.io/apimachinery/pkg/api/meta/testrestmapper:go_default_library",
+        "//staging/src/k8s.io/api/core/v1:go_default_library",
+        "//staging/src/k8s.io/api/extensions/v1beta1:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/runtime:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/runtime/schema:go_default_library",
@@ -39,6 +38,9 @@ go_test(
         "//staging/src/k8s.io/apiserver/pkg/admission/initializer:go_default_library",
         "//staging/src/k8s.io/apiserver/pkg/authentication/user:go_default_library",
         "//staging/src/k8s.io/apiserver/pkg/authorization/authorizer:go_default_library",
+        "//staging/src/k8s.io/client-go/discovery/fake:go_default_library",
+        "//staging/src/k8s.io/client-go/restmapper:go_default_library",
+        "//staging/src/k8s.io/client-go/testing:go_default_library",
     ],
 )
 
diff --git a/plugin/pkg/admission/gc/gc_admission_test.go b/plugin/pkg/admission/gc/gc_admission_test.go
index 08deb51dea2..034e5179e45 100644
--- a/plugin/pkg/admission/gc/gc_admission_test.go
+++ b/plugin/pkg/admission/gc/gc_admission_test.go
@@ -17,10 +17,12 @@ limitations under the License.
 package gc
 
 import (
+	"fmt"
 	"strings"
 	"testing"
 
-	"k8s.io/apimachinery/pkg/api/meta/testrestmapper"
+	corev1 "k8s.io/api/core/v1"
+	extensionv1beta1 "k8s.io/api/extensions/v1beta1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/schema"
@@ -28,13 +30,11 @@ import (
 	"k8s.io/apiserver/pkg/admission/initializer"
 	"k8s.io/apiserver/pkg/authentication/user"
 	"k8s.io/apiserver/pkg/authorization/authorizer"
-	"k8s.io/kubernetes/pkg/api/legacyscheme"
+	fakediscovery "k8s.io/client-go/discovery/fake"
+	"k8s.io/client-go/restmapper"
+	coretesting "k8s.io/client-go/testing"
 	api "k8s.io/kubernetes/pkg/apis/core"
 	kubeadmission "k8s.io/kubernetes/pkg/kubeapiserver/admission"
-
-	// Manually initialize legacy scheme to make test rest mapper work with built-in resources.
-	// See issue #70192 for more details
-	_ "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
 )
 
 type fakeAuthorizer struct{}
@@ -101,7 +101,30 @@ func newGCPermissionsEnforcement() (*gcPermissionsEnforcement, error) {
 	}
 
 	genericPluginInitializer := initializer.New(nil, nil, fakeAuthorizer{}, nil)
-	pluginInitializer := kubeadmission.NewPluginInitializer(nil, testrestmapper.TestOnlyStaticRESTMapper(legacyscheme.Scheme), nil)
+	fakeDiscoveryClient := &fakediscovery.FakeDiscovery{Fake: &coretesting.Fake{}}
+	fakeDiscoveryClient.Resources = []*metav1.APIResourceList{
+		{
+			GroupVersion: corev1.SchemeGroupVersion.String(),
+			APIResources: []metav1.APIResource{
+				{Name: "nodes", Namespaced: false, Kind: "Node"},
+				{Name: "pods", Namespaced: true, Kind: "Pod"},
+				{Name: "replicationcontrollers", Namespaced: true, Kind: "ReplicationController"},
+			},
+		},
+		{
+			GroupVersion: extensionv1beta1.SchemeGroupVersion.String(),
+			APIResources: []metav1.APIResource{
+				{Name: "daemonsets", Namespaced: true, Kind: "DaemonSet"},
+			},
+		},
+	}
+
+	restMapperRes, err := restmapper.GetAPIGroupResources(fakeDiscoveryClient)
+	if err != nil {
+		return nil, fmt.Errorf("unexpected error while constructing resource list from fake discovery client: %v", err)
+	}
+	restMapper := restmapper.NewDiscoveryRESTMapper(restMapperRes)
+	pluginInitializer := kubeadmission.NewPluginInitializer(nil, restMapper, nil)
 	initializersChain := admission.PluginInitializers{}
 	initializersChain = append(initializersChain, genericPluginInitializer)
 	initializersChain = append(initializersChain, pluginInitializer)