diff --git a/staging/src/k8s.io/metrics/pkg/apis/metrics/doc.go b/staging/src/k8s.io/metrics/pkg/apis/metrics/doc.go
index 2cae86d6520..548724f38d6 100644
--- a/staging/src/k8s.io/metrics/pkg/apis/metrics/doc.go
+++ b/staging/src/k8s.io/metrics/pkg/apis/metrics/doc.go
@@ -14,8 +14,6 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-// TODO: this needs to be cross-registered as metrics.metrics.k8s.io
-
 // +k8s:deepcopy-gen=package,register
-
+// +groupName=metrics.k8s.io
 package metrics
diff --git a/staging/src/k8s.io/metrics/pkg/apis/metrics/register.go b/staging/src/k8s.io/metrics/pkg/apis/metrics/register.go
index c6b30fd8eb2..9729b08fc59 100644
--- a/staging/src/k8s.io/metrics/pkg/apis/metrics/register.go
+++ b/staging/src/k8s.io/metrics/pkg/apis/metrics/register.go
@@ -22,7 +22,7 @@ import (
 )
 
 // GroupName is the group name use in this package
-const GroupName = "metrics"
+const GroupName = "metrics.k8s.io"
 
 // SchemeGroupVersion is group version used to register these objects
 var SchemeGroupVersion = schema.GroupVersion{Group: GroupName, Version: runtime.APIVersionInternal}
diff --git a/staging/src/k8s.io/metrics/pkg/apis/metrics/v1alpha1/register.go b/staging/src/k8s.io/metrics/pkg/apis/metrics/v1alpha1/register.go
index 686d273dc47..306ed8c3df2 100644
--- a/staging/src/k8s.io/metrics/pkg/apis/metrics/v1alpha1/register.go
+++ b/staging/src/k8s.io/metrics/pkg/apis/metrics/v1alpha1/register.go
@@ -23,7 +23,7 @@ import (
 )
 
 // GroupName is the group name use in this package
-const GroupName = "metrics"
+const GroupName = "metrics.k8s.io"
 
 // SchemeGroupVersion is group version used to register these objects
 var SchemeGroupVersion = schema.GroupVersion{Group: GroupName, Version: "v1alpha1"}
diff --git a/staging/src/k8s.io/metrics/pkg/apis/metrics/v1beta1/register.go b/staging/src/k8s.io/metrics/pkg/apis/metrics/v1beta1/register.go
index 63c03b4f25a..0db1e78b395 100644
--- a/staging/src/k8s.io/metrics/pkg/apis/metrics/v1beta1/register.go
+++ b/staging/src/k8s.io/metrics/pkg/apis/metrics/v1beta1/register.go
@@ -23,7 +23,7 @@ import (
 )
 
 // GroupName is the group name use in this package
-const GroupName = "metrics"
+const GroupName = "metrics.k8s.io"
 
 // SchemeGroupVersion is group version used to register these objects
 var SchemeGroupVersion = schema.GroupVersion{Group: GroupName, Version: "v1beta1"}