diff --git a/stackdriver.go b/stackdriver.go
index f169734..4d9eefd 100644
--- a/stackdriver.go
+++ b/stackdriver.go
@@ -365,7 +365,7 @@ func (s *Sink) report(ctx context.Context) {
 				Type:   fmt.Sprintf("custom.googleapis.com/%s%s", s.prefix, name),
 				Labels: labels,
 			},
-			MetricKind: metricpb.MetricDescriptor_GAUGE,
+			MetricKind: metricpb.MetricDescriptor_CUMULATIVE,
 			Resource:   resource,
 			Points: []*monitoringpb.Point{
 				{
diff --git a/stackdriver_test.go b/stackdriver_test.go
index af2a4fd..33ffd9a 100644
--- a/stackdriver_test.go
+++ b/stackdriver_test.go
@@ -365,7 +365,7 @@ func TestSample(t *testing.T) {
 								Metric: &metricpb.Metric{
 									Type: "custom.googleapis.com/go-metrics/foo_bar_counter",
 								},
-								MetricKind: metricpb.MetricDescriptor_GAUGE,
+								MetricKind: metricpb.MetricDescriptor_CUMULATIVE,
 								Points: []*monitoringpb.Point{
 									{
 										Value: &monitoringpb.TypedValue{
@@ -402,7 +402,7 @@ func TestSample(t *testing.T) {
 										"env": "dev",
 									},
 								},
-								MetricKind: metricpb.MetricDescriptor_GAUGE,
+								MetricKind: metricpb.MetricDescriptor_CUMULATIVE,
 								Points: []*monitoringpb.Point{
 									{
 										Value: &monitoringpb.TypedValue{
@@ -438,7 +438,7 @@ func TestSample(t *testing.T) {
 								Metric: &metricpb.Metric{
 									Type: "custom.googleapis.com/go-metrics/foo_bar_counter",
 								},
-								MetricKind: metricpb.MetricDescriptor_GAUGE,
+								MetricKind: metricpb.MetricDescriptor_CUMULATIVE,
 								Points: []*monitoringpb.Point{
 									{
 										Value: &monitoringpb.TypedValue{
@@ -773,7 +773,7 @@ func TestExtract(t *testing.T) {
 										"method": "bar",
 									},
 								},
-								MetricKind: metricpb.MetricDescriptor_GAUGE,
+								MetricKind: metricpb.MetricDescriptor_CUMULATIVE,
 								Points: []*monitoringpb.Point{
 									{
 										Value: &monitoringpb.TypedValue{
@@ -914,7 +914,7 @@ func TestExtract(t *testing.T) {
 										"method": "baz",
 									},
 								},
-								MetricKind: metricpb.MetricDescriptor_GAUGE,
+								MetricKind: metricpb.MetricDescriptor_CUMULATIVE,
 								Points: []*monitoringpb.Point{
 									{
 										Value: &monitoringpb.TypedValue{