diff --git a/packages/opentelemetry-metrics/src/export/types.ts b/packages/opentelemetry-metrics/src/export/types.ts
index 8a34a34d1b..33dd539972 100644
--- a/packages/opentelemetry-metrics/src/export/types.ts
+++ b/packages/opentelemetry-metrics/src/export/types.ts
@@ -21,8 +21,12 @@ import { Resource } from '@opentelemetry/resources';
 /** The kind of metric. */
 export enum MetricKind {
   COUNTER,
+  UP_DOWN_COUNTER,
   VALUE_RECORDER,
-  OBSERVER,
+  OBSERVER, // @TODO remove later #1146
+  SUM_OBSERVER,
+  UP_DOWN_SUM_OBSERVER,
+  VALUE_OBSERVER,
 }
 
 /** Sum returns an aggregated sum. */