diff --git a/api/src/metrics/Metric.ts b/api/src/metrics/Metric.ts
index 00d4ef215e..23118369fa 100644
--- a/api/src/metrics/Metric.ts
+++ b/api/src/metrics/Metric.ts
@@ -38,9 +38,6 @@ export interface MetricOptions {
    */
   unit?: string;
 
-  /** The list of label keys for the Metric. */
-  labelKeys?: string[];
-
   /** The map of constant labels for the Metric. */
   constantLabels?: Map<string, string>;