diff --git a/docs/source/reference/router/telemetry/metrics-exporters/new-relic.mdx b/docs/source/reference/router/telemetry/metrics-exporters/new-relic.mdx
index 656360e73c..b22ae19903 100644
--- a/docs/source/reference/router/telemetry/metrics-exporters/new-relic.mdx
+++ b/docs/source/reference/router/telemetry/metrics-exporters/new-relic.mdx
@@ -36,8 +36,7 @@ telemetry:
         endpoint: https://otlp.nr-data.net:4317/v1/metrics
         grpc:
           metadata:
-            api-key:
-              - "<new-relic-api-key>"
+            api-key: "<new-relic-api-key>"
 ```
 
 For more details about New Relic configuration, see [New Relic's docs on OpenTelemetry configuration](https://docs.newrelic.com/docs/more-integrations/open-source-telemetry-integrations/opentelemetry/get-started/opentelemetry-set-up-your-app/#review-settings).
diff --git a/docs/source/reference/router/telemetry/trace-exporters/new-relic.mdx b/docs/source/reference/router/telemetry/trace-exporters/new-relic.mdx
index 6afde09486..2c1a645d3c 100644
--- a/docs/source/reference/router/telemetry/trace-exporters/new-relic.mdx
+++ b/docs/source/reference/router/telemetry/trace-exporters/new-relic.mdx
@@ -23,8 +23,7 @@ telemetry:
         protocol: grpc
         grpc:
           metadata:
-            "api-key":
-              - <new-relic-api-key>
+            api-key: <new-relic-api-key>
 
 ```