diff --git a/types/newrelic/index.d.ts b/types/newrelic/index.d.ts
index df8b734d70..85224a8392 100644
--- a/types/newrelic/index.d.ts
+++ b/types/newrelic/index.d.ts
@@ -6,6 +6,7 @@
 //                 Kyle Scully <https://github.com/zieka>
 //                 Kenneth Aasan <https://github.com/kennethaasan>
 //                 Jon Flaishans <https://github.com/funkswing>
+//                 Dylan Smith <https://github.com/dylansmith>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 // https://docs.newrelic.com/docs/agents/nodejs-agent/api-guides/nodejs-agent-api
@@ -337,7 +338,7 @@ export const instrumentMessages: Instrument;
  */
 export function shutdown(cb?: (error?: Error) => void): void;
 export function shutdown(
-    options?: { collectPendingData?: boolean; timeout?: number },
+    options?: { collectPendingData?: boolean; timeout?: number; waitForIdle?: boolean },
     cb?: (error?: Error) => void,
 ): void;
 
diff --git a/types/newrelic/newrelic-tests.ts b/types/newrelic/newrelic-tests.ts
index efa47f17c6..f987472236 100644
--- a/types/newrelic/newrelic-tests.ts
+++ b/types/newrelic/newrelic-tests.ts
@@ -109,6 +109,10 @@ newrelic.shutdown({ collectPendingData: true, timeout: 3000 });
 newrelic.shutdown({ collectPendingData: true, timeout: 3000 }, err => {
     const error: Error | undefined = err;
 });
+newrelic.shutdown({ collectPendingData: true, timeout: 3000, waitForIdle: true });
+newrelic.shutdown({ collectPendingData: true, timeout: 3000, waitForIdle: true }, err => {
+    const error: Error | undefined = err;
+});
 newrelic.shutdown(err => {
     const error: Error | undefined = err;
 });