diff --git a/types/rox-node/index.d.ts b/types/rox-node/index.d.ts
index 80395b22fd..69a56d6364 100644
--- a/types/rox-node/index.d.ts
+++ b/types/rox-node/index.d.ts
@@ -92,7 +92,7 @@ export function setDynamicCustomPropertyRule(
  *
  * https://support.rollout.io/docs/nodejs-api#section-fetch
  */
-export function fetch(): Promise<unknown>;
+export function fetch(): void;
 
 /**
  * Creates a new Flag
diff --git a/types/rox-node/rox-node-tests.ts b/types/rox-node/rox-node-tests.ts
index 158167ccd6..5d22a02a8e 100644
--- a/types/rox-node/rox-node-tests.ts
+++ b/types/rox-node/rox-node-tests.ts
@@ -22,6 +22,8 @@ Rox.setup('ROLLOUT_IO_KEY', {
   configurationFetchedHandler,
 }).then(linkTargetGroupAttributes);
 
+Rox.fetch();
+
 Rox.dynamicApi.isEnabled('system.repotAnalytics', false);
 Rox.dynamicApi.value('ui.textColor', 'red');