diff --git a/packages/core/src/index.ts b/packages/core/src/index.ts
index 26dd030534bc..4f62a1f1f2fc 100644
--- a/packages/core/src/index.ts
+++ b/packages/core/src/index.ts
@@ -17,7 +17,7 @@ export { addGlobalEventProcessor, getCurrentHub, getHubFromCarrier, Hub, makeMai
 export { API } from './api';
 export { BaseClient } from './baseclient';
 export { BackendClass, BaseBackend } from './basebackend';
-export { eventToSentryRequest } from './request';
+export { eventToSentryRequest, SentryRequest } from './request';
 export { initAndBind, ClientClass } from './sdk';
 export { NoopTransport } from './transports/noop';
 
diff --git a/packages/core/src/request.ts b/packages/core/src/request.ts
index c5e09dc8fc34..08884d2f8f54 100644
--- a/packages/core/src/request.ts
+++ b/packages/core/src/request.ts
@@ -4,8 +4,8 @@ import { timestampWithMs } from '@sentry/utils';
 import { API } from './api';
 
 /** A generic client request. */
-interface SentryRequest {
-  body: string;
+export interface SentryRequest {
+  body: string | Buffer;
   url: string;
   // headers would contain auth & content-type headers for @sentry/node, but
   // since @sentry/browser avoids custom headers to prevent CORS preflight