diff --git a/packages/vertex-sdk/yarn.lock b/packages/vertex-sdk/yarn.lock
index 51c851bf..14d4ac35 100644
--- a/packages/vertex-sdk/yarn.lock
+++ b/packages/vertex-sdk/yarn.lock
@@ -16,7 +16,7 @@
     "@jridgewell/trace-mapping" "^0.3.9"
 
 "@anthropic-ai/sdk@file:../../dist":
-  version "0.12.3"
+  version "0.12.4"
   dependencies:
     "@types/node" "^18.11.18"
     "@types/node-fetch" "^2.6.4"
diff --git a/src/streaming.ts b/src/streaming.ts
index 3452ebf1..637712af 100644
--- a/src/streaming.ts
+++ b/src/streaming.ts
@@ -4,7 +4,7 @@ import { AnthropicError } from './error';
 import { safeJSON, createResponseHeaders } from '@anthropic-ai/sdk/core';
 import { APIError } from '@anthropic-ai/sdk/error';
 
-export type Bytes = string | ArrayBuffer | Uint8Array | Buffer | null | undefined;
+type Bytes = string | ArrayBuffer | Uint8Array | Buffer | null | undefined;
 
 export type ServerSentEvent = {
   event: string | null;