diff --git a/packages/bedrock-sdk/src/client.ts b/packages/bedrock-sdk/src/client.ts
index c2ab6ebc..cf2f7cac 100644
--- a/packages/bedrock-sdk/src/client.ts
+++ b/packages/bedrock-sdk/src/client.ts
@@ -5,7 +5,7 @@ import { getAuthHeaders } from './auth';
 import { Stream } from './streaming';
 
 const DEFAULT_VERSION = 'bedrock-2023-05-31';
-const MODEL_ENDPOINTS = new Set<string>(['/v1/complete', '/v1/messages']);
+const MODEL_ENDPOINTS = new Set<string>(['/v1/complete', '/v1/messages', '/v1/messages?beta=true']);
 
 export type ClientOptions = Omit<API.ClientOptions, 'apiKey' | 'authToken'> & {
   awsSecretKey?: string | null | undefined;