diff --git a/libs/sdk-js/src/types.ts b/libs/sdk-js/src/types.ts
index 93b025fa4..971d5d836 100644
--- a/libs/sdk-js/src/types.ts
+++ b/libs/sdk-js/src/types.ts
@@ -1,6 +1,13 @@
 import { Checkpoint, Config, Metadata } from "./schema.js";
 
-export type StreamMode = "values" | "messages" | "updates" | "events" | "debug";
+export type StreamMode =
+  | "values"
+  | "messages"
+  | "updates"
+  | "events"
+  | "debug"
+  | "custom"
+  | "messages-tuple";
 export type MultitaskStrategy = "reject" | "interrupt" | "rollback" | "enqueue";
 export type OnConflictBehavior = "raise" | "do_nothing";
 export type OnCompletionBehavior = "complete" | "continue";