diff --git a/libs/sdk-js/src/types.ts b/libs/sdk-js/src/types.ts
index 5afd3123a..116a1d244 100644
--- a/libs/sdk-js/src/types.ts
+++ b/libs/sdk-js/src/types.ts
@@ -32,7 +32,7 @@ export interface Command {
   /**
    * An object to update the thread state with.
    */
-  update?: Record<string, unknown> | Record<string, unknown>[];
+  update?: Record<string, unknown> | [string, unknown][];
 
   /**
    * The value to return from an `interrupt` function call.