diff --git a/packages/core/src/lib/channel.ts b/packages/core/src/lib/channel.ts
index bea4e57e..1917f54b 100644
--- a/packages/core/src/lib/channel.ts
+++ b/packages/core/src/lib/channel.ts
@@ -87,6 +87,8 @@ declare class ChannelStreams {
 }
 
 export declare class ChannelContext {
+  startCursor: string;
+  endCursor: string;
   readBy: { [key: string]: number[] };
 }