diff --git a/web/src/reader/core/reader-events.ts b/web/src/reader/core/reader-events.ts
index a008b0e..7c5be4b 100644
--- a/web/src/reader/core/reader-events.ts
+++ b/web/src/reader/core/reader-events.ts
@@ -29,7 +29,7 @@ class EventBus {
     }
   }
 
-  emit(event: ReaderEventType, data?: any): void {
+  emit<T = unknown>(event: ReaderEventType, data?: T): void {
     this.listeners.get(event)?.forEach((handler) => handler(data));
   }