diff --git a/packages/notion-types/src/collection.ts b/packages/notion-types/src/collection.ts
index dd59e750..20ae4055 100644
--- a/packages/notion-types/src/collection.ts
+++ b/packages/notion-types/src/collection.ts
@@ -39,6 +39,7 @@ export interface Collection {
   copied_from: string
   template_pages?: Array<ID>
 
+  cover?: string;
   format?: {
     collection_page_properties?: Array<{
       property: PropertyID