diff --git a/source/types.ts b/source/types.ts
index f6f328f..b0b1437 100644
--- a/source/types.ts
+++ b/source/types.ts
@@ -64,7 +64,7 @@ export type DAVResultResponse = DAVResultBaseResponse &
 export interface DAVResultResponseProps {
     displayname: string;
     resourcetype: {
-        collection?: boolean;
+        collection?: unknown;
     };
     getlastmodified?: string;
     getetag?: string;