diff --git a/lib/resolve-author.js b/lib/resolve-author.js
index 051a5ef..cfdd9f6 100644
--- a/lib/resolve-author.js
+++ b/lib/resolve-author.js
@@ -92,8 +92,8 @@ export async function resolveAuthor(
 
   // Strategy 2: Use author URL from timeline or notifications
   if (collections) {
-    const ap_timeline = collections.get("ap_timeline");
-    const ap_notifications = collections.get("ap_notifications");
+    const ap_timeline = typeof collections.get === "function" ? collections.get("ap_timeline") : collections.ap_timeline;
+    const ap_notifications = typeof collections.get === "function" ? collections.get("ap_notifications") : collections.ap_notifications;
 
     // Search timeline by both uid (canonical) and url (display)
     let authorUrl = null;