diff --git a/src/libs/anilist/anilist-do.ts b/src/libs/anilist/anilist-do.ts
index 000bff6..1da1dd3 100644
--- a/src/libs/anilist/anilist-do.ts
+++ b/src/libs/anilist/anilist-do.ts
@@ -359,7 +359,7 @@ export class AnilistDurableObject extends DurableObject {
     if (response.status === 429) {
       const retryAfter = await response
         .json()
-        .then(({ headers }) => headers["Retry-After"]);
+        .then(({ headers }) => new Headers(headers).get("Retry-After"));
       console.log("429, retrying in", retryAfter);
 
       await sleep(Number(retryAfter || 1) * 1000); // specific fallback or ensure logic