diff --git a/routes/api/_middleware.ts b/routes/api/_middleware.ts
index 18136ca..6bd7459 100644
--- a/routes/api/_middleware.ts
+++ b/routes/api/_middleware.ts
@@ -50,6 +50,7 @@ export async function handler(req: Request, ctx: MiddlewareHandlerContext) {
             headers.set("Access-Control-Allow-Origin", "*");
             if (allow) headers.set("Access-Control-Allow-Methods", allow);
             headers.set("Access-Control-Allow-Headers", "Content-Type, Range");
+            headers.set("Access-Control-Allow-Credentials", "true");
         }
         return new Response(null, { status: 204, headers });
     } else {
diff --git a/routes/file/_middleware.ts b/routes/file/_middleware.ts
index 1d0ac85..e9d6126 100644
--- a/routes/file/_middleware.ts
+++ b/routes/file/_middleware.ts
@@ -11,6 +11,7 @@ export async function handler(req: Request, ctx: MiddlewareHandlerContext) {
             headers.set("Access-Control-Allow-Origin", "*");
             if (allow) headers.set("Access-Control-Allow-Methods", allow);
             headers.set("Access-Control-Allow-Headers", "Content-Type, Range");
+            headers.set("Access-Control-Allow-Credentials", "true");
         }
         return new Response(null, { status: 204, headers });
     } else {