diff --git a/supabase/functions/buscar-bibliografia/index.ts b/supabase/functions/buscar-bibliografia/index.ts
index f45b5a5..46fda32 100644
--- a/supabase/functions/buscar-bibliografia/index.ts
+++ b/supabase/functions/buscar-bibliografia/index.ts
@@ -225,7 +225,12 @@ Deno.serve(async (req: Request): Promise<Response> => {
 
     const [googleResp, openLibraryResp] = await Promise.all([
       fetch(googleUrl, { headers: { Accept: "application/json" } }),
-      fetch(openLibraryUrl, { headers: { Accept: "application/json" } }),
+      fetch(openLibraryUrl, {
+        headers: {
+          Accept: "application/json",
+          "User-Agent": "Acad-IA info.ingenieria.lci@gmail.com",
+        },
+      }),
     ]);
 
     if (!googleResp.ok) {