diff --git a/src/index.ts b/src/index.ts
index 2c5b89c..fe9f845 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -611,7 +611,10 @@ export default {
 	async fetch(request: Request, env: Env, ctx: ExecutionContext): Promise<Response> {
 		const { bucket } = env;
 
-		if (request.headers.get('Authorization') !== `Basic ${btoa(`${env.USERNAME}:${env.PASSWORD}`)}`) {
+		if (
+			request.method !== 'OPTIONS'
+			&& request.headers.get('Authorization') !== `Basic ${btoa(`${env.USERNAME}:${env.PASSWORD}`)}`
+		) {
 			return new Response('Unauthorized', {
 				status: 401,
 				headers: {