Cloudfront似乎提供的内容比S3中的内容更旧

I have a Django app that's storing static files in s3 and using Cloudfront as the CDN to serve them. I recently updated a js file, and deployed it to the s3 bucket that serves content for the CDN. I verified that the content is correct in s3 and the upload times on it all make sense. Nevertheless, Cloudfront keeps serving an older version of the file (10 hours later). How do I deal with this?I have a Django app that's storing static files