title: The authorization mechanism you have provided is not supported. Please use AWS4-HMAC-SHA256
body: <p>I get an error <code>AWS::S3::Errors::InvalidRequest The authorization mechanism you have provided is not supported. Please use AWS4-HMAC-SHA256.</code> when I try upload file to S3 bucket in new Frankfurt region. All works properly with <code>US Standard</code> region.</p>
  
  <p>Script:</p>
  
  <pre><code>backup_file = '/media/db-backup_for_dev/2014-10-23_02-00-07/slave_dump.sql.gz'
  s3 = AWS::S3.new(
      access_key_id:     AMAZONS3['access_key_id'],
      secret_access_key: AMAZONS3['secret_access_key']
  )
  
  s3_bucket = s3.buckets['test-frankfurt']
  
  # Folder and file name
  s3_name = "database-backups-last20days/#{File.basename(File.dirname(backup_file))}_#{File.basename(backup_file)}"
  
  file_obj = s3_bucket.objects[s3_name]
  file_obj.write(file: backup_file)
  </code></pre>
  
  <p>aws-sdk (1.56.0)</p>
  
  <p>How to fix it?</p>
  
  <p>Thank you.</p>