Curator to AWS ES via a squid proxy

Hi there, I am using curator (5.7.6 version) to manage my AWS ES (6.3 version) indices, My curator is running on machine which needs proxy for internet access, so i have configured squid proxy and able to connect internet. But when my curator tries to connect ES it gives error :
Error: ConnectionError((<urllib3.connection.VerifiedHTTPSConnection object at 0x7f83fa1be390>, 'Connection to search-demo-smp-scp3gqfdtlvaiwmn7f7ai2far4.eu-central-1.es.amazonaws.com timed out. (connect timeout=30)'))

i also tried putting url_prefix: my_squid_proxy:port in curator config, still same error. My curator works fine if i put it on non proxied machine. Does anyone have idea, what's the cause of this issue?

Curator does not currently support proxied connections. This can be manually worked around in the interim.

@theuntergeek Thanks for quick reply.